IMS HEALTH INC
10-12B, 1998-04-22
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<PAGE>
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON APRIL 22, 1998
 
                                                           REGISTRATION NO.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                            ------------------------
 
                                    FORM 10
 
                  GENERAL FORM FOR REGISTRATION OF SECURITIES
               PURSUANT TO SECTION 12(B) OR (G) OF THE SECURITIES
                              EXCHANGE ACT OF 1934
 
                            IMS HEALTH INCORPORATED
             (Exact name of registrant as specified in its charter)
                            ------------------------
 
<TABLE>
<S>                                            <C>
                  DELAWARE                                      06-1506026
       (State or other jurisdiction of                       (I.R.S. Employer
       incorporation or organization)                     Identification Number)
 
               200 NYALA FARMS
            WESTPORT, CONNECTICUT                                  06880
  (Address of principal executive offices)                      (Zip Code)
</TABLE>
 
                            ------------------------
 
              REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE:
                                 (203) 222-4200
 
       SECURITIES TO BE REGISTERED PURSUANT TO SECTION 12(B) OF THE ACT:
 
<TABLE>
<CAPTION>
                                                                       NAME OF EACH EXCHANGE ON WHICH
        TITLE OF EACH CLASS TO BE SO REGISTERED                        EACH CLASS IS TO BE REGISTERED
- --------------------------------------------------------  --------------------------------------------------------
<S>                                                       <C>
        Common Stock, par value $0.01 per share                           New York Stock Exchange
</TABLE>
 
       SECURITIES TO BE REGISTERED PURSUANT TO SECTION 12(G) OF THE ACT:
                                      NONE
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
ITEM 1. BUSINESS.
 
    The information required by this item is contained under the sections "IMS
HEALTH Business", "IMS HEALTH (Accounting Successor to Cognizant) Management's
Discussion and Analysis of Financial Condition and Results of Operations", "Risk
Factors--Risks Relating to IMS HEALTH and Nielsen Media Research" and "--Risks
Relating to IMS HEALTH" and "Forward-Looking Statements" of, and in the
Cognizant Corporation Consolidated Financial Statements in, the Information
Statement dated April 22, 1998 included herewith as Exhibit 99.1 (the
"Information Statement") and such sections are incorporated herein by reference.
 
ITEM 2. FINANCIAL INFORMATION.
 
    The information required by this item is contained under the sections "IMS
HEALTH (Accounting Successor to Cognizant) Selected Financial Data", "IMS HEALTH
(Accounting Successor to Cognizant) Management's Discussion and Analysis of
Financial Condition and Results of Operations", "Risk Factors--Risks Relating to
IMS HEALTH and Nielsen Media Research" and "--Risks Relating to IMS HEALTH" and
"Forward-Looking Statements" of the Information Statement and such sections are
incorporated herein by reference.
 
ITEM 3. PROPERTIES.
 
    The information required by this item is contained under the section "IMS
HEALTH Business-- Properties" of the Information Statement and such section is
incorporated herein by reference.
 
ITEM 4. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT.
 
    The information required by this item is contained under the section "IMS
HEALTH Security Ownership by Certain Beneficial Owners and Management" of the
Information Statement and such section is incorporated herein by reference.
 
ITEM 5. DIRECTORS AND EXECUTIVE OFFICERS.
 
    The information required by this item is contained under the sections "IMS
HEALTH Management and Executive Compensation--IMS HEALTH Board of Directors" and
"--IMS HEALTH Executive Officers" of the Information Statement and such sections
are incorporated herein by reference.
 
ITEM 6. EXECUTIVE COMPENSATION.
 
    The information required by this item is contained under the section "IMS
HEALTH Management and Executive Compensation" of the Information Statement and
such section is incorporated herein by reference.
 
ITEM 7. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS.
 
    The information required by this item is contained under the section
"Relationship Between IMS HEALTH and Nielsen Media Research After the
Distribution" of the Information Statement and such section is incorporated
herein by reference.
 
ITEM 8. LEGAL PROCEEDINGS.
 
    The information required by this item is contained under the section "IMS
HEALTH Business-- Legal Proceedings", "Risk Factors--Risks Relating to IMS
HEALTH and Nielsen Media Research" and "--Risks Relating to IMS HEALTH" and
"Forward-Looking Statements" of the Information Statement and such section is
incorporated herein by reference.
 
ITEM 9. MARKET PRICE OF AND DIVIDENDS ON THE REGISTRANT'S COMMON EQUITY AND
       RELATED STOCKHOLDER MATTERS.
 
    The information required by this item is contained under the sections "The
Distribution--Listing and Trading of IMS HEALTH Common Stock and Nielsen Media
Research Common Stock", "Relationship
 
                                       2
<PAGE>
Between IMS HEALTH and Nielsen Media Research After the Distribution--Employee
Benefits Agreement", "Dividend Policies", "IMS HEALTH Management and Executive
Compensation" and "Description of IMS HEALTH Capital Stock" of the Information
Statement and such sections are incorporated herein by reference.
 
ITEM 10. RECENT SALES OF UNREGISTERED SECURITIES.
 
    On February 4, 1998, as part of its original incorporation, the Registrant
issued 100 shares of its common stock, for a total consideration of $10,000, to
Cognizant Corporation, which is and will be the Registrant's sole stockholder
until the Distribution Date as defined and described in the section "The
Distribution" of the Information Statement, and such section is incorporated
herein by reference. Subsequent to the Distribution, Cognizant Corporation
(which will change its name to Nielsen Media Research, Inc.) will hold no
capital stock of the Registrant.
 
ITEM 11. DESCRIPTION OF REGISTRANT'S SECURITIES TO BE REGISTERED.
 
    The information required by this item is contained under the section
"Description of IMS HEALTH Capital Stock" of the Information Statement and such
section is incorporated herein by reference, except for the information under
the caption "IMS HEALTH Rights Plan", which is not incorporated by reference
herein as the IMS HEALTH preferred share purchase rights and shares of Series A
Junior Participating Preferred Stock described under such caption will be
registered separately on a Registration Statement on Form 8-A.
 
ITEM 12. INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
    The information required by this item is contained under the section
"Description of IMS HEALTH Capital Stock--Indemnification and Limitation of
Liability for Directors and Officers" of the Information Statement and such
section is incorporated herein by reference.
 
ITEM 13. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.
 
    The information required by this item is (i) identified in the sections
"Index to Financial Statements-- Cognizant Corporation" and "--IMS Health
Incorporated" and contained in the sections "Financial Statements--Cognizant
Corporation" and "--IMS Health Incorporated" of the Information Statement and
(ii) included in the consolidated financial statements of Gartner Group, Inc.
and Notes thereto for the years ended September 30, 1997, 1996 and 1995, and the
related report thereon for the years ended September 30, 1997 and 1996 appearing
on pages 13 to 37 of the Gartner Group, Inc. 1997 Annual Report to Shareholders
filed as Exhibit 13.1 to the Gartner Group, Inc. Form 10-K for the fiscal year
ended September 30, 1997 and included herewith as Exhibit 99.4. Such sections
and such exhibit are incorporated herein by reference.
 
ITEM 14. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
       FINANCIAL MATTERS.
 
    None.
 
ITEM 15. FINANCIAL STATEMENTS AND EXHIBITS.
 
    (a) Financial Statements
 
    The information required by this item is contained in (i) the "Index to
Financial Statements" on page F-1 of the Information Statement and such
information is incorporated herein by reference, and (ii) Schedule II--
"Valuation and Qualifying Accounts" to this Registration Statement.
 
                                       3
<PAGE>
    (b) Exhibits
 
    The following documents are filed as exhibits hereto:
 
<TABLE>
<CAPTION>
  EXHIBIT
    NO.                                                     DESCRIPTION
- -----------  ---------------------------------------------------------------------------------------------------------
<C>          <S>
 
        3.1  Form of Restated Certificate of Incorporation of IMS Health Incorporated*
 
        3.2  Form of Amended and Restated By-laws of IMS Health Incorporated*
 
        4.1  Specimen Common Stock certificate+
 
       10.1  Form of Distribution Agreement between Cognizant Corporation and IMS Health Incorporated*
 
       10.2  Form of Tax Allocation Agreement between Cognizant Corporation and IMS Health Incorporated+
 
       10.3  Form of Employee Benefits Agreement between Cognizant Corporation and IMS Health Incorporated*
 
       10.4  Form of Intellectual Property Agreement between Cognizant Corporation and IMS Health Incorporated+
 
       10.5  Form of Shared Transaction Services Agreement between Cognizant Corporation and IMS Health Incorporated+
 
       10.6  Form of Data Services Agreement between Cognizant Corporation and IMS Health Incorporated+
 
       10.7  Form of Transition Services Agreement between Cognizant Corporation and IMS Health Incorporated+
 
       10.8  Form of Undertaking of IMS Health Incorporated+
 
       21    List of Subsidiaries of IMS Health Incorporated+
 
       27    Financial Data Schedule of IMS Health Incorporated+
 
       99.1  Information Statement dated April 22, 1998*
 
       99.2  Chairman's Letter to Stockholders of Cognizant Corporation*
 
       99.3  Form of Rights Agreement between IMS Health Incorporated and First Chicago Trust Company of New York, as
             Rights Agent+
 
       99.4  Pages 13 to 37 of the Gartner Group, Inc. 1997 Annual Report to Shareholders filed as Exhibit 13.1 to the
             Gartner Group, Inc. Form 10-K for the fiscal year ended September 30, 1997 (currently filed as Exhibit
             99.3 to the Form 10-K of Cognizant Corporation for the year ended December 31, 1997, filed February 17,
             1998, file no. 001-12275)+
 
       99.5  Report of Price Waterhouse LLP on consolidated financial statements of Gartner Group, Inc. for the year
             ended September 30, 1995+
</TABLE>
 
- ------------------------
 
*   Filed herewith.
 
+   To be filed by amendment.
 
                                       4
<PAGE>
                                   SIGNATURES
 
    Pursuant to the requirements of Section 12 of the Securities Exchange Act of
1934, the registrant has duly caused this registration statement to be signed on
its behalf by the undersigned, thereunto duly authorized.
 
<TABLE>
<S>                                          <C>        <C>
                                             IMS Health Incorporated
 
                                             By:        /s/ Kenneth S. Siegel
                                                        ------------------------------------------
                                                        Name: Kenneth S. Siegel
                                                        Title:  Senior Vice President,
                                                              General Counsel and Secretary
</TABLE>
 
Date: April 22, 1998
 
                                       5
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Shareholders and the Board of Directors of Cognizant Corporation:
 
    Our report on the consolidated financial statements of Cognizant Corporation
as of December 31, 1997 and 1996, and for each of the three years in the period
ended December 31, 1997, is included in this Form 10 on page F-2 of the
Information Statement. In connection with our audits of such financial
statements, we have also audited the related financial statement schedule set
forth on page 7 of this Form 10.
 
    In our opinion, the financial statement schedule referred to above, when
considered in relation to the basic financial statements taken as a whole,
presents fairly, in all material respects, the information required to be
included therein.
 
                                          /s/ Coopers & Lybrand L.L.P.
 
                                          COOPERS & LYBRAND L.L.P.
 
New York, New York
February 17, 1998
 
                                       6
<PAGE>
                     COGNIZANT CORPORATION AND SUBSIDIARIES
 
                 SCHEDULE II--VALUATION AND QUALIFYING ACCOUNTS
              FOR THE YEAR ENDED DECEMBER 31, 1997, 1996 AND 1995
                                 (IN THOUSANDS)
<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------------------
<S>                                                 <C>          <C>          <C>            <C>          <C>
                      COL. A                          COL. B       COL. C        COL. D        COL. E
 
<CAPTION>
- -------------------------------------------------------------------------------------------------------------------
                                                                  ADDITIONS
                                                    BALANCE AT   CHARGED TO                    BALANCE
                                                     BEGINNING    COSTS AND                    AT END
                   DESCRIPTION                       OF PERIOD    EXPENSES    DEDUCTIONS(A)   OF PERIOD
- --------------------------------------------------  -----------  -----------  -------------  -----------
<S>                                                 <C>          <C>          <C>            <C>          <C>
ALLOWANCE FOR DOUBTFUL ACCOUNTS:
 
    For the Year Ended December 31, 1997..........   $  15,470    $     790     $   9,061     $   7,199
                                                    -----------  -----------       ------    -----------
                                                    -----------  -----------       ------    -----------
 
    For the Year Ended December 31, 1996..........   $  11,446    $   4,993     $     969     $  15,470
                                                    -----------  -----------       ------    -----------
                                                    -----------  -----------       ------    -----------
 
    For the Year Ended December 31, 1995..........   $  10,839    $   3,310     $   2,703     $  11,446
                                                    -----------  -----------       ------    -----------
                                                    -----------  -----------       ------    -----------
</TABLE>
 
NOTE:
 
(a) Primarily represents the deconsolidation of Gartner Group and the recovery
    of accounts in 1997; and the charge-off of uncollectible accounts for which
    a reserve was provided in 1996 and 1995.
 
                                       7

<PAGE>


                                                                     Exhibit 3.1



                        RESTATED CERTIFICATE OF INCORPORATION

                                          OF

                               IMS HEALTH INCORPORATED

          The name of the corporation is IMS Health Incorporated, and the
original Certificate of Incorporation of the corporation was filed with the
Secretary of State of the State of Delaware on February 4, 1998.  The original
Certificate of Incorporation of the corporation is hereby amended and restated
to read in its entirety as follows:

          "FIRST:  The name of the corporation is IMS Health Incorporated.

          SECOND:  The registered office of the corporation in the State of
     Delaware is located at No. 1209 Orange Street, in the City of Wilmington,
     County of New Castle; and the name of its registered agent at such address
     is The Corporation Trust Company.

          THIRD:  The purposes of the corporation are to engage in any lawful
     act or activity for which corporations may be organized under the General
     Corporation Law of the State of Delaware.

          FOURTH: (1)  The total number of shares of all classes of stock which
     the corporation shall have authority to issue is 420,000,000, consisting of
     (1) 10,000,000 shares of Preferred Stock, par value $.01 per share
     ("Preferred Stock"), (2) 400,000,000 shares of Common Stock, par value $.01
     per share ("Common Stock"), and (3) 10,000,000 shares of Series Common
     Stock, par value $.01 per share ("Series Common Stock").  The number of
     authorized shares of any of the Preferred Stock, the Common Stock or the
     Series Common Stock may be increased or decreased (but not below the number
     of shares thereof then outstanding) by the affirmative vote of the holders
     of a majority in voting power of the stock of the corporation entitled to
     vote thereon irrespective of the provisions of Section 242(b)(2) of the
     General Corporation Law of the State of Delaware (or any successor
     provision thereto), and no vote of the holders of any of the Preferred
     Stock, the Common Stock or the Series Common Stock voting separately as a
     class shall be required therefor.

          (2)  The Board of Directors is hereby expressly authorized, by
     resolution or resolutions, to provide, out of the unissued shares of
     Preferred Stock, for series of Preferred Stock and, with respect to each
     such series, to fix the number of shares constituting such series and the
     designation of such series, the voting powers (if any) of the shares of
     such series, and the preferences and relative, participating, optional or
     other special rights, if any, and any qualifications, limitations or
     restrictions thereof, of the shares of such series.  The powers,
     preferences and relative, participating, optional and other special rights
     of each series of Preferred Stock, and the qualifications, limitations or
     restrictions thereof, if any, may differ from those of any and all other
     series at any time outstanding.

<PAGE>

                                                                               2

          (3)  The Board of Directors is hereby expressly authorized, by
     resolution or resolutions, to provide, out of the unissued shares of Series
     Common Stock, for series of Series Common Stock and, with respect to each
     such series, to fix the number of shares constituting such series and the
     designation of such series, the voting powers (if any) of the shares of
     such series, and the preferences and relative, participating, optional or
     other special rights, if any, and any qualifications, limitations or
     restrictions thereof, of the shares of such series.  The powers,
     preferences and relative, participating, optional and other special rights
     of each series of Series Common Stock, and the qualifications, limitations
     or restrictions thereof, if any, may differ from those of any and all other
     series at any time outstanding.

          (4)  (a)  Each holder of Common Stock, as such, shall be entitled to
     one vote for each share of Common Stock held of record by such holder on
     all matters on which stockholders generally are entitled to vote; provided,
     however, that, except as otherwise required by law, holders of Common
     Stock, as such, shall not be entitled to vote on any amendment to this
     Restated Certificate of Incorporation (including any certificate of
     designations relating to any series of Preferred Stock or Series Common
     Stock) that relates solely to the terms of one or more outstanding series
     of Preferred Stock or Series Common Stock if the holders of such affected
     series are entitled, either separately or together with the holders of one
     or more other such series, to vote thereon pursuant to this Restated
     Certificate of Incorporation (including any certificate of designations
     relating to any series of Preferred Stock or Series Common Stock) or
     pursuant to the General Corporation Law of the State of Delaware.

          (b)  Except as otherwise required by law, holders of a series of
     Preferred Stock or Series Common Stock, as such, shall be entitled only to
     such voting rights, if any, as shall expressly be granted thereto by this
     Restated Certificate of Incorporation (including any certificate of
     designations relating to such series).

          (c)  Subject to applicable law and the rights, if any, of the holders
     of any outstanding series of Preferred Stock or Series Common Stock or any
     class or series of stock having a preference over or the right to
     participate with the Common Stock with respect to the payment of dividends,
     dividends may be declared and paid on the Common Stock at such times and in
     such amounts as the Board of Directors in its discretion shall determine.

          (d)  Upon the dissolution, liquidation or winding up of the
     corporation, subject to the rights, if any, of the holders of any
     outstanding series of Preferred Stock or Series Common Stock or any class
     or series of stock having a preference over or the right to participate
     with the Common Stock with respect to the distribution of assets of the
     corporation upon such dissolution, liquidation or winding up of the
     corporation, the holders of the Common Stock, as such, shall be entitled to
     receive the assets of the corporation available for distribution to its
     stockholders ratably in proportion to the number of shares held by them.

<PAGE>

                                                                              3

          FIFTH:  The Board of Directors shall be authorized to make, amend,
     alter, change, add to or repeal the By-Laws of the corporation in any
     manner not inconsistent with the laws of the State of Delaware, subject to
     the power of the stockholders to amend, alter, change, add to or repeal the
     By-Laws made by the Board of Directors.  Notwithstanding anything contained
     in this Restated Certificate of Incorporation to the contrary, the
     affirmative vote of the holders of at least 80 percent in voting power of
     all the shares of the corporation entitled to vote generally in the
     election of directors, voting together as a single class, shall be required
     in order for the stockholders to alter, amend or repeal any provision of
     the By-laws which is to the same effect as Article Fifth, Article Seventh,
     and Article Eighth of this Restated Certificate of Incorporation or to
     adopt any provision inconsistent therewith.

          SIXTH:  (1) To the fullest extent permitted by the laws of the State
     of Delaware:

          (a) The corporation shall indemnify any person (and such person's
     heirs, executors or administrators) who was or is a party or is threatened
     to be made a party to any threatened, pending or completed action, suit or
     proceeding (brought in the right of the corporation or otherwise), whether
     civil, criminal, administrative or investigative, and whether formal or
     informal, including appeals, by reason of the fact that such person is or
     was a director or officer of the corporation or, if a director or officer
     of the corporation, by reason of the fact that such person is or was
     serving at the request of the corporation as a director, officer, partner,
     trustee, employee or agent of another corporation, partnership, joint
     venture, trust or other enterprise, for and against all expenses (including
     attorneys' fees), judgments, fines and amounts paid in settlement actually
     and reasonably incurred by such person or such heirs, executors or
     administrators in connection with such action, suit or proceeding,
     including appeals.  Notwithstanding the preceding sentence, the corporation
     shall be required to indemnify a person described in such sentence in
     connection with any action, suit or proceeding (or part thereof) commenced
     by such person only if the commencement of such action, suit or proceeding
     (or part thereof) by such person was authorized by the Board of Directors
     of the corporation.  The corporation may indemnify any person (and such
     person's heirs, executors or administrators) who was or is a party or is
     threatened to be made a party to any threatened, pending or completed
     action, suit or proceeding (brought in the right of the corporation or
     otherwise), whether civil, criminal, administrative or investigative, and
     whether formal or informal, including appeals, by reason of the fact that
     such person is or was an employee or agent of the corporation or is or was
     serving at the request of the corporation as a director, officer, partner,
     trustee, employee or agent of another corporation, for and against all
     expenses (including attorneys' fees), judgments, fines and amounts paid in
     settlement actually and reasonably incurred by such person or such heirs,
     executors or administrators in connection with such action, suit or
     proceeding, including appeals.

          (b) The corporation shall promptly pay expenses incurred by (i) any
     person whom the corporation is obligated to indemnify pursuant to the first
     sentence of subsection (a) of this Article Sixth, Section 

<PAGE>

                                                                              4

     1 or (ii) any person whom the corporation has determined to indemnify
     pursuant to the third sentence of subsection (a) of this Article Sixth,
     Section 1, in defending any action, suit or proceeding in advance of the
     final disposition of such action, suit or proceeding, including appeals,
     upon presentation of appropriate documentation.

          (c) The corporation may purchase and maintain insurance on behalf of
     any person described in subsection (a) of this Article Sixth, Section (1)
     against any liability asserted against such person, whether or not the
     corporation would have the power to indemnify such person against such
     liability under the provisions of this Article Sixth, Section (1) or
     otherwise.

          (d) The provisions of this Article Sixth, Section (1) shall be
     applicable to all actions, claims, suits or proceedings made or commenced
     after the adoption hereof, whether arising from acts or omissions to act
     occurring before or after its adoption.  The provisions of this Article
     Sixth, Section (1) shall be deemed to be a contract between the corporation
     and each director or officer who serves in such capacity at any time while
     this Article Sixth, Section (1) and the relevant provisions of the laws of
     the State of Delaware and other applicable law, if any, are in effect, and
     any repeal or modification hereof shall not affect any rights or
     obligations then existing with respect to any state of facts or any action,
     suit or proceeding then or theretofore existing, or any action, suit or
     proceeding thereafter brought or threatened based in whole or in part on
     any such state of facts.  If any provision of this Article Sixth, Section
     (1) shall be found to be invalid or limited in application by reason of any
     law or regulation, it shall not affect the validity of the remaining
     provisions hereof.  The rights of indemnification provided in this Article
     Sixth, Section (1) shall neither be exclusive of, nor be deemed in
     limitation of, any rights to which an officer, director, employee or agent
     may otherwise be entitled or permitted by contract, this Restated
     Certificate of Incorporation, vote of stockholders or directors or
     otherwise, or as a matter of law, both as to actions in such person's
     official capacity and actions in any other capacity while holding such
     office, it being the policy of the corporation that indemnification of any
     person whom the corporation is obligated to indemnify pursuant to the first
     sentence of subsection (a) of this Article Sixth, Section 1 shall be made
     to the fullest extent permitted by law.

          (e) For purposes of this Article Sixth, references to "other
     enterprises" shall include employee benefit plans; references to "fines"
     shall include any excise taxes assessed on a person with respect to an
     employee benefit plan; and references to "serving at the request of the
     corporation" shall include any service as a director, officer, employee or
     agent of the corporation which imposes duties on, or involves services by,
     such director, officer, employee, or agent with respect to an employee
     benefit plan, its participants, or beneficiaries.

          (2) A director of the corporation shall not be liable to the
     corporation or its stockholders for monetary damages for breach of
     fiduciary duty as a director, except to the extent such exemption from
     liability or limitation thereof is not permitted under the General
     Corporation Law of the State of Delaware as the same exists or may
     hereafter be amended.  Any amendment, modification or repeal of the
     foregoing sentence shall not adversely affect any right or protection of a
     director of the corporation hereunder in 

<PAGE>

                                                                              5

     respect of any act or omission occurring prior to the time of such
     amendment, modification or repeal.

          SEVENTH:  (1) The business and affairs of the corporation shall be
     managed by or under the direction of a Board of Directors consisting of not
     less than three directors, the exact number of directors to be determined
     from time to time by resolution adopted by affirmative vote of a majority
     of the Board of Directors.  The directors shall be divided into three
     classes designated Class I, Class II and Class III.  Each class shall
     consist, as nearly as possible, of one-third of the total number of
     directors constituting the entire Board of Directors.  Class I directors
     shall be originally elected for a term expiring at the succeeding annual
     meeting of stockholders, Class II directors shall be originally elected for
     a term expiring at the second succeeding annual meeting of stockholders,
     and Class III directors shall be originally elected for a term expiring at
     the third succeeding annual meeting of stockholders.  At each succeeding
     annual meeting of stockholders following 1998, successors to the class of
     directors whose term expires at that annual meeting shall be elected for a
     term expiring at the third succeeding annual meeting.  If the number of
     directors is changed, any increase or decrease shall be apportioned among
     the classes so as to maintain the number of directors in each class as
     nearly equal as possible, and any additional director of any class elected
     to fill a newly created directorship resulting from an increase in such
     class shall hold office for a term that shall coincide with the remaining
     term of that class, but in no case shall a decrease in the number of
     directors remove or shorten the term of any incumbent director.  A director
     shall hold office until the annual meeting for the year in which his term
     expires and until his successor shall be elected and shall qualify,
     subject, however, to prior death, resignation, retirement, disqualification
     or removal from office.  Any newly created directorship on the Board of
     Directors that results from an increase in the number of directors and any
     vacancy occurring in the Board of Directors may be filled only by a
     majority of the directors then in office, although less than a quorum, or
     by a sole remaining director.  If any applicable provision of the General
     Corporation Law of the State of Delaware expressly confers power on
     stockholders to fill such a directorship at a special meeting of
     stockholders, such a directorship may be filled at such meeting only by the
     affirmative vote of at least 80 percent of the voting power of all shares
     of the corporation entitled to vote generally in the election of directors
     voting as a single class.  Any director elected to fill a vacancy not
     resulting from an increase in the number of directors shall have the same
     remaining term as that of his predecessor.  Directors may be removed only
     for cause, and only by the affirmative vote of at least 80 percent in
     voting power of all shares of the corporation entitled to vote generally in
     the election of directors, voting as a single class.

          (2) Notwithstanding the foregoing, whenever the holders of any one or
     more series of Preferred Stock or Series Common Stock issued by the
     corporation shall have the right, voting separately as a series or
     separately as a class with one or more such other series, to elect
     directors at an annual or special meeting of stockholders, the election,
     term of office, removal, filling of vacancies and other features of such
     directorships shall be governed by the terms of this Restated Certificate
     of Incorporation (including any certificate of designations relating to any
     series of Preferred Stock or Series Common 

<PAGE>

                                                                              6

     Stock) applicable thereto, and such directors so elected shall not be
     divided into classes pursuant to this Article Seventh unless expressly
     provided by such terms.

          EIGHTH:  Any action required or permitted to be taken by the holders
     of the Common Stock of the corporation must be effected at a duly called
     annual or special meeting of such holders and may not be effected by any
     consent in writing by such holders.  Except as otherwise required by law
     and subject to the rights of the holders of any series of Preferred Stock
     or Series Common Stock, special meetings of stockholders of the corporation
     may be called only by the Chief Executive Officer of the corporation or by
     the Board of Directors pursuant to a resolution approved by the Board of
     Directors.

          NINTH:  Notwithstanding anything contained in this Restated
     Certificate of Incorporation to the contrary, the affirmative vote of the
     holders of at least 80 percent in voting power of all the shares of the
     corporation entitled to vote generally in the election of directors, voting
     together as a single class, shall be required to alter, amend or repeal
     Article Fifth, Article Seventh, Article Eighth or this Article Ninth or to
     adopt any provision inconsistent therewith."

          IMS Health Incorporated does hereby further certify that this Restated
Certificate of Incorporation was duly adopted by unanimous written consent of
the stockholders in accordance with the provisions of Sections 228, 242 and 245
of the General Corporation Law of the State of Delaware.

<PAGE>

                                                                              7

          IN WITNESS WHEREOF, IMS HEALTH INCORPORATED has caused its corporate
seal to be hereunto affixed and this certificate to be signed by               
         ,  its                      , this        day of                , 1998.


                                   IMS HEALTH INCORPORATED

     

                                   By:                            
                                       ------------------------------
                                         Name:
                                         Title:



<PAGE>

                                                                     EXHIBIT 3.2


                                 AMENDED AND RESTATED


                                       BY-LAWS

                                          OF

                               IMS HEALTH INCORPORATED

                                     ____________

                                      ARTICLE I.

                                     STOCKHOLDERS

          Section 1.  The annual meeting of the stockholders of the corporation
for the purpose of electing directors and for the transaction of such other
business as may properly be brought before the meeting shall be held on such
date, and at such time and place within or without the State of Delaware as may
be designated from time to time by the Board of Directors.

          Section 2.  Special meetings of the stockholders shall be called at
any time by the Secretary or any other officer, whenever directed by the Board
of Directors or by the Chief Executive Officer.  The purpose or purposes of the
proposed meeting shall be included in the notice setting forth such call.

          Section 3.  Except as otherwise provided by law, notice of the time,
place and, in the case of a special meeting, the purpose or purposes of the
meeting of stockholders shall be delivered personally or mailed not earlier than
sixty, nor less than ten days previous thereto, to each stockholder of record
entitled to vote at the meeting at such address as appears on the records of the
corporation.

          Section 4.  The holders of a majority in voting power of the stock
issued and outstanding and entitled to vote thereat, present in person or
represented by proxy, shall constitute a quorum at all meetings of the
stockholders for the transaction of business, except as otherwise provided by
statute or by the Restated Certificate of Incorporation; but if at any regularly
called meeting of stockholders there be less than a quorum present, the
stockholders present may adjourn the meeting from time to time without further
notice other than announcement at the meeting until a quorum shall be present or
represented.  At such adjourned meeting at which a quorum shall be present or
represented any business may be transacted which might have been transacted at
the original meeting.  If the adjournment is for more than 30 days, or if, after
the adjournment, a new record date is fixed for the adjourned meeting, a notice
of the adjourned meeting shall be given to each stockholder of record entitled
to vote at the meeting.

          Section 5.  The Chairman of the Board, or in the Chairman's absence or
at the Chairman's direction, the President, or in the President's absence or at
the President's direction, any officer of the Corporation shall call all
meetings of the stockholders to order and shall act 

<PAGE>

                                                                               2

as Chairman of such meeting.  The Secretary of the corporation or, in such
officer's absence, an Assistant Secretary shall act as secretary of the meeting.
If neither the Secretary nor an Assistant Secretary is present, the Chairman of
the meeting shall appoint a secretary of the meeting.  Unless otherwise
determined by the Board of Directors prior to the meeting, the Chairman of the
meeting shall determine the order of business and shall have the authority in
his or her discretion to regulate the conduct of any such meeting, including,
without limitation, by imposing restrictions on the persons (other than
stockholders of the corporation or their duly appointed proxies) who may attend
any such meeting, whether any stockholder or stockholders' proxy may be excluded
from any meeting of stockholders based upon any determination by the Chairman,
in his or her sole discretion, that any such person has unduly disrupted or is
likely to disrupt the proceedings thereat, and the circumstances in which any
person may make a statement or ask questions at any meeting of stockholders.

          Section 6.  At all meetings of stockholders, any stockholder entitled
to vote thereat shall be entitled to vote in person or by proxy, but no proxy
shall be voted after three years from its date, unless such proxy provides for a
longer period.  Without limiting the manner in which a stockholder may authorize
another person or persons to act for the stockholder as proxy pursuant to the
General Corporation Law of the State of Delaware, the following shall constitute
a valid means by which a stockholder may grant such authority: (1) a stockholder
may execute a writing authorizing another person or persons to act for the
stockholder as proxy, and execution of the writing may be accomplished by the
stockholder or the stockholder's authorized officer, director, employee or agent
signing such writing or causing his or her signature to be affixed to such
writing by any reasonable means including, but not limited to, by facsimile
signature; or (2) a stockholder may authorize another person or persons to act
for the stockholder as proxy by transmitting or authorizing the transmission of
a telegram, cablegram, or other means of electronic transmission to the person
who will be the holder of the proxy or to a proxy solicitation firm, proxy
support service organization or like agent duly authorized by the person who
will be the holder of the proxy to receive such transmission, provided that any
such telegram, cablegram or other means of electronic transmission must either
set forth or be submitted with information from which it can be determined that
the telegram, cablegram or other electronic transmission was authorized by the
stockholder.  If it is determined that such telegrams, cablegrams or other
electronic transmissions are valid, the judge or judges of stockholder votes or,
if there are no such judges, such other persons making that determination shall
specify the information upon which they relied.

          Any copy, facsimile telecommunication or other reliable reproduction
of the writing or transmission created pursuant to the preceding paragraph of
this Section 6 may be substituted or used in lieu of the original writing or
transmission for any and all purposes for which the original writing or
transmission could be used, provided that such copy, facsimile telecommunication
or other reproduction shall be a complete reproduction of the entire original
writing or transmission.

          Proxies shall be filed with the Secretary of the meeting prior to or
at the commencement of the meeting to which they relate.

<PAGE>

                                                                              3

          Section 7.  When a quorum is present at any meeting, the vote of the
holders of a majority in voting power of the stock present in person or
represented by proxy and entitled to vote on the matter shall decide any
question brought before such meeting, unless the question is one upon which by
express provision of statute or of the Restated Certificate of Incorporation or
these By-Laws, a different vote is required, in which case such express
provision shall govern and control the decision of such question.

          Section 8.  In order that the corporation may determine the
stockholders (a) entitled to notice of or to vote at any meeting of stockholders
or any adjournment thereof, or (b) entitled to consent to corporate action in
writing without a meeting, or (c) entitled to receive payment of any dividend or
other distribution or allotment of any rights, or entitled to exercise any
rights in respect of any change, conversion or exchange of stock or for the
purpose of any other lawful action, the Board of Directors may fix a record
date, which record date shall not precede the date upon which the resolution
fixing the record date is adopted, and which record date (i) in the case of
clause (a) above, shall not be more than sixty nor less than ten days before the
date of such meeting, (ii) in the case of clause (b) above, shall not be more
than ten days after the date upon which the resolution fixing the record date is
adopted by the board of directors, and (iii) in the case of clause (c) above,
shall not be more than sixty days prior to such action.  If for any reason the
Board of Directors shall not have fixed a record date for any such purpose, the
record date for such purpose shall be determined as provided by law.  Only those
stockholders of record on the date so fixed or determined shall be entitled to
any of the foregoing rights, notwithstanding the transfer of any such stock on
the books of the corporation after any such record date so fixed or determined.

          Section 9.  The officer who has charge of the stock ledger of the
corporation shall prepare and make at least ten days before every meeting of
stockholders, a complete list of the stockholders entitled to vote at the
meeting, arranged in alphabetical order, and showing the address of each
stockholder and the number of shares registered in the name of each stockholder.
Such list shall be open to the examination of any stockholder, for any purpose
germane to the meeting, during ordinary business hours, for a period of at least
ten days prior to the meeting, either at a place within the city where the
meeting is to be held, which place shall be specified in the notice of meeting,
or, if not so specified, at the place where the meeting is to be held.  The list
shall also be produced at the time and kept at the place of the meeting during
the whole time thereof, and may be inspected by any stockholder who is present.

          Section 10.  The Board of Directors, in advance of all meetings of the
stockholders, shall appoint one or more judges of stockholder votes, who may be
stockholders or their proxies, but not directors of the corporation or
candidates for office.  In the event that the Board of Directors fails to so
appoint judges of stockholder votes or, in the event that one or more judges of
stockholder votes previously designated by the Board of Directors fails to
appear or act at the meeting of stockholders, the Chairman of the meeting may
appoint one or more judges of stockholder votes to fill such vacancy or
vacancies.  Judges of stockholder votes appointed to act at any meeting of the
stockholders, before entering upon the discharge of their duties, shall be sworn
faithfully to execute the duties of judge of stockholder votes with strict
impartiality and according to the best of their ability and the oath so taken
shall be subscribed by them.  Judges of stockholder votes shall, subject to the
power of the Chairman of the meeting 

<PAGE>

                                                                              4

to open and close the polls, take charge of the polls, and, after the voting,
shall make a certificate of the result of the vote taken.

          Section 11. (A)  ANNUAL MEETINGS OF STOCKHOLDERS. (1) Nominations of
persons for election to the Board of Directors of the corporation and the
proposal of business to be considered by the stockholders may be made at an
annual meeting of stockholders (a) pursuant to the corporation's notice of
meeting delivered pursuant to Article 1, Section 3 of these By-Laws, (b) by or
at the direction of the Chairman of the Board or (c) by any stockholder of the
corporation who is entitled to vote at the meeting, who complied with the notice
procedures set forth in subparagraphs (2) and (3) of this paragraph (A) of this
By-Law and who was a stockholder of record at the time such notice is delivered
to the Secretary of the corporation.

          (2) For nominations or other business to be properly brought before an
annual meeting by a stockholder pursuant to clause (c) of paragraph (A)(1) of
this By-Law, the stockholder must have given timely notice thereof in writing to
the Secretary of the corporation, and, in the case of business other than
nominations, such other business must be a proper matter for stockholder action.
To be timely, a stockholder's notice shall be delivered to the Secretary at the
principal executive offices of the corporation not less than seventy days nor
more than ninety days prior to the first anniversary of the preceding year's
annual meeting; PROVIDED, HOWEVER, that in the event that the date of the annual
meeting is advanced by more than twenty days, or delayed by more than seventy
days, from such anniversary date, notice by the stockholder to be timely must be
so delivered not earlier than the ninetieth day prior to such annual meeting and
not later than the close of business on the later of the seventieth day prior to
such annual meeting or the tenth day following the day on which public
announcement of the date of such meeting is first made.  Such stockholder's
notice shall set forth (a) as to each person whom the stockholder proposes to
nominate for election or re-election as a director all information relating to
such person that is required to be disclosed in solicitations of proxies for
election of directors, or is otherwise required, in each case pursuant to
Regulation 14A under the Securities Exchange Act of 1934, as amended (the
"Exchange Act"), including such person's written consent to being named in the
proxy statement as a nominee and to serving as a director if elected; (b) as to
any other business that the stockholder proposes to bring before the meeting, a
brief description of the business desired to be brought before the meeting, the
reasons for conducting such business at the meeting and any material interest in
such business of such stockholder and the beneficial owner, if any, on whose
behalf the proposal is made; and (c) as to the stockholder giving the notice and
the beneficial owner, if any, on whose behalf the nomination or proposal is made
(i) the name and address of such stockholder, as they appear on the
corporation's books, and of such beneficial owner and (ii) the class and number
of shares of the corporation which are owned beneficially and of record by such
stockholder and such beneficial owner.

          (3) Notwithstanding anything in the second sentence of paragraph
(A)(2) of this By-Law to the contrary, in the event that the number of directors
to be elected to the Board of Directors of the corporation is increased and
there is no public announcement naming all of the nominees for director or
specifying the size of the increased Board of Directors made by the corporation
at least eighty days prior to the first anniversary of the preceding year's
annual meeting, a stockholder's notice required by this By-Law shall also be
considered timely, but only 

<PAGE>

                                                                              5

with respect to nominees for any new positions created by such increase, if it
shall be delivered to the Secretary at the principal executive offices of the
corporation not later than the close of business on the tenth day following the
day on which such public announcement is first made by the corporation.

          (B) SPECIAL MEETINGS OF STOCKHOLDERS.  Only such business shall be
conducted at a special meeting of stockholders as shall have been brought before
the meeting pursuant to the corporation's notice of meeting pursuant to Article
I, Section 2 of these By-Laws.  Nominations of persons for election to the Board
of Directors may be made at a special meeting of stockholders at which directors
are to be elected pursuant to the corporation's notice of meeting (a) by or at
the direction of the Board of Directors or (b) by any stockholder of the
corporation who is entitled to vote at the meeting, who complies with the notice
procedures set forth in this By-Law and who is a stockholder of record at the
time such notice is delivered to the Secretary of the corporation.  Nominations
of stockholders of persons for election to the Board of Directors may be made at
such a special meeting of stockholders if the stockholder's notice as required
by paragraph (A)(2) of this By-Law shall be delivered to the Secretary at the
principal executive offices of the corporation not earlier than the ninetieth
day prior to such special meeting and not later than the close of business on
the later of the seventieth day prior to such special meeting or the tenth day
following the day on which public announcement is first made of the date of the
special meeting and of the nominees proposed by the Board of Directors to be
elected at such meeting.

          (C) GENERAL. (1)  Only persons who are nominated in accordance with
the procedures set forth in this By-Law shall be eligible to serve as directors
and only such business shall be conducted at a meeting of stockholders as shall
have been brought before the meeting in accordance with the procedures set forth
in this By-Law.  Except as otherwise provided by law, the Restated Certificate
of Incorporation or these By-Laws, the Chairman of the meeting shall have the
power and duty to determine whether a nomination or any business proposed to be
brought before the meeting was made in accordance with the procedures set forth
in this By-Law and, if any proposed nomination or business is not in compliance
with this By-Law, to declare that such defective nomination shall be disregarded
or that such proposed business shall not be transacted.

          (2) For purposes of this By-Law, "public announcement" shall mean
disclosure in a press release reported by the Dow Jones News Service, Associated
Press or comparable national news service or in a document publicly filed by the
corporation with the Securities and Exchange Commission pursuant to Section 13,
14 or 15(d) of the Exchange Act.

          (3) For purposes of this By-Law, no adjournment nor notice of
adjournment of any meeting shall be deemed to constitute a new notice of such
meeting for purposes of this Section 11, and in order for any notification
required to be delivered by a stockholder pursuant to this Section 11 to be
timely, such notification must be delivered within the periods set forth above
with respect to the originally scheduled meeting.

          (4) Notwithstanding the foregoing provisions of this By-Law, a
stockholder shall also comply with all applicable requirements of the Exchange
Act and the rules and regulations 

<PAGE>

                                                                              6

thereunder with respect to the matters set forth in this By-Law.  Nothing in
this By-Law shall be deemed to affect any rights of stockholders to request
inclusion of proposals in the corporation's proxy statement pursuant to Rule
14a-8 under the Exchange Act.


                                     ARTICLE II.

                                  BOARD OF DIRECTORS

          Section 1.  The Board of Directors of the corporation shall consist of
such number of directors, not less than three nor more than 15, as shall from
time to time be fixed exclusively by resolution of the Board of Directors.  The
directors shall be divided into three classes in the manner set forth in the
Restated Certificate of Incorporation of the corporation, each class to be
elected for the term set forth therein.  Directors shall (except as hereinafter
provided for the filling of vacancies and newly created directorships) be
elected by the holders of a plurality of the voting power present in person or
represented by proxy and entitled to vote.  A majority of the total number of
directors then in office (but not less than one-third of the number of directors
constituting the entire Board of Directors) shall constitute a quorum for the
transaction of business and, except as otherwise provided by law or by the
corporation's Restated Certificate of Incorporation, the act of a majority of
the directors present at any meeting at which there is a quorum shall be the act
of the Board of Directors.  Directors need not be stockholders.

          Section 2.  Newly created directorships in the Board of Directors that
result from an increase in the number of directors and any vacancy occurring in
the Board of Directors may be filled only by a majority of the directors then in
office, although less than a quorum, or by a sole remaining director; and the
directors so chosen shall hold office for a term as set forth in the Restated
Certificate of Incorporation of the corporation.  If any applicable provision of
the General Corporation Law of the State of Delaware expressly confers power on
stockholders to fill such a directorship at a special meeting of stockholders,
such a directorship may be filled at such meeting only by the affirmative vote
of at least 80 percent in voting power of all shares of the corporation entitled
to vote generally in the election of directors, voting as a single class.

          Section 3.  Meetings of the Board of Directors shall be held at such
place within or without the State of Delaware as may from time to time be fixed
by resolution of the Board or as may be specified in the notice of any meeting. 
Regular meetings of the Board of Directors shall be held at such times as may
from time to time be fixed by resolution of the Board and special meetings may
be held at any time upon the call of the Chairman of the Board or the President,
by oral, or written notice including, telegraph, telex or transmission of a
telecopy, e-mail or other means of transmission, duly served on or sent or
mailed to each director to such director's address or telecopy number as shown
on the books of the corporation not less than one day before the meeting.  The
notice of any meeting need not specify the purposes thereof.  A meeting of the
Board may be held without notice immediately after the annual meeting of
stockholders at the same place at which such meeting is held.  Notice need not
be given of regular meetings of the Board held at times fixed by resolution of
the Board.  Notice of any meeting need not be given to any director who shall
attend such meeting in person (except when the director attends a meeting for
the express purpose of objecting at the beginning of the 

<PAGE>

                                                                              7

meeting, to the transaction of any business because the meeting is not lawfully
called or convened), or who shall waive notice thereof, before or after such
meeting, in writing.

          Section 4.  Notwithstanding the foregoing, whenever the holders of any
one or more series of Preferred Stock or Series Common Stock issued by the
corporation shall have the right, voting separately by series, to elect
directors at an annual or special meeting of stockholders, the election, term of
office, removal, filling of vacancies and other features of such directorships
shall be governed by the terms of the Restated Certificate of Incorporation
applicable thereto, and such directors so elected shall not be divided into
classes pursuant to Article SEVENTH of the Restated Certificate of Incorporation
unless expressly provided by such terms.  The number of directors that may be
elected by the holders of any such series of Preferred Stock or Series Common
Stock shall be in addition to the number fixed by or pursuant to the By-Laws. 
Except as otherwise expressly provided in the terms of such series, the number
of directors that may be so elected by the holders of any such series of stock
shall be elected for terms expiring at the next annual meeting of stockholders
and without regard to the classification of the members of the Board of
Directors as set forth in Section 1 hereof, and vacancies among directors so
elected by the separate vote of the holders of any such series of Preferred
Stock or Series Common Stock shall be filled by the affirmative vote of a
majority of the remaining directors elected by such series, or, if there are no
such remaining directors, by the holders of such series in the same manner in
which such series initially elected a director.

          Section 5.  If at any meeting for the election of directors, the
corporation has outstanding more than one class of stock, and one or more such
classes or series thereof are entitled to vote separately as a class, and there
shall be a quorum of only one such class or series of stock, that class or
series of stock shall be entitled to elect its quota of directors
notwithstanding absence of a quorum of the other class or series of stock.

          Section 6.  The Board of Directors may designate three or more
directors to constitute an executive committee, one of whom shall be designated
Chairman of such committee.  The members of such committee shall hold such
office until the next election of the Board of Directors and until their
successors are elected and qualify.  Any vacancy occurring in the committee
shall be filled by the Board of Directors.  Regular meetings of the committee
shall be held at such times and on such notice and at such places as it may from
time to time determine.  The committee shall act, advise with and aid the
officers of the corporation in all matters concerning its interest and the
management of its business, and shall generally perform such duties and exercise
such powers as may from time to time be delegated to it by the Board of
Directors, and shall have authority to exercise all the powers of the Board of
Directors, so far as may be permitted by law, in the management of the business
and the affairs of the corporation whenever the Board of Directors is not in
session or whenever a quorum of the Board of Directors fails to attend any
regular or special meeting of such Board.  Without limiting the generality of
the foregoing grant of authority, the executive committee is expressly
authorized to declare dividends, whether regular or special, to authorize the
issuance of stock of the corporation and to adopt a certificate of ownership and
merger pursuant to Section 253 or any successor provision of the Delaware
General Corporation Law.  The committee shall have power to authorize the seal
of the corporation to be affixed to all papers which are required by the
Delaware General Corporation Law to have the seal affixed thereto.  The fact
that the executive 

<PAGE>

                                                                              8

committee has acted shall be conclusive evidence that the Board of Directors was
not in session at such time or that a quorum of the Board had failed to attend
the regular or special meeting thereof.

          The executive committee shall keep regular minutes of its transactions
and shall cause them to be recorded in a book kept in the office of the
corporation designated for that purpose, and shall report the same to the Board
of Directors at their regular meeting.  The committee shall make and adopt its
own rules for the government thereof and shall elect its own officers.

          Section 7.  The Board of Directors may from time to time establish
such other committees to serve at the pleasure of the Board which shall be
comprised of such members of the Board and have such duties as the Board shall
from time to time establish.  Any director may belong to any number of
committees of the Board.  The Board may also establish such other committees
with such members (whether or not directors) and such duties as the Board may
from time to time determine.

          Section 8.  Unless otherwise restricted by the Restated Certificate of
Incorporation or these By-Laws, any action required or permitted to be taken at
any meeting of the Board of Directors or of any committee thereof may be taken
without a meeting if all members of the Board or committee, as the case may be,
consent thereto in writing, and the writing or writings are filed with the
minutes of proceedings of the Board of Directors.

          Section 9.  The members of the Board of Directors or any committee
thereof may participate in a meeting of such Board or committee, as the case may
be, by means of conference telephone or similar communications equipment by
means of which all persons participating in the meeting can hear each other, and
participation in a meeting pursuant to this subsection shall constitute presence
in person at such a meeting.

          Section 10.  The Board of Directors may establish policies for the
compensation of directors and for the reimbursement of the expenses of
directors, in each case, in connection with services provided by directors to
the corporation.


                                     ARTICLE III.

                                       OFFICERS

          Section 1.  The Board of Directors, as soon as may be after each
annual meeting of the stockholders, shall elect officers of the corporation,
including a Chairman of the Board or President and a Secretary.  The Board of
Directors may also from time to time elect such other officers (including one or
more Vice Presidents, a Treasurer, one or more Assistant Vice Presidents, one or
more Assistant Secretaries and one or more Assistant Treasurers) as it may deem
proper or may delegate to any elected officer of the corporation the power to
appoint and remove any such other officers and to prescribe their respective
terms of office, authorities and duties.  Any Vice President may be designated
Executive, Senior or Corporate, or may be given 

<PAGE>

                                                                              9

such other designation or combination of designations as the Board of Directors
may determine.  Any two or more offices may be held by the same person.

          Section 2.  All officers of the corporation elected by the Board of
Directors shall hold office for such term as may be determined by the Board of
Directors or until their respective successors are chosen and qualified.  Any
officer may be removed from office at any time either with or without cause by
the affirmative vote of a majority of the members of the Board then in office,
or, in the case of appointed officers, by any elected officer upon whom such
power of removal shall have been conferred by the Board of Directors.

          Section 3.  Each of the officers of the corporation elected by the
Board of Directors or appointed by an officer in accordance with these By-laws
shall have the powers and duties prescribed by law, by the By-Laws or by the
Board of Directors and, in the case of appointed officers, the powers and duties
prescribed by the appointing officer, and, unless otherwise prescribed by the
By-Laws or by the Board of Directors or such appointing officer, shall have such
further powers and duties as ordinarily pertain to that office.  The Chairman of
the Board or the President, as determined by the Board of Directors, shall be
the Chief Executive Officer and shall have the general direction of the affairs
of the corporation.

          Section 4.  Unless otherwise provided in these By-Laws, in the absence
or disability of any officer of the corporation, the Board of Directors may,
during such period, delegate such officer's powers and duties to any other
officer or to any director and the person to whom such powers and duties are
delegated shall, for the time being, hold such office.


                                     ARTICLE IV.

                                CERTIFICATES OF STOCK

          Section 1.  The shares of stock of the corporation shall be
represented by certificates, provided that the Board of Directors may provide by
resolution or resolutions that some or all of any or all classes or series of
the corporation's stock shall be uncertificated shares.  Any such resolution
shall not apply to shares represented by a certificate until such certificate is
surrendered to the corporation.  Notwithstanding the adoption of such a
resolution by the Board of Directors, every holder of stock represented by
certificates and upon request every holder of uncertificated shares shall be
entitled to have a certificate signed by, or in the name of the corporation by
the Chairman of the Board of Directors, or the President or a Vice President,
and by the Treasurer or the Secretary of the corporation, or as otherwise
permitted by law, representing the number of shares registered in certificate
form.  Any or all the signatures on the certificate may be a facsimile.

          Section 2.  Transfers of stock shall be made on the books of the
corporation by the holder of the shares in person or by such holder's attorney
upon surrender and cancellation of certificates for a like number of shares, or
as otherwise provided by law with respect to uncertificated shares.

<PAGE>

                                                                             10

          Section 3.  No certificate for shares of stock in the corporation
shall be issued in place of any certificate alleged to have been lost, stolen or
destroyed, except upon production of such evidence of such loss, theft or
destruction and upon delivery to the corporation of a bond of indemnity in such
amount, upon such terms and secured by such surety, as the Board of Directors in
its discretion may require.


                                      ARTICLE V.

                                   CORPORATE BOOKS

          The books of the corporation may be kept outside of the State of
Delaware at such place or places as the Board of Directors may from time to time
determine.


                                     ARTICLE VI.

                             CHECKS, NOTES, PROXIES, ETC.

          All checks and drafts on the corporation's bank accounts and all bills
of exchange and promissory notes, and all acceptances, obligations and other
instruments for the payment of money, shall be signed by such officer or
officers or agent or agents as shall be hereunto authorized from time to time by
the Board of Directors.  Proxies to vote and consents with respect to securities
of other corporations owned by or standing in the name of the corporation may be
executed and delivered from time to time on behalf of the corporation by the
Chairman of the Board, the President, or by such officers as the Board of
Directors may from time to time determine.


                                     ARTICLE VII.

                                     FISCAL YEAR

          The fiscal year of the corporation shall begin on the first day of
January in each year and shall end on the thirty-first day of December
following.


                                    ARTICLE VIII.

                                    CORPORATE SEAL

          The corporate seal shall have inscribed thereon the name of the
corporation.  In lieu of the corporate seal, when so authorized by the Board of
Directors or a duly empowered committee thereof, a facsimile thereof may be
impressed or affixed or reproduced.

<PAGE>

                                                                             11

                                     ARTICLE IX.

                                      AMENDMENTS

          These By-Laws may be amended, added to, rescinded or repealed at any
meeting of the Board of Directors or of the stockholders, provided notice of the
proposed change was given in the notice of the meeting of the stockholders or,
in the case of a meeting of the Board of Directors, in a notice given not less
than two days prior to the meeting; provided, however,  that, notwithstanding
any other provisions of these By-Laws or any provision of law which might
otherwise permit a lesser vote of the stockholders, the affirmative vote of the
holders of at least 80 percent in voting power of all shares of the corporation
entitled to vote generally in the election of directors, voting together as a
single class, shall be required in order for the stockholders to alter, amend or
repeal Section 2 and Section 11 of Article I, Sections 1 and 2 of Article II or
this proviso to this Article IX of these By-Laws or to adopt any provision
inconsistent with any of such Sections or with this proviso.


<PAGE>


                                                                    Exhibit 10.1








                                DISTRIBUTION AGREEMENT

                                       between

                                COGNIZANT CORPORATION

                                         and

                               IMS HEALTH INCORPORATED




                              Dated as of June __, 1998



<PAGE>

                                  TABLE OF CONTENTS

                                                                            PAGE


ARTICLE I.     DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . .  2
     SECTION 1.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .  2
     SECTION 1.2.  References; Interpretation. . . . . . . . . . . . . . . . 13

ARTICLE II.    DISTRIBUTION AND OTHER TRANSACTIONS; CERTAIN COVENANTS. . . . 13
     SECTION 2.1.  The Distribution and Other Transactions . . . . . . . . . 13
     SECTION 2.2.  Intercompany Accounts . . . . . . . . . . . . . . . . . . 18
     SECTION 2.3.  Cash balances . . . . . . . . . . . . . . . . . . . . . . 18
     SECTION 2.4.  Assumption and Satisfaction of Liabilities. . . . . . . . 18
     SECTION 2.5.  Resignations. . . . . . . . . . . . . . . . . . . . . . . 18
     SECTION 2.6.  Further Assurances. . . . . . . . . . . . . . . . . . . . 19
     SECTION 2.7.  Limited Representations or Warranties . . . . . . . . . . 19
     SECTION 2.8.  Guarantees. . . . . . . . . . . . . . . . . . . . . . . . 19
     SECTION 2.9.  Witness Services. . . . . . . . . . . . . . . . . . . . . 20
     SECTION 2.10.  Certain Post-Distribution Transactions . . . . . . . . . 20
     SECTION 2.11.  Transfers Not Effected Prior to the Distribution; 
                    Transfers Deemed Effective as of the Distribution 
                    Date . . . . . . . . . . . . . . . . . . . . . . . . . . 21
     SECTION 2.12.  Conveyancing and Assumption Instruments. . . . . . . . . 22
     SECTION 2.13.  Ancillary Agreements . . . . . . . . . . . . . . . . . . 22
     SECTION 2.14.  Corporate Names. . . . . . . . . . . . . . . . . . . . . 22

ARTICLE III.  INDEMNIFICATION. . . . . . . . . . . . . . . . . . . . . . . . 24
     SECTION 3.1.  Indemnification by the Corporation. . . . . . . . . . . . 24
     SECTION 3.2.  Indemnification by IMS HEALTH . . . . . . . . . . . . . . 24
     SECTION 3.3.  Procedures for Indemnification. . . . . . . . . . . . . . 24
     SECTION 3.4.  Indemnification Payments. . . . . . . . . . . . . . . . . 26

ARTICLE IV.  ACCESS TO INFORMATION . . . . . . . . . . . . . . . . . . . . . 26
     SECTION 4.1.  Provision of Corporate Records. . . . . . . . . . . . . . 26
     SECTION 4.2.  Access to Information . . . . . . . . . . . . . . . . . . 27
     SECTION 4.3.  Reimbursement; Other Matters. . . . . . . . . . . . . . . 27
     SECTION 4.4.  Confidentiality . . . . . . . . . . . . . . . . . . . . . 27
     SECTION 4.5.  Privileged Matters. . . . . . . . . . . . . . . . . . . . 28
     SECTION 4.6.  Ownership of Information. . . . . . . . . . . . . . . . . 29
     SECTION 4.7.  Limitation of Liability . . . . . . . . . . . . . . . . . 30
     SECTION 4.8.  Other Agreements Providing for Exchange of 
                    Information. . . . . . . . . . . . . . . . . . . . . . . 30

ARTICLE V.  ADMINISTRATIVE SERVICES. . . . . . . . . . . . . . . . . . . . . 30
     SECTION 5.1.  Performance of Services . . . . . . . . . . . . . . . . . 30
     SECTION 5.2.  Independence. . . . . . . . . . . . . . . . . . . . . . . 30
     SECTION 5.3.  Non-exclusivity . . . . . . . . . . . . . . . . . . . . . 30

                                          i

<PAGE>

ARTICLE VI.  DISPUTE RESOLUTION. . . . . . . . . . . . . . . . . . . . . . . 31
     SECTION 6.1.  Negotiation . . . . . . . . . . . . . . . . . . . . . . . 31
     SECTION 6.2.  Arbitration . . . . . . . . . . . . . . . . . . . . . . . 31
     SECTION 6.3.  Continuity of Service and Performance . . . . . . . . . . 32

ARTICLE VII.  INSURANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . 32
     SECTION 7.1.  Policies and Rights Included Within Assets; Assignment of
     Policies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
     SECTION 7.2.  Post-Distribution Date Claims . . . . . . . . . . . . . . 32
     SECTION 7.3.  Administration; Other Matters . . . . . . . . . . . . . . 33
     SECTION 7.4.  Agreement for Waiver of Conflict and Shared Defense . . . 34
     SECTION 7.5.  Cooperation . . . . . . . . . . . . . . . . . . . . . . . 34

ARTICLE VIII.  MISCELLANEOUS . . . . . . . . . . . . . . . . . . . . . . . . 35
     SECTION 8.1.  Complete Agreement; Construction. . . . . . . . . . . . . 35
     SECTION 8.2.  Ancillary Agreements. . . . . . . . . . . . . . . . . . . 35
     SECTION 8.3.  Counterparts. . . . . . . . . . . . . . . . . . . . . . . 35
     SECTION 8.4.  Survival of Agreements. . . . . . . . . . . . . . . . . . 35
     SECTION 8.5.  Expenses. . . . . . . . . . . . . . . . . . . . . . . . . 35
     SECTION 8.6.  Notices . . . . . . . . . . . . . . . . . . . . . . . . . 35
     SECTION 8.7.  Waivers . . . . . . . . . . . . . . . . . . . . . . . . . 36
     SECTION 8.8.  Amendments. . . . . . . . . . . . . . . . . . . . . . . . 36
     SECTION 8.9.  Assignment. . . . . . . . . . . . . . . . . . . . . . . . 36
     SECTION 8.10.  Successors and Assigns . . . . . . . . . . . . . . . . . 37
     SECTION 8.11.  Termination. . . . . . . . . . . . . . . . . . . . . . . 37
     SECTION 8.12.  Subsidiaries . . . . . . . . . . . . . . . . . . . . . . 37
     SECTION 8.13.  Third Party Beneficiaries. . . . . . . . . . . . . . . . 37
     SECTION 8.14.  Title and Headings . . . . . . . . . . . . . . . . . . . 37
     SECTION 8.15.  Exhibits and Schedules . . . . . . . . . . . . . . . . . 37
     SECTION 8.16.  GOVERNING LAW. . . . . . . . . . . . . . . . . . . . . . 37
     SECTION 8.17.  Consent to Jurisdiction. . . . . . . . . . . . . . . . . 37
     SECTION 8.18.  Severability . . . . . . . . . . . . . . . . . . . . . . 38


                                          ii

<PAGE>

                                DISTRIBUTION AGREEMENT


          DISTRIBUTION AGREEMENT, dated as of June __, 1998, between COGNIZANT
CORPORATION, a Delaware corporation (the "Corporation") and IMS HEALTH
INCORPORATED, a Delaware corporation ("IMS HEALTH").


          WHEREAS, the Corporation acting through its direct and indirect
subsidiaries, currently conducts a number of businesses, including, without
limitation, (i) providing television audience measurement services (the "Nielsen
Media Research Business"), (ii) providing information and decision support
services to the pharmaceutical and healthcare industries (the "IMS Business"),
(iii) providing software-based administrative and analytical solutions to the
managed care industry (the "ERISCO Business"), (iv) making venture capital
investments in emerging healthcare businesses (the "Enterprises Business") and
(v) providing software application and development services specializing in Year
2000 conversion services (the "Technology Solutions Business").

          WHEREAS, the Board of Directors of the Corporation has determined that
it is appropriate, desirable and in the best interests of the holders of shares
of common stock, par value $0.01 per share, of the Corporation (the "Cognizant
Common Stock"), as well as of the Corporation and its businesses, to reorganize
the Corporation to separate from the Corporation all businesses currently
conducted by the Corporation other than the Nielsen Media Research Business and
to cause such businesses to be owned and conducted, directly or indirectly, by
IMS HEALTH; 

          WHEREAS, in order to effect the separation, the Board of Directors of
the Corporation has determined that it is appropriate, desirable and in the best
interests of the holders of Cognizant Common Stock, as well as of the
Corporation and its businesses, for the Corporation (i) to take certain steps to
reorganize the Corporation's Subsidiaries (as defined herein) and businesses,
including prior to the Distribution (as defined herein) merging I.M.S.
International, Inc. and IMS America, Inc. with and into IMS HEALTH and (ii) upon
the completion of such reorganization to distribute to the holders of the
Cognizant Common Stock all the outstanding shares of common stock of IMS HEALTH
(the "IMS HEALTH Common Shares"), together with the associated Rights (as
defined herein), as set forth herein;

          WHEREAS, each of the Corporation and IMS HEALTH has determined that it
is necessary and desirable, on or prior to the Distribution Date (as defined
herein), to allocate and transfer those assets and to allocate and assign
responsibility for those liabilities in respect of the activities of the
businesses of such entities and those assets and liabilities in respect of other
businesses and activities of the Corporation and its current and former
Subsidiaries and other matters; and

          WHEREAS, each of the Corporation and IMS HEALTH has determined that it
is necessary and desirable to set forth the principal corporate transactions
required to effect such Distribution and to set forth other agreements that will
govern certain other matters following the Distribution.

<PAGE>

                                                                               2

          NOW, THEREFORE, in consideration of the mutual agreements, provisions
and covenants contained in this Agreement, the parties hereby agree as follows:


ARTICLE I.     DEFINITIONS

          SECTION 1.1.  GENERAL.  As used in this Agreement, the following terms
shall have the following meanings:

          (a)  "Action" shall mean any action, suit, arbitration, inquiry,
proceeding or investigation by or before any court, any governmental or other
regulatory or administrative agency, body or commission or any arbitration
tribunal.

          (b)  "Affiliate" shall mean, when used with respect to a specified
person, another person that controls, is controlled by, or is under common
control with the person specified.  As used herein, "control" means the
possession, directly or indirectly, of the power to direct or cause the
direction of the management and policies of such person, whether through the
ownership of voting securities or other interests, by contract or otherwise.

          (c)  "Agent" shall have the meaning set forth in Section 2.1(b).

          (d)  "Agreement Disputes" shall have the meaning set forth in Section
6.1.

          (e)  "Ancillary Agreements" shall mean all of the written agreements,
instruments, assignments or other arrangements (other than this Agreement)
entered into in connection with the transactions contemplated hereby, including,
without limitation, the Conveyancing and Assumption Instruments, the Data
Services Agreements, the Employee Benefits Agreement, the Intellectual Property
Agreement, the Shared Transaction Services Agreements, the Tax Allocation
Agreement and the Transition Services Agreement.  

          (f)  "Assets" shall mean assets, properties and rights (including
goodwill), wherever located (including in the possession of vendors or other
third parties or elsewhere), whether real, personal or mixed, tangible,
intangible or contingent, in each case whether or not recorded or reflected or
required to be recorded or reflected on the books and records or financial
statements of any person, including, without limitation, the following:

          (i)       all accounting and other books, records and files whether in
                    paper, microfilm, microfiche, computer tape or disc,
                    magnetic tape or any other form;

          (ii)      all apparatus, computers and other electronic data
                    processing equipment, fixtures, machinery, equipment,
                    furniture, office equipment, automobiles, trucks, aircraft
                    and other transportation equipment, special and general
                    tools, test devices, prototypes and models and other
                    tangible personal property;

<PAGE>

                                                                              3

          (iii)     all inventories of materials, parts, raw materials,
                    supplies, work-in-process and finished goods and products;

          (iv)      all interests in real property of whatever nature, including
                    easements, whether as owner, mortgagee or holder of a
                    Security Interest in real property, lessor, sublessor,
                    lessee, sublessee or otherwise;

          (v)       all interests in any capital stock or other equity interests
                    of any Subsidiary or any other person, all bonds, notes,
                    debentures or other securities issued by any Subsidiary or
                    any other person, all loans, advances or other extensions of
                    credit or capital contributions to any Subsidiary or any
                    other person and all other investments in securities of any
                    person;

          (vi)      all license agreements, leases of personal property, open
                    purchase orders for raw materials, supplies, parts or
                    services, unfilled orders for the manufacture and sale of
                    products and other contracts, agreements or commitments;

          (vii)     all deposits, letters of credit and performance and surety
                    bonds;

          (viii)    all written technical information, data, specifications,
                    research and development information, engineering drawings,
                    operating and maintenance manuals, and materials and
                    analyses prepared by consultants and other third parties;

          (ix)      all domestic and foreign patents, copyrights, trade names,
                    trademarks, service marks and registrations and applications
                    for any of the foregoing, mask works, trade secrets,
                    inventions, data bases, other proprietary information and
                    licenses from third persons granting the right to use any of
                    the foregoing;

          (x)       all computer applications, programs and other software,
                    including operating software, network software, firmware,
                    middleware, design software, design tools, systems
                    documentation and instructions;

          (xi)      all cost information, sales and pricing data, customer
                    prospect lists, supplier records, customer and supplier
                    lists, customer and vendor data, correspondence and lists,
                    product literature, artwork, design, development and
                    manufacturing files, vendor and customer drawings,
                    formulations and specifications, quality records and reports
                    and other books, records, studies, surveys, reports, plans
                    and documents;

          (xii)     all prepaid expenses, trade accounts and other accounts and
                    notes receivable;

<PAGE>

                                                                              4

          (xiii)    all rights under contracts or agreements, all claims or
                    rights against any person arising from the ownership of any
                    asset, all rights in connection with any bids or offers and
                    all claims, choses in action or similar rights, whether
                    accrued or contingent;

          (xiv)     all rights under insurance policies and all rights in the
                    nature of insurance, indemnification or contribution;

          (xv)      all licenses, permits, approvals and authorizations which
                    have been issued by any Governmental Authority;

          (xvi)     cash or cash equivalents, bank accounts, lock boxes and
                    other deposit arrangements; and

          (xvii)    interest rate, currency, commodity or other swap, collar,
                    cap or other hedging or similar agreements or arrangements.

          (g)  "Assignee" shall have the meaning set forth in Section 2.1(f).

          (h)  "Business Entity" shall mean any corporation, partnership,
limited liability company or other entity which may legally hold title to
Assets.

          (i)  "Claims Administration" shall mean the processing of claims made
under the Shared Policies, including, without limitation, the reporting of
claims to the insurance carriers and the management of the defense of claims.

          (j)  "Code" shall mean the Internal Revenue Code of 1986, as amended,
and the Treasury regulations promulgated thereunder, including any successor
legislation.

          (k)  "Cognizant Common Stock" shall have the meaning set forth in the
recitals hereto.

          (l)  "Commission" shall mean the U.S. Securities and Exchange
Commission.

          (m)  "Conveyancing and Assumption Instruments" shall mean,
collectively, the various agreements, instruments and other documents heretofore
entered into and to be entered into to effect the transfer of Assets and the
assumption of Liabilities in the manner contemplated by this Agreement, or
otherwise arising out of or relating to the transactions contemplated by this
Agreement, which shall be in substantially the forms attached hereto as Schedule
1.1(m) for transfers to be effected pursuant to New York law or the laws of one
of the other states of the United States, or, if not appropriate for a given
transfer, and for transfers to be effected pursuant to non-U.S. laws, shall be
in such other form or forms as the parties agree and as may be required by the
laws of such non-U.S. jurisdictions.

<PAGE>

                                                                              5

          (n)  the "Corporation" or "Cognizant" shall mean Cognizant
Corporation, a Delaware corporation, which will change its name in connection
with the Distribution to "Nielsen Media Research, Inc.".

          (o)  "Corporation Debt" shall mean have the meaning set forth in
Section 2.1(n).

          (p)  "Data Services Agreements" shall mean the Data Services
Agreements between the Corporation and IMS HEALTH.
 
          (q)  "Distribution" shall mean the distribution on the Distribution
Date to holders of record of shares of Cognizant Common Stock as of the
Distribution Record Date of the IMS HEALTH Common Shares owned by the
Corporation on the basis of one IMS HEALTH Common Share for each outstanding
share of Cognizant Common Stock.

          (r)  "Distribution Date" shall mean July 1, 1998.

          (s)  "Distribution Record Date" shall mean as of the close of business
of such date as may be determined by the Corporation's Board of Directors as the
record date for the Distribution.

          (t)  "Effective Time" shall mean immediately prior to the midnight,
New York time, ending the 24-hour period comprising June 30, 1998.

          (u)  "Employee Benefits Agreement" shall mean the Employee Benefits
Agreement between the Corporation and IMS HEALTH. 

          (v)  "Enterprises Business" shall have the meaning set forth in the
recitals hereto.

          (w)  "ERISCO Business" shall have the meaning set forth in the
recitals hereto.

          (x)  "Governmental Authority" shall mean any federal, state, local,
foreign or international court, government, department, commission, board,
bureau, agency, official or other regulatory, administrative or governmental
authority.

          (y)  "IMS Business" shall have the meaning set forth in the recitals
hereto.

          (z)  "IMS HEALTH Assets" shall mean, collectively, all the rights and
Assets owned or held by the Corporation or any Subsidiary of the Corporation
immediately prior to the Effective Time, except the NMR Assets.

          (aa) "IMS HEALTH Business" shall mean each and every business
conducted at any time by the Corporation or any Subsidiary of the Corporation
prior to the Effective Time (including, without limitation, the IMS Business,
the ERISCO Business, the Enterprises Business and the Technology Solutions
Business), except an NMR Business.

<PAGE>

                                                                              6

          (ab) "IMS HEALTH Common Shares" shall have the meaning set forth in
the recitals hereto.

          (ac) "IMS HEALTH Contracts" shall mean all the contracts and
agreements to which the Corporation or any of its Affiliates is a party or by
which it or any of its Affiliates is bound immediately prior to the Effective
Time, except the NMR Contracts.

          (ad) "IMS HEALTH Group" shall mean IMS HEALTH and each person (other
than any member of the NMR Group) that is a Subsidiary of the Corporation
immediately prior to the Effective Time.

          (ae) "IMS HEALTH Indemnitees" shall mean IMS HEALTH, each member of
the IMS HEALTH Group, each of their respective present and former directors,
officers, employees and agents and each of the heirs, executors, successors and
assigns of any of the foregoing, except the NMR Indemnitees, as well as any
present and former directors, officers, employees and agents of the Corporation
prior to the Effective Time and each of their heirs, executors, successors and
assigns.

          (af) "IMS HEALTH Liabilities" shall mean collectively, all obligations
and Liabilities of the Corporation or any Subsidiary of the Corporation
immediately prior to the Effective Time, except the NMR Liabilities.

          (ag) "IMS HEALTH Policies" shall mean all Policies, current or past,
which are owned or maintained by or on behalf of the Corporation or any
Subsidiary of the Corporation immediately prior to the Effective Time which do
not relate to the NMR Business and which Policies are either maintained by IMS
HEALTH or a member of the IMS HEALTH Group or are assignable to IMS HEALTH or a
member of the IMS HEALTH Group.

          (ah) "Indemnifiable Losses" shall mean any and all losses,
liabilities, claims, damages, demands, costs or expenses (including, without
limitation, reasonable attorneys' fees and any and all out-of-pocket expenses)
reasonably incurred in investigating, preparing for or defending against any
Actions or potential Actions or in settling any Action or potential Action or in
satisfying any judgment, fine or penalty rendered in or resulting from any
Action.

          (ai) "Indemnifying Party" shall have the meaning set forth in Section
3.3.

          (aj) "Indemnitee" shall have the meaning set forth in Section 3.3.

          (ak) "Indemnity and Joint Defense Agreement" shall mean the Indemnity
and Joint Defense Agreement dated as of October 28, 1996 by and among the
Corporation, The Dun & Bradstreet Corporation and ACNielsen Corporation.


          (al) "Information Statement" shall mean the Information Statement sent
to the holders of shares of Cognizant Common Stock in connection with the
Distribution, including any amendment or supplement thereto.

<PAGE>

                                                                              7

          (am) "Insurance Administration" shall mean, with respect to each
Shared Policy, the accounting for premiums, retrospectively-rated premiums,
defense costs, indemnity payments, deductibles and retentions, as appropriate,
under the terms and conditions of each of the Shared Policies; and the reporting
to excess insurance carriers of any losses or claims which may cause the per-
occurrence, per claim or aggregate limits of any Shared Policy to be exceeded,
and the distribution of Insurance Proceeds as contemplated by this Agreement.

          (an) "Insurance Proceeds" shall mean those monies (i) received by an
insured from an insurance carrier or (ii) paid by an insurance carrier on behalf
of an insured, in either case net of any applicable premium adjustment,
retrospectively-rated premium, deductible, retention, or cost of reserve paid or
held by or for the benefit of such insured.

          (ao) "Insured Claims" shall mean those Liabilities that, individually
or in the aggregate, are covered within the terms and conditions of any of the
Shared Policies, whether or not subject to deductibles, co-insurance,
uncollectibility or retrospectively-rated premium adjustments.

          (ap) "Intellectual Property Agreement" shall mean the Intellectual
Property Agreement between the Corporation and IMS HEALTH.

          (aq) "IRI Action" shall mean the complaint filed in the United States
District Court for the Southern District of New York on July 29, 1996 by
Information Resources, Inc. naming as defendants The Dun & Bradstreet
Corporation, A. C. Nielsen Company and IMS International, Inc.

          (ar) "Liabilities" shall mean any and all losses, claims, charges,
debts, demands, actions, causes of action, suits, damages, obligations,
payments, costs and expenses, sums of money, accounts, reckonings, bonds,
specialties, indemnities and similar obligations, exonerations, covenants,
contracts, controversies, agreements, promises, doings, omissions, variances,
guarantees, make whole agreements and similar obligations, and other
liabilities, including all contractual obligations, whether absolute or
contingent, matured or unmatured, liquidated or unliquidated, accrued or
unaccrued, known or unknown, whenever arising, and including those arising under
any law, rule, regulation, Action, threatened or contemplated Action (including
the costs and expenses of demands, assessments, judgments, settlements and
compromises relating thereto and attorneys' fees and any and all costs and
expenses, whatsoever reasonably incurred in investigating, preparing or
defending against any such Actions or threatened or contemplated Actions), order
or consent decree of any governmental or other regulatory or administrative
agency, body or commission or any award of any arbitrator or mediator of any
kind, and those arising under any contract, commitment or undertaking, including
those arising under this Agreement or any Ancillary Agreement, in each case,
whether or not recorded or reflected or required to be recorded or reflected on
the books and records or financial statements of any person.

          (as) "Nielsen Media Research Business" shall have the meaning set
forth in the recitals hereto.

<PAGE>

                                                                              8

          (at) "1996 Distribution" shall mean the Distribution described in the
1996 Distribution Agreement.


          (au) "1996 Distribution Agreement" shall mean the Distribution
Agreement among the Corporation, The Dun & Bradstreet Corporation and ACNielsen
Corporation dated as of October 28, 1996.

          (av) "NMR" shall mean Nielsen Media Research, Inc., a Delaware
corporation and a wholly-owned subsidiary of the Corporation.

          (aw) "NMR Assets" shall mean:

          (i)    the ownership interests in those Business Entities listed on
                 Schedule 1.1(aw)(i);

          (ii)   any and all Assets that are expressly contemplated by this
                 Agreement, including those on the list of pre-Distribution
                 reorganization transactions attached as Schedule 1.1(aw)(ii)
                 hereto, or any Ancillary Agreement (or included on any
                 Schedule hereto or thereto) as Assets which have been or are
                 to be transferred to the Corporation, NMR or any other member
                 of the NMR Group prior to the Effective Time or are to remain
                 with the Corporation, NMR or any member of the NMR Group
                 subsequent to the Effective Time;

          (iii)  any Assets reflected on the NMR Balance Sheet or the
                 accounting records supporting such balance sheet and any
                 Assets acquired by or for NMR or any member of the NMR Group
                 subsequent to the date of such balance sheet which, had they
                 been so acquired on or before such date and owned as of such
                 date, would have been reflected on such balance sheet if
                 prepared on a consistent basis, subject to any dispositions of
                 any of such Assets subsequent to the date of such balance
                 sheet;

          (iv)   subject to Article VII, any rights of any member of the NMR
                 Group under any of the Policies, including any rights
                 thereunder arising from and after the Effective Time in
                 respect of any Policies that are occurrence policies;

          (v)    any NMR Contracts, any rights or claims arising thereunder,
                 and any other rights or claims or contingent rights or claims
                 primarily relating to or arising from any NMR Asset or the NMR
                 Business; and

          (vi)   any and all Assets of the Corporation from and after the
                 Effective Time.

                    Notwithstanding the foregoing, the NMR Assets shall not in
               any event include:

<PAGE>

                                                                              9

               (w)  any rights of the Corporation under (i) the 1996
                    Distribution Agreement or (ii) the Tax Allocation Agreement,
                    Employee Benefits Agreement or any Ancillary Agreement
                    referred to in the 1996 Distribution Agreement; or

               (x)  the Corporation's interest in the capital stock of the
                    Gartner Group, Inc. and any other Assets listed or described
                    on Schedule 1.1(aw)(x); or

               (y)  any Assets primarily relating to or used in any terminated
                    or divested Business Entity, business or operation formerly
                    owned or managed by or associated with the Corporation, NMR
                    or any NMR Business, except for those Assets primarily
                    relating to or used in those Business Entities, businesses
                    or operations listed on Schedule 1.1(aw)(y); or

               (z)  any and all Assets that are expressly contemplated by this
                    Agreement or any Ancillary Agreement (or the Schedules
                    hereto or thereto) as Assets to be transferred or conveyed
                    to any member of the IMS HEALTH Group.

               In the event of any inconsistency or conflict which may arise in
               the application or interpretation of any of the foregoing
               provisions, for the purpose of determining what is and is not an
               NMR Asset, any item explicitly included on a Schedule referred to
               in this Section 1.1(aw) shall take priority over any provision of
               the text hereof, and clause (ii) shall take priority over clause
               (iii) hereof of this paragraph (aw).

          (ax) "NMR Balance Sheet" shall mean the combined balance sheet of the
NMR Group, including the notes thereto, as of March 31, 1998, set forth as
Schedule 1.1(ax) hereto.

          (ay) "NMR Business" shall mean (i) the Nielsen Media Research
Business, (ii) the businesses of the members of the NMR Group, (iii) any other
business conducted by the Corporation or any Subsidiary of the Corporation
primarily through the use of the NMR Assets, (iv) the businesses of Business
Entities acquired or established by or for NMR or any of its Subsidiaries after
the date of this Agreement and (v) the business of the Corporation from and
after the Effective Time.

          (az) "NMR Contracts" shall mean the following contracts and agreements
to which the Corporation or any of its Affiliates is a party or by which it or
any of its Affiliates or any of their respective Assets is bound, whether or not
in writing, except for any such contract or agreement that is not expressly
contemplated to be transferred or assigned to the Corporation, NMR or any other
member of the NMR Group prior to the Effective Time, or to remain with the
Corporation, NMR or any other member of the NMR Group subsequent to the
Effective Time, pursuant to any provision of this Agreement or any Ancillary
Agreement:

<PAGE>

                                                                             10

          (i)    the TAM Master Agreement (as defined herein) and any contracts
                 or agreements listed or described on Schedule 1.1(az)(i);

          (ii)   any contract or agreement entered into in the name of, or
                 expressly on behalf of, any division, business unit or member
                 of the NMR Group;

          (iii)  any contract or agreement that relates primarily to the NMR
                 Business;

          (iv)   federal, state and local government and other contracts and
                 agreements that are listed or described on Schedule
                 1.1(az)(iv) and any other government contracts or agreements
                 entered into after the date hereof and prior to the Effective
                 Time that relate primarily to the NMR Business;

          (v)    any contract or agreement representing capital or operating
                 equipment lease obligations reflected on the NMR Balance
                 Sheet, including obligations as lessee under those contracts
                 or agreements listed on Schedule 1.1(az)(v);

          (vi)   any contract or agreement that is otherwise expressly
                 contemplated pursuant to this Agreement or any of the
                 Ancillary Agreements to be transferred or assigned to the
                 Corporation or any member of the NMR Group prior to the
                 Effective Time or to remain with the Corporation or any member
                 of the NMR Group subsequent to the Effective Time; and

          (vii)  any guarantee, indemnity, representation or warranty of any
                 member of the NMR Group.

          (ba)   "NMR Group" shall mean (i) NMR, (ii) each Business Entity
which is contemplated to become a Subsidiary of the Corporation or NMR hereunder
prior to the Effective Time or to remain a Subsidiary of the Corporation or NMR
hereunder subsequent to the Effective Time, which shall include those identified
as such on Schedule 1.1(aw)(i) hereto, which Schedule shall also indicate the
amount of the Corporation's or NMR's direct or indirect ownership interest
therein, and (iii) the Corporation from and after the Effective Time.

          (bb)   "NMR Indemnitees" shall mean NMR, each member of the NMR
Group, each of their respective present and former directors, officers,
employees and agents and each of the heirs, executors, successors and assigns of
any of the foregoing.

          (bc)   "NMR Liabilities" shall mean:

          (i)    any and all Liabilities that are expressly contemplated by
                 this Agreement or any Ancillary Agreement (or the Schedules
                 hereto or thereto, including Schedule 1.1(bc) hereto) as
                 Liabilities to be assumed by the Corporation or any member of
                 the NMR Group prior to the Effective Time or to remain with
                 the Corporation or any member of the NMR Group subsequent to
                 the Effective Time, and all agreements, obligations and 

<PAGE>

                                                                             11

                 Liabilities of the Corporation or any member of the NMR Group
                 under this Agreement or any of the Ancillary Agreements;

          (ii)   all Liabilities (other than Taxes and any employee-related
                 Liabilities subject to the provisions of the Tax Allocation
                 Agreement and the Employee Benefits Agreement, respectively),
                 primarily relating to, arising out of or resulting from:

                    (A)  the operation of the NMR Business, as conducted at any
                 time prior to, on or after the Effective Time (including any
                 Liability relating to, arising out of or resulting from any
                 act or failure to act by any director, officer, employee,
                 agent or representative (whether or not such act or failure to
                 act is or was within such person's authority));

                    (B)  the operation of any business conducted by the
                 Corporation or any Subsidiary of the Corporation at any time
                 from and after the Effective Time (including any Liability
                 relating to, arising out of or resulting from any act or
                 failure to act by any director, officer, employee, agent or
                 representative (whether or not such act or failure to act is
                 or was within such person's authority)); or

                    (C)  any NMR Assets; 

                 whether arising before, on or after the Effective Time;

          (iii)  all Liabilities reflected as liabilities or obligations on the
                 NMR Balance Sheet or the accounting records supporting such
                 balance sheet, and all Liabilities arising or assumed after
                 the date of such balance sheet which, had they arisen or been
                 assumed on or before such date and been retained as of such
                 date, would have been reflected on such balance sheet, subject
                 to any discharge of such Liabilities subsequent to the date of
                 the NMR Balance Sheet; and

          (iv)   the Corporation Debt.

          Notwithstanding the foregoing, the NMR Liabilities shall not include:

          (x)  any Liabilities that are expressly contemplated by this Agreement
               or any Ancillary Agreement (or the Schedules hereto or thereto)
               as Liabilities to be assumed by IMS HEALTH or any member of the
               IMS HEALTH Group, including any Liabilities set forth in Schedule
               1.1(bc)(x);

          (y)  any Liabilities primarily relating to, arising out of or
               resulting from any terminated or divested Business Entity,
               business or operation formerly owned or managed by or associated
               with the Corporation or any NMR Business except for Liabilities
               primarily relating to, arising out of or 

<PAGE>

                                                                             12

               resulting from those Business Entities, businesses or operations
               listed in Schedule 1.1(bc)(y); or

          (z)  all agreements and obligations of any member of the IMS HEALTH
               Group under this Agreement or any of the Ancillary Agreements.

          (bd) "NMR Policies" shall mean all Policies, current or past, which
are owned or maintained by or on behalf of the Corporation or any Subsidiary of
the Corporation immediately prior to the Effective Time, which do not relate to
the IMS HEALTH Business.

          (be) "person" shall mean any natural person, Business Entity,
corporation, business trust, joint venture, association, company, partnership,
other entity or government, or any agency or political subdivision thereof.

          (bf) "Policies" shall mean insurance policies and insurance contracts
of any kind (other than life and benefits policies or contracts), including,
without limitation, primary, excess and umbrella policies, comprehensive general
liability policies, director and officer liability, fiduciary liability,
automobile, aircraft, property and casualty, workers' compensation and employee
dishonesty insurance policies, bonds and self-insurance and captive insurance
company arrangements, together with the rights, benefits and privileges
thereunder.  

          (bg) "Provider" shall have the meaning set forth in Section 5.1.

          (bh) "Recipient" shall have the meaning set forth in Section 5.1.

          (bi) "Records" shall have the meaning set forth in Section 4.1.

          (bj) "Rights" shall have the meaning set forth in Section 2.1(c).

          (bk) "Rules" shall have the meaning set forth in Section 6.2.

          (bl) "Security Interest" shall mean any mortgage, security interest,
pledge, lien, charge, claim, option, right to acquire, voting or other
restriction, right-of-way, covenant, condition, easement, encroachment,
restriction on transfer, or other encumbrance of any nature whatsoever.

          (bm) "Shared Policies" shall mean all Policies, current or past, which
are owned or maintained by or on behalf of the Corporation or any Subsidiary of
the Corporation immediately prior to the Effective Time which relate to the IMS
HEALTH Business and the NMR Business.

          (bn) "Shared Transaction Services Agreements" shall mean the Shared
Transaction Services Agreements between the Corporation and IMS HEALTH (or
Subsidiaries thereof).

<PAGE>

                                                                             13

          (bo) "Subsidiary" shall mean any corporation, partnership or other
entity of which another entity (i) owns, directly or indirectly, ownership
interests sufficient to elect a majority of the Board of Directors (or persons
performing similar functions) (irrespective of whether at the time any other
class or classes of ownership interests of such corporation, partnership or
other entity shall or might have such voting power upon the occurrence of any
contingency) or (ii) is a general partner or an entity performing similar
functions (E.G., a trustee).

          (bp) "TAM Master Agreement" shall mean the master agreement between
the Corporation and ACNielsen Corporation, including any agreements ancillary
thereto, relating to the conduct of the television audience measurement business
after the 1996 Distribution. 

          (bq) "Tax" shall have the meaning set forth in the Tax Allocation
Agreement.

          (br) "Tax Allocation Agreement" shall mean the Tax Allocation
Agreement between the Corporation and IMS HEALTH. 

          (bs) "Technology Solutions Business" shall have the meaning set forth
in the recitals hereto.
          
          (bt) "Third Party Claim" shall have the meaning set forth in Section
          3.3.

          (bu) "Transition Services Agreement" shall mean the Transition
Services Agreement between the Corporation and IMS HEALTH. 


          SECTION 1.2.  REFERENCES; INTERPRETATION.  References in this
Agreement to any gender include references to all genders, and references to the
singular include references to the plural and vice versa.  The words "include",
"includes" and "including" when used in this Agreement shall be deemed to be
followed by the phrase "without limitation".  Unless the context otherwise
requires, references in this Agreement to Articles, Sections, Exhibits and
Schedules shall be deemed references to Articles and Sections of, and Exhibits
and Schedules to, such Agreement.  Unless the context otherwise requires, the
words "hereof", "hereby" and "herein" and words of similar meaning when used in
this Agreement refer to this Agreement in its entirety and not to any particular
Article, Section or provision of this Agreement.


ARTICLE II.    DISTRIBUTION AND OTHER TRANSACTIONS; CERTAIN COVENANTS

          SECTION 2.1.  THE DISTRIBUTION AND OTHER TRANSACTIONS.

          (a)  CERTAIN TRANSACTIONS.  On or prior to the Distribution Date:

          (i)    the Corporation shall, on behalf of itself and its
     Subsidiaries, transfer or cause to be transferred to IMS HEALTH or another
     member of the IMS HEALTH Group, 

<PAGE>

                                                                             14

     effective prior to or as of the Effective Time, all of the Corporation's
     and its Subsidiaries' right, title and interest in the IMS HEALTH Assets.  

          (ii)   IMS HEALTH shall to the extent not already held by the
     Corporation or a member of the NMR Group, on behalf of itself and its
     Subsidiaries, transfer or cause to be transferred to the Corporation or a
     member of the NMR Group, effective prior to or as of the Effective Time,
     all of IMS HEALTH's and its Subsidiaries' right, title and interest in the
     NMR Assets.  

          (iii)  to the extent not indicated by Schedule 1.1(aw)(i) or (ii) or
     otherwise agreed by the parties hereto, the Corporation or IMS HEALTH, as
     applicable, shall be entitled to designate the Business Entity within the
     NMR Group or the IMS HEALTH Group, as applicable, to which any Assets are
     to be transferred pursuant to this Section 2.1(a).

          (b)  STOCK DIVIDEND TO THE CORPORATION.  On or prior to the
Distribution Date, IMS HEALTH shall issue to the Corporation as a stock dividend
(i) such number of IMS HEALTH Common Shares as will be required to effect the
Distribution, as certified by the Corporation's stock transfer agent (the
"Agent").  In connection therewith the Corporation shall deliver to IMS HEALTH
for cancellation the share certificate held by it representing IMS HEALTH Common
Shares and shall receive a new certificate or certificates representing the
total number of IMS HEALTH Common Shares to be owned by the Corporation after
giving effect to such stock dividend.

          (c)  CHARTERS; BY-LAWS; RIGHTS PLANS.  On or prior to the Distribution
Date, all necessary actions shall have been taken to provide for the adoption of
the form of Certificate of Incorporation and By-laws and the execution and
delivery of the form of Rights Agreement, relating to the preferred share
purchase rights relating to the IMS HEALTH Common Shares (the "Rights"), filed
by IMS HEALTH with the Commission as exhibits to IMS HEALTH's Registration
Statement on Form 10 (the "Form 10").

          (d)  DIRECTORS.  On or prior to the Distribution Date, the Corporation
as the sole stockholder of IMS HEALTH, shall have taken all necessary action on
or prior to the Distribution Date to cause the Board of Directors of IMS HEALTH
to consist of the individuals identified in the Information Statement as
directors of IMS HEALTH.

          (e)  CERTAIN LICENSES AND PERMITS.  Without limiting the generality of
the obligations set forth in Section 2.1(a), on or prior to the Distribution
Date or as soon as reasonably practicable thereafter:

          (i)   all transferable licenses, permits and authorizations issued by
     any Governmental Authority which do not relate primarily to the NMR
     Business but which are held in the name of the Corporation or any member of
     the NMR Group, or in the name of any employee, officer, director,
     stockholder or agent of the Corporation or any such member, or otherwise,
     on behalf of a member of the IMS HEALTH Group shall be 

<PAGE>

                                                                             15

     duly and validly transferred or caused to be transferred by the Corporation
     to the appropriate member of the IMS HEALTH Group; and

          (ii)   all transferable licenses, permits and authorizations issued by
     Governmental Authorities which relate primarily to the NMR Business but
     which are held in the name of any member of the IMS HEALTH Group, or in the
     name of any employee, officer, director, stockholder, or agent of any such
     member, or otherwise, on behalf of a member of the NMR Group shall be duly
     and validly transferred or caused to be transferred by IMS HEALTH to the
     Corporation or the appropriate member of the NMR Group.

          (f)  TRANSFER OF AGREEMENTS.  Without limiting the generality of the
obligations set forth in Section 2.1(a):

          (i)      the Corporation hereby agrees that on or prior to the
     Distribution Date or as soon as reasonably practicable thereafter, subject
     to the limitations set forth in this Section 2.1(f), it will, and it will
     cause each member of the NMR Group to, assign, transfer and convey to the
     appropriate member of the IMS HEALTH Group all of the Corporation's or such
     member of the NMR Group's respective right, title and interest in and to
     any and all IMS HEALTH Contracts;  

          (ii)     IMS HEALTH hereby agrees that on or prior to the
     Distribution Date or as soon as reasonably practicable thereafter, subject
     to the limitations set forth in this Section 2.1(f), it will, and it will
     cause each member of the IMS HEALTH Group to, assign, transfer and convey
     to the Corporation or the appropriate member of the NMR Group all of IMS
     HEALTH's or such member of the IMS HEALTH Group's respective right, title
     and interest in and to any and all NMR Contracts;

          (iii)    subject to the provisions of this Section 2.1(f), any
     agreement to which any of the parties hereto or any of their Subsidiaries
     is a party that inures to the benefit of both the NMR Business and the IMS
     HEALTH Business shall be assigned in part so that each party shall be
     entitled to the rights and benefits inuring to its business under such
     agreement;

          (iv)     the assignee of any agreement assigned, in whole or in part,
     hereunder (an "Assignee") shall assume and agree to pay, perform, and fully
     discharge all obligations of the assignor under such agreement or, in the
     case of a partial assignment under paragraph (f)(iii), such Assignee's
     related portion of such obligations as determined in accordance with the
     terms of the relevant agreement, where determinable on the face thereof,
     and otherwise as determined in accordance with the practice of the parties
     prior to the Distribution; and

          (v)      notwithstanding anything in this Agreement to the contrary,
     this Agreement shall not constitute an agreement to assign any agreement,
     in whole or in part, or any rights thereunder if the agreement to assign or
     attempt to assign, without the consent of a third party, would constitute a
     breach thereof or in any way adversely affect 

<PAGE>

                                                                             16

     the rights of the assignor or Assignee thereof.  Until such consent is
     obtained, or if an attempted assignment thereof would be ineffective or
     would adversely affect the rights of any party hereto so that the intended
     Assignee would not, in fact, receive all such rights, the parties will
     cooperate with each other in any arrangement designed to provide for the
     intended Assignee the benefits of, and to permit the intended Assignee to
     assume liabilities under, any such agreement.

          (g)    CONSENTS.  The parties hereto shall use their commercially
reasonable efforts to obtain required consents to transfer and/or assignment of
licenses, permits and authorizations of Governmental Authorities and of
agreements hereunder.

          (h)    DELIVERY OF SHARES TO AGENT.  The Corporation shall deliver to
the Agent the share certificates representing the IMS HEALTH Common Shares
issued to the Corporation by IMS HEALTH pursuant to Section 2.1(b) which are to
be distributed to the holders of Cognizant Common Stock in the Distribution and
shall instruct the Agent to distribute, on or as soon as practicable following
the Distribution Date, certificates representing such IMS HEALTH Common Shares
to holders of record of shares of Cognizant Common Stock on the Distribution
Record Date as further contemplated by the Information Statement and herein. 
IMS HEALTH shall provide all share certificates that the Agent shall require in
order to effect the Distribution.

          (i)    CERTAIN LIABILITIES.  For purposes of this Agreement,
including Article III hereof, IMS HEALTH agrees with the Corporation that:

          (i)    any and all Liabilities arising from or related to Cognizant's
     agreements to acquire Walsh International Inc. and Pharmaceutical Marketing
     Services Inc. or any filings with the Commission or any other governmental
     or regulatory authority related thereto shall be deemed to be IMS HEALTH
     Liabilities and not NMR Liabilities;

          (ii)   any and all Liabilities arising from or based upon
     "controlling person" liability relating to the Form 10 filed by IMS HEALTH
     shall be deemed to be IMS HEALTH Liabilities and not NMR Liabilities; and

          (iii)  notwithstanding Section 2.1(m) below, any and all Liabilities
     arising from or related to the spin-off of the Corporation and ACNielsen
     Corporation from The Dun & Bradstreet Corporation pursuant to the 1996
     Distribution Agreement, other than those set forth on Schedule 2.1(i) or
     allocated to NMR pursuant to Section 2.1(j), shall be deemed to be IMS
     HEALTH Liabilities and not NMR Liabilities.

          (j)    CERTAIN CONTINGENCIES.  For purposes of this Agreement,
including Article III hereof, each of IMS HEALTH and the Corporation agrees
that:

          (i)    notwithstanding anything to the contrary herein or in the Tax
     Allocation Agreement, each of the Corporation and IMS HEALTH shall be
     liable for a portion of the liabilities related to certain prior business
     transactions to the extent and in the circumstances described in Schedule
     2.1(j)(i); 

<PAGE>

                                                                             17

          (ii)   any and all Liabilities of Cognizant under the Indemnity and
     Joint Defense Agreement or otherwise related to the IRI Action, including
     legal fees and expenses related thereto, shall be allocated 75% to the IMS
     HEALTH Group (and thereby become IMS HEALTH Liabilities hereunder) and 25%
     to the NMR Group (and thereby become NMR Liabilities hereunder); PROVIDED
     that any such legal fees and expenses incurred prior to January 1, 1999
     shall be IMS HEALTH Liabilities and not NMR Liabilities; and PROVIDED
     FURTHER that the aggregate amount of NMR Liabilities under Section
     2.1(j)(i) and this Section 2.1(j)(ii) shall be limited to $125 million, and
     any amounts in excess of $125 million shall be IMS HEALTH Liabilities; and

          (iii)  notwithstanding anything to the contrary herein or in the Tax
     Allocation Agreement, each of the Corporation and IMS HEALTH agree that the
     Corporation's interests in certain prior business transactions described on
     Schedule 2.1(j)(i) of the 1996 Distribution Agreement shall be held by IMS
     HEALTH or a member of the IMS HEALTH Group and not by NMR or any member of
     the NMR Group and any rights or Liabilities arising in connection with such
     interests and any transactions relating thereto shall be IMS HEALTH rights
     and Liabilities and not NMR rights and Liabilities.

          (k)  MATTERS RELATING TO CERTAIN PARTNERSHIPS.  Each of the
Corporation and IMS HEALTH agrees that the interests in Cognizant Licensing
Associates, L.P. held by members of the NMR Group will be retired prior to the
Distribution.

          (l)  OTHER TRANSACTIONS.  On or prior to the Distribution Date, each
of the Corporation and IMS HEALTH shall consummate those other transactions in
connection with the Distribution that are contemplated by the ruling request
submissions by the Corporation to the Internal Revenue Service in respect of the
ruling granted on May __, 1998, and not specifically referred to in
subparagraphs (a)-(k) above.  After the Distribution Date, each of the
Corporation and IMS HEALTH will exercise good faith commercially reasonable
efforts to consummate as promptly as practicable all other transactions which
must be consummated in order fully to complete the Distribution and any of the
transactions contemplated hereby or by any of the Ancillary Agreements.

          (m)  UNDERTAKING OF IMS HEALTH.  On or prior to the Distribution Date,
IMS HEALTH will undertake to each of The Dun & Bradstreet Corporation and
ACNielsen Corporation to be jointly and severally liable for all "Cognizant
Liabilities" (as defined in the 1996 Distribution Agreement) under the 1996
Distribution Agreement pursuant to an undertaking substantially in the form of
Exhibit 2.1(m) hereto.

          (n)  CORPORATION DEBT.  In connection with the Distribution, the
Corporation shall borrow up to an aggregate of $300 million, the proceeds of
which will be used to repay existing intercompany indebtedness to certain
members of the IMS HEALTH Group.  This borrowing shall be an obligation of the
Corporation after the Distribution. 

          (o)  COGNIZANT COMMON STOCK HELD BY IMSA.  IMS HEALTH agrees that
promptly after the Distribution it will dispose of (or cause to be disposed) the
800,000 shares of Cognizant Common Stock currently owned by IMS America, Ltd.

<PAGE>

                                                                             18

          (p)  1996 DISTRIBUTION.  The Corporation agrees that it will not take
any action it is required or permitted to take pursuant to the terms of (i) the
1996 Distribution Agreement or (ii) the Indemnity and Joint Defense Agreement,
the Tax Allocation Agreement, the Employee Benefits Agreement or any Ancillary
Agreement referred to in the 1996 Distribution Agreement, in each such case
without the prior written consent of IMS HEALTH.

          (q)  COGNIZANT RESTRICTED STOCK.  At the time of the Distribution, the
Corporation shall contribute to IMS HEALTH any IMS HEALTH Common Shares received
by the Corporation as a result of the forfeiture of restricted Cognizant Common
Stock by employees of the Corporation in connection with the Distribution.

          SECTION 2.2.  INTERCOMPANY ACCOUNTS. 

          All intercompany receivables, payables and loans (other than
receivables, payables and loans otherwise specifically provided for hereunder or
under any Ancillary Agreement, including payables created or required hereby or
by any Ancillary Agreement), including, without limitation, in respect of any
cash balances, any cash balances representing deposited checks or drafts for
which only a provisional credit has been allowed or any cash held in any
centralized cash management system between any member of the IMS HEALTH Group,
on the one hand, and the Corporation or any member of the NMR Group, on the
other hand, which exist and are reflected in the accounting records of the
relevant parties as of ______ __, 1998 or which arise on or after ______ __,
1998 shall be paid or settled in the ordinary course of business in a manner
consistent with the payment or settlement of similar accounts arising from
transactions with third parties.

          SECTION 2.3.  CASH BALANCES.  In addition to any other obligations
hereunder or under any Ancillary Agreement or otherwise, on the Distribution
Date, the Corporation shall deliver, in immediately available funds, $___
million to IMS HEALTH.

          SECTION 2.4.  ASSUMPTION AND SATISFACTION OF LIABILITIES.  Except as
otherwise specifically set forth in any Ancillary Agreement, and subject to
Section 2.3 hereof, from and after the Effective Time, (i) the Corporation
shall, and shall cause each member of the NMR Group to, assume, pay, perform and
discharge all NMR Liabilities and (ii) IMS HEALTH shall, and shall cause each
member of the IMS HEALTH Group to, assume, pay, perform and discharge all IMS
HEALTH Liabilities.  To the extent reasonably requested to do so by another
party hereto, each party hereto agrees to sign such documents, in a form
reasonably satisfactory to such party, as may be reasonably necessary to
evidence the assumption of any Liabilities hereunder.

          SECTION 2.5.  RESIGNATIONS. (a)  Subject to Section 2.5(b), the
Corporation and NMR shall cause all their employees to resign, effective as of
the Distribution Date, from all positions as officers or directors of any member
of the IMS HEALTH Group in which they serve, and IMS HEALTH shall cause all its
employees to resign, effective as of the Effective Time, from all positions as
officers or directors of the Corporation or any members of the NMR Group in
which they serve.

<PAGE>

                                                                             19

          (b) No person shall be required by any party hereto to resign from any
position or office with another party hereto if such person is disclosed in the
Information Statement as the person who is to hold such position or office
following the Distribution.

          SECTION 2.6.  FURTHER ASSURANCES.  In case at any time after the
Effective Time any further action is reasonably necessary or desirable to carry
out the purposes of this Agreement and the Ancillary Agreements, the proper
officers of each party to this Agreement shall take all such necessary action. 
Without limiting the foregoing, the Corporation and IMS HEALTH shall use their
commercially reasonable efforts promptly to obtain all consents and approvals,
to enter into all amendatory agreements and to make all filings and applications
that may be required for the consummation of the transactions contemplated by
this Agreement and the Ancillary Agreements, including, without limitation, all
applicable governmental and regulatory filings.

          SECTION 2.7.  LIMITED REPRESENTATIONS OR WARRANTIES.  Each of the
parties hereto agrees that no party hereto is, in this Agreement or in any other
agreement or document contemplated by this Agreement or otherwise, making any
representation or warranty whatsoever, as to title or value of Assets being
transferred.  It is also agreed that, notwithstanding anything to the contrary
otherwise expressly provided in the relevant Conveyancing and Assumption
Instrument, all Assets either transferred to or retained by the parties, as the
case may be, shall be "as is, where is" and that (subject to Section 2.6) the
party to which such Assets are to be transferred hereunder shall bear the
economic and legal risk that such party's or any of the Subsidiaries' title to
any such Assets shall be other than good and marketable and free from
encumbrances.  Similarly, each party hereto agrees that, except as otherwise
expressly provided in the relevant Conveyancing and Assumption Instrument, no
party hereto is representing or warranting in any way that the obtaining of any
consents or approvals, the execution and delivery of any amendatory agreements
and the making of any filings or applications contemplated by this Agreement
will satisfy the provisions of any or all applicable agreements or the
requirements of any or all applicable laws or judgments, it being agreed that
the party to which any Assets are transferred shall bear the economic and legal
risk that any necessary consents or approvals are not obtained or that any
requirements of laws or judgments are not complied with.

          SECTION 2.8.  GUARANTEES. (a)  Except as otherwise specified in any
Ancillary Agreement, the Corporation and IMS HEALTH shall use their commercially
reasonable efforts to have, on or prior to the Distribution Date, or as soon as
practicable thereafter, the Corporation and any member of the NMR Group removed
as guarantor of or obligor for any IMS HEALTH Liability, including, without
limitation, in respect of those guarantees set forth on Schedule 2.8(a) to the
extent that they relate to IMS HEALTH Liabilities.

          (b) Except as otherwise specified in any Ancillary Agreement, the
Corporation and IMS HEALTH shall use their commercially reasonable efforts to
have, on or prior to the Distribution Date, or as soon as practicable
thereafter, any member of the IMS HEALTH Group removed as guarantor of or
obligor for any NMR Liability, including, without limitation, in respect of
those guarantees set forth on Schedule 2.8(b) to the extent that they relate to
NMR Liabilities.

<PAGE>

                                                                             20

          (c) If the Corporation or IMS HEALTH is unable to obtain, or to cause
to be obtained, any such required removal as set forth in clauses (a) or (b) of
this Section 2.8, the applicable guarantor or obligor shall continue to be bound
as such and, unless not permitted by law or the terms thereof, the relevant
beneficiary shall or shall cause one of its Subsidiaries, as agent or
subcontractor for such guarantor or obligor to pay, perform and discharge fully
all the obligations or other liabilities of such guarantor or obligor thereunder
from and after the date hereof.

          SECTION 2.9.  WITNESS SERVICES.  At all times from and after the
Distribution Date, each of the Corporation and IMS HEALTH shall use their
commercially reasonable efforts to make available to the other, upon reasonable
written request, its and its Subsidiaries' officers, directors, employees and
agents as witnesses to the extent that (i) such persons may reasonably be
required in connection with the prosecution or defense of any Action in which
the requesting party may from time to time be involved and (ii) there is no
conflict in the Action between the requesting party and the Corporation or IMS
HEALTH as applicable.  A party providing witness services to the other party
under this Section shall be entitled to receive from the recipient of such
services, upon the presentation of invoices therefor, payments for such amounts,
relating to disbursements and other out-of-pocket expenses (which shall be
deemed to exclude the costs of salaries and benefits of employees who are
witnesses), as may be reasonably incurred in providing such witness services.

          SECTION 2.10.  CERTAIN POST-DISTRIBUTION TRANSACTIONS.  (a)(i) The
Corporation shall comply and shall cause its Subsidiaries to comply with and
otherwise not take action inconsistent with each representation and statement
made to the Internal Revenue Service in connection with the request by the
Corporation for a ruling letter in respect of the Distribution as to certain tax
aspects of the Distribution and (ii) until two years after the Distribution
Date, the Corporation will maintain its status as a company engaged in the
active conduct of a trade or business, as defined in Section 355(b) of the Code.

          (b)(i) IMS HEALTH shall comply and shall cause its Subsidiaries to
comply with and otherwise not take action inconsistent with each representation
and statement made to the Internal Revenue Service in connection with the
request by the Corporation for a ruling letter in respect of the Distribution as
to certain tax aspects of the Distribution and (ii) until two years after the
Distribution Date, IMS HEALTH will maintain its status as a company engaged in
the active conduct of a trade or business, as defined in Section 355(b) of the
Code.

          (c) The Corporation agrees that until two years after the Distribution
Date, it will not (i) merge or consolidate with or into any other corporation,
(ii) liquidate or partially liquidate, (iii) sell or transfer all or
substantially all of its assets (within the meaning of Rev. Proc. 77-37, 1977 -
2 C.B. 568) in a single transaction or series of related transactions, (iv)
redeem or otherwise repurchase any Cognizant Common Stock (other than as
described in Section 4.05(1)(b) of Rev. Proc. 96-30, 1996-1 C.B. 696), or (v)
take any other action or actions which in the aggregate would have the effect of
causing or permitting one or more persons to acquire directly or indirectly
stock representing a 50 percent or greater interest (within the meaning of
Section 355(e) of the Code) in the Corporation, unless prior to taking such
action the Corporation has obtained (and provided to IMS HEALTH) a written
opinion of a law firm reasonably acceptable 


<PAGE>

                                                                             21

to IMS HEALTH, or a supplemental ruling from the Internal Revenue Service, that
such action or actions will not result in (i) the Distribution failing to
qualify under Section 355(a) of the Code or (ii) the IMS HEALTH Common Shares
failing to qualify as qualified property for purposes of Section 355(c)(2) of
the Code by reason of Section 355(e) of the Code. 

          (d) Notwithstanding anything to the contrary herein or in the Tax
Allocation Agreement, if the Corporation or IMS HEALTH (or any of their
respective Subsidiaries) fails to comply with any of its obligations under
Sections 2.10(a), 2.10(b) and 2.10(c) above or takes or fails to take any action
on or after the Distribution Date, and such failure to comply, action or
omission contributes to a determination that (i) the Distribution fails to
qualify under Section 355(a) of the Code or (ii) the IMS HEALTH Common Shares
fail to qualify as qualified property for purposes of Section 355(c)(2) of the
Code by reason of Section 355(e) of the Code, then such party shall indemnify
and hold harmless the other party and each member of the consolidated group of
which the other party is a member from and against any and all federal, state
and local taxes, including any interest, penalties or additions to tax, imposed
upon or incurred by such other party, any member of its group or any stockholder
of either party as a result of the failure of the Distribution to qualify under
Section 355(a) of the Code or the application of Section 355(e).  The obligation
of the Corporation to indemnify IMS HEALTH pursuant to the preceding sentence
shall not be affected by the delivery of any legal opinion or supplemental
ruling under Section 2.10(c).

          SECTION 2.11.  TRANSFERS NOT EFFECTED PRIOR TO THE DISTRIBUTION;
TRANSFERS DEEMED EFFECTIVE AS OF THE DISTRIBUTION DATE.  To the extent that any
transfers contemplated by this Article II shall not have been consummated on or
prior to the Distribution Date, the parties shall cooperate to effect such
transfers as promptly following the Distribution Date as shall be practicable. 
Nothing herein shall be deemed to require the transfer of any Assets or the
assumption of any Liabilities which by their terms or operation of law cannot be
transferred; PROVIDED, HOWEVER, that the parties hereto and their respective
Subsidiaries shall cooperate to seek to obtain any necessary consents or
approvals for the transfer of all Assets and Liabilities contemplated to be
transferred pursuant to this Article II.  In the event that any such transfer of
Assets or Liabilities has not been consummated, from and after the Distribution
Date the party retaining such Asset or Liability shall hold such Asset in trust
for the use and benefit of the party entitled thereto (at the expense of the
party entitled thereto) or retain such Liability for the account of the party by
whom such Liability is to be assumed pursuant hereto, as the case may be, and
take such other action as may be reasonably requested by the party to whom such
Asset is to be transferred, or by whom such Liability is to be assumed, as the
case may be, in order to place such party, insofar as is reasonably possible, in
the same position as would have existed had such Asset or Liability been
transferred as contemplated hereby.  As and when any such Asset or Liability
becomes transferable, such transfer shall be effected forthwith.  The parties
agree that, as of the Distribution Date, each party hereto shall be deemed to
have acquired complete and sole beneficial ownership over all of the Assets,
together with all rights, powers and privileges incident thereto, and shall be
deemed to have assumed in accordance with the terms of this Agreement all of the
Liabilities, and all duties, obligations and responsibilities incident thereto,
which such party is entitled to acquire or required to assume pursuant to the
terms of this Agreement.

<PAGE>

                                                                             22

          SECTION 2.12.  CONVEYANCING AND ASSUMPTION INSTRUMENTS.  In 
connection with the transfers of Assets and the assumptions of Liabilities 
contemplated by this Agreement, the parties shall execute or cause to be 
executed by the appropriate entities the Conveyancing and Assumption 
Instruments in substantially the form contemplated hereby for transfers to be 
effected pursuant to New York law or the laws of one of the other states of 
the United States or, if not appropriate for a given transfer, and for 
transfers to be effected pursuant to non-U.S. laws, in such other form as the 
parties shall reasonably agree, including the transfer of real property with 
deeds as may be appropriate. The transfer of capital stock shall be effected 
by means of delivery of stock certificates and executed stock powers and 
notation on the stock record books of the corporation or other legal entities 
involved, or by such other means as may be required in any non-U.S. 
jurisdiction to transfer title to stock and, to the extent required by 
applicable law, by notation on public registries.

          SECTION 2.13.  ANCILLARY AGREEMENTS.  Prior to the Distribution Date,
each of the Corporation and IMS HEALTH shall enter into, and/or (where
applicable) shall cause members of the NMR Group or the IMS HEALTH Group, as
applicable, to enter into, the Ancillary Agreements and any other agreements in
respect of the Distribution reasonably necessary or appropriate in connection
with the transactions contemplated hereby and thereby.

          SECTION 2.14.  CORPORATE NAMES. (a)  Except as otherwise specifically
provided in any Ancillary Agreement:  

          (i)      on or prior to the Distribution Date, the Corporation shall
     change its name to remove any reference to "Cognizant" therein;

          (ii)     as soon as reasonably practicable after the Distribution
     Date but in any event within six months thereafter, the Corporation will,
     at its own expense, remove (or, if necessary, on an interim basis, cover
     up) any and all exterior signs and other identifiers located on any of its
     property or premises or on the property or premises used by it or its
     Subsidiaries (except property or premises to be shared with IMS HEALTH or
     its Subsidiaries after the Distribution) which refer or pertain to
     Cognizant or which include the Cognizant name, logo or other trademark or
     other intellectual property utilizing Cognizant;

          (iii)    as soon as reasonably practicable after the Distribution
     Date but in any event within six months thereafter, the Corporation will,
     and will cause its Subsidiaries to, remove from all letterhead, envelopes,
     invoices and other communications media of any kind, all references to
     Cognizant, including the "Cognizant" name, logo and any other trademark or
     other intellectual property utilizing Cognizant (except that the
     Corporation shall not be required to take any such action with respect to
     materials in the possession of customers), and neither the Corporation nor
     its Subsidiaries shall use or display the "Cognizant" name, logo or other
     trademarks or intellectual property utilizing Cognizant without the prior
     written consent of IMS HEALTH; 

          (iv)     as soon as reasonably practicable after the Distribution
     Date, but in any event within six months thereafter, the Corporation will
     cause its Subsidiaries to change 

<PAGE>

                                                                             23

     their corporate names to the extent necessary to remove and eliminate any
     reference to Cognizant, including the "Cognizant" name; provided, however,
     that notwithstanding the foregoing requirements of this Section 2.14(a), if
     the Corporation has exercised good faith efforts to comply with this clause
     (iv) but is unable, due to regulatory or other circumstance beyond its
     control, to effect a corporate name change in compliance with applicable
     law, then the Corporation or its Subsidiary will not be deemed to be in
     breach hereof if it continues to exercise good faith efforts to effectuate
     such name change and does effectuate such name change within nine months
     after the Distribution Date, and, in such circumstances, such party may
     continue to include in exterior signs and other identifiers and in
     letterhead, envelopes, invoices and other communications references to the
     name which includes references to Cognizant, but only to the extent
     necessary to identify such party and only until such party's corporate name
     can be changed to remove and eliminate such references; and

          (v)      notwithstanding the foregoing clauses (i) through (iv),
     nothing herein or in any Ancillary Agreement shall require the Corporation
     to take any action to remove any reference to Cognizant, including the
     "Cognizant" name, from any stock certificate relating to shares of
     Cognizant Common Stock outstanding on or prior to the Effective Time;
     provided that from and after the Effective Time, any newly issued stock
     certificates representing Cognizant Common Stock (which at the Effective
     Time will become NMR Common Stock) shall not have any reference to
     Cognizant, including the "Cognizant" name.

          (b) Except as otherwise specifically provided in any Ancillary
Agreement:

          (i)      as soon as reasonably practicable after the Distribution
     Date but in any event within six months thereafter, IMS HEALTH will, at its
     own expense, remove (or, if necessary, on an interim basis, cover up) any
     and all exterior signs and other identifiers located on any of their
     respective property or premises owned or used by them or their respective
     Subsidiaries (except property or premises to be shared with the Corporation
     or its Subsidiaries after the Distribution) which refer or pertain to NMR
     or which include the "Nielsen Media Research" or "Nielsen" name, logo or
     other trademark or other NMR intellectual property;

          (ii)     as soon as reasonably practicable after the Distribution
     Date but in any event within six months thereafter, IMS HEALTH will, and
     will cause its respective Subsidiaries to, remove from all letterhead,
     envelopes, invoices and other communications media of any kind, all
     references to NMR, including the "Nielsen Media Research" or "Nielsen"
     name, logo and any other trademark or other NMR intellectual property
     (except that IMS HEALTH shall not be required to take any such action with
     respect to materials in the possession of customers), and neither IMS
     HEALTH nor any of its Subsidiaries shall use or display the "Nielsen Media
     Research" or "Nielsen" name, logo or other trademarks or NMR intellectual
     property without the prior written consent of the Corporation; and

<PAGE>

                                                                             24

          (iii)    as soon as reasonably practicable after the Distribution
     Date but in any event within six months thereafter, IMS HEALTH will, and
     will cause its Subsidiaries to, change their corporate names to the extent
     necessary to remove and eliminate any reference to NMR, including the
     "Nielsen Media Research" or "Nielsen" name; provided, however, that
     notwithstanding the foregoing requirements of this Section 2.14(b), if IMS
     HEALTH has exercised good faith efforts to comply with this clause (iii)
     but is unable, due to regulatory or other circumstance beyond its control,
     to effect a corporate name change in compliance with applicable law, then
     IMS HEALTH or its Subsidiary will not be deemed to be in breach hereof if
     it continues to exercise good faith efforts to effectuate such name change
     and does effectuate such name change within nine months after the
     Distribution Date, and, in such circumstances, such party may continue to
     include in exterior signs and other identifiers and in letterhead,
     envelopes, invoices and other communications references to the name which
     includes references to NMR but only to the extent necessary to identify
     such party and only until such party's corporate name can be changed to
     remove and eliminate such references.


ARTICLE III.  INDEMNIFICATION

          SECTION 3.1.  INDEMNIFICATION BY THE CORPORATION.  Except as otherwise
specifically set forth in any provision of this Agreement or of any Ancillary
Agreement, the Corporation shall indemnify, defend and hold harmless the IMS
HEALTH Indemnitees from and against any and all Indemnifiable Losses of the IMS
HEALTH Indemnitees arising out of, by reason of or otherwise in connection with
the NMR Liabilities or alleged NMR Liabilities, including any breach by the
Corporation of any provision of this Agreement or any Ancillary Agreement.

          SECTION 3.2.  INDEMNIFICATION BY IMS HEALTH.  Except as otherwise
specifically set forth in any provision of this Agreement or of any Ancillary
Agreement, IMS HEALTH shall indemnify, defend and hold harmless the NMR
Indemnitees from and against any and all Indemnifiable Losses of the NMR
Indemnitees  arising out of, by reason of or otherwise in connection with the
IMS HEALTH Liabilities or alleged IMS HEALTH Liabilities, including any breach
by IMS HEALTH of any provision of this Agreement or any Ancillary Agreement.

          SECTION 3.3.  PROCEDURES FOR INDEMNIFICATION.  

          (a)  THIRD PARTY CLAIMS.  If a claim or demand is made against an NMR
Indemnitee or a IMS HEALTH Indemnitee (each, an "Indemnitee") by any person who
is not a party to this Agreement (a "Third Party Claim") as to which such
Indemnitee is entitled to indemnification pursuant to this Agreement, such
Indemnitee shall notify the party which is or may be required pursuant to
Section 3.1 or Section 3.2 hereof to make such indemnification (the
"Indemnifying Party") in writing, and in reasonable detail, of the Third Party
Claim promptly (and in any event within 15 business days) after receipt by such
Indemnitee of written notice of the Third Party Claim; PROVIDED, HOWEVER, that
failure to give such notification shall not affect the indemnification provided
hereunder except to the extent the Indemnifying Party shall have been actually
prejudiced as a result of such failure (except that the Indemnifying Party shall
not 

<PAGE>

                                                                             25

be liable for any expenses incurred during the period in which the Indemnitee
failed to give such notice).  Thereafter, the Indemnitee shall deliver to the
Indemnifying Party, promptly (and in any event within five business days) after
the Indemnitee's receipt thereof, copies of all notices and documents (including
court papers) received by the Indemnitee relating to the Third Party Claim.

          If a Third Party Claim is made against an Indemnitee, the Indemnifying
Party shall be entitled to participate in the defense thereof and, if it so
chooses and acknowledges in writing its obligation to indemnify the Indemnitee
therefor, to assume the defense thereof with counsel selected by the
Indemnifying Party; PROVIDED that such counsel is not reasonably objected to by
the Indemnitee.  Should the Indemnifying Party so elect to assume the defense of
a Third Party Claim, the Indemnifying Party shall, within 30 days (or sooner if
the nature of the Third Party Claim so requires), notify the Indemnitee of its
intent to do so, and the Indemnifying Party shall thereafter not be liable to
the Indemnitee for legal or other expenses subsequently incurred by the
Indemnitee in connection with the defense thereof; PROVIDED, that such
Indemnitee shall have the right to employ counsel to represent such Indemnitee
if, in such Indemnitee's reasonable judgment, a conflict of interest between
such Indemnitee and such Indemnifying Party exists in respect of such claim
which would make representation of both such parties by one counsel
inappropriate, and in such event the fees and expenses of such separate counsel
shall be paid by such Indemnifying Party.  If the Indemnifying Party assumes
such defense, the Indemnitee shall have the right to participate in the defense
thereof and to employ counsel, subject to the proviso of the preceding sentence,
at its own expense, separate from the counsel employed by the Indemnifying
Party, it being understood that the Indemnifying Party shall control such
defense.  The Indemnifying Party shall be liable for the fees and expenses of
counsel employed by the Indemnitee for any period during which the Indemnifying
Party has failed to assume the defense thereof (other than during the period
prior to the time the Indemnitee shall have given notice of the Third Party
Claim as provided above).  If the Indemnifying Party so elects to assume the
defense of any Third Party Claim, all of the Indemnitees shall cooperate with
the Indemnifying Party in the defense or prosecution thereof, including by
providing or causing to be provided, Records and witnesses as soon as reasonably
practicable after receiving any request therefor from or on behalf of the
Indemnifying Party.

          If the Indemnifying Party acknowledges in writing responsibility for a
Third Party Claim, then in no event will the Indemnitee admit any liability with
respect to, or settle, compromise or discharge, any Third Party Claim without
the Indemnifying Party's prior written consent; PROVIDED, HOWEVER, that the
Indemnitee shall have the right to settle, compromise or discharge such Third
Party Claim without the consent of the Indemnifying Party if the Indemnitee
releases the Indemnifying Party from its indemnification obligation hereunder
with respect to such Third Party Claim and such settlement, compromise or
discharge would not otherwise adversely affect the Indemnifying Party.  If the
Indemnifying Party acknowledges in writing liability for a Third Party Claim,
the Indemnitee will agree to any settlement, compromise or discharge of a Third
Party Claim that the Indemnifying Party may recommend and that by its terms
obligates the Indemnifying Party to pay the full amount of the liability in
connection with such Third Party Claim and releases the Indemnitee completely in
connection with such Third Party Claim and that would not otherwise adversely
affect the Indemnitee; PROVIDED, HOWEVER, that the Indemnitee may refuse to
agree to any such settlement, compromise or discharge if the Indemnitee agrees
that the Indemnifying Party's indemnification obligation with respect to such 

<PAGE>

                                                                             26

Third Party Claim shall not exceed the amount that would be required to be paid
by or on behalf of the Indemnifying Party in connection with such settlement,
compromise or discharge.  If an Indemnifying Party elects not to assume the
defense of a Third Party Claim, or fails to notify an Indemnitee of its election
to do so as provided herein, such Indemnitee may compromise, settle or defend
such Third Party Claim.

          Notwithstanding the foregoing, the Indemnifying Party shall not be
entitled to assume the defense of any Third Party Claim (and shall be liable for
the fees and expenses of counsel incurred by the Indemnitee in defending such
Third Party Claim) if the Third Party Claim seeks an order, injunction or other
equitable relief or relief for other than money damages against the Indemnitee
which the Indemnitee reasonably determines, after conferring with its counsel,
cannot be separated from any related claim for money damages.  If such equitable
relief or other relief portion of the Third Party Claim can be so separated from
that for money damages, the Indemnifying Party shall be entitled to assume the
defense of the portion relating to money damages.

          (b)    In the event of payment by an Indemnifying Party to any
Indemnitee in connection with any Third-Party Claim, such Indemnifying Party
shall be subrogated to and shall stand in the place of such Indemnitee as to any
events or circumstances in respect of which such Indemnitee may have any right
or claim relating to such Third-Party Claim against any claimant or plaintiff
asserting such Third-Party Claim.  Such Indemnitee shall cooperate with such
Indemnifying Party in a reasonable manner, and at the cost and expense of such
Indemnifying Party, in prosecuting any subrogated right or claim.

          (c)    The remedies provided in this Article III shall be cumulative
and shall not preclude assertion by any Indemnitee of any other rights or the
seeking of any and all other remedies against any Indemnifying Party.

          SECTION 3.4.  INDEMNIFICATION PAYMENTS.  Indemnification required by
this Article III shall be made by periodic payments of the amount thereof during
the course of the investigation or defense, as and when bills are received or
loss, liability, claim, damage or expense is incurred.


ARTICLE IV.  ACCESS TO INFORMATION

          SECTION 4.1.  PROVISION OF CORPORATE RECORDS.

          (a)    Other than in circumstances in which indemnification is sought
pursuant to Article III (in which event the provisions of such Article will
govern), after the Distribution Date, upon the prior written request by IMS
HEALTH for specific and identified agreements, documents, books, records or
files (collectively, "Records") which relate to (x) IMS HEALTH or the conduct of
the IMS HEALTH Business up to the Effective Time, or (y) any Ancillary Agreement
to which the Corporation and IMS HEALTH are parties, as applicable, the
Corporation shall arrange, as soon as reasonably practicable following the
receipt of such request, for the provision of appropriate copies of such Records
(or the originals thereof if the party 

<PAGE>

                                                                             27

making the request has a reasonable need for such originals) in the possession
or control of the Corporation or any of its Subsidiaries, but only to the extent
such items are not already in the possession or control of the requesting party.

          (b)    Other than in circumstances in which indemnification is sought
pursuant to Article III (in which event the provisions of such Article will
govern), after the Distribution Date, upon the prior written request by the
Corporation for specific and identified Records which relate to (x) the
Corporation, NMR or the conduct of the NMR Business up to the Effective Time, or
(y) any Ancillary Agreement to which IMS HEALTH and the Corporation are parties,
as applicable, IMS HEALTH shall arrange, as soon as reasonably practicable
following the receipt of such request, for the provision of appropriate copies
of such Records (or the originals thereof if the party making the request has a
reasonable need for such originals) in the possession or control of IMS HEALTH
or any of its Subsidiaries, but only to the extent such items are not already in
the possession or control of the requesting party.

          SECTION 4.2.  ACCESS TO INFORMATION.  Other than in circumstances in
which indemnification is sought pursuant to Article III (in which event the
provisions of such Article will govern), from and after the Distribution Date,
each of the Corporation and IMS HEALTH shall afford to the other and its
authorized accountants, counsel and other designated representatives reasonable
access during normal business hours, subject to appropriate restrictions for
classified, privileged or confidential information, to the personnel,
properties, books and records of such party and its Subsidiaries insofar as such
access is reasonably required by the other party and relates to (x) such other
party or the conduct of its business prior to the Effective Time or (y) any
Ancillary Agreement to which each of the party requesting such access and the
party requested to grant such access are parties.

          SECTION 4.3.  REIMBURSEMENT; OTHER MATTERS.  Except to the extent
otherwise contemplated by any Ancillary Agreement, a party providing Records or
access to information to the other party under this Article IV shall be entitled
to receive from the recipient, upon the presentation of invoices therefor,
payments for such amounts, relating to supplies, disbursements and other
out-of-pocket expenses, as may be reasonably incurred in providing such Records
or access to information.

          SECTION 4.4.  CONFIDENTIALITY.  Each of (i) the Corporation and its
Subsidiaries and (ii) IMS HEALTH and its Subsidiaries shall not use or permit
the use of (without the prior written consent of the other) and shall keep, and
shall cause its consultants and advisors to keep, confidential all information
concerning the other parties in its possession, its custody or under its control
(except to the extent that (A) such information has been in the public domain
through no fault of such party or (B) such information has been later lawfully
acquired from other sources by such party or (C) this Agreement or any other
Ancillary Agreement or any other agreement entered into pursuant hereto permits
the use or disclosure of such information) to the extent such information (w)
relates to or was acquired during the period up to the Effective Time, (x)
relates to any Ancillary Agreement, (y) is obtained in the course of performing
services for the other party pursuant to any Ancillary Agreement, or (z) is
based upon or is derived from information described in the preceding clauses
(w), (x) or (y), and each party shall not (without the prior written consent of
the other) otherwise release or disclose such information to any other person, 

<PAGE>

                                                                             28

except such party's auditors and attorneys, unless compelled to disclose such
information by judicial or administrative process or unless such disclosure is
required by law and such party has used commercially reasonable efforts to
consult with the other affected party or parties prior to such disclosure.  

          SECTION 4.5.  PRIVILEGED MATTERS.  The parties hereto recognize that
legal and other professional services that have been and will be provided prior
to the Distribution Date have been and will be rendered for the benefit of each
of the Corporation, the members of the NMR Group and the members of the IMS
HEALTH Group, and that each of the Corporation, the members of the NMR Group and
the members of the IMS HEALTH Group should be deemed to be the client for the
purposes of asserting all privileges which may be asserted under applicable law.
To allocate the interests of each party in the information as to which any party
is entitled to assert a privilege, the parties agree as follows:

          (a) The Corporation shall be entitled, in perpetuity, to control the
assertion or waiver of all privileges in connection with privileged information
which relates solely to the NMR Business, whether or not the privileged
information is in the possession of or under the control of the Corporation or
IMS HEALTH.  The Corporation shall also be entitled, in perpetuity, to control
the assertion or waiver of all privileges in connection with privileged
information that relates solely to the subject matter of any claims constituting
NMR Liabilities, now pending or which may be asserted in the future, in any
lawsuits or other proceedings initiated against or by the Corporation, whether
or not the privileged information is in the possession of or under the control
of the Corporation or IMS HEALTH.

          (b) IMS HEALTH shall be entitled, in perpetuity, to control the
assertion or waiver of all privileges in connection with privileged information
which relates solely to the IMS HEALTH Business, whether or not the privileged
information is in the possession of or under the control of the Corporation or
IMS HEALTH.  IMS HEALTH shall also be entitled, in perpetuity, to control the
assertion or waiver of all privileges in connection with privileged information
which relates solely to the subject matter of any claims constituting IMS HEALTH
Liabilities, now pending or which may be asserted in the future, in any lawsuits
or other proceedings initiated against or by IMS HEALTH whether or not the
privileged information is in the possession of or under the control of the
Corporation or IMS HEALTH. 

          (c) The parties hereto agree that they shall have a shared privilege,
with equal right to assert or waive, subject to the restrictions in this Section
4.5, with respect to all privileges not allocated pursuant to the terms of
Sections 4.5(a) and (b).  All privileges relating to any claims, proceedings,
litigation, disputes, or other matters which involve both the Corporation and
IMS HEALTH in respect of which both parties retain any responsibility or
liability under this Agreement, shall be subject to a shared privilege among
them.

          (d) No party hereto may waive any privilege which could be asserted
under any applicable law, and in which any other party hereto has a shared
privilege, without the consent of the other party, except to the extent
reasonably required in connection with any litigation with third-parties or as
provided in subsection (e) below.  Consent shall be in writing, or shall be 


<PAGE>

                                                                             29

deemed to be granted unless written objection is made within twenty (20) days
after notice upon the other party requesting such consent.

          (e) In the event of any litigation or dispute between or among any of
the parties hereto, any party and a Subsidiary of another party hereto, or a
Subsidiary of one party hereto and a Subsidiary of another party hereto, either
such party may waive a privilege in which the other party has a shared
privilege, without obtaining the consent of the other party, provided that such
waiver of a shared privilege shall be effective only as to the use of
information with respect to the litigation or dispute between the parties and/or
their Subsidiaries, and shall not operate as a waiver of the shared privilege
with respect to third parties.

          (f) If a dispute arises between or among the parties hereto or their
respective Subsidiaries regarding whether a privilege should be waived to
protect or advance the interest of any party, each party agrees that it shall
negotiate in good faith, shall endeavor to minimize any prejudice to the rights
of the other parties, and shall not unreasonably withhold consent to any request
for waiver by another party.  Each party hereto specifically agrees that it will
not withhold consent to waiver for any purpose except to protect its own
legitimate interests.

          (g) Upon receipt by any party hereto or by any Subsidiary thereof of
any subpoena, discovery or other request which arguably calls for the production
or disclosure of information subject to a shared privilege or as to which
another party has the sole right hereunder to assert a privilege, or if any
party obtains knowledge that any of its or any of its Subsidiaries' current or
former directors, officers, agents or employees have received any subpoena,
discovery or other requests which arguably calls for the production or
disclosure of such privileged information, such party shall promptly notify the
other party or parties of the existence of the request and shall provide the
other party or parties a reasonable opportunity to review the information and to
assert any rights it or they may have under this Section 4.5 or otherwise to
prevent the production or disclosure of such privileged information.

          (h) The transfer of all Records and other information pursuant to this
Agreement is made in reliance on the agreement of the Corporation and IMS
HEALTH, as set forth in Sections 4.4 and 4.5, to maintain the confidentiality of
privileged information and to assert and maintain all applicable privileges. 
The access to information being granted pursuant to Sections 4.1 and 4.2 hereof,
the agreement to provide witnesses and individuals pursuant to Sections 2.9 and
3.3 hereof, the furnishing of notices and documents and other cooperative
efforts contemplated by Section 3.3 hereof, and the transfer of privileged
information between and among the parties and their respective Subsidiaries
pursuant to this Agreement shall not be deemed a waiver of any privilege that
has been or may be asserted under this Agreement or otherwise.

          SECTION 4.6.  OWNERSHIP OF INFORMATION.  Any information owned by one
party or any of its Subsidiaries that is provided to a requesting party pursuant
to Article III or this Article IV shall be deemed to remain the property of the
providing party.  Unless specifically set forth herein, nothing contained in
this Agreement shall be construed as granting or conferring rights of license or
otherwise in any such information.

<PAGE>

                                                                             30

          SECTION 4.7.  LIMITATION OF LIABILITY.  (a)  No party shall have any
liability to any other party in the event that any information exchanged or
provided pursuant to this Agreement which is an estimate or forecast, or which
is based on an estimate or forecast, is found to be inaccurate.

          (b)  Other than in connection with Section 2.2, no party or any
Subsidiary thereof shall have any liability or claim against any other party or
any Subsidiary of any other party based upon, arising out of or resulting from
any agreement, arrangement, course of dealing or understanding existing on or
prior to the Distribution Date (other than this Agreement or any Ancillary
Agreement or any agreement entered into in connection herewith or in order to
consummate the transactions contemplated hereby or thereby), unless such
agreement, arrangement, course of dealing or understanding is listed on Schedule
4.7(b) hereto, and any such liability or claim, whether or not in writing, which
is not reflected on such Schedule, is hereby irrevocably cancelled, released and
waived.

          SECTION 4.8.  OTHER AGREEMENTS PROVIDING FOR EXCHANGE OF INFORMATION. 
The rights and obligations granted under this Article IV are subject to any
specific limitations, qualifications or additional provisions on the sharing,
exchange or confidential treatment of information set forth in any Ancillary
Agreement.


ARTICLE V.  ADMINISTRATIVE SERVICES

          SECTION 5.1.  PERFORMANCE OF SERVICES.  Beginning on the Distribution
Date, each party will provide, or cause one or more of its Subsidiaries to
provide, to the other party and its Subsidiaries such services on such terms as
may be set forth in the Transition Services Agreement.  Except as otherwise set
forth in the Transition Services Agreement or any Schedule thereto, the party
that is to provide the services (the "Provider") will use (and will cause its
Subsidiaries to use) commercially reasonable efforts to provide such services to
the other party (the "Recipient") and its Subsidiaries in a satisfactory and
timely manner and as further specified in such Transition Services Agreement.

          SECTION 5.2.  INDEPENDENCE.  Unless otherwise agreed in writing, all
employees and representatives of the Provider providing the scheduled services
to the Recipient will be deemed for purposes of all compensation and employee
benefits matters to be employees or representatives of the Provider and not
employees or representatives of the Recipient.  In performing such services,
such employees and representatives will be under the direction, control and
supervision of the Provider (and not the Recipient) and the Provider will have
the sole right to exercise all authority with respect to the employment
(including, without limitation, termination of employment), assignment and
compensation of such employees and representatives.

          SECTION 5.3.  NON-EXCLUSIVITY.  Nothing in this Agreement precludes
any party from obtaining, in whole or in part, services of any nature that may
be obtainable from the other party from its own employees or from providers
other than the other party.

<PAGE>

                                                                             31

ARTICLE VI.  DISPUTE RESOLUTION

          SECTION 6.1.  NEGOTIATION.  In the event of a controversy, dispute or
claim arising out of, in connection with, or in relation to the interpretation,
performance, nonperformance, validity or breach of this Agreement or otherwise
arising out of, or in any way related to this Agreement or the transactions
contemplated hereby, including, without limitation, any claim based on contract,
tort, statute or constitution (but excluding any controversy, dispute or claim
arising out of any agreement relating to the use or lease of real property if
any third party is a party to such controversy, dispute or claim) (collectively,
"Agreement Disputes"), the general counsels of the parties shall negotiate in
good faith for a reasonable period of time to settle such Agreement Dispute,
PROVIDED such reasonable period shall not, unless otherwise agreed by the
parties in writing, exceed 30 days from the time the parties began such
negotiations; PROVIDED FURTHER that in the event of any arbitration in
accordance with Section 6.2 hereof, the parties shall not assert the defenses of
statute of limitations and laches arising for the period beginning after the
date the parties began negotiations hereunder, and any contractual time period
or deadline under this Agreement or any Ancillary Agreement to which such
Agreement Dispute relates shall not be deemed to have passed until such
Agreement Dispute has been resolved.

          SECTION 6.2.  ARBITRATION.  If after such reasonable period such
general counsels are unable to settle such Agreement Dispute (and in any event,
unless otherwise agreed in writing by the parties, after 60 days have elapsed
from the time the parties began such negotiations), such Agreement Dispute shall
be determined, at the request of any party, by arbitration conducted in New York
City, before and in accordance with the then-existing International Arbitration
Rules of the American Arbitration Association (the "Rules").  In any dispute
between the parties hereto, the number of arbitrators shall be one.  Any
judgment or award rendered by the arbitrator shall be final, binding and
nonappealable (except upon grounds specified in 9 U.S.C. Section 10(a) as in
effect on the date hereof).  If the parties are unable to agree on the
arbitrator, the arbitrator shall be selected in accordance with the Rules;
provided that the arbitrator shall be a U.S. national.  Any controversy
concerning whether an Agreement Dispute is an arbitrable Agreement Dispute,
whether arbitration has been waived, whether an assignee of this Agreement is
bound to arbitrate, or as to the interpretation of enforceability of this
Article VI shall be determined by the arbitrator.  In resolving any dispute, the
parties intend that the arbitrator apply the substantive laws of the State of
New York, without regard to the choice of law principles thereof.  The parties
intend that the provisions to arbitrate set forth herein be valid, enforceable
and irrevocable.  The parties agree to comply with any award made in any such
arbitration proceeding that has become final in accordance with the Rules and
agree to enforcement of or entry of judgment upon such award, by any court of
competent jurisdiction, including (a) the Supreme Court of the State of New
York, New York County, or (b) the United States District Court for the Southern
District of New York, in accordance with Section 8.17 hereof.  The arbitrator
shall be entitled, if appropriate, to award any remedy in such proceedings,
including, without limitation, monetary damages, specific performance and all
other forms of legal and equitable relief; PROVIDED, HOWEVER, the arbitrator
shall not be entitled to award punitive damages. Without limiting the provisions
of the Rules, unless otherwise agreed in writing by or among the parties or
permitted by this Agreement, the parties shall keep confidential all matters
relating to the arbitration or the award, PROVIDED such matters may be disclosed
(i) to the extent reasonably 

<PAGE>

                                                                             32

necessary in any proceeding brought to enforce the award or for entry of a
judgment upon the award and (ii) to the extent otherwise required by law. 
Notwithstanding Article 32 of the Rules, the party other than the prevailing
party in the arbitration shall be responsible for all of the costs of the
arbitration, including legal fees and other costs specified by such Article 32. 
Nothing contained herein is intended to or shall be construed to prevent any
party, in accordance with Article 22(3) of the Rules or otherwise, from applying
to any court of competent jurisdiction for interim measures or other provisional
relief in connection with the subject matter of any Agreement Disputes.

          SECTION 6.3.  CONTINUITY OF SERVICE AND PERFORMANCE.   Unless
otherwise agreed in writing, the parties will continue to provide service and
honor all other commitments under this Agreement and each Ancillary Agreement
during the course of dispute resolution pursuant to the provisions of this
Article VI with respect to all matters not subject to such dispute, controversy
or claim.


ARTICLE VII.  INSURANCE

          SECTION 7.1.  POLICIES AND RIGHTS INCLUDED WITHIN ASSETS; ASSIGNMENT
OF POLICIES. (a)  POLICY RIGHTS. The IMS HEALTH Assets shall include (i) any and
all rights of an insured party under each of the Shared Policies, subject to the
terms of such Shared Policies and any limitations or obligations of IMS HEALTH
contemplated by this Article VII, specifically including rights of indemnity and
the right to be defended by or at the expense of the insurer, with respect to
all claims, suits, actions, proceedings, injuries, losses, liabilities, damages
and expenses incurred or claimed to have been incurred prior to the Distribution
Date by any party in or in connection with the conduct of the IMS HEALTH
Business or, to the extent any claim is made against IMS HEALTH or any of its
Subsidiaries, the conduct of the NMR Business, and which claims, suits, actions,
proceedings, injuries, losses, liabilities, damages and expenses may arise out
of an insured or insurable occurrence under one or more of such Shared Policies.

          (b)  ASSIGNMENT OF SHARED POLICIES.  Subject to the terms and
conditions hereof, the Corporation hereby assigns, transfers and conveys to IMS
HEALTH all of the Corporation's right, title and interest in and to any and all
of the Shared Policies, including, without limitation, the right of indemnity,
the right to be defended by or at the expense of the insurer and the right to
any applicable Insurance Proceeds thereunder; and the Corporation and IMS HEALTH
shall use their commercially reasonable efforts to obtain any required consents
of insurers to the assignment contemplated by this paragraph.

          SECTION 7.2.  POST-DISTRIBUTION DATE CLAIMS.  If, subsequent to the
Distribution Date, any person shall assert a claim against IMS HEALTH or any of
its Subsidiaries (including, without limitation, where IMS HEALTH or its
Subsidiaries are joint defendants with other persons) with respect to any claim,
suit, action, proceeding, injury, loss, liability, damage or expense incurred or
claimed to have been incurred prior to the Distribution Date in or in connection
with the conduct of the IMS HEALTH Business or, to the extent any claim is made
against IMS HEALTH or any of its Subsidiaries (including, without limitation,
where IMS HEALTH or its Subsidiaries are joint defendants with other persons),
in connection with the 

<PAGE>

                                                                             33

conduct of the NMR Business, and which claim, suit, action, proceeding, injury,
loss, liability, damage or expense may arise out of an insured or insurable
occurrence under one or more of the Shared Policies, the Corporation shall, at
the time such claim is asserted, to the extent any such Policy may require that
Insurance Proceeds thereunder be collected directly by the named insured or
anyone other than the party against whom the Insured Claim is asserted, be
deemed to designate, without need of further documentation, IMS HEALTH as the
agent and attorney-in-fact to assert and to collect any related Insurance
Proceeds under such Shared Policy.

          SECTION 7.3.  ADMINISTRATION; OTHER MATTERS.  (a)  ADMINISTRATION. 
From and after the Distribution Date, IMS HEALTH shall be responsible for (i)
Insurance Administration of the Shared Policies and (ii) Claims Administration
under such Shared Policies with respect to NMR Liabilities and IMS HEALTH
Liabilities; PROVIDED that the assumption of such responsibilities by IMS HEALTH
is in no way intended to limit, inhibit or preclude any right to insurance
coverage for any Insured Claim of a named insured under such Policies as
contemplated by the terms of this Agreement; PROVIDED FURTHER that IMS HEALTH's
assumption of the administrative responsibilities for the Shared Policies shall
not relieve the party submitting any Insured Claim of the primary responsibility
for reporting such Insured Claim accurately, completely and in a timely manner
or of such party's authority to settle any such Insured Claim within any period
permitted or required by the relevant Policy; and PROVIDED FURTHER that all
direct or indirect communication with insurers relating to the Shared Policies
shall be conducted by IMS HEALTH.  IMS HEALTH may discharge its administrative
responsibilities under this Section 7.3 by contracting for the provision of
services by independent parties.  Each of the parties hereto shall administer
and pay any costs relating to defending its respective Insured Claims under
Shared Policies to the extent such defense costs are not covered under such
Policies and shall be responsible for obtaining or reviewing the appropriateness
of releases upon settlement of its respective Insured Claims under Shared
Policies.  The disbursements, out-of-pocket expenses and direct and indirect
costs of employees or agents of IMS HEALTH relating to Claims Administration and
Insurance Administration contemplated by this Section 7.3(a) shall be treated in
accordance with the terms of the Transition Services Agreement, if still in
effect with respect to insurance and risk management, or, if the Transition
Services Agreement shall no longer be in effect with respect to insurance and
risk management, then each of the Corporation and IMS HEALTH shall be
responsible for its own Claims Administration and Insurance Administration.

          (b)EXCEEDING POLICY LIMITS.  Except as set forth in this Section
7.3(b), the Corporation and IMS HEALTH shall not be liable to one another for
claims not reimbursed by insurers for any reason not within the control of the
Corporation or IMS HEALTH, as the case may be, including, without limitation,
coinsurance provisions, deductibles, quota share deductibles, self-insured
retentions, bankruptcy or insolvency of an insurance carrier, Shared Policy
limitations or restrictions, any coverage disputes, any failure to timely claim
by the Corporation or IMS HEALTH or any defect in such claim or its processing,
PROVIDED that IMS HEALTH shall be responsible for the amount of the difference,
if any, between the deductible set forth in any Shared Policy and the deductible
allocable to the Corporation as set forth in Schedule 7.3(b) hereto.

<PAGE>

                                                                             34

          (c)    ALLOCATION OF INSURANCE PROCEEDS.  Insurance Proceeds received
with respect to claims, costs and expenses under the Shared Policies shall be
paid to IMS HEALTH, which shall thereafter administer the Shared Policies by
paying the Insurance Proceeds, as appropriate, to the Corporation with respect
to NMR Liabilities and to IMS HEALTH with respect to IMS HEALTH Liabilities. 
Payment of the allocable portions of indemnity costs of Insurance Proceeds
resulting from such Policies will be made by IMS HEALTH to the appropriate party
upon receipt from the insurance carrier.  In the event that the aggregate limits
on any Shared Policies are exceeded by the aggregate of outstanding Insured
Claims by both of the parties hereto, the parties agree to allocate the
Insurance Proceeds received thereunder based upon their respective percentage of
the total of their bona fide claims which were covered under such Shared Policy
(their "allocable portion of Insurance Proceeds"), and any party who has
received Insurance Proceeds in excess of such party's allocable portion of
Insurance Proceeds shall pay to the other party the appropriate amount so that
each party will have received its allocable portion of Insurance Proceeds
pursuant hereto.  Each of the parties agrees to use commercially reasonable
efforts to maximize available coverage under those Shared Policies applicable to
it, and to take all commercially reasonable steps to recover from all other
responsible parties in respect of an Insured Claim to the extent coverage limits
under a Shared Policy have been exceeded or would be exceeded as a result of
such Insured Claim.

          (d)    ALLOCATION OF DEDUCTIBLES.  In the event that both parties
have bona fide claims under any Shared Policy for which a deductible is payable,
the parties agree that the aggregate amount of the deductible paid shall be
borne by the parties in the same proportion which the Insurance Proceeds
received by each such party bears to the total Insurance Proceeds received under
the applicable Shared Policy (their "allocable share of the deductible"), and
any party who has paid more than such share of the deductible shall be entitled
to receive from the other party an appropriate amount so that each party has
borne its allocable share of the deductible pursuant hereto.  For purposes of
this paragraph 7.3(d), the amount of the relevant deductible under any Shared
Policy shall be that set forth in Schedule 7.3(b) hereto.

          (e) Effective as of the Distribution Date, each of IMS HEALTH and the
Corporation shall be responsible for its applicable deductible for workers'
compensation, general liability and automobile liability claims as set forth in
Schedule 7.3(e).

          SECTION 7.4.  AGREEMENT FOR WAIVER OF CONFLICT AND SHARED DEFENSE.  In
the event that Insured Claims of both of the parties hereto exist relating to
the same occurrence, the parties shall jointly defend and waive any conflict of
interest necessary to the conduct of the joint defense.  Nothing in this Article
VII shall be construed to limit or otherwise alter in any way the obligations of
the parties to this Agreement, including those created by this Agreement, by
operation of law or otherwise.

          SECTION 7.5.  COOPERATION.  The parties agree to use their
commercially reasonable efforts to cooperate with respect to the various
insurance matters contemplated by this Agreement.

<PAGE>

                                                                             35

ARTICLE VIII.  MISCELLANEOUS

          SECTION 8.1.  COMPLETE AGREEMENT; CONSTRUCTION.  This Agreement,
including the Exhibits and Schedules, and the Ancillary Agreements shall
constitute the entire agreement between the parties with respect to the subject
matter hereof and shall supersede all previous negotiations, commitments and
writings with respect to such subject matter.  In the event of any inconsistency
between this Agreement and any Schedule hereto, the Schedule shall prevail. 
Other than Section 2.1(j), Section 2.7, Section 4.5 and Article VI, which shall
prevail over any inconsistent or conflicting provisions in any Ancillary
Agreement, notwithstanding any other provisions in this Agreement to the
contrary, in the event and to the extent that there shall be a conflict between
the provisions of this Agreement and the provisions of any Ancillary Agreement,
such Ancillary Agreement shall control.

          SECTION 8.2.  ANCILLARY AGREEMENTS.  Subject to the last sentence of
Section 8.1, this Agreement is not intended to address, and should not be
interpreted to address, the matters specifically and expressly covered by the
Ancillary Agreements.  

          SECTION 8.3.  COUNTERPARTS.  This Agreement may be executed in one or
more counterparts, all of which shall be considered one and the same agreement,
and shall become effective when one or more such counterparts have been signed
by each of the parties and delivered to the other parties.

          SECTION 8.4.  SURVIVAL OF AGREEMENTS.  Except as otherwise
contemplated by this Agreement, all covenants and agreements of the parties
contained in this Agreement shall survive the Distribution Date.

          SECTION 8.5.  EXPENSES.  Except as set forth on Schedule 8.5 or as
otherwise set forth in this Agreement or any Ancillary Agreement, all costs and
expenses incurred on or prior to the Distribution Date (whether or not paid on
or prior to the Distribution Date) in connection with the preparation,
execution, delivery and required implementation of this Agreement and any
Ancillary Agreement, the Information Statement (including any registration
statement on Form 10 of which such Information Statement may be a part) and the
Distribution and the consummation of the transactions contemplated thereby shall
be charged to and paid by the Corporation.  Except as set forth on Schedule 8.5
or as otherwise set forth in this Agreement or any Ancillary Agreement, all
costs and expenses incurred after the Distribution Date in connection with the
required implementation of this Agreement or any Ancillary Agreement, the
consummation of the Distribution or the consummation of the transactions
contemplated by this Agreement or any Ancillary Agreement shall be borne by
________.  Except as set forth on Schedule 8.5 or as otherwise set forth in this
Agreement or any Ancillary Agreement, each party shall bear its own costs and
expenses incurred after the Distribution Date.  Any amount or expense to be paid
or reimbursed by any party hereto to any other party hereto shall be so paid or
reimbursed promptly after the existence and amount of such obligation is
determined and demand therefor is made.

          SECTION 8.6.  NOTICES.  All notices and other communications hereunder
shall be in writing and hand delivered or mailed by registered or certified mail
(return receipt 

<PAGE>

                                                                             36

requested) or sent by any means of electronic message transmission with delivery
confirmed (by voice or otherwise) to the parties at the following addresses (or
at such other addresses for a party as shall be specified by like notice) and
will be deemed given on the date on which such notice is received:

          To the Corporation:

          Nielsen Media Research, Inc.
          299 Park Avenue
          New York, NY 10171
          Telecopy:
          Attn: Chief Legal Officer 


          To IMS HEALTH:

          IMS HEALTH Incorporated
          200 Nyala Farms 
          Westport, CT 06880
          Telecopy:  (203) 222-4313
          Attn:  General Counsel


          SECTION 8.7.  WAIVERS.  The failure of any party to require strict
performance by any other party of any provision in this Agreement will not waive
or diminish that party's right to demand strict performance thereafter of that
or any other provision hereof.

          SECTION 8.8.  AMENDMENTS.  Subject to the terms of Section 8.11
hereof, this Agreement may not be modified or amended except by an agreement in
writing signed by each of the parties hereto.

          SECTION 8.9.  ASSIGNMENT. (a)  This Agreement shall not be assignable,
in whole or in part, directly or indirectly, by any party hereto without the
prior written consent of the other parties hereto, and any attempt to assign any
rights or obligations arising under this Agreement without such consent shall be
void.

          (b) The Corporation will not distribute to its stockholders any
interest in any NMR Business Entity, by way of a spin-off distribution,
split-off or exchange of interests in a NMR Business Entity for any interest in
the Corporation held by NMR stockholders, or any similar transaction or
transactions, unless the distributed NMR Business Entity undertakes to IMS
HEALTH to be jointly and severally liable for all NMR Liabilities hereunder.

          (c) IMS HEALTH will not distribute to its stockholders any interest in
any IMS HEALTH Business Entity, by way of a spin-off distribution, split-off or
exchange of interests in a IMS HEALTH Business Entity for any interest in IMS
HEALTH held by IMS HEALTH stockholders, or any similar transaction or
transactions, unless the distributed IMS HEALTH 

<PAGE>

                                                                             37


Business Entity undertakes to the Corporation to be jointly and severally liable
for all IMS HEALTH Liabilities hereunder.

          SECTION 8.10.  SUCCESSORS AND ASSIGNS.  The provisions to this
Agreement shall be binding upon, inure to the benefit of and be enforceable by
the parties and their respective successors and permitted assigns.  

          SECTION 8.11.  TERMINATION.  This Agreement (including, without
limitation, Article III hereof) may be terminated and the Distribution may be
amended, modified or abandoned at any time prior to the Distribution by and in
the sole discretion of the Corporation without the approval of IMS HEALTH or the
shareholders of the Corporation.  In the event of such termination, no party
shall have any liability of any kind to any other party or any other person. 
After the Distribution, this Agreement may not be terminated except by an
agreement in writing signed by the parties; PROVIDED, HOWEVER, that Article III
shall not be terminated or amended after the Distribution in respect of the
third party beneficiaries thereto without the consent of such persons.

          SECTION 8.12.  SUBSIDIARIES.  Each of the parties hereto shall cause
to be performed, and hereby guarantees the performance of, all actions,
agreements and obligations set forth herein to be performed by any Subsidiary of
such party or by any entity that is contemplated to be a Subsidiary of such
party on and after the Distribution Date.

          SECTION 8.13.  THIRD PARTY BENEFICIARIES.  Except as provided in
Article III relating to Indemnitees, this Agreement is solely for the benefit of
the parties hereto and their respective Subsidiaries and Affiliates and should
not be deemed to confer upon third parties any remedy, claim, liability,
reimbursement, claim of action or other right in excess of those existing
without reference to this Agreement.

          SECTION 8.14.  TITLE AND HEADINGS.  Titles and headings to sections
herein are inserted for the convenience of reference only and are not intended
to be a part of or to affect the meaning or interpretation of this Agreement.

          SECTION 8.15.  EXHIBITS AND SCHEDULES.  The Exhibits and Schedules
shall be construed with and as an integral part of this Agreement to the same
extent as if the same had been set forth verbatim herein.

          SECTION 8.16.  GOVERNING LAW.  THIS AGREEMENT SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK APPLICABLE TO
CONTRACTS MADE AND TO BE PERFORMED IN THE STATE OF NEW YORK.

          SECTION 8.17.  CONSENT TO JURISDICTION.  Without limiting the
provisions of Article VI hereof, each of the parties irrevocably submits to the
exclusive jurisdiction of (a) the Supreme Court of the State of New York, New
York County, and (b) the United States District Court for the Southern District
of New York, for the purposes of any suit, action or other proceeding arising
out of this Agreement or any transaction contemplated hereby.  Each of the 

<PAGE>

                                                                             38

parties agrees to commence any action, suit or proceeding relating hereto either
in the United States District Court for the Southern District of New York or if
such suit, action or other proceeding may not be brought in such court for
jurisdictional reasons, in the Supreme Court of the State of New York, New York
County.  Each of the parties further agrees that service of any process,
summons, notice or document by U.S. registered mail to such party's respective
address set forth above shall be effective service of process for any action,
suit or proceeding in New York with respect to any matters to which it has
submitted to jurisdiction in this Section 8.17.  Each of the parties irrevocably
and unconditionally waives any objection to the laying of venue of any action,
suit or proceeding arising out of this Agreement or the transactions
contemplated hereby in (i) the Supreme Court of the State of New York, New York
County, or (ii) the United States District Court for the Southern District of
New York, and hereby further irrevocably and unconditionally waives and agrees
not to plead or claim in any such court that any such action, suit or proceeding
brought in any such court has been brought in an inconvenient forum.

          SECTION 8.18.  SEVERABILITY.  In the event any one or more of the
provisions contained in this Agreement should be held invalid, illegal or
unenforceable in any respect, the validity, legality and enforceability of the
remaining provisions contained herein and therein shall not in any way be
affected or impaired thereby.  The parties shall endeavor in good-faith
negotiations to replace the invalid, illegal or unenforceable provisions with
valid provisions, the economic effect of which comes as close as possible to
that of the invalid, illegal or unenforceable provisions.

<PAGE>

                                                                             39

          IN WITNESS WHEREOF, the parties have caused this Agreement to be duly
executed as of the day and year first above written.

                              COGNIZANT CORPORATION
                              
                              
                                   By:  _____________________________
                                        Name:
                                        Title:
                              
                              
                              
                              IMS HEALTH INCORPORATED 
                              
                              
                                   By:  _____________________________
                                        Name:
                                        Title:
                              
                              



<PAGE>



                                                                    Exhibit 10.3


                             EMPLOYEE BENEFITS AGREEMENT


          This EMPLOYEE BENEFITS AGREEMENT is dated as of June __, 1998 (the
"AGREEMENT"), between COGNIZANT CORPORATION, a Delaware corporation
("CORPORATION") and IMS HEALTH INCORPORATED, a Delaware corporation ("IMS
HEALTH").

          WHEREAS, the Board of Directors of Corporation has determined that it
is appropriate, desirable and in the best interests of the holders of shares of
common stock, par value $.01 per share, of Corporation (the "CORPORATION COMMON
STOCK") to take certain steps to reorganize Corporation's Subsidiaries (as
defined herein) and businesses and then to distribute to the holders of the
Corporation Common Stock all the outstanding shares of common stock of IMS
Health (the "IMS HEALTH COMMON SHARES");

          WHEREAS, The Corporation has previously entered into an Employee
Benefits Agreement with D&B and ACNielsen in connection with the distribution
dated as of October 28, 1996 and IMS Health shall succeed the Corporation under
such agreement; and

          WHEREAS, Corporation and IMS Health have determined that it is
necessary and desirable to allocate and assign responsibility for certain
employee benefit matters in respect of such entities on and after the Effective
Time (as defined herein).


          NOW, THEREFORE, in consideration of the mutual promises and covenants
contained herein, Corporation and IMS Health agree as follows:

                                      ARTICLE I
                                     DEFINITIONS

          SECTION 1.1.  DEFINITIONS.  Capitalized terms used in this Agreement
shall have the following meanings:

          "ACNIELSEN" shall mean ACNielsen Corporation, a Delaware corporation.

          "ACTION" shall mean any action, suit, arbitration, inquiry, proceeding
or investigation by or before any court, any governmental or other regulatory or
administrative agency, body or commission or any arbitration tribunal.

          "AFFILIATE" shall mean, when used with respect to a specified person,
another person that controls, is controlled by, or is under common control with
the person specified.  As used herein, "control" means the possession, directly
or indirectly, of the power to direct or cause the direction of the management
and policies of such person, whether through the ownership of voting securities
or other interests, by contract or otherwise.

<PAGE>

                                                                               2

          "ANCILLARY AGREEMENTS" shall mean all of the written agreements,
instruments, assignments or other written arrangements (other than this
Agreement and the Distribution Agreement) entered into in connection with the
transactions contemplated by this Agreement and the Distribution Agreement,
including, without limitation, the Conveyancing and Assumption Instruments, the
Data Services Agreements, the Intellectual Property Agreement, the Shared
Transaction Services Agreements, the Tax Allocation Agreement and the Transition
Services Agreement.

          "ASSETS" shall have the meaning set forth in Section 1.1(f) of the
Distribution Agreement.

          "BOARD OF DIRECTORS" shall mean, when used with respect to a specified
corporation, the board of directors of the corporation so specified.

          "BUSINESS ENTITY" shall mean any corporation, partnership, limited
liability company or other entity which may legally hold title to Assets.

          "COBRA" shall mean the Consolidated Omnibus Budget Reconciliation Act
of 1985, as amended, and the regulations promulgated thereunder, including any
successor legislation.

          "CODE" shall mean the Internal Revenue Code of 1986, as amended, and
the regulations promulgated thereunder, including any successor legislation.
          

          "CONVEYANCING AND ASSUMPTION INSTRUMENTS" shall mean, collectively,
the various agreements, instruments and other documents heretofore entered into
and to be entered into to effect the transfer of Assets and the assumption of
Liabilities in the manner contemplated by the Distribution Agreement, or
otherwise arising out of or relating to the transactions contemplated in the
Distribution Agreement.

          "COGNIZANT" shall mean Cognizant Corporation, a Delaware corporation.

          "CORPORATE STAFF EMPLOYEES" shall mean Corporation Pre-Distribution
Employees who performed administrative functions for both the Corporation Group
and IMS Health Group prior to the Effective Time.

          "CORPORATION" shall mean Cognizant Corporation, a Delaware
corporation.

          "CORPORATION COMMITTEE" shall mean the Compensation and Benefits
Committee of the Board of Directors of Corporation.

          "CORPORATION COMMON STOCK" shall have the meaning set forth in the
recitals hereto.

<PAGE>

                                                                              3

          "CORPORATION DISABLED EMPLOYEES" shall mean all employees of the
Corporation Group who are receiving benefits under the Corporation Long-Term
Disability Plan as of the Effective Time, as in effect from time to time.

          "CORPORATION EMPLOYEE STOCK PURCHASE PLAN" shall mean the 1997
Cognizant Corporation Employee Stock Purchase Plan, as in effect from time to
time.

          "CORPORATION EXECUTIVE ANNUAL INCENTIVE PLAN" shall mean the Cognizant
Corporation Executive Annual Incentive Plan, as in effect from time to time.

          "CORPORATION GROUP" shall mean Cognizant Corporation and each Business
Entity that is a Subsidiary of Corporation.

          "CORPORATION LONG-TERM DISABILITY PLAN" shall mean The Cognizant Long
Term Disability Plan or any other long-term disability plan sponsored by
Corporation or any Subsidiary of Corporation prior to the Effective Time.

          "CORPORATION LSARS" shall have the meaning set forth in Section 6.2 of
this Agreement.


          "CORPORATION NONQUALIFIED PLANS" shall have the meaning as set forth
in Section 4.1 of this Agreement.

          "CORPORATION PENSION REP" shall mean the Cognizant Retirement Excess
Plan, as in effect from time to time.

          "CORPORATION POST-DISTRIBUTION EMPLOYEES" shall mean persons who,
immediately after the Effective Time, are employed by the Corporation Group
(including persons who are absent from work by reason of layoff or leave of
absence and inactive employees treated as such by agreement therewith).

          "CORPORATION PRE-DISTRIBUTION EMPLOYEES" shall mean persons who, at
any time prior to the Effective Time, were employed by the Corporation Group.

          "CORPORATION RATIO" shall have the meaning set forth in Section 6.1(a)
of this Agreement.

          "CORPORATION RESTRICTED STOCK"  shall have the meaning set forth in
Section 6.3 of this Agreement.

          "CORPORATION RETIREES" shall mean persons who (i) were Corporation
Pre-Distribution Employees, (ii) terminated employment from the Corporation
Group prior to the Effective Time, (iii) are not IMS Health Employees after the
Effective Time and (iv) would have been Corporation Post-Distribution Employees
had they remained employed, after the Distribution, by the same employer from
which they terminated employment.

<PAGE>

                                                                              4

          "CORPORATION RETIREMENT PLAN" shall mean the Cognizant Retirement
Plan, as in effect from time to time.

          "CORPORATION SAVINGS BEP" shall mean the Cognizant Corporation Savings
Equalization Plan, as in effect from time to time.

          "CORPORATION SAVINGS PLAN" shall mean the Cognizant Corporation
Savings Plan, as in effect from time to time.

          "CORPORATION STOCK OPTION" shall have the meaning set forth in Section
6.1 of this Agreement.

          "CORPORATION STOCK OPTION PLANS" shall mean the 1996 Key Employees'
Stock Incentive Plan, the 1996 Replacement Plan for Certain Employees Holding
The Dun & Bradstreet Corporation Equity-Based Awards or any other stock option
plan established by the Corporation.

          "CORPORATION SERP" shall mean the Cognizant Corporation Supplemental
Executive Retirement Plan, as in effect from time to time.

          "D&B" shall mean The Dun & Bradstreet Corporation, a Delaware
corporation.

          "DATA SERVICES AGREEMENTS" shall mean the Data Services Agreements to
be entered into by Corporation and IMS Health.

          "DISTRIBUTION" shall mean the distribution on the Distribution Date to
holders of record of shares of Corporation Common Stock as of the Distribution
Record Date of the IMS Health Common Shares owned by Corporation on the basis of
one IMS Health Common Share for each outstanding share of Corporation Common
Stock.

          "DISTRIBUTION AGREEMENT" shall mean the Distribution Agreement between
Corporation and IMS Health, dated as of June __, 1998.


          "DISTRIBUTION DATE" shall mean such date as may hereafter be
determined by Corporation's Board of Directors as the date as of which the
Distribution shall be effected.

          "DISTRIBUTION RECORD DATE" shall mean such date as may hereafter be
determined by Corporation's Board of Directors as the record date for the
Distribution.

          "EFFECTIVE TIME" shall mean 12:01 a.m., New York time, on the
Distribution Date.

          "EMPLOYEE BENEFIT DISPUTE" shall include any controversy, dispute or
claim arising out of, in connection with, or in relation to the interpretation,
performance, 

<PAGE>

                                                                              5

nonperformance, validity or breach of this Agreement or otherwise arising out
of, or in any way related to this Agreement, including, without limitation, any
claim based on contract, tort, statute or constitution.

          "EMPLOYEE BENEFIT LITIGATION LIABILITY" shall mean, with respect to a
Business Entity, a Liability relating to a controversy, dispute or claim arising
out of, in connection with or in relation to the interpretation, performance,
nonperformance, validity or breach of an Employee Benefit Plan of such Business
Entity or otherwise arising out of, or in any way related to such Employee
Benefit Plan, including, without limitation, any claim based on contract, tort,
statute or constitution.

          "EMPLOYEE BENEFIT PLANS" shall mean, with respect to a Business
Entity, all "employee benefit plans" (within the meaning of Section 3(3) of
ERISA), "multiemployer plans" (within the meaning of Section 3(37) of ERISA),
retirement, pension, savings, profit-sharing, welfare, stock purchase, stock
option, equity-based, severance, employment, change-in-control, fringe benefit,
collective bargaining, bonus, incentive, deferred compensation and all other
employee benefit plans, agreements, programs, policies or other arrangements
(including any funding mechanisms therefor), whether or not subject to ERISA,
whether formal or informal, oral or written, legally binding or not, under which
(i) any past, present or future employee of the Business Entity or its
Subsidiaries has a right to benefits and (ii) the Business Entity or its
Subsidiaries has any Liability.

          "EMPLOYEE BENEFIT RECORDS" shall mean all agreements, documents,
books, records or files relating to the Employee Benefit Plans of Corporation
and IMS Health.

          "EMPLOYEE BENEFIT WELFARE PLANS" shall mean, with respect to a
Business Entity, all Employee Benefit Plans that are "welfare plans" within the
meaning of Section 3(1) of ERISA.

          "EMPLOYER STOCK" shall mean, after the Distribution Date, IMS Health
Common Shares credited to the account of an IMS Health Employee and Corporation
Common Stock credited to the account of a Corporation Post-Distribution Employee
in the pooled stock fund of the respective savings plan in which such employee
participates, pursuant to Section 3.4.

          "ERISA" shall mean the Employee Retirement Income Security Act of
1974, as amended, and the regulations promulgated thereunder, including any
successor legislation.

          "IMS HEALTH" shall mean IMS Health Incorporated, a Delaware
corporation.


<PAGE>

                                                                              6

          "IMS HEALTH COMMITTEE" shall mean the Executive Compensation and
Benefits Committee of the Board of Directors of IMS Health.

          "IMS HEALTH COMMON SHARES" shall have the meaning set forth in the
recitals hereto.

          "IMS HEALTH DISABLED EMPLOYEES" shall mean all employees of the IMS
Health Group who are receiving benefits under the Corporation Long-Term
Disability Plan immediately prior to the Effective Time.

          "IMS HEALTH EMPLOYEES" shall mean persons who, immediately after the
Effective Time, are employed by the IMS Health Group (including persons who are
absent from work by reason of layoff or leave of absence and inactive employees
treated as such by agreement therewith).

          "IMS HEALTH EMPLOYEE STOCK PURCHASE PLAN" shall mean the Employee
Stock Purchase Plan to be adopted by IMS Health pursuant to Section 6.5.

          "IMS HEALTH GROUP" shall mean IMS Health and each Business Entity
which is contemplated to remain or become a Subsidiary of IMS Health pursuant to
the Distribution Agreement.

          "IMS HEALTH NONQUALIFIED PLANS" shall mean the nonqualified plans to
be adopted by IMS Health pursuant to Section 4.2.

          "IMS HEALTH PENSION REP" shall mean the IMS Health Retirement Excess
Plan to be adopted by IMS Health pursuant to Section 4.2.

          "IMS HEALTH RATIO" shall have the meaning set forth in Section 6.1(b)
of this Agreement.

          "IMS HEALTH REPLACEMENT PLANS" shall mean the replacement plans to be
adopted by IMS Health pursuant to Section 6.1(b) of this Agreement.

          "IMS HEALTH RESTRICTED STOCK" shall have the meaning set forth in
Section 6.3 of this Agreement.

          "IMS HEALTH RETIREES" shall mean persons who (i) were Corporation
Pre-Distribution Employees, (ii) terminated employment from the IMS Health Group
prior to the Effective Time (iii) are not Corporation Post-Distribution
Employees after the Effective Time and (iv) would have been IMS Health Employees
had they remained employed, after the Distribution, by the same employer from
which they terminated employment.

<PAGE>

                                                                              7

          "IMS HEALTH RETIREMENT PLAN" shall mean the defined benefit plan to be
adopted by IMS Health pursuant to Section 2.2(a) of this Agreement.

          "IMS HEALTH RETIREMENT PLAN EFFECTIVE DATE" shall have the meaning set
forth in Section 2.2(a) of this Agreement.

          "IMS HEALTH RETIREMENT PLAN SEGREGATION RATIO" shall equal a fraction,
the numerator of which is the Present Value of the accrued vested and nonvested
benefits (as defined in ERISA Section 4044(a)(1)-(6)) of the IMS Health
Transferred Retirement Plan Employees under the Corporation Retirement Plan at
the Effective Time, and the denominator of which is the Present Value of the
accrued vested and nonvested benefits (as defined in ERISA Section
4044(a)(1)-(6)) of the Corporation Pre-Distribution Employees under the
Corporation Retirement Plan at the Effective Time.     

          "IMS HEALTH RETIREMENT PLAN TRANSFER DATE" shall have the meaning set
forth in Section 2.2(b) of this Agreement.

          "IMS HEALTH SAVINGS BEP" shall mean the IMS Health Savings
Equalization Plan to be adopted by IMS Health pursuant to Section 4.2.

          "IMS HEALTH SAVINGS PLAN" shall mean the defined contribution plan to
be adopted by IMS Health pursuant to Section 3.2(a) of this Agreement.

          "IMS HEALTH SAVINGS PLAN TRANSFER DATE" shall have the meaning set
forth in Section 3.2(b) of this Agreement.

          "IMS HEALTH SERP" shall mean the IMS Health Supplemental Executive
Retirement Plan to be adopted by IMS Health pursuant to Section 4.2.       

          "IMS HEALTH TRANSFERRED RETIREMENT PLAN EMPLOYEES" shall have the
meaning set forth in Section 2.2(a) of this Agreement.

          "IMS HEALTH TRANSFERRED SAVINGS PLAN EMPLOYEES" shall have the meaning
set forth in Section 3.2(a) of this Agreement.    

          "INFORMATION STATEMENT" shall mean the Information Statement sent to
the holders of shares of Corporation Common Stock in connection with the
Distribution, including any amendment or supplement thereto.

          "INTELLECTUAL PROPERTY AGREEMENT" shall mean the intellectual property
and licensing agreement between Corporation and IMS Health.

          "LIABILITIES" shall mean any and all losses, claims, charges, debts,
demands, actions, causes of action, suits, 

<PAGE>

                                                                              8

damages, obligations, payments, costs and expenses, sums of money, accounts,
reckonings, bonds, specialties, indemnities and similar obligations,
exonerations, covenants, contracts, controversies, agreements, promises, doings,
omissions, variances, guarantees, make whole agreements and similar obligations,
and other liabilities, including all contractual obligations, whether absolute
or contingent, matured or unmatured, liquidated or unliquidated, accrued or
unaccrued, known or unknown, whenever arising, and including those arising under
any law, rule, regulation, Action, threatened or contemplated Action (including
the costs and expenses of demands, assessments, judgments, settlements and
compromises relating thereto and attorneys' fees and any and all costs and
expenses (including allocated costs of in-house counsel and other personnel),
whatsoever reasonably incurred in investigating, preparing or defending against
any such Actions or threatened or contemplated Actions), order or consent decree
of any governmental or other regulatory or administrative agency, body or
commission or any award of any arbitrator or mediator of any kind, and those
arising under any contract, commitment or undertaking, including those arising
under this Agreement, the Distribution Agreement or any Ancillary Agreement, in
each case, whether or not recorded or reflected or required to be recorded or
reflected on the books and records or financial statements of any person.

          "NONEMPLOYER STOCK" shall mean, after the Distribution Date, IMS
Health Common Shares credited to the account of a Corporation Post-Distribution
Employee and Corporation Common Stock credited to an account of an IMS Health
Employee in the pooled stock fund of the respective savings plan in which such
employee participates, pursuant to Section 3.4.

          "PBGC" shall mean the Pension Benefit Guaranty Corporation or any
successor entity thereto.

          "PBGC ASSUMPTIONS" shall mean the actuarial assumptions set forth in
29 C.F.R. Part 2619, ET SEQ.


          "PERSON" shall mean any natural person, corporation, business trust,
joint venture, association, company, partnership or government, or any agency or
political subdivision thereof.

          "PRESENT VALUE" shall mean the single sum value of a series of future
payments, determined utilizing PBGC Assumptions in effect as of the measurement
date.

          "SERVICE" shall mean the Internal Revenue Service or any successor
entity thereto.

          "SHARED TRANSACTION SERVICES AGREEMENTS" shall mean the Shared
Transaction Services Agreements between Corporation and IMS Health.

<PAGE>

                                                                              9

          "SUBSIDIARY" shall mean any corporation, partnership or other entity
of which another entity (i) owns, directly or indirectly, ownership interests
sufficient to elect a majority of the Board of Directors (or persons performing
similar functions) (irrespective of whether at the time any other class or
classes of ownership interests of such corporation, partnership or other entity
shall or might have such voting power upon the occurrence of any contingency) or
(ii) is a general partner or an entity performing similar functions (E.G., a
trustee).

          "TAX ALLOCATION AGREEMENT" shall mean the Tax Allocation Agreement
between Corporation and IMS Health.

          "TRANSITION SERVICES AGREEMENT" shall mean the Transition Services
Agreement between Corporation and IMS Health.


                                      ARTICLE II
                             CORPORATION RETIREMENT PLAN

          SECTION 2.1.  CORPORATION RETIREMENT PLAN.  From and after the
Effective Time, Corporation shall continue to sponsor the Corporation Retirement
Plan.  Active participation of IMS Health Employees in the Corporation
Retirement Plan shall cease immediately after the Effective Time.  Nothing
contained in this Article II shall have the effect of accelerating the degree to
which any individual has a vested interest in the Corporation Retirement Plan or
the IMS Health Retirement Plan.

          SECTION 2.2.  IMS HEALTH RETIREMENT PLAN.  (a)  As soon as practicable
after the Effective Time, but not later than the first day of the fourth
calendar month that begins after the Effective Time (herein referred to as the
"IMS HEALTH RETIREMENT PLAN EFFECTIVE DATE"), IMS Health shall establish the IMS
Health Retirement Plan for the benefit of IMS Health Employees, IMS Disabled
Employees and IMS Health Retirees who were participants in the Corporation
Retirement Plan immediately prior to the Effective Time (the "IMS HEALTH
TRANSFERRED RETIREMENT PLAN EMPLOYEES").  As soon as practicable after the
Effective Time, Corporation shall cause the trustee of the Corporation
Retirement Plan to segregate, in accordance with the spinoff provisions set
forth under Section 414(l) of the Code, the assets of the Corporation Retirement
Plan allocable to IMS Health Transferred Retirement Plan Employees in an amount
equal to the sum of (i) and (ii), as follows:

     (i)  the amount allocable to IMS Health Transferred Retirement Plan
          Employees under ERISA Section 4044 as of the Effective Time,
          determined using PBGC Assumptions; and

     (ii) the excess (if any) of the fair market value of assets of the
          Corporation Retirement Plan over the Present Value of the vested and
          nonvested benefits accrued 

<PAGE>

                                                                             10

          thereunder for all the Corporation Pre-Distribution Employees as of
          the Effective Time, multiplied by the IMS Health Retirement Plan
          Segregation Ratio.

          (b)   As soon as practicable after the Effective Time, the assets
allocable to the IMS Health Transferred Retirement Plan Employees shall be
transferred to a separate trust established under the IMS Health Retirement Plan
(such date herein referred to as the "IMS HEALTH RETIREMENT PLAN TRANSFER
DATE"); PROVIDED, HOWEVER, that in no event shall such transfer take place until
Corporation shall make all required amendments to the Corporation Retirement
Plan and related trust agreement necessary to provide for the segregation and
transfer of assets described in this Section 2.2.  The value of such assets to
be transferred shall equal the value of segregated assets determined under
Section 2.2(a) of this Agreement, adjusted as follows:

     (i)  reduced by the amount of benefit payments made under the Corporation
          Retirement Plan with respect to IMS Health Transferred Retirement Plan
          Employees from the Effective Time to the IMS Health Retirement Plan
          Transfer Date; and

     (ii) increased (or decreased) by the share of the net investment income (or
          loss) and expenses from the Effective Time to the IMS Health
          Retirement Plan Transfer Date attributable to the value of such
          segregated assets.

          (c)  Unless otherwise agreed to by Corporation and IMS Health, the
form of the assets to be transferred shall consist of an undivided percentage
interest in each asset that is held by the Corporation Retirement Plan on the
IMS Health Retirement Plan Transfer Date, such undivided percentage interest
being equal to the value of assets allocable to the IMS Health Transferred
Retirement Plan Employees, divided by the fair market value of plan assets.

          (d)  Prior to the IMS Health Retirement Plan Transfer Date, all
benefit payments to IMS Health Transferred Retirement Plan Employees shall be
made from the Corporation Retirement Plan.

          SECTION 2.3.  ALLOCATION OF LIABILITIES.  The IMS Health Group shall
assume all Liabilities relating to the participation of IMS Health Transferred
Retirement Plan Employees in the Corporation Retirement Plan.  The Corporation
Group shall retain all other Liabilities relating to the Corporation Retirement
Plan.

<PAGE>

                                                                             11


                                     ARTICLE III
                               CORPORATION SAVINGS PLAN

          SECTION 3.1.  CORPORATION SAVINGS PLAN.  From and after the Effective
Time, Corporation shall continue to sponsor the Corporation Savings Plan. Active
participation of IMS Health Employees in the Corporation Savings Plan shall
cease immediately after the Effective Time.  Nothing contained in this Article
III shall have the effect of accelerating the degree to which any individual has
a vested interest in the Corporation Savings Plan or the IMS Health Savings
Plan.

          SECTION 3.2.  IMS HEALTH SAVINGS PLAN.  (a) As of the Effective Time,
IMS Health shall adopt the IMS Health Savings Plan for the benefit of IMS Health
Employees, IMS Health Disabled Employees and IMS Health Retirees who were
participants in the Corporation Savings Plan immediately prior to the Effective
Time (the "IMS HEALTH TRANSFERRED SAVINGS PLAN EMPLOYEES").  

          (b) Prior to the date on which the transfer of assets and liabilities
to the IMS Health Savings Plan shall occur (the "IMS HEALTH SAVINGS PLAN
TRANSFER DATE"), which date shall occur as promptly as practicable following the
Effective Time, Corporation shall (A) cause the trustee of the Corporation
Savings Plan to segregate, in accordance with the spinoff provisions set forth
under Section 414(l) of the Code, the assets of the Corporation Savings Plan
representing the full account balances of IMS Health Transferred Savings Plan
Employees for all periods of participation through the Effective Time
(including, as applicable, all contributions and all earnings attributable
thereto); (B) make all required filings and submissions to the appropriate
governmental agencies; and (C) make all required amendments to the Corporation
Savings Plan and related trust agreement necessary to provide for the
segregation and transfer of assets described in this Section 3.2.

          (c) On the IMS Health Savings Plan Transfer Date, IMS Health shall
cause the trustee of the Corporation Savings Plan to transfer to the trustee of
the IMS Health Savings Plan the full account balances (inclusive of loans) of
IMS Health Transferred Savings Plan Employees in kind based on those investment
funds in which such account balances are then invested (including, but not
limited to, the pooled stock fund described in Section 3.4); PROVIDED, HOWEVER,
that loans to IMS Health Transferred Savings Plan Employees shall be transferred
in the form of notes.  In consideration of the segregation and transfer of
assets described herein, the IMS Health Savings Plan shall, as of the IMS Health
Savings Plan Transfer Date, assume all Liabilities attributable to such assets.

          SECTION 3.3.  OUTSTANDING LOANS.  During their employment with
Corporation, IMS Health Transferred Savings Plan Employees who have outstanding
loans originally made from the Corporation Savings Plan shall be permitted to
repay such loans 

<PAGE>

                                                                             12

by way of regular deductions from their paychecks, and, prior to the IMS Health
Savings Plan Transfer Date, Corporation or IMS Health (as the case may be) shall
cause all such deductions to be forwarded to the Corporation Savings Plan as
promptly as practicable.

          SECTION 3.4.  EMPLOYER STOCK FUND.  (a) Participants in the
Corporation Savings Plan who, immediately prior to the Effective Time, have
balances in the Corporation Common Stock fund shall have such balances
converted, as of the Effective Time, to the extent applicable, to units in a
pooled stock fund consisting of Corporation Common Stock and IMS Health Common
Shares.  The initial ratio of stock in the pooled stock fund shall be one share
of Corporation Common Stock to one share of IMS Health Common Shares.  The
percentage interest of each participant in the pooled stock fund as of the
Effective Time shall equal such participant's percentage interest in the
Corporation Common Stock fund immediately prior to the Effective Time.  The IMS
Health Savings Plan shall maintain a pooled stock fund, to which the pooled
stock fund assets of IMS Health Transferred Savings Plan Employees in the
Corporation Savings Plan shall be transferred on the IMS Health Savings Plan
Transfer Date.  

          (b) Prior to the first anniversary of the Distribution Date, each
participant shall liquidate his or her units of Nonemployer Stock in the pooled
stock fund and invest the proceeds thereof in any other investment option
available under the applicable plan.  If the participant does not liquidate such
units, such units shall be liquidated and invested in a fixed income investment
option available under the applicable plan. 

          (c)  A participant may not acquire additional units in the pooled
stock fund from or after the Effective Time.

          SECTION 3.5.  ALLOCATION OF LIABILITIES.  The IMS Health Group shall
assume all Liabilities relating to the participation of IMS Health Transferred
Savings Plan Employees in the Corporation Savings Plan.  The Corporation Group
shall retain all other Liabilities relating to the Corporation Savings Plan.


                                      ARTICLE IV
                                  NONQUALIFIED PLANS

          SECTION 4.1.  CORPORATION NONQUALIFIED PLANS.  From and after the
Effective Time, Corporation shall continue to sponsor the Corporation SERP, the
Corporation Pension REP and the Corporation Savings BEP (collectively, the
"CORPORATION NONQUALIFIED PLANS") for the benefit of Corporation
Post-Distribution Employees and Corporation Retirees who, prior to the Effective
Time, were participants thereunder.

<PAGE>

                                                                             13

          SECTION 4.2.  IMS HEALTH NONQUALIFIED PLANS.  As of the Effective
Time, IMS Health shall (i) adopt the IMS Health SERP, the IMS Health Pension REP
and the IMS Health Savings BEP  (collectively, the "IMS Health Nonqualified
Plans") for the benefit of IMS Health Employees and IMS Health Retirees who were
participants in the Corporation Nonqualified Plans immediately prior to the
Effective Time and (ii) assume the Liabilities for benefits under the
Corporation Nonqualified Plans with respect to such employees. 

          SECTION 4.3.  JOINT AND SEVERAL LIABILITY.  Corporation and IMS Health
acknowledge joint and several liability under the Employee Benefits Agreement
dated as of October 29, 1996 among D&B, Corporation and ACNielsen with respect
to certain nonqualified plans maintained by D&B prior to such date.  To the
extent such joint and several liability is imposed on Corporation in respect of
a liability assumed by IMS Health under this Agreement, Corporation shall be
entitled to contribution from IMS Health for the amount of such liability
imposed.  To the extent joint and several liability is imposed on IMS Health in
respect of a liability assumed by Corporation under this Agreement, IMS Health
shall be entitled to contribution from Corporation for the amount of such
liability imposed.


                                      ARTICLE V
                                    WELFARE PLANS

          SECTION 5.1.  EMPLOYEE BENEFIT WELFARE PLANS.  Except as provided in
Section 5.4 and Section 5.5 below, from and after the Effective Time,
Corporation shall sponsor its Employee Benefit Welfare Plans solely for the
benefit of Corporation Post-Distribution Employees, Corporation Disabled
Employees and Corporation Retirees.  From and after the Effective Time, IMS
Health shall sponsor its Employee Benefit Welfare Plans solely for the benefit
of IMS Health Employees, IMS Health Retirees and IMS Health Disabled Employees. 
Notwithstanding the foregoing, neither Corporation nor IMS Health shall have any
obligation to sponsor any Employee Benefit Welfare Plan from or after the
Effective Time.

          SECTION 5.2.  DOLLAR LIMITS.  With respect to any medical and dental
plan that may be sponsored by IMS Health after the Effective Time, IMS Health
shall give effect, in determining any deductible, maximum out-of-pocket
limitations and annual plan maximums, to claims incurred during 1998 prior to
the Effective Time by IMS Health Employees, IMS Health Retirees and IMS Health
Disabled Employees under similar plans maintained by Corporation (or any
Affiliate thereof) for their benefit immediately prior to the Effective Time.

          SECTION 5.3.  SEVERANCE PLANS.  The Corporation Group shall retain all
Liabilities with respect to severance payments made or to be made to Corporation
Retirees. The IMS Health Group 

<PAGE>

                                                                             14

shall retain all Liabilities with respect to severance payments made or to be
made to IMS Health Retirees.   For purposes of this Section 5.3, the term
"severance payments" shall include any welfare benefit coverage provided under
severance plans.  

          SECTION 5.4.  FLEXIBLE SPENDING ACCOUNTS.  From the Effective Time
until December 31, 1998, Corporation shall continue to sponsor its flexible
spending accounts for all Corporation Pre-Distribution Employees; PROVIDED,
HOWEVER, that IMS Health shall cause all deductions from participant paychecks
to be forwarded to Corporation within two business days thereafter.

          SECTION 5.5.  ALLOCATION OF LIABILITIES.  (a) The IMS Health Group
shall retain responsibility for and continue to pay all claims and
administrative expenses relating to the Corporation self-insured Medical and
Dental Plans with respect to claims incurred prior to the Effective Time, but
which are paid after the Effective Time, by IMS Health Employees, IMS Health
Disabled Employees, IMS Health COBRA participants and IMS Health Retirees as
well as their covered dependents.  Any claims and administrative expenses
relating to the Corporation self-insured Medical and Dental Plans with respect
to claims incurred prior to the Effective Time, but which are paid after the
Effective Time, by Corporation Pre-Distribution Employees who are not IMS Health
Employees will remain the responsibility of The Corporation Group.

          (b) The Corporation Group shall retain responsibility for and continue
to pay all premiums, expenses and benefits relating to the Corporation Employee
Welfare Plans with respect to claims incurred (for self-insured plans) or
premiums due (for insured plans) from and after the Effective Time by
Corporation Post-Distribution Employees, Corporation Disabled Employees,
Corporation COBRA participants and Corporation Retirees as well as their covered
dependents.

          (c) The IMS Health Group shall retain responsibility for and continue
to pay all premiums, expenses and benefits relating to the Employee Welfare
Plans with respect to claims incurred (for self-insured plans) or premiums due
(for insured plans) from and after the Effective Time by IMS Health Employees,
IMS Health Disabled Employees, IMS Health COBRA participants and IMS Health
Retirees as well as their covered dependents.

          (d) For the purposes of this Section 5.5, a claim is deemed incurred
when the services that are the subject of the claim are performed; in the case
of life insurance, when the death occurs; in the case of long-term disability,
when the disability occurs; and, in the case of a hospital stay, when the
employee first enters the hospital.  Notwithstanding the foregoing, claims
incurred by any employee of a pre-Distribution Subsidiary of Corporation or
their covered dependents under any welfare plan maintained by such Subsidiary
solely for the benefit 

<PAGE>

                                                                             15

of its employees and their dependents shall, whether incurred prior to, on or
after the Effective Time, be the sole responsibility and liability of that
Subsidiary.

          (e) The Corporation Group shall be responsible for all COBRA coverage
for any Corporation Retiree and his or her covered dependents who participated
in a Corporation Employee Benefit Welfare Plan and who had or have a loss of
health care coverage due to a qualifying event occurring prior to the Effective
Time.  The IMS Health Group shall be responsible for all COBRA coverage for any
IMS Health Retiree and his or her covered dependents who participated in a
Corporation Employee Benefit Welfare Plan and who had or have a loss of health
care coverage due to a qualifying event occurring prior to, or at, the Effective
Time.  Notwithstanding the foregoing, a pre-Distribution Subsidiary of
Corporation shall be responsible for all COBRA coverage for its former employees
and covered dependents who participated in a plan maintained solely for their
benefit whether the applicable event occurs prior to, on or after the Effective
Time.  COBRA coverage to which a Corporation Post-Distribution Employee is
entitled as a result of a qualifying event occurring at or after the Effective
Time shall be the responsibility of the Corporation Group.

          SECTION 5.6.  ALLOCATION OF THE CORPORATION'S SELF-INSURED MEDICAL AND
DENTAL PLANS RESERVE FOR CLAIMS INCURRED BUT NOT YET REPORTED (IBNR).  The IBNR
reserve of $x.x million will be allocated between the Corporation Group and IMS
Health based on the following methodology:

          (a) The IBNR reserve will be separated into its components by type of
coverage (i.e., indemnity medical, point-of-service medical and dental).

          (b) The IBNR reserve by coverage type will be divided by the average
number of Corporation Pre-Distribution Employees enrolled in the three months.

          SECTION 5.7.  RETIREE WELFARE PLANS.  The Corporation Group shall be
responsible for providing retiree welfare benefits, where applicable, to
Corporation Retirees and Corporation Post-Distribution Employees.  The IMS
Health Group shall be responsible for providing retiree welfare benefits, where
applicable, to IMS Health Retirees and IMS Health Employees.


                                      ARTICLE VI
                                  EQUITY-BASED PLANS

          SECTION 6.1.  CORPORATION STOCK OPTIONS.  Stock options awarded under
the Corporation Stock Option Plans ("CORPORATION STOCK OPTIONS") shall be
treated as follows:

<PAGE>

                                                                             16

          (a)  CORPORATION POST-DISTRIBUTION EMPLOYEES; AND CORPORATION DISABLED
EMPLOYEES.  From and after the Effective Time, each unexercised Corporation
Stock Option held by Corporation Post-Distribution Employees and Corporation
Disabled Employees shall remain outstanding pursuant to the terms of the award
agreements and the Corporation Stock Option Plans; PROVIDED, HOWEVER, that from
and after such time, each unexercised Corporation Stock Option shall be adjusted
as follows: (i) the number of shares of Corporation Common Stock covered by the
adjusted stock option shall be determined by (A) multiplying the number of
shares of Corporation Common Stock covered by the Corporation Stock Option by a
fraction, the numerator of which equals the average of high and low trading
prices of a share of Corporation Common Stock for the five trading days
immediately preceding the ex-dividend date, and the denominator of which equals
the average of high and low trading prices of a share of Corporation Common
Stock for the five trading days starting on the ex-dividend trading Date
("CORPORATION RATIO") and (B) rounding down the result to a whole number of
shares and (ii) the exercise price of the adjusted stock option shall equal the
original exercise price divided by the Corporation Ratio.

          (b)  IMS HEALTH EMPLOYEES; AND IMS HEALTH DISABLED EMPLOYEES.  As of
the Effective Time, (i) each unexercised Corporation Stock Option held by IMS
Health Employees and IMS Health Disabled Employees shall be cancelled and (ii)
such individuals shall receive replacement stock options awarded under the IMS
Health Replacement Plans, which shall be adopted by IMS Health prior to the
Effective Time.  The number of IMS Health Common Shares covered by each
replacement stock option shall be determined by (i) multiplying the number of
shares of Corporation Common Stock covered by the cancelled Corporation Stock
Option by a fraction, the numerator of which equals the average of high and low
trading prices of a share of Corporation Common Stock for the five trading days
immediately preceding the ex-dividend date, and the denominator of which equals
the average of high and low trading prices of an IMS Health Common Share for the
five trading days starting on the regular way trading date ("IMS HEALTH RATIO")
and (ii) rounding down the result to a whole number of shares. The exercise
price of each replacement stock option shall be determined by dividing the
exercise price of the cancelled Corporation Stock Option by the IMS Health
ratio.   Except as otherwise provided in the IMS Health Replacement Plans, all
other terms of the replacement stock options shall remain substantially
identical to the terms of the cancelled Corporation Stock Options. 

          (c)  IMS HEALTH RETIREES; AND CORPORATION RETIREES.  As of the
Effective Time, (i) each unexercised Corporation Stock Option held by IMS Health
Retirees and Corporation Retirees shall be adjusted in substantially the same
manner as employees of the Corporation Group and (ii) IMS Health shall offer to
such IMS Health Retirees and Corporation Retirees, as the IMS Health 

<PAGE>

                                                                             17

Committee shall determine, alternative adjustments or substitutions, provided
such Retirees agree to surrender their adjusted Corporation Stock Options.

          SECTION 6.2.  CORPORATION LSARS.  All limited stock appreciation
rights awarded under the Corporation Stock Option Plans ("CORPORATION LSARS")
shall be adjusted or substituted (as the case may be) in substantially the same
manner as the Corporation Stock Options described in Section 6.1 above.

          SECTION 6.3.  RESTRICTED STOCK PLAN.  Restricted stock awarded under
the Corporation Stock Option Plans ("CORPORATION RESTRICTED STOCK") and
restricted stock received as a result of the Distribution ("IMS HEALTH
RESTRICTED STOCK") shall be treated as follows:

          (a)  CORPORATION POST-DISTRIBUTION EMPLOYEES.  As of Effective Time,
IMS Health Restricted Stock credited to Corporation Post-Distribution Employees
shall be adjusted pursuant to the Corporation Stock Option Plans and each such
individual shall receive a number of additional shares of Corporation Restricted
Stock, determined by multiplying the number of shares of forfeited IMS Health
Restricted Stock by the Corporation Ratio and the reciprocal of the IMS Health
Ratio, having the same terms as the Corporation Restricted Stock from which they
arose.

          (b)  IMS HEALTH EMPLOYEES.  As of the Effective Time, Corporation
Restricted Stock and IMS Health Restricted Stock credited to IMS Health
Employees shall be forfeited and such individuals shall receive replacement IMS
Health Restricted Stock equal to (i) the number of shares of forfeited IMS
Health Restricted Stock plus (ii) the number of shares of forfeited Corporation
Restricted Stock multiplied by the IMS Health Ratio and the reciprocal of the
Corporation Ratio, such replacement shares of IMS Health Restricted Stock to
have the same terms as the Corporation Restricted Stock from which they arose.

          SECTION 6.4.   EXECUTIVE ANNUAL INCENTIVE PLAN.  Outstanding awards
under the Corporation Executive Annual Incentive Plan shall be treated as
determined by the Corporation and IMS Health, respectively.

          SECTION 6.5.  CORPORATION EMPLOYEE STOCK PURCHASE PLAN.  (a)  From and
after the Effective Time, Corporation shall continue to sponsor the Corporation
Employee Stock Purchase Plan.

          (b)  As of the Effective Time, IMS Health shall adopt the IMS Health
Employee Stock Purchase Plan for the benefit of IMS Health Employees.

          SECTION 6.6.  ALLOCATION OF LIABILITIES.  The IMS Health Group shall
assume all Liabilities with respect to awards granted to IMS Health Employees,
IMS Health Retirees, Corporation 

<PAGE>

                                                                             18

Retirees and IMS Health Disabled Employees pursuant to the IMS Health
Replacement Option Plan.  The Corporation Group shall retain all other
Liabilities with respect to awards granted pursuant to the Corporation Stock
Option Plans (including, but not limited to, awards granted to Corporation
Post-Distribution Employees).  


                                     ARTICLE VII
                            FOREIGN EMPLOYEE BENEFIT PLANS

          SECTION 7.1.  FOREIGN PLANS.  Corporation and IMS Health shall agree,
with regard to any plans maintained outside the United States, to the
disposition of such plans.


                                     ARTICLE VIII
                           OTHER EMPLOYEE BENEFIT ISSUES

          SECTION 8.1.  EMPLOYEE BENEFIT LITIGATION LIABILITIES.  Except as
otherwise expressly provided in this agreement or with respect to Articles II,
III and VI hereof, the IMS Health Group shall assume all Employee Benefit
Litigation Liabilities that are asserted by Corporation Pre-Distribution
Employees prior to the Effective Time.

          SECTION 8.2.  WORKERS' COMPENSATION.  The Corporation Group shall
retain all Liabilities relating to workers' compensation claims that were
incurred (a) prior to the Effective Time with respect to Corporation
Pre-Distribution Employees who were employed by the Corporation Group and (b) on
and after the Effective Time with respect to Corporation Post-Distribution
Employees.  The IMS Health Group shall retain all Liabilities relating to
workers' compensation claims that were incurred (a) prior to the Effective Time
with respect to Corporation Pre-Distribution Employees who were employed by the
IMS Health Group and (b) on and after the Effective Time with respect to IMS
Health Employees.  For purposes of this paragraph, a claim is deemed incurred
when the injury that is the subject of the claim occurs.


                                      ARTICLE IX
                              BENEFIT PLAN PARTICIPATION

          SECTION 9.1.  CORPORATION PLANS.  Except as specifically provided
herein, all IMS Health Employees shall cease participation in all domestic
Corporation Employee Benefit Plans as of the Effective Time.

          SECTION 9.2.  IMS HEALTH PLANS.  Except as provided in Section 5.6
herein, (a) with respect to any newly created Employee Benefit Plan sponsored by
the IMS Health Group after the Effective Time, the IMS Health Group shall cause
to be recognized 

<PAGE>

                                                                             19

(to the extent applicable) each IMS Health Employee's (i) past service with the
Corporation Group to the extent recognized under similar plans maintained by the
Corporation Group immediately prior to the Effective Time and (ii) accrued but
unused vacation time and sick days, and (b) any IMS Health Employee who
participated in a Corporation Employee Benefit Plan immediately prior to the
Effective Time shall be entitled to immediate participation in a similar newly
created Employee Benefit Plan sponsored by the IMS Health Group.

          SECTION 9.3.  SUBSEQUENT EMPLOYER.  Except as provided in Section 5.6
herein, if, during the one-year period following the Effective Time, a
Corporation Post-Distribution Employee or a IMS Health Employee terminates
employment with his or her employer and then immediately commences employment
with the Corporation Group or the IMS Health Group, the subsequent employer
shall cause to be recognized (to the extent applicable) such employee's past
service with the Corporation Group or the IMS Health Group to the extent
recognized under similar plans maintained by the prior employer. 
Notwithstanding the foregoing, no past service shall be recognized with respect
to pension accruals under the defined benefit plans of the subsequent employer.

          SECTION 9.4.  RIGHT TO AMEND OR TERMINATE.  Except as specifically
provided herein, nothing in this Agreement shall be construed or interpreted to
restrict the Corporation Group's or the IMS Health Group's right or authority to
amend or terminate any of their Employee Benefit Plans following the Effective
Time.


                                      ARTICLE X
                                ACCESS TO INFORMATION

          SECTION 10.1.  ACCESS TO INFORMATION.  Article IV of the Distribution
Agreement shall govern the rights of the Corporation Group and the IMS Health
Group with respect to access to information.  The term "RECORDS" in that Article
shall be read to include all Employee Benefit Records.


                                      ARTICLE XI
                                   INDEMNIFICATION

          SECTION 11.1.  INDEMNIFICATION.  Article III of the Distribution
Agreement shall govern the rights of the Corporation Group and the IMS Health
Group with respect to indemnification.  The term "CORPORATION LIABILITIES" in
that Article shall be read to include all Liabilities assumed or retained by the
Corporation Group pursuant to this Agreement.  The term "IMS HEALTH LIABILITIES"
in that Article shall be read to include all Liabilities assumed or retained by
the IMS Health Group pursuant to this Agreement.  

<PAGE>

                                                                             20

                                     ARTICLE XII
                                  DISPUTE RESOLUTION

          Section 12.1.  DISPUTE RESOLUTION.  Article VI of the Distribution
Agreement shall govern the rights of the Corporation Group and the IMS Health
Group with respect to dispute resolution.  The term "AGREEMENT DISPUTE" in that
Article shall be read to include all Employee Benefit Disputes.


                                     ARTICLE XIII
                                    MISCELLANEOUS

          SECTION 13.1.  COMPLETE AGREEMENT; CONSTRUCTION.  This Agreement,
including the Exhibits and Schedules (if any), and the Distribution Agreement
shall constitute the entire agreement between the parties with respect to the
subject matter hereof and shall supersede all previous negotiations, commitments
and writings with respect to such subject matter.  In the event of any
inconsistency between this Agreement and any Schedule hereto, the Schedule shall
prevail.  Other than Sections 2.7 and 4.5 and Article VI of the Distribution
Agreement, which shall prevail over any inconsistent or conflicting provisions
in this Agreement, notwithstanding any other provisions in this Agreement to the
contrary, in the event and to the extent that there shall be a conflict between
the provisions of this Agreement and the provisions of the Distribution
Agreement, this Agreement shall control.

          SECTION 13.2.  ANCILLARY AGREEMENTS.  This Agreement is not intended
to address, and should not be interpreted to address, the matters specifically
and expressly covered by the Ancillary Agreements.

          SECTION 13.3.  COUNTERPARTS.  This Agreement may be executed in one or
more counterparts, all of which shall be considered one and the same agreement,
and shall become effective when one or more such counterparts have been signed
by each of the parties and delivered to the other parties.

          SECTION 13.4.  SURVIVAL OF AGREEMENTS.  Except as otherwise
contemplated by this Agreement, all covenants and agreements of the parties
contained in this Agreement shall survive the Distribution Date.

          SECTION 13.5.  EXPENSES.  Except as otherwise set forth in this
Agreement, the Distribution Agreement or any Ancillary Agreement, all costs and
expenses incurred on or prior to the Distribution Date (whether or not paid on
or prior to the Distribution Date) in connection with the preparation,
execution, delivery and implementation of this Agreement, the Distribution
Agreement, any Ancillary Agreement, the Information Statement (including any
registration statement on Form 10 of which such Information Statement may be a
part) and the Distribution and the 

<PAGE>

                                                                             21

consummation of the transactions contemplated thereby shall be charged to and
paid by IMS Health.  Except as otherwise set forth in this Agreement, the
Distribution Agreement or any Ancillary Agreement, each party shall bear its own
costs and expenses incurred after the Distribution Date.  Any amount or expense
to be paid or reimbursed by any party hereto to any other party hereto shall be
so paid or reimbursed promptly after the existence and amount of such obligation
is determined and demand therefor is paid.

          SECTION 13.6.  NOTICES.  All notices and other communications
hereunder shall be in writing and hand delivered or mailed by registered or
certified mail (return receipt requested) or sent by any means of electronic
message transmission with delivery confirmed (by voice or otherwise) to the
parties at the following addresses (or at such other addresses for a party as
shall be specified by like notice) and will be deemed given on the date on which
such notice is received:


          To Nielsen Media Research, Inc.:
          299 Park Avenue
          New York, NY  10171
          Telecopy:
          Attn:  Chief Legal Officer

          To IMS Health Incorporated:
          200 Nyala Farms
          Westport, CT 06880
          Telecopy:  (203) 222-4313
          Attn:  General Counsel



          SECTION 13.7.  WAIVERS. The failure of any party to require strict
performance by any other party of any provision in this Agreement will not waive
or diminish that party's right to demand strict performance thereafter of that
or any other provision hereof.

          SECTION 13.8.  AMENDMENTS.  Subject to the terms of Section 13.11
hereof, this Agreement may not be modified or amended except by an agreement in
writing signed by each of the parties hereto.

          SECTION 13.9.  ASSIGNMENT.  This Agreement shall not be assignable, in
whole or in part, directly or indirectly, by any party hereto without the prior
written consent of the other parties hereto, and any attempt to assign any
rights or obligations arising under this Agreement without such consent shall be
void.

<PAGE>

                                                                             22

          SECTION 13.10.  SUCCESSORS AND ASSIGNS.  The provisions to this
Agreement shall be binding upon, inure to the benefit of and be enforceable by
the parties and their respective successors and permitted assigns.

          SECTION 13.11.  TERMINATION.  This Agreement (including, without
limitation, Section 4.3 and Article XI hereof) may be terminated and may be
amended, modified or abandoned at any time prior to the Distribution by and in
the sole discretion of Corporation without the approval of the shareholders of
Corporation.  In the event of such termination, no party shall have any
liability of any kind to any other party or any other person.  After the
Distribution, this Agreement may not be terminated except by an agreement in
writing signed by the parties; PROVIDED, HOWEVER, that Section 4.8 and Article
XII shall not be terminated or amended after the Distribution in respect of the
third party beneficiaries thereto without the consent of such persons.

          SECTION 13.12.  SUBSIDIARIES.  Each of the parties hereto shall cause
to be performed, and hereby guarantees the performance of, all actions,
agreements and obligations set forth herein to be performed by any Subsidiary of
such party or by any entity that is contemplated to be a Subsidiary of such
party on and after the Distribution Date.

          SECTION 13.13.  THIRD PARTY BENEFICIARIES.  Except as provided in
Section 4.3 and Article XI, this Agreement is solely for the benefit of the
parties hereto and their respective Subsidiaries and Affiliates and should not
be deemed to confer upon third parties any remedy, claim, liability,
reimbursement, claim of action or other right in excess of those existing
without reference to this Agreement.

          SECTION 13.14.  TITLE AND HEADINGS.  Titles and headings to sections
herein are inserted for the convenience of reference only and are not intended
to be a part of or to affect the meaning or interpretation of this Agreement.

          SECTION 13.15.  EXHIBITS AND SCHEDULES.  The Exhibits and Schedules,
if any, shall be construed with and as an integral part of this Agreement to the
same extent as if the same had been set forth verbatim herein.

          SECTION 13.16.  GOVERNING LAW.  THIS AGREEMENT SHALL BE GOVERNED BY
AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK APPLICABLE TO
CONTRACTS MADE AND TO BE PERFORMED IN THE STATE OF NEW YORK.

          SECTION 13.17.  CONSENT TO JURISDICTION.  Without limiting the
provisions of Article XII hereof, each of the parties irrevocably submits to the
exclusive jurisdiction of (a) the Supreme Court of the State of New York, New
York County, and (b) the United States District Court for the Southern District
of 

<PAGE>

                                                                             23

New York, for the purposes of any suit, action or other proceeding arising out
of this Agreement or any transaction contemplated hereby.  Each of the parties
agrees to commence any action, suit or proceeding relating hereto either in the
United States District Court for the Southern District of New York or if such
suit, action or other proceeding may not be brought in such court for
jurisdictional reasons, in the Supreme Court of the State of New York, New York
County.  Each of the parties further agrees that service of any process,
summons, notice or document by U.S. registered mail to such party's respective
address set forth above shall be effective service of process for any action,
suit or proceeding in New York with respect to any matters to which it has
submitted to jurisdiction in this Section 13.17.  Each of the parties
irrevocably and unconditionally waives any objection to the laying of venue of
any action, suit or proceeding arising out of this Agreement or the transactions
contemplated hereby in (i) the Supreme Court of the State of New York, New York
County, or (ii) the United States District Court for the Southern District of
New York, and hereby further irrevocably and unconditionally waives and agrees
not to plead or claim in any such court that any such action, suit or proceeding
brought in any such court has been brought in an inconvenient forum.

          SECTION 13.18.  SEVERABILITY.  In the event any one or more of the
provisions contained in this Agreement should be held invalid, illegal or
unenforceable in any respect, the validity, legality and enforceability of the
remaining provisions contained herein and therein shall not in any way be
affected or impaired thereby.  The parties shall endeavor in good-faith
negotiations to replace the invalid, illegal or unenforceable provisions with
valid provisions, the economic effect of which comes as close as possible to
that of the invalid, illegal or unenforceable provisions.

          SECTION 13.19.  GOVERNMENTAL NOTICES; COOPERATION.  Notwithstanding
anything in this Agreement to the contrary, all actions contemplated herein with
respect to Employee Benefit Plans which are to be consummated pursuant to this
Agreement shall be subject to such notices to, and/or approvals by, the Service
or the PBGC (or any other governmental agency or entity) as are required or
deemed appropriate by such Employee Benefit Plan's sponsor.  Each of Corporation
and IMS Health agrees to use its commercially reasonable efforts to cause all
such notices and/or approvals to be filed or obtained, as the case may be.  Each
party hereto shall reasonably cooperate with the other parties with respect to
any government filings, employee notices or any other actions reasonably
necessary to maintain and implement the Employee Benefit Plans covered by this
Agreement.

          SECTION 13.20.  FURTHER ASSURANCES.  From time to time, as and when
reasonably requested by any other party hereto, each party hereto shall execute
and deliver, or cause to be executed and delivered, all such documents and
instruments and shall take, 

<PAGE>

                                                                             24

or cause to be taken, all such further or other actions as such other party may
reasonably deem necessary or desirable to effect the purposes of this Agreement
and the transactions contemplated hereunder.


<PAGE>


          IN WITNESS WHEREOF, the parties have duly executed and entered into
this Agreement, as of the date first above written.


                              COGNIZANT CORPORATION
                              
                              
                                   by
                              
                                      _______________________
                                      Name:
                                      Title:
                              
                              
                              IMS HEALTH INCORPORATED
                              
                                   by
                              
                                      _______________________
                                      Name:
                                      Title:
                              
                              
                              


<PAGE>
                                                                    EXHIBIT 99.1
 
            SUBJECT TO COMPLETION OR AMENDMENT, DATED APRIL 22, 1998
 
INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A
REGISTRATION STATEMENT ON FORM 10 RELATING TO CERTAIN OF THESE SECURITIES HAS
BEEN FILED WITH THE SECURITIES AND EXCHANGE COMMISSION. THIS PRELIMINARY
INFORMATION STATEMENT SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE SOLICITATION
OF AN OFFER TO BUY ANY SECURITIES.
<PAGE>
                             INFORMATION STATEMENT
                               ------------------
 
                            IMS HEALTH INCORPORATED
                                  COMMON STOCK
                          (PAR VALUE $0.01 PER SHARE)
 
                            ------------------------
 
                          NIELSEN MEDIA RESEARCH, INC.
                                  COMMON STOCK
                          (PAR VALUE $0.01 PER SHARE)
 
                            ------------------------
 
    This Information Statement is being furnished in connection with the
distribution (the "Distribution") to holders of common stock, par value $0.01
per share (the "Cognizant Common Stock"), of Cognizant Corporation ("Cognizant")
of all outstanding shares of common stock, par value $0.01 per share (the "IMS
HEALTH Common Stock"), of IMS Health Incorporated ("IMS HEALTH"). As of
          , 1998, Cognizant will have contributed to IMS HEALTH all or
substantially all of those businesses comprising the IMS HEALTH Business (as
defined below), which accounted for approximately 75% of Cognizant's revenues
and 68% of its operating income in 1997. See "IMS HEALTH Business".
 
    Shares of IMS HEALTH Common Stock will be distributed to holders of
Cognizant Common Stock of record as of the close of business on           , 1998
(the "Record Date"). Each such holder will receive one
share of IMS HEALTH Common Stock for every share of Cognizant Common Stock held
on the Record Date. Share certificates representing shares of IMS HEALTH Common
Stock will be mailed on            , 1998 or as promptly as practicable
thereafter. No consideration will be paid by Cognizant's stockholders for shares
of IMS HEALTH Common Stock. Prior to the date hereof, there has not been any
established trading market for the IMS HEALTH Common Stock, although a
"when-issued" market is expected to develop prior to the Distribution.
Application will be made for listing the shares of IMS HEALTH Common Stock on
the New York Stock Exchange (the "NYSE") under the symbol "RX". See "The
Distribution--Listing and Trading of IMS HEALTH Common Stock and Nielsen Media
Research Common Stock".
 
    After the Distribution, Cognizant's only remaining business will be the
Nielsen Media Research Business (as defined below), and, therefore, in
connection with the Distribution, Cognizant will change its name to Nielsen
Media Research, Inc. See "Nielsen Media Research Business". The symbol under
which shares of Cognizant Common Stock (which on and after the Distribution Date
will be known as "Nielsen Media Research Common Stock") will trade on the NYSE
will become "NSN". See "The Distribution--Listing and Trading of IMS HEALTH
Common Stock and Nielsen Media Research Common Stock".
 
                            ------------------------
 
SEE "RISK FACTORS" BEGINNING ON PAGE 13 FOR A DISCUSSION OF CERTAIN FACTORS THAT
SHOULD BE CONSIDERED BY RECIPIENTS OF IMS HEALTH COMMON STOCK AND CONTINUING
                         HOLDERS OF NIELSEN MEDIA RESEARCH COMMON STOCK.
 
                            ------------------------
 
 NO STOCKHOLDER APPROVAL OF THE DISTRIBUTION IS REQUIRED OR SOUGHT. WE ARE NOT
      ASKING YOU FOR A PROXY AND YOU ARE REQUESTED NOT TO SEND US A PROXY.
                            ------------------------
 
 THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
      EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
     SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
     PASSED UPON THE ACCURACY OR ADEQUACY OF THIS INFORMATION STATEMENT.
           ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
 
     THIS INFORMATION STATEMENT DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
                SOLICITATION OF AN OFFER TO BUY ANY SECURITIES.
 
    Stockholders of Cognizant with inquiries related to the Distribution should
contact First Chicago Trust Company of New York, the Distribution Agent for the
Distribution, at 1-800-519-3111 or the Vice President-- Investor Relations of
Cognizant at (203) 222-4238.
 
          The date of this Information Statement is            , 1998.
<PAGE>
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                                                                PAGE
                                                                                                                -----
<S>                                                                                                          <C>
QUESTIONS AND ANSWERS ABOUT THE DISTRIBUTION AND RELATED MATTERS...........................................           1
INFORMATION STATEMENT SUMMARY..............................................................................           3
FORWARD-LOOKING STATEMENTS.................................................................................          12
RISK FACTORS...............................................................................................          13
THE DISTRIBUTION...........................................................................................          19
RELATIONSHIP BETWEEN IMS HEALTH AND NIELSEN MEDIA RESEARCH AFTER THE DISTRIBUTION..........................          24
DIVIDEND POLICIES..........................................................................................          29
IMS HEALTH (ACCOUNTING SUCCESSOR TO COGNIZANT) CAPITALIZATION..............................................          30
IMS HEALTH (ACCOUNTING SUCCESSOR TO COGNIZANT) SELECTED FINANCIAL DATA.....................................          31
IMS HEALTH (ACCOUNTING SUCCESSOR TO COGNIZANT) UNAUDITED CONSOLIDATED PRO FORMA FINANCIAL STATEMENTS.......          32
IMS HEALTH (ACCOUNTING SUCCESSOR TO COGNIZANT) MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
  AND RESULTS OF OPERATIONS................................................................................          36
IMS HEALTH BUSINESS........................................................................................          45
IMS HEALTH MANAGEMENT AND EXECUTIVE COMPENSATION...........................................................          54
IMS HEALTH SECURITY OWNERSHIP BY CERTAIN BENEFICIAL OWNERS AND MANAGEMENT..................................          62
DESCRIPTION OF IMS HEALTH CAPITAL STOCK....................................................................          65
NIELSEN MEDIA RESEARCH CAPITALIZATION......................................................................          73
NIELSEN MEDIA RESEARCH SELECTED FINANCIAL DATA.............................................................          74
NIELSEN MEDIA RESEARCH UNAUDITED CONSOLIDATED PRO FORMA FINANCIAL STATEMENTS...............................          75
NIELSEN MEDIA RESEARCH MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
  OPERATIONS...............................................................................................          78
NIELSEN MEDIA RESEARCH BUSINESS............................................................................          82
NIELSEN MEDIA RESEARCH MANAGEMENT AND EXECUTIVE COMPENSATION...............................................          90
NIELSEN MEDIA RESEARCH SECURITY OWNERSHIP BY CERTAIN BENEFICIAL OWNERS AND MANAGEMENT......................          94
DESCRIPTION OF NIELSEN MEDIA RESEARCH CAPITAL STOCK........................................................          95
AVAILABLE INFORMATION......................................................................................         103
REPORTS OF IMS HEALTH......................................................................................         103
INDEX TO FINANCIAL STATEMENTS..............................................................................         F-1
</TABLE>
<PAGE>
                             QUESTIONS AND ANSWERS
                   ABOUT THE DISTRIBUTION AND RELATED MATTERS
 
Q1: WHAT IS THE DISTRIBUTION?
 
A: The Distribution is the method by which Cognizant Corporation will be
    separated into two publicly traded companies: (i) IMS HEALTH, the leading
    global provider of information solutions to the pharmaceutical and
    healthcare industries and (ii) Nielsen Media Research, the leader in
    television audience measurement services in North America. Pursuant to the
    Distribution, Cognizant will distribute to its stockholders in a tax-free
    dividend one share of IMS HEALTH Common Stock for each share of Cognizant
    Common Stock held. Immediately after the Distribution, Cognizant's
    stockholders will still own all of Cognizant's current businesses, but they
    will own them as two separate investments rather than as a single
    investment.
 
Q2: WHAT IS IMS HEALTH?
 
A: IMS HEALTH is a new company the businesses of which will include: IMS, the
    leading global supplier of information and decision-support services to the
    pharmaceutical and healthcare industries; Erisco, a leading supplier of
    software-based administrative and analytical solutions to the managed care
    industry; Enterprises, a venture capital unit focused on investments in
    emerging healthcare businesses; Cognizant Technology Solutions, a provider
    of software application development and maintenance services and Year 2000
    and Eurocurrency compliance services; and an equity investment in Gartner
    Group, the leading supplier of research and analysis to the information
    technology industry.
 
Q3: WHAT IS NIELSEN MEDIA RESEARCH?
 
A: Nielsen Media Research is the leading source of television audience
    measurement services in North America, providing audience estimates for
    national and local television programming sources, including broadcast
    networks, cable networks, syndicators and local television stations. Since
    after the Distribution Cognizant's only business will be the Nielsen Media
    Research business, at the time of the Distribution Cognizant will change its
    name to Nielsen Media Research, Inc.
 
Q4: WHY IS COGNIZANT SEPARATING ITS BUSINESSES?
 
A: Cognizant believes that separating its businesses in the Distribution will
    allow IMS HEALTH and Nielsen Media Research to pursue opportunities that
    will improve their competitive position, enhance their valuation and create
    wealth for stockholders. Cognizant believes the separation will enhance
    management focus on the businesses, allowing corporate policies and
    strategies to be tailored to particular needs. Cognizant also believes the
    separation will facilitate IMS HEALTH's ability to pursue acquisition and
    growth opportunities and will lead to better investor understanding of the
    different businesses.
 
Q5: HAS COGNIZANT DONE THIS BEFORE?
 
A: Cognizant is experienced in effecting spin-off transactions, as Cognizant
    itself is the product of a spin-off from The Dun & Bradstreet Corporation in
    November 1996. Since that spin-off, Cognizant has made significant progress
    in pursuing its strategic goals and objectives, and the proposed spin-off
    will allow it to continue that progress.
 
Q6: WHAT IS THE TAX EFFECT OF THE DISTRIBUTION?
 
A: The Distribution is the most tax-efficient means of separating Cognizant's
    businesses. Cognizant has applied for a ruling from the Internal Revenue
    Service that for Federal income tax purposes the Distribution of the shares
    of IMS HEALTH Common Stock to Cognizant stockholders will be tax-free to
    Cognizant and its stockholders.
 
                                       1
<PAGE>
Q7: WHAT WILL COGNIZANT STOCKHOLDERS RECEIVE IN THE DISTRIBUTION?
 
A: In the Distribution, Cognizant stockholders will receive one share of IMS
    HEALTH Common Stock, and an associated Right under IMS HEALTH's Shareholder
    Rights Plan, for each share of Cognizant Common Stock they own. Immediately
    after the Distribution, Cognizant's stockholders will still own their shares
    of Cognizant Common Stock and the same stockholders will still own all of
    Cognizant's businesses, but they will own them as two separate investments
    rather than as a single investment. After the Distribution, certificates
    representing the "old" Cognizant Common Stock will represent such
    stockholders' interests in the Nielsen Media Research business and
    certificates representing IMS HEALTH Common Stock stockholders receive in
    the Distribution will represent their interests in the IMS HEALTH
    businesses.
 
Q8: WHAT HAPPENS TO COGNIZANT SHARES AFTER THE DISTRIBUTION?
 
A: Shares of Cognizant Common Stock will represent ownership of the Nielsen
    Media Research business after the Distribution. Cognizant stock certificates
    will still be valid after Cognizant changes its name to Nielsen Media
    Research, Inc.
 
Q9: WHAT DOES A COGNIZANT STOCKHOLDER NEED TO DO NOW?
 
A: Cognizant stockholders do not need to take any action. The approval of the
    Cognizant stockholders is not required to effect the Distribution and
    Cognizant is not seeking a proxy from any stockholders. COGNIZANT
    STOCKHOLDERS SHOULD NOT SEND IN THEIR COGNIZANT SHARE CERTIFICATES.
    Cognizant stockholders will automatically receive their shares of IMS HEALTH
    Common Stock when the Distribution is effected.
 
Q10:WHERE CAN COGNIZANT STOCKHOLDERS GET MORE INFORMATION?
 
A: Cognizant stockholders with additional questions related to the Distribution
    should contact First Chicago Trust Company of New York, the Distribution
    Agent for the Distribution, at Mail Suite 4694, P.O. Box 2536, Jersey City,
    NJ 06303-2536, 1-800-519-3111. Questions may also be directed to the Vice
    President--Investor Relations of Cognizant at 200 Nyala Farms, Westport,
    Connecticut 06880, (203) 222-4238.
 
                                       2
<PAGE>
                         INFORMATION STATEMENT SUMMARY
    THE FOLLOWING IS A SUMMARY OF CERTAIN INFORMATION CONTAINED IN THIS
INFORMATION STATEMENT. THIS SUMMARY IS INCLUDED FOR CONVENIENCE ONLY AND SHOULD
NOT BE CONSIDERED COMPLETE. THIS SUMMARY IS QUALIFIED IN ITS ENTIRETY BY THE
MORE DETAILED INFORMATION AND FINANCIAL STATEMENTS CONTAINED ELSEWHERE IN THIS
INFORMATION STATEMENT. IN THIS INFORMATION STATEMENT, UNLESS THE CONTEXT
OTHERWISE REQUIRES, "COGNIZANT" REFERS TO COGNIZANT CORPORATION PRIOR TO THE
DISTRIBUTION DATE AND "NIELSEN MEDIA RESEARCH" REFERS TO COGNIZANT'S SUBSIDIARY
WITH THAT NAME PRIOR TO THE DISTRIBUTION AND TO THE RENAMED COGNIZANT ON AND
AFTER THE DISTRIBUTION DATE. CERTAIN CAPITALIZED TERMS USED IN THIS SUMMARY ARE
DEFINED ELSEWHERE IN THIS INFORMATION STATEMENT.
         BUSINESSES OF COGNIZANT, IMS HEALTH AND NIELSEN MEDIA RESEARCH
 
<TABLE>
<S>                            <C>
Cognizant....................  Cognizant is a Delaware corporation that began operating as
                               an independent public company on November 1, 1996 as a
                               result of its spin-off from The Dun & Bradstreet Corporation
                               ("D&B"). Prior to that spin-off, Cognizant was owned by D&B.
                               Cognizant primarily is engaged in the integration of
                               information and technology to create business insight. In
                               the Distribution, Cognizant will be separated into two
                               publicly traded companies, IMS HEALTH and Nielsen Media
                               Research.
IMS HEALTH...................  IMS HEALTH is a newly created Delaware corporation, the
                               businesses of which will focus on information solutions to
                               the pharmaceutical and healthcare industries. Covering over
                               90 countries with over 7,200 employees worldwide, IMS
                               HEALTH's businesses will include those of I.M.S.
                               International ("IMS"), the leading global supplier of market
                               information and decision-support services to the
                               pharmaceutical and healthcare industries; Erisco, Inc.
                               ("Erisco"), a leading supplier of software-based
                               administrative and analytical solutions to the managed care
                               industry; Cognizant Enterprises, Inc. ("Enterprises"), a
                               venture capital unit focused on investments in emerging
                               healthcare businesses; Cognizant Technology Solutions
                               Corporation ("CTS"), a provider of software application
                               development and maintenance services and Year 2000 and
                               Eurocurrency compliance services; SSJ K.K. ("Super Systems
                               Japan"), an entity based in Japan which markets financial
                               application software products and services tailored for the
                               Japanese market; and an equity investment in Gartner Group,
                               Inc. ("Gartner"), the leading supplier of research and
                               analysis to the information technology industry
                               (collectively, the "IMS HEALTH Business").
                               Robert E. Weissman is currently Chairman and Chief Executive
                               Officer of Cognizant and Chairman and Chief Executive
                               Officer of IMS HEALTH. Mr. Weissman will resign from such
                               positions at Cognizant effective upon the Distribution Date;
                               however, he will continue as a director of Cognizant (which
                               will be renamed Nielsen Media Research, Inc. as described
                               below) after the Distribution. The Board of Directors of IMS
                               HEALTH will be composed of certain persons who are currently
                               directors of Cognizant. See "IMS HEALTH Management and
                               Executive Compensation--IMS HEALTH Board of Directors". In
                               addition to Mr. Weissman, the other executive officers of
                               IMS HEALTH will be drawn from the current management of
</TABLE>
 
                                       3
<PAGE>
<TABLE>
<S>                            <C>
                               Cognizant or its subsidiaries. See "IMS HEALTH Management
                               and Executive Compensation--IMS HEALTH Executive Officers".
Nielsen Media Research.......  Nielsen Media Research is the leading source of television
                               audience measurement services in North America. As a result
                               of the Distribution, the television audience measurement
                               services business of Nielsen Media Research (the "Nielsen
                               Media Research Business") will remain with Cognizant, and at
                               the time of the Distribution, Cognizant will change its name
                               to Nielsen Media Research, Inc.
                               William G. Jacobi is currently Chairman of Nielsen Media
                               Research and will be the Chairman of Nielsen Media Research
                               after the Distribution. John A. Dimling is currently
                               President and Chief Operating Officer of Nielsen Media
                               Research and will be President and Chief Executive Officer
                               of Nielsen Media Research after the Distribution. The
                               directors of Nielsen Media Research will be composed of
                               certain persons who are currently directors of Cognizant and
                               certain persons who are not currently directors of
                               Cognizant. See "Nielsen Media Research Management and
                               Executive Compensation--Nielsen Media Research Board of
                               Directors". In addition to Mr. Dimling, the other executive
                               officers of Nielsen Media Research will be drawn primarily
                               from the current management of Nielsen Media Research. See
                               "Nielsen Media Research Management and Executive
                               Compensation--Nielsen Media Research Executive Officers".
                                     THE DISTRIBUTION
Form of Transaction;
  Basis of Presentation......  The Distribution is the method by which Cognizant will be
                               separated into two publicly traded companies, IMS HEALTH and
                               Nielsen Media Research. In the Distribution, Cognizant will
                               distribute to its stockholders shares of IMS HEALTH Common
                               Stock, which will represent a continuing interest in
                               Cognizant's healthcare information and related businesses to
                               be conducted by IMS HEALTH. After the Distribution,
                               Cognizant's only business will be the Nielsen Media Research
                               television audience measurement services business, and the
                               shares of Cognizant Common Stock held by Cognizant
                               stockholders will represent a continuing ownership interest
                               in that business. At the time of the Distribution, Cognizant
                               will change its name to Nielsen Media Research, Inc. From
                               and after the Distribution Date, Cognizant Common Stock will
                               therefore become "Nielsen Media Research Common Stock".
                               Stockholders should note that notwithstanding the legal form
                               of the Distribution described above whereby Cognizant
                               expects to spin off IMS HEALTH, because of the relative
                               significance of the IMS HEALTH Business to Cognizant, IMS
                               HEALTH will be treated as the "accounting successor" to
                               Cognizant for financial reporting purposes. Therefore, the
                               historical financial information for IMS HEALTH included
                               herein is that of Cognizant and does not currently reflect
                               the separation of the IMS HEALTH Business from the Nielsen
</TABLE>
 
                                       4
<PAGE>
<TABLE>
<S>                            <C>
                               Media Research Business which will occur through the
                               Distribution. Upon approval of the plan of Distribution, the
                               historical financial statements of IMS HEALTH as accounting
                               successor to Cognizant will be restated to present Nielsen
                               Media Research as a "discontinued operation" for accounting
                               purposes.
Shares to be Distributed.....  The Distribution will be made to holders of record as of the
                               close of business on the Record Date of issued and
                               outstanding shares of Cognizant Common Stock. Each holder of
                               Cognizant Common Stock on the Record Date will receive as a
                               dividend one share of IMS HEALTH Common Stock for every
                               share of Cognizant Common Stock held. Based on the
                               shares of Cognizant Common Stock outstanding as of
                                            , 1998, the Distribution would consist of
                                     shares of IMS HEALTH Common Stock.
                               The Board of Directors of IMS HEALTH will adopt a
                               stockholder rights plan (the "IMS HEALTH Rights Plan") prior
                               to the Distribution. Certificates evidencing shares of IMS
                               HEALTH Common Stock issued in the Distribution will
                               therefore represent the same number of IMS HEALTH Rights (as
                               defined below) issued under the IMS HEALTH Rights Plan. See
                               "Description of IMS HEALTH Capital Stock--IMS HEALTH Rights
                               Plan". Unless the context otherwise requires, references
                               herein to the IMS HEALTH Common Stock include the related
                               IMS HEALTH Rights.
                               Cognizant stockholders will not have to make any payment or
                               surrender or exchange certificates representing shares of
                               Cognizant Common Stock in order to receive their pro rata
                               share of the Distribution. No vote of holders of Cognizant
                               Common Stock is required or sought in connection with the
                               Distribution.
Record Date..................  The Record Date is              , 1998. In order to be
                               entitled to receive shares of IMS HEALTH Common Stock in the
                               Distribution, holders of shares of Cognizant Common Stock
                               must be stockholders as of the close of business on the
                               Record Date.
Distribution Date............  The "Distribution Date" is presently expected to be on or
                               about July 1, 1998.
Distribution Agent...........  First Chicago Trust Company of New York will be the
                               Distribution Agent (the "Distribution Agent") for the
                               Distribution.
Federal Income Tax
  Consequences of the
  Distribution...............  Cognizant has requested a ruling from the Internal Revenue
                               Service to the effect that the Distribution will be tax-free
                               for Federal income tax purposes. Cognizant stockholders will
                               apportion their tax basis in Cognizant Common Stock held
                               immediately before the Distribution Date among such
                               Cognizant Common Stock (which will represent each such
                               stockholder's interest in Nielsen Media Research after the
                               Distribution) and IMS HEALTH Common Stock received in the
                               Distribution, based on the relative fair market values of
                               the Cognizant Common Stock and the IMS HEALTH Common Stock
                               as of the Distribution Date. Cognizant will provide
                               appropriate information to
</TABLE>
 
                                       5
<PAGE>
<TABLE>
<S>                            <C>
                               each holder of record of Cognizant Common Stock as of the
                               close of business on the Record Date concerning the basis
                               allocation. See "The Distribution--Federal Income Tax
                               Consequences of the Distribution".
Stock Exchange Listing and
  Trading....................  Prior to the date hereof, there has not been any established
                               trading market for the IMS HEALTH Common Stock. Application
                               will be made for listing the shares of IMS HEALTH Common
                               Stock on the NYSE under the symbol "RX", and trading is
                               expected to commence on a "when-issued" basis prior to the
                               Distribution Date. On the first NYSE trading day following
                               the Distribution Date, "when-issued" trading in respect of
                               the IMS HEALTH Common Stock will end and "regular-way"
                               trading will begin. See "The Distribution--Listing and
                               Trading of IMS HEALTH Common Stock and Nielsen Media
                               Research Common Stock".
                               Nielsen Media Research Common Stock (I.E. the "old"
                               Cognizant Common Stock) will continue to trade on the NYSE
                               after the Distribution Date, but the symbol under which it
                               trades will change from "CZT" to "NSN". However, because of
                               the significant changes that will take place to Cognizant as
                               a result of the Distribution, the trading market for Nielsen
                               Media Research Common Stock after the Distribution may be
                               significantly different from that for Cognizant Common Stock
                               prior to the Distribution. See "The Distribution-- Listing
                               and Trading of IMS HEALTH Common Stock and Nielsen Media
                               Research Common Stock".
Relationship Between
  IMS HEALTH and
  Nielsen Media Research
  After the Distribution.....  After the Distribution, neither IMS HEALTH nor Nielsen Media
                               Research will have any ownership interest in the other,
                               except as set forth under "Relationship Between IMS HEALTH
                               and Nielsen Media Research After the Distribution", and each
                               of IMS HEALTH and Nielsen Media Research will be an
                               independent public company. IMS HEALTH and Cognizant (which
                               will become Nielsen Media Research at the time of the
                               Distribution) will enter into certain agreements governing
                               the relationship between IMS HEALTH and Nielsen Media
                               Research subsequent to the Distribution and providing for
                               the allocation of tax, employee benefits and certain other
                               assets and liabilities and obligations arising from periods
                               prior to the Distribution, including contingent liabilities
                               relating to certain litigation. In addition, there will be
                               individuals on the Boards of Directors of IMS HEALTH and
                               Nielsen Media Research who will also serve on the Board of
                               Directors of the other company. See "Relationship Between
                               IMS HEALTH and Nielsen Media Research After the
                               Distribution".
</TABLE>
 
                                       6
<PAGE>
<TABLE>
<S>                            <C>
Certain Indebtedness and
  Minority-Interest
  Financing..................  In connection with the Distribution, Cognizant will borrow
                               $300 million, the proceeds of which will be used to repay
                               existing intercompany indebtedness to certain entities
                               included in IMS HEALTH. This debt will be an obligation of
                               Nielsen Media Research after the Distribution. Upon or soon
                               after the Distribution, IMS HEALTH intends to borrow $50
                               million in short-term debt. IMS HEALTH also will retain $100
                               million in pre-existing minority-interest financing. See
                               "The Distribution--Nielsen Media Research and IMS HEALTH
                               Indebtedness and Minority-Interest Financing".
Dividend Policies............  The payment and level of cash dividends by IMS HEALTH and
                               Nielsen Media Research after the Distribution will be
                               subject to the discretion of the IMS HEALTH Board of
                               Directors and the Nielsen Media Research Board of Directors,
                               respectively. It is anticipated that IMS HEALTH will
                               initially pay a dividend equal to Cognizant's current
                               annualized dividend of $0.12 per share. Nielsen Media
                               Research does not anticipate paying a dividend in the near
                               future. Dividend decisions will be based on, and affected
                               by, a number of factors, including the respective operating
                               results and financial requirements of IMS HEALTH and Nielsen
                               Media Research on a stand-alone basis as well as applicable
                               legal and contractual restrictions. See "Dividend Policies".
Antitakeover Provisions......  At the time of the Distribution, the Restated Certificate of
                               Incorporation and Amended and Restated By-laws of each of
                               IMS HEALTH and Nielsen Media Research will contain
                               provisions that may have the effect of discouraging an
                               acquisition of control of IMS HEALTH or Nielsen Media
                               Research, respectively, not approved by their respective
                               Board of Directors. Such provisions may also have the effect
                               of discouraging third parties from making proposals
                               involving an acquisition or change of control of IMS HEALTH
                               or Nielsen Media Research, although such proposals, if made,
                               might be considered desirable by a majority of the
                               stockholders of IMS HEALTH or Nielsen Media Research, as the
                               case may be. Such provisions could further have the effect
                               of making it more difficult for third parties to cause the
                               replacement of the Board of Directors of IMS HEALTH or
                               Nielsen Media Research. These provisions have been designed
                               to enable each of IMS HEALTH and Nielsen Media Research to
                               develop its businesses and foster its long-term growth
                               without disruptions caused by the threat of a takeover not
                               deemed by its Board of Directors to be in the best interest
                               of IMS HEALTH or Nielsen Media Research, as the case may be,
                               and their respective stockholders. Certain provisions of the
                               Distribution Agreement to be entered into between IMS HEALTH
                               and Cognizant (which will change its name to Nielsen Media
                               Research, Inc. at the time of the Distribution) may also
                               have the effect of discouraging third parties from making
                               proposals involving an acquisition or change of control of
                               IMS HEALTH or Nielsen Media Research. See "Relationship
                               Between IMS HEALTH and Nielsen Media Research After the
                               Distribution--Distribution Agreement".
</TABLE>
 
                                       7
<PAGE>
<TABLE>
<S>                            <C>
                               At the time of the Distribution, each of IMS HEALTH and
                               Nielsen Media Research will have stockholder rights plans.
                               These stockholder rights plans are designed to protect
                               stockholders in the event of an unsolicited offer or other
                               takeover tactics which, in the opinion of the relevant Board
                               of Directors, could impair its ability to represent
                               stockholder interests. The provisions of the stockholder
                               rights plans may render an unsolicited takeover of IMS
                               HEALTH or Nielsen Media Research, as the case may be, more
                               difficult or less likely to occur or might prevent such a
                               takeover. See "Description of IMS HEALTH Capital Stock--IMS
                               HEALTH Rights Plan" and "Description of Nielsen Media
                               Research Common Stock--Nielsen Media Research Rights Plan".
                               Each of IMS HEALTH and Nielsen Media Research will be
                               subject to provisions of Delaware corporate law which may
                               restrict certain business combination transactions. See
                               "Description of IMS HEALTH Capital Stock--Delaware General
                               Corporation Law" and "Description of Nielsen Media Research
                               Capital Stock--Delaware General Corporation Law".
                               See also "Description of IMS HEALTH Capital
                               Stock--Provisions of IMS HEALTH Restated Certificate of
                               Incorporation and Amended and Restated By-laws Affecting
                               Change in Control" and "Description of Nielsen Media
                               Research Capital Stock--Provisions of Nielsen Media Research
                               Restated Certificate of Incorporation and Amended and
                               Restated By-laws Affecting Change in Control".
Risk Factors.................  Stockholders should carefully consider the matters discussed
                               under the section entitled "Risk Factors" in this
                               Information Statement.
Recent Developments..........  On March 23, 1998, Cognizant announced the signing of
                               definitive agreements to acquire Walsh International Inc.
                               ("Walsh"), which develops and markets leading-edge sales
                               force automation systems for pharmaceutical companies, and
                               Pharmaceutical Marketing Services Inc. ("PMSI"), which
                               provides information services to pharmaceutical and
                               healthcare companies in the U.S., Europe and Japan
                               (collectively, the "Acquisitions"). Under terms of the
                               agreements, Walsh shareholders will receive .3041 shares of
                               Cognizant Common Stock per Walsh share (or, based on a
                               Cognizant share price of $51.792, consideration of
                               approximately $167 million), and PMSI shareholders will
                               receive .2800 shares of Cognizant Common Stock per PMSI
                               share (or, based on a Cognizant share price of $51.792,
                               consideration of approximately $180 million). The number of
                               shares of Cognizant Common Stock to be issued in connection
                               with each of the Acquisitions is subject to a collar
                               adjustment based on the price of Cognizant Common Stock
                               during a period prior to the closing of each Acquisition.
                               Currently Walsh and PMSI have approximately 10.6 million and
                               approximately 12.4 million shares outstanding, respectively.
                               Cognizant expects to issue approximately 6.7 million shares
                               from treasury stock to consummate the Acquisitions. In the
                               event the Acquisitions are not completed prior to the Record
                               Date, Walsh and PMSI shareholders will receive, in lieu of
                               Cognizant Common Stock, IMS HEALTH Common Stock pursuant to
                               a formula
</TABLE>
 
                                       8
<PAGE>
<TABLE>
<S>                            <C>
                               designed to recalibrate the collar computations based on the
                               relative value of IMS HEALTH to the total value of IMS
                               HEALTH and Nielsen Media Research following the
                               Distribution. The Acquisitions, which have been
                               independently authorized by the Cognizant, Walsh and PMSI
                               Boards of Directors, are subject to approval by Walsh and
                               PMSI shareholders, the receipt of regulatory and other
                               required approvals and consents and customary closing
                               conditions. Each of the Acquisitions is an independent
                               transaction and neither is conditioned upon the consummation
                               of the other or upon the consummation of the Distribution.
                               In connection with the Distribution, Walsh and PMSI will
                               become part of IMS HEALTH.
                               On April 9, 1998, CTS filed a registration statement with
                               the Securities and Exchange Commission ("the SEC") with
                               respect to an underwritten offering of 2,917,000 shares of
                               Class A Common Stock, par value $0.01 per share, of CTS
                               (3,354,550 if the underwriters' over-allotment option
                               granted by Cognizant is exercised in full). Of such shares,
                               2,500,000 are to be offered by CTS and 417,000 shares are to
                               be offered by Cognizant. Following the offering, Cognizant
                               will own 66.7% of the outstanding common stock of CTS and
                               approximately 95.3% of the combined voting power of CTS's
                               outstanding common stock. The initial offering price is
                               estimated to be between $11.00 and $13.00 per share. A
                               portion of the proceeds to be received by CTS in the
                               offering will be used to repay an intercompany balance. The
                               registration statement has not become effective under the
                               Securities Act of 1933, as amended (the "Securities Act").
                               If the offering is not completed prior to the Distribution
                               Date, IMS HEALTH will be the selling stockholder in the
                               offering. See "IMS HEALTH Business-- Recent Developments".
</TABLE>
 
                                     * * *
    This Information Statement is being furnished by Cognizant solely to provide
information to stockholders of Cognizant who will receive IMS HEALTH Common
Stock in the Distribution and who will continue to own Nielsen Media Research
Common Stock immediately after the Distribution. It is not, and is not to be
construed as, an inducement or encouragement to buy or sell any securities of
Cognizant, IMS HEALTH or Nielsen Media Research. The information contained in
this Information Statement is believed by Cognizant and IMS HEALTH to be
accurate with respect to Cognizant, IMS HEALTH and Nielsen Media Research as of
the date set forth on the cover. Changes may occur after that date, and
Cognizant, IMS HEALTH and Nielsen Media Research will not update the information
except in the normal course of their respective public disclosure practices.
 
                                       9
<PAGE>
                                   IMS HEALTH
                      (ACCOUNTING SUCCESSOR TO COGNIZANT)
                             SUMMARY FINANCIAL DATA
    Notwithstanding the legal form of the Distribution, whereby Cognizant
expects to spin off IMS HEALTH, for accounting purposes the transaction is
accounted for as if Cognizant will spin off Nielsen Media Research. For
financial reporting purposes, the following financial information relates to IMS
HEALTH, the accounting successor to Cognizant. The financial data as of and for
all years ended December 31, are the audited financial statements of Cognizant,
which statements for 1997, 1996 and 1995 are contained elsewhere in this
Information Statement. The financial data as of and for the three months ended
March 31, 1998 and 1997 are unaudited. The historical financial information set
forth below relates to Cognizant. See "The Distribution--Form of Transaction;
Basis of Presentation". The following financial data should also be read in
conjunction with, and is qualified in its entirety by, the information set forth
under "IMS HEALTH (Accounting Successor to Cognizant) Selected Financial Data"
and "IMS HEALTH (Accounting Successor to Cognizant) Management's Discussion and
Analysis of Financial Condition and Results of Operations" and Cognizant's
Consolidated Financial Statements and Notes thereto appearing elsewhere in this
Information Statement.
<TABLE>
<CAPTION>
                                               THREE MONTHS ENDED
                                              AND AS OF MARCH 31,               YEAR ENDED AND AS OF DECEMBER 31,
                                         ------------------------------  -----------------------------------------------
                                              1998            1997        1997(1)     1996(2)     1995(3)      1994(4)
                                         --------------  --------------  ----------  ----------  ----------  -----------
<S>                                      <C>             <C>             <C>         <C>         <C>         <C>
                                          (UNAUDITED)     (UNAUDITED)
 
<CAPTION>
                                                         ($ AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                      <C>             <C>             <C>         <C>         <C>         <C>
INCOME STATEMENT DATA:
Operating Revenue(6)...................    $               $  315,576    $1,418,153  $1,730,596  $1,542,340   $1,257,415
Income Before Cumulative Effect of
  Accounting Changes...................    $               $   52,905    $  312,350  $  195,451  $   88,881   $ 146,405
Earnings Per Share of Common Stock on
  Income Before Cumulative Effect of
  Accounting Changes--Basic............    $               $     0.31    $     1.89  $     1.15  $     0.52   $    0.86
Earnings Per Share of Common Stock on
  Income Before Cumulative Effect of
  Accounting Changes--Diluted..........    $               $     0.31    $     1.86  $     1.15  $     0.52   $    0.85
BALANCE SHEET DATA:
Total Assets...........................    $               $1,405,430    $1,579,520  $1,874,982  $1,442,090   $1,331,038
Long-Term Debt.........................    $               $    3,463    $    2,912  $    3,736  $   10,485   $  15,484
 
<CAPTION>
 
                                           1993(5)
                                         -----------
<S>                                      <C>
 
<S>                                      <C>
INCOME STATEMENT DATA:
Operating Revenue(6)...................   $1,039,259
Income Before Cumulative Effect of
  Accounting Changes...................   $ 108,857
Earnings Per Share of Common Stock on
  Income Before Cumulative Effect of
  Accounting Changes--Basic............   $      --
Earnings Per Share of Common Stock on
  Income Before Cumulative Effect of
  Accounting Changes--Diluted..........   $      --
BALANCE SHEET DATA:
Total Assets...........................   $1,158,764
Long-Term Debt.........................   $   5,374
</TABLE>
 
- ------------------------
(1) Income before Cumulative Effect of Accounting Changes in 1997 includes an
    unrealized gain on its investment in Gartner of $10,664 and gains from
    dispositions-net of $6,818.
(2) Income before Cumulative Effect of Accounting Changes in 1996 includes a
    one-time acquisition-related charge of $32,778 related to Gartner's
    acquisition of J3 Learning Corporation and gains from dispositions-net of
    $112.
(3) Income before Cumulative Effect of Accounting Changes in 1995 includes a
    non-recurring charge of $49,268, an incremental provision of postemployment
    benefits of $17,778, restructuring expense of $7,002 and gains from
    dispositions-net of $8,269.
(4) Income before Cumulative Effect of Accounting Changes in 1994 includes
    restructuring expense of $7,957 and a gain from disposition of $12,806.
(5) Income before Cumulative Effect of Accounting Changes in 1993 includes
    restructuring expense of $46,408 and a gain from disposition of $13,676.
(6) Operating Revenue for the three months ended March 31, 1998 and 1997 and the
    year ended December 31, 1997 reflects Gartner on the equity method of
    accounting; accordingly no Gartner revenue is reflected. Operating Revenue
    for the years ended December 31, 1996, 1995, 1994 and 1993 reflects Gartner
    on a consolidated basis.
 
                                       10
<PAGE>
                 NIELSEN MEDIA RESEARCH SUMMARY FINANCIAL DATA
    The following data are qualified in their entirety by the financial
statements of Nielsen Media Research and other information contained elsewhere
in this Information Statement. The financial data as of December 31, 1997 and
1996, and for the years ended December 31, 1997, 1996 and 1995, have been
derived from the audited financial statements of Nielsen Media Research
contained elsewhere in this Information Statement. The financial data as of
March 31, 1998 and 1997, and December 31, 1994 and 1993, for the three months
ended March 31, 1998 and 1997 and for the years ended December 31, 1994 and
1993, are unaudited. The historical financial statements of Nielsen Media
Research contained in this Information Statement are presented as if Nielsen
Media Research were a separate entity for all periods presented. The following
financial data should be read in conjunction with the information set forth
under "Nielsen Media Research Selected Financial Data" and "Nielsen Media
Research Management's Discussion and Analysis of Financial Condition and Results
of Operations" and Nielsen Media Research's Consolidated Financial Statements
and Notes thereto appearing elsewhere in this Information Statement.
<TABLE>
<CAPTION>
                                        THREE MONTHS ENDED
                                        AND AS OF MARCH 31,               YEAR ENDED AND AS OF DECEMBER 31,
                                       ---------------------  ----------------------------------------------------------
                                         1998        1997        1997        1996        1995        1994        1993
                                       ---------  ----------  ----------  ----------  ----------  ----------  ----------
<S>                                    <C>        <C>         <C>         <C>         <C>         <C>         <C>
                                            (UNAUDITED)                                                (UNAUDITED)
 
<CAPTION>
                                                        ($ AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                    <C>        <C>         <C>         <C>         <C>         <C>         <C>
INCOME STATEMENT DATA:
Operating Revenue....................  $          $   86,271  $  358,594  $  319,404  $  288,652  $  250,303  $  209,894
Net Income...........................  $          $   12,730  $   52,475  $   47,605  $   40,412  $   30,115  $   19,661
Earnings Per Share of Common
  Stock--Basic.......................  $          $     0.07  $     0.32  $     0.28  $     0.24  $     0.18  $       --
Earnings Per Share of Common
  Stock--Diluted.....................  $          $     0.07  $     0.32  $     0.28  $     0.24  $     0.18  $       --
BALANCE SHEET DATA:
Total Assets.........................  $          $  177,200  $  192,434  $  170,331  $  134,521  $  138,842  $   97,831
Long-Term Debt.......................  $          $       --  $       --  $       --  $       78  $      244  $      411
</TABLE>
 
                                       11
<PAGE>
                           FORWARD-LOOKING STATEMENTS
 
    This Information Statement and other materials filed or to be filed by
Cognizant (which will become Nielsen Media Research at the time of the
Distribution) and IMS HEALTH with the SEC, as well as information included in
oral statements or other written statements made or to be made by Cognizant and
IMS HEALTH, contain statements which constitute "forward-looking statements"
within the meaning of the Private Securities Litigation Reform Act of 1995.
These statements appear in a number of places in this document and include, but
are not limited to, all statements relating to plans for future growth and other
business development activities as well as capital expenditures, financing
sources and the effects of regulation and competition, the terms of the
Distribution and all other statements regarding the intent, plans, beliefs or
expectations of the parties or their directors or officers. Stockholders are
cautioned that such forward-looking statements are not assurances of future
performance or events and involve risks and uncertainties that could cause
actual results and developments to differ materially from those covered in such
forward-looking statements. These risks and uncertainties include, but are not
limited to, risks associated with operating on a global basis, including
fluctuations in the value of foreign currencies relative to the U.S. dollar, and
the ability to successfully hedge such risks; to the extent IMS HEALTH or
Nielsen Media Research seek growth through acquisition, the ability to identify
and consummate acquisitions on satisfactory terms; the ability to develop new or
advanced technologies and systems for their businesses on a cost-effective
basis; the ability to successfully achieve estimated effective tax rates and
corporate overhead levels; competition, particularly in the markets for
pharmaceutical information and audience measurement services; regulatory and
legislative initiatives, particularly in the area of medical privacy; the
ability to timely and cost-effectively resolve any problems associated with the
Year 2000 issue; leverage and debt service (including sensitivity to
fluctuations in interest rates); compliance with covenants in loan agreements;
the ability to obtain future financing on satisfactory terms; deterioration in
economic conditions, particularly in the pharmaceutical, healthcare, media, or
other industries in which customers operate; conditions in the securities
markets which may affect the value or liquidity of portfolio investments; and
the final allocation of assets and liabilities between IMS HEALTH and Nielsen
Media Research. Consequently, all the forward-looking statements contained in
this Information Statement are qualified by the information contained or
incorporated herein, including, but not limited to, the information contained
under this heading and in "Information Statement Summary--The
Distribution--Recent Developments", "Risk Factors", "The Distribution", "IMS
HEALTH (Accounting Successor to Cognizant) Capitalization", "IMS HEALTH
(Accounting Successor to Cognizant) Management's Discussion and Analysis of
Financial Condition and Results of Operations", "IMS HEALTH Business", "Nielsen
Media Research Capitalization", "Nielsen Media Research Management's Discussion
and Analysis of Financial Condition and Results of Operations" and "Nielsen
Media Research Business". Neither Cognizant (which will become Nielsen Media
Research at the time of the Distribution) nor IMS HEALTH has any obligation to
publicly release any revision to any forward-looking statement contained or
incorporated herein to reflect any future events or occurrences.
 
                                       12
<PAGE>
                                  RISK FACTORS
 
RISKS RELATING TO IMS HEALTH AND NIELSEN MEDIA RESEARCH
 
    POTENTIAL TAXATION
 
    Cognizant has applied for a ruling from the Internal Revenue Service to the
effect that, among other things, the Distribution will qualify as a tax-free
spin-off under Section 355 of the Internal Revenue Code of 1986, as amended (the
"Internal Revenue Code").
 
    The Internal Revenue Service ruling will be based on certain factual
representations made by Cognizant. If such factual representations were
incorrect in a material respect, such ruling could become invalid. Cognizant is
not aware of any facts or circumstances which would cause such representations
to be incorrect in a material respect. Each of Cognizant (which will become
Nielsen Media Research at the time of the Distribution) and IMS HEALTH will
agree in the Distribution Agreement to certain restrictions on its future
actions to provide further assurances that Section 355 of the Internal Revenue
Code will apply to the Distribution. See "Relationship Between IMS HEALTH and
Nielsen Media Research After the Distribution".
 
    If the Distribution were not to qualify under Section 355 of the Internal
Revenue Code, then, in general, a corporate tax (which would be very
substantial) would be payable by the consolidated group, of which Cognizant is
the common parent. In addition, under the consolidated return rules, each member
of the consolidated group would be jointly and severally liable for such tax
liability. If the Distribution occurred and it were not to qualify under Section
355 of the Internal Revenue Code, the resulting tax liability would have a
material adverse effect on the financial position, results of operations and
cash flows of each of IMS HEALTH and Nielsen Media Research. Cognizant estimates
that the aggregate shared tax liability in this regard of IMS HEALTH and Nielsen
Media Research would be in the range of approximately $2.5 to $3.0 billion. See
"The Distribution--Federal Income Tax Consequences of the Distribution".
 
    Moreover, if the Distribution were not to qualify under Section 355 of the
Internal Revenue Code, each Cognizant stockholder receiving shares of IMS HEALTH
Common Stock in the Distribution would be treated as if such stockholder had
received a taxable distribution in an amount equal to the fair market value of
the IMS HEALTH Common Stock received. See "The Distribution--Federal Income Tax
Consequences of the Distribution".
 
    YEAR 2000
 
    Many existing computer systems and software applications use two digits,
rather than four, to record years. Unless modified, such systems will not
properly record or interpret years after 1999, which could lead to business
disruptions (the "Year 2000 issue"). Each of IMS HEALTH and Nielsen Media
Research depends on systems and software both for its internal operations as
well as for the receipt of data used in its information products and the
transmission of those products to its customers. Cognizant began to address the
Year 2000 issue in 1996. IMS HEALTH and Nielsen Media Research expect to
complete upgrading or replacing affected programs during 1998, with testing to
be done during 1999. The two companies' expected costs of upgrading or replacing
substantially all affected programs and the date on which they expect to
complete Year 2000 compliance are based on management's best estimates, which
were derived utilizing numerous assumptions relating to future events.
 
    CERTAIN ANTITAKEOVER PROVISIONS
 
    At the time of the Distribution, the Restated Certificate of Incorporation
and Amended and Restated By-laws of each of IMS HEALTH and Nielsen Media
Research will contain provisions that may have the effect of discouraging an
acquisition of control of IMS HEALTH or Nielsen Media Research, respectively,
not approved by their respective Board of Directors. Such provisions may also
have the effect of
 
                                       13
<PAGE>
discouraging third parties from making proposals involving an acquisition or
change of control of IMS HEALTH or Nielsen Media Research, although such
proposals, if made, might be considered desirable by a majority of the
stockholders of IMS HEALTH or Nielsen Media Research, as the case may be. Such
provisions could further have the effect of making it more difficult for third
parties to cause the replacement of the Board of Directors of IMS HEALTH or
Nielsen Media Research. These provisions have been designed to enable each of
IMS HEALTH and Nielsen Media Research to develop its businesses and foster its
long-term growth without disruptions caused by the threat of a takeover not
deemed by its Board of Directors to be in the best interests of IMS HEALTH or
Nielsen Media Research, as the case may be, and their stockholders. Certain
provisions of the Distribution Agreement may also have the effect of
discouraging third parties from making proposals involving an acquisition or
change of control of IMS HEALTH or Nielsen Media Research. See "Relationship
Between IMS HEALTH and Nielsen Media Research After the
Distribution--Distribution Agreement".
 
    At the time of the Distribution, each of IMS HEALTH and Nielsen Media
Research will have a stockholder rights plan. These stockholder rights plans are
designed to protect stockholders in the event of an unsolicited offer and other
takeover tactics which, in the opinion of the relevant Board of Directors, could
impair its ability to represent stockholder interests. The provisions of these
stockholder rights plans may render an unsolicited takeover of IMS HEALTH or
Nielsen Media Research, as the case may be, more difficult or less likely to
occur or might prevent such a takeover. See "Description of IMS HEALTH Capital
Stock--IMS HEALTH Rights Plan" and "Description of Nielsen Media Research
Capital Stock-- Nielsen Media Research Rights Plan".
 
    Each of IMS HEALTH and Nielsen Media Research will be subject to the
provisions of Delaware corporate law which may restrict certain business
combination transactions. See "Description of IMS HEALTH Capital Stock--Delaware
General Corporation Law" and "Description of Nielsen Media Research Capital
Stock--Delaware General Corporation Law".
 
    LITIGATION
 
    On July 29, 1996, Information Resources, Inc. ("IRI") filed a complaint in
the United States District Court for the Southern District of New York, naming
as defendants D&B, A.C. Nielsen Company and IMS (the "IRI Action"). The
complaint alleges, among other things, various violations of the antitrust laws
and damages in excess of $350 million, which amount IRI has asked to be trebled
under the antitrust laws. IRI also seeks punitive damages in an unspecified
amount. In connection with such action, D&B, ACNielsen Corporation ("ACNielsen")
and Cognizant entered into an Indemnity and Joint Defense Agreement (the
"Indemnity and Joint Defense Agreement") pursuant to which ACNielsen agreed to
be responsible for any potential liabilities which may ultimately be incurred by
D&B or Cognizant as a result of such action, up to a maximum amount to be
determined by an independent investment bank if and when any such liabilities
are incurred. The determination of such maximum amount will be based on
ACNielsen's ability to satisfy such liabilities and remain financially viable,
subject to certain assumptions and limitations. However, Cognizant and D&B have
agreed that to the extent that ACNielsen is unable to satisfy any such
liabilities in full and remain financially viable, Cognizant and D&B will each
be responsible for 50% of the difference between the amount, if any, which may
be payable as a result of such litigation and the maximum amount which ACNielsen
is then able to pay as determined by such investment bank. Under the terms of
the Distribution Agreement dated as of October 28, 1996, among Cognizant, D&B
and ACNielsen (the "1996 Distribution Agreement"), pursuant to which shares of
Cognizant and ACNielsen were distributed to the stockholders of D&B (the "D&B
spin-off"), as a condition to the Distribution, IMS HEALTH and Nielsen Media
Research are required to undertake to be jointly and severally liable to D&B and
ACNielsen for Cognizant's obligations under the 1996 Distribution Agreement.
However, pursuant to the Distribution Agreement, IMS HEALTH and Nielsen Media
Research have agreed that, as between themselves, IMS HEALTH will assume 75%,
and Nielsen Media Research will assume 25%, of any payments to be made in
respect of the IRI Action under the Indemnity and Joint Defense Agreement or
 
                                       14
<PAGE>
otherwise, including any legal fees and expenses related thereto incurred in
1999 or thereafter. IMS HEALTH has agreed to be fully responsible for any legal
fees and expenses incurred during 1998. Nielsen Media Research's aggregate
liability to IMS HEALTH for payments in respect of the IRI Action and certain
other contingent liabilities shall not exceed $125 million. Management of
Nielsen Media Research and IMS HEALTH are unable to predict at this time the
final outcome of the IRI Action or whether the resolution of such matter could
materially affect Nielsen Media Research's or IMS HEALTH's respective results of
operations, cash flows or financial position.
 
RISKS RELATING TO IMS HEALTH
 
    ABSENCE OF PRIOR TRADING MARKET FOR THE IMS HEALTH COMMON STOCK
 
    Prior to the date hereof, there has not been any established trading market
for IMS HEALTH Common Stock. Application will be made to list the shares of IMS
HEALTH Common Stock on the NYSE under the symbol "RX", and trading is expected
to commence on a "when-issued" basis prior to the Distribution Date. See "The
Distribution--Listing and Trading of IMS HEALTH Common Stock and Nielsen Media
Research Common Stock".
 
    CHANGES IN TRADING PRICES OF IMS HEALTH COMMON STOCK
 
    There can be no assurance as to the prices at which the IMS HEALTH Common
Stock will trade before, on or after the Distribution Date. Until the IMS HEALTH
Common Stock is fully distributed and an orderly market develops in the IMS
HEALTH Common Stock, the price at which such stock trades may fluctuate
significantly and may be lower or higher than the price that would be expected
for a fully distributed issue. Prices for the IMS HEALTH Common Stock will be
determined in the marketplace and may be influenced by many factors, including
(i) the depth and liquidity of the market for IMS HEALTH Common Stock, (ii)
developments affecting the businesses of IMS HEALTH generally and the impact of
those factors referred to below in particular, (iii) investor perception of IMS
HEALTH and (iv) general economic and market conditions. Management expects that
the market will characterize IMS HEALTH Common Stock as a healthcare information
systems and services stock, which category of stock has historically experienced
relatively greater price volatility than broader market indices.
 
    NON-UNITED STATES OPERATIONS
 
    IMS HEALTH operates globally, deriving a significant portion of its revenues
and operating income in 1997 from non-U.S. operations. As a result, fluctuations
in the value of foreign currencies relative to the U.S. dollar may increase the
volatility of U.S. dollar-denominated operating results. IMS HEALTH's geographic
expansion in emerging markets such as Eastern Europe, Africa and Asia Pacific is
expected to continue. Emerging markets tend to be considerably less stable than
established markets which may further contribute to volatility in operating
results. In addition, IMS HEALTH is subject to the usual risks inherent in
carrying on business in certain countries outside the U.S., including possible
nationalization, expropriation, price controls or other restrictive government
actions. Management believes that the risk of nationalization or expropriation
is reduced because its basic service is the delivery of information, rather than
the production of products which require manufacturing facilities or use of
natural resources.
 
    ACQUISITIONS
 
    Although an important aspect of IMS HEALTH's business strategy is growth
through acquisitions, there can be no assurance that management of IMS HEALTH
will be able to identify and consummate acquisitions on satisfactory terms.
Furthermore, every acquisition will entail some degree of uncertainty and risk,
and even if consummated, may not produce the operating results or increases in
value over time which were expected at the time of acquisition.
 
                                       15
<PAGE>
    On March 23, 1998, Cognizant announced the signing of definitive agreements
to acquire Walsh and PMSI. Although they have been approved by the Boards of
Directors of Cognizant, Walsh and PMSI, the Acquisitions are still subject to
the approval of the Walsh and PMSI shareholders, the receipt of regulatory and
other required approvals and consents and customary closing conditions. In
addition, while management of IMS HEALTH believes that these acquisitions will
enhance IMS HEALTH's ability to compete globally in the healthcare sales and
marketing services industry, there can be no assurance that such expectations
will materialize.
 
    TECHNOLOGY
 
    IMS HEALTH competes in businesses which demand or sell sophisticated
information systems, software and other technology. The types of systems which
IMS HEALTH's businesses require or sell can be expected to be subject to
refinements as such systems and underlying technologies are upgraded and
advanced, and there can be no guarantee that as various systems and technologies
become outdated, IMS HEALTH will be able to replace them, to replace them as
quickly as IMS HEALTH's competition or to develop and market new and better
products and services in the future on a cost-effective basis.
 
    GARTNER GROUP, INC.
 
    The IMS HEALTH Business will include IMS HEALTH's ownership of a significant
block of the outstanding shares of Gartner, a publicly traded provider of
research and analysis of the computer hardware, software, communications and
related technology industries. In the third quarter of 1997, IMS HEALTH's voting
interest in Gartner fell below 50% based upon the exercise of Gartner employee
stock options and employee stock purchases. Accordingly, as of September 30,
1997, IMS HEALTH deconsolidated Gartner and is accounting for its ownership
interest on the equity basis. Gartner's common stock has historically traded at
higher multiples than market averages and has generally experienced greater
price volatility than the market as a whole. It can be expected that variations
in the market value of the Gartner shares held by IMS HEALTH will have an impact
on the trading prices of IMS HEALTH Common Stock. Gartner's results of
operations may also be subject to the various factors described in Gartner's
reports filed with the SEC from time to time.
 
    PRICE CONTROLS
 
    A number of countries in which IMS HEALTH operates have enacted regulations
limiting the prices pharmaceutical companies may charge for drugs. IMS HEALTH
believes that such cost containment measures will cause pharmaceutical companies
to seek more effective means of marketing their products (which will benefit IMS
HEALTH in the medium and long term). However, such governmental regulation may
cause pharmaceutical companies to revise or reduce their marketing programs in
the near term.
 
    PRIVACY LEGISLATION
 
    Certain of the data services provided by IMS HEALTH relate to the diagnosis
and treatment of disease. The use of patient-specific information is anticipated
to be an increasingly important tool in the design, development and marketing of
pharmaceuticals. To protect privacy, no individual patient is identified in any
IMS HEALTH database. Recently, there have been a number of regulatory and
legislative initiatives in the area of medical privacy at the federal, state and
foreign government levels. Most of these initiatives seek to place restrictions
on the use and disclosure of patient-identifiable information without consent
and consequently would not apply to the IMS HEALTH Business. However, there can
be no assurance that future initiatives would not adversely affect IMS HEALTH's
ability to generate or assemble data or to develop or market current or future
products and services.
 
                                       16
<PAGE>
RISKS RELATING TO NIELSEN MEDIA RESEARCH
 
    COMPETITION
 
    In the past, Nielsen Media Research's ratings systems have been criticized
by various participants in the television industry. Such criticism, in part, has
increased the likelihood of additional competition in its business. In
particular, a television ratings project funded by the Committee on Nationwide
Television Audience Measurement ("CONTAM") and designed and operated by
Statistical Research, Inc. ("SRI"), is operating a 500 household sample in
Philadelphia as a national television ratings laboratory. SRI's Philadelphia
sample has provided limited program level data, although SRI has recently
announced plans to provide more complete program level data from a subset of the
sample in early 1998. Funding has been contributed primarily by the three major
broadcast networks, ABC, CBS, and NBC. During 1996, ABC, CBS, and NBC together
through CONTAM contributed $10 million (in addition to the $30 million they
contributed in 1994) in funding for the completion of the Philadelphia test. In
addition to the other three major networks, Fox Broadcasting as well as four
cable networks, fifteen major advertising agencies and buying services, one
program syndicator and five of the nation's largest advertisers have agreed to
support and participate in the testing phase. Some of these companies have
contributed to the funding of SRI and SRI is actively seeking financial support
from major media companies for a national ratings service. The Philadelphia
sample is viewed by some as a test market for a national ratings service. In
addition, the NBC and CBS broadcast television networks have asked SRI for a
business plan for the creation of a national measurement system that could
provide an alternative to the Nielsen Television Index service.
 
    On the local level, ADCOM offers individual cable system measurement. It is
currently collecting and issuing local cable measurement data in Jacksonville,
Florida.
 
    In Canada, BBM, an established media research organization, has joined with
Taylor Nelson/AGB, a U.K.-based media research company, and announced plans to
provide a competing metered service in Vancouver. BBM, alone or with Taylor
Nelson/AGB, could offer other competitive services in Canada.
 
    Nielsen Media Research's Monitor-Plus service has significant competition
from Competitive Media Reports, a subsidiary of VNU, a Netherlands-based media
company, which has long been the major participant in this market. See "Nielsen
Media Research Business--Competition".
 
    TECHNOLOGY
 
    Nielsen Media Research operates in businesses which require sophisticated
information systems, software and other technology. The technology underlying
the media industry continues to undergo rapid change and Nielsen Media Research
will need to develop and refine techniques for data collection to accommodate
such changes, including digital television, interactive television transmission
and Internet usage. There can be no guarantee that Nielsen Media Research will
be able to develop and refine new techniques for data collection or that it will
be able to do so as quickly or cost-effectively as its competition.
 
    INDEBTEDNESS
 
    In connection with the Distribution, Cognizant will borrow $300 million, the
proceeds of which will be used by Nielsen Media Research to repay existing
intercompany indebtedness to certain entities included in IMS HEALTH. This debt
will be an obligation of Nielsen Media Research after the Distribution. After
the Distribution, Nielsen Media Research will be more leveraged than Cognizant
was prior to such transaction and will have indebtedness that is significant in
relation to its stockholders' equity.
 
    While management believes Nielsen Media Research's cash flow will be
sufficient to service its debt and to reinvest in its business, a substantial
portion of Nielsen Media Research's cash flow will be dedicated to payments of
interest on debt, thereby reducing funds available for other purposes such as
investment in new technologies necessary to perform in the emerging television
environment. Covenants in the credit facility or other financing agreements
relating to such debt may restrict Nielsen Media
 
                                       17
<PAGE>
Research's ability to dispose of assets, incur additional indebtedness, repay
other indebtedness, pay dividends, create liens on assets, make investments or
acquisitions, engage in mergers or consolidations, make capital expenditures or
engage in other corporate activities. In addition, Nielsen Media Research's
ability to obtain additional financing on favorable terms may be impaired in the
future by reason of such indebtedness.
 
    CAPITAL EXPENDITURES; ACCESS TO CAPITAL AS AN INDEPENDENT COMPANY
 
    Nielsen Media Research maintains an active investment program to enhance
existing services and develop new services in response to technological and
marketplace changes. Nielsen Media Research will need to make significant
capital expenditures over the next several years, particularly in light of the
rapid technological changes affecting its business. Prior to the Distribution,
Nielsen Media Research has relied on Cognizant for various financial and
administrative services. After the Distribution, Nielsen Media Research will be
an independent entity responsible for financing its own operations. To the
extent that Nielsen Media Research needs additional funding to finance its
operations and capital expenditures, no assurance can be given that Nielsen
Media Research will be able to access the capital markets or otherwise obtain
necessary financing in the future, or that any such financing can be obtained in
a timely manner or on commercially favorable terms.
 
    EFFECT OF DISTRIBUTION ON TRADING MARKET OF NIELSEN MEDIA RESEARCH COMMON
     STOCK
 
    Nielsen Media Research Common Stock (I.E. the "old" Cognizant Common Stock)
will continue to trade on the NYSE after the Distribution, but the symbol under
which it trades will change from "CZT" to "NSN". However, because of the
significant changes that will take place to Cognizant as a result of the
Distribution, the trading market for Nielsen Media Research Common Stock after
the Distribution may be significantly different from that for Cognizant Common
Stock prior to the Distribution. The market may view Nielsen Media Research as a
"new" company after the Distribution, and due to its smaller size, it may not be
the subject of significant research analyst coverage. There can be no assurance
as to the prices at which the Nielsen Media Research Common Stock will trade
before, on or after the Distribution Date, and until an orderly market develops
in the Nielsen Media Research Common Stock, the price at which it trades may
fluctuate significantly. Prices for Nielsen Media Research Common Stock will be
determined in the marketplace and may be influenced by many factors, including
(i) the depth and liquidity of the market for Nielsen Media Research Common
Stock, (ii) developments affecting the businesses of Nielsen Media Research
including the impact of the factors referred to above, (iii) investor perception
of Nielsen Media Research and (iv) general economic and market conditions.
 
                                       18
<PAGE>
                                THE DISTRIBUTION
 
INTRODUCTION
 
    On January 15, 1998, the Board of Directors of Cognizant approved in
principle a plan to distribute IMS HEALTH Common Stock to all holders of
outstanding Cognizant Common Stock. On            , 1998, the Cognizant Board of
Directors formally approved the Distribution and declared a dividend payable to
each holder of record at the close of business on the Record Date of one share
of IMS HEALTH Common Stock for each share of Cognizant Common Stock held by such
holder as of the close of business on the Record Date.
 
    Cognizant has requested a tax ruling from the Internal Revenue Service that
the receipt by Cognizant stockholders of the IMS HEALTH Common Stock in the
Distribution will be tax-free to such stockholders and Cognizant for Federal
income tax purposes. On or before the Distribution Date, Cognizant will deliver
all of the outstanding shares of IMS HEALTH Common Stock to the Distribution
Agent for transfer and distribution to the holders of record of Cognizant Common
Stock as of the close of business on the Record Date. The Distribution will be
made on or about            , 1998.
 
    Questions relating to the Distribution prior to the Distribution Date or
relating to transfers of IMS HEALTH Common Stock after the Distribution Date
should be directed to: First Chicago Trust Company of New York, Mail Suite 4694,
P.O. Box 2536, Jersey City, NJ 06303-2536, 1-800-519-3111.
 
REASONS FOR THE DISTRIBUTION
 
    The Board of Directors of Cognizant believes that the Distribution is in the
best interests of Cognizant and Cognizant's stockholders and that the separation
of IMS HEALTH will provide each of IMS HEALTH and Nielsen Media Research with
greater managerial, operational and financial flexibility to respond to changing
market conditions in their different business environments. The discussion of
the reasons for the Distribution set forth herein includes forward-looking
statements that are based upon numerous assumptions with respect to the trading
characteristics of the IMS HEALTH Common Stock and the Nielsen Media Research
Common Stock, the ability of IMS HEALTH management to successfully take
advantage of growth and acquisition opportunities and the ability of Nielsen
Media Research to successfully operate as a stand-alone company. Many of such
factors are discussed above under the captions "Forward-Looking Statements" and
"Risk Factors".
 
    MANAGEMENT CONSIDERATIONS.  At present, the Nielsen Media Research Business
and the IMS HEALTH Business are conducted as separate operating groups under the
direction of Cognizant. The Distribution should be beneficial to each of
Cognizant's operating groups, because it will enable the management of each
group to design and advance corporate policies and strategies that are based
primarily on the business characteristics of the group and to concentrate its
financial resources wholly on its own operations.
 
    The Distribution will also permit each of IMS HEALTH and Nielsen Media
Research to design incentive compensation programs that relate more directly to
its own business characteristics and performance and will provide each company
with a "pure play" publicly traded equity security for use in its compensation
programs.
 
    FACILITATE GROWTH OF IMS HEALTH.  IMS HEALTH intends to pursue acquisition
and growth opportunities in its business areas. Such acquisitions and growth may
be pursuant to transactions in which IMS HEALTH Common Stock is offered in
exchange for the stock of the target, or may be pursuant to cash acquisitions
financed through the sale of capital stock of IMS HEALTH. In either event,
management of Cognizant believes that the Distribution will facilitate such
acquisition and growth strategy because it believes that the IMS HEALTH Common
Stock will generally trade at higher price-earnings multiples
 
                                       19
<PAGE>
than those at which Cognizant Common Stock has historically traded. Such higher
multiples would make such stock a more attractive acquisition currency for IMS
HEALTH to deliver, and, to the extent such stock is perceived to be a
high-growth stock, a generally more attractive investment opportunity for the
typical seller of a business in IMS HEALTH's industries.
 
    INVESTOR UNDERSTANDING.  Investors should be able to evaluate better the
financial performance of each of IMS HEALTH and Nielsen Media Research and their
respective strategies, thereby enhancing the likelihood that each will achieve
appropriate market valuation. In addition, each of the businesses will be better
able to focus its public relations efforts on cultivating the public image it
desires. In connection with the Distribution, the healthcare businesses will be
able to adopt the name "IMS HEALTH", which will provide them with a clearly
defined public identity.
 
FORM OF TRANSACTION; BASIS OF PRESENTATION
 
    The Distribution is the method by which Cognizant will be separated into two
publicly traded companies, IMS HEALTH and Nielsen Media Research. In the
Distribution, Cognizant will distribute to its stockholders shares of IMS HEALTH
Common Stock, which will represent a continuing interest in Cognizant's
healthcare information and related businesses to be conducted by IMS HEALTH.
After the Distribution, Cognizant's only business will be the Nielsen Media
Research television audience measurement services business, and the shares of
Cognizant Common Stock held by Cognizant stockholders will represent a
continuing ownership interest in that business. At the time of the Distribution,
Cognizant will change its name to Nielsen Media Research, Inc. From and after
the Distribution Date, Cognizant Common Stock will therefore become "Nielsen
Media Research Common Stock".
 
    Stockholders should note that notwithstanding the legal form of the
Distribution described above, because of the relative significance of the IMS
HEALTH Business to Cognizant, IMS HEALTH will be treated as the "accounting
successor" to Cognizant for financial reporting purposes. Therefore, the
historical financial information for IMS HEALTH included herein is that of
Cognizant and does not currently reflect the separation of the IMS HEALTH
Business from the Nielsen Media Research Business which will occur through the
Distribution. Upon approval of the plan of Distribution, the historical
financial statements of IMS HEALTH as accounting successor to Cognizant will be
restated to present Nielsen Media Research as a "discontinued operation" for
accounting purposes.
 
MANNER OF EFFECTING THE DISTRIBUTION
 
    The Distribution will be made on the Distribution Date to stockholders of
record of Cognizant at the close of business on the Record Date. Based on the
        shares of Cognizant Common Stock outstanding as of            , 1998,
the Distribution would consist of         shares of IMS HEALTH Common Stock.
Prior to the Distribution Date, Cognizant will deliver all outstanding shares of
IMS HEALTH Common Stock to the Distribution Agent for distribution. The
Distribution Agent will mail, on or about the Distribution Date, certificates
representing the shares of IMS HEALTH Common Stock to Cognizant stockholders of
record as of the close of business on the Record Date. Cognizant stockholders
will not be required to pay for shares of IMS HEALTH Common Stock received in
the Distribution, or to surrender or exchange certificates representing shares
of Cognizant Common Stock in order to receive shares of IMS HEALTH Common Stock.
No vote of Cognizant stockholders is required or sought in connection with the
Distribution.
 
    IN ORDER TO BE ENTITLED TO RECEIVE SHARES OF IMS HEALTH COMMON STOCK IN THE
DISTRIBUTION, COGNIZANT STOCKHOLDERS MUST BE STOCKHOLDERS AT THE CLOSE OF
BUSINESS ON THE RECORD DATE,            , 1998.
 
                                       20
<PAGE>
    The Board of Directors of IMS HEALTH will adopt a stockholder rights plan
prior to the Distribution. Certificates evidencing shares of IMS HEALTH Common
Stock issued in the Distribution will therefore represent the same number of IMS
HEALTH Rights issued under the IMS HEALTH Rights Plan. See "Description of IMS
HEALTH Capital Stock--IMS HEALTH Rights Plan". Unless the context otherwise
requires, references herein to the IMS HEALTH Common Stock include the related
IMS HEALTH Rights.
 
FEDERAL INCOME TAX CONSEQUENCES OF THE DISTRIBUTION
 
    Cognizant has applied for a ruling letter from the Internal Revenue Service
to the effect that, among other things, the Distribution will qualify as a
tax-free spin-off under Section 355 of the Internal Revenue Code. Under Section
355 of the Internal Revenue Code, in general:
 
        1.  Holders of Cognizant Common Stock will not recognize any income,
    gain or loss as a result of the Distribution.
 
        2.  Holders of Cognizant Common Stock will apportion the tax basis of
    their Cognizant Common Stock between such Cognizant Common Stock and IMS
    HEALTH Common Stock received by such holder in the Distribution in
    proportion to the relative fair market values of such stock on the
    Distribution Date. Cognizant will provide appropriate information to each
    holder of record of Cognizant Common Stock as of the close of business on
    the Record Date concerning the basis allocation.
 
        3.  The holding period for the IMS HEALTH Common Stock received in the
    Distribution by holders of Cognizant Common Stock will include the period
    during which such holder held the Cognizant Common Stock with respect to
    which the Distribution was made, provided that such Cognizant Common Stock
    is held as a capital asset by such holder on the Distribution Date.
 
        4.  The Distribution will not be treated as a taxable disposition of IMS
    HEALTH by Cognizant.
 
    Current Treasury regulations require each holder of Cognizant Common Stock
who receives IMS HEALTH Common Stock pursuant to the Distribution to attach to
his or her Federal income tax return for the year in which the Distribution
occurs a detailed statement setting forth such data as may be appropriate in
order to show the applicability of Section 355 of the Internal Revenue Code to
the Distribution. Cognizant will convey the appropriate information to each
holder of record of Cognizant Common Stock as of the close of business on the
Record Date.
 
    The Internal Revenue Service ruling will be based on certain factual
representations made by Cognizant. If such factual representations were
incorrect in a material respect, such ruling could become invalid. Cognizant is
not aware of any facts or circumstances which would cause such representations
to be incorrect in a material respect. In the Distribution Agreement, each of
Cognizant and IMS HEALTH will agree to certain restrictions on its future
actions to provide further assurances that Section 355 of the Internal Revenue
Code will apply to the Distribution. See "Relationship Between IMS HEALTH and
Nielsen Media Research After the Distribution". If the Distribution were not to
qualify under Section 355 of the Internal Revenue Code, then, in general, a
corporate tax (which, as noted below, would be very substantial) would be
payable by the consolidated group, of which Cognizant is the common parent,
based upon the difference between (x) the fair market value of the IMS HEALTH
Common Stock and (y) the adjusted basis of such IMS HEALTH Common Stock. In
addition, under the consolidated return rules, each member of the consolidated
group would be jointly and severally liable for such tax liability. If the
Distribution occurred and it were not to qualify under Section 355 of the
Internal Revenue Code, the resulting tax liability would have a material adverse
effect on the financial position, results of operations and cash flows of each
of IMS HEALTH and Nielsen Media Research. Cognizant estimates that the
 
                                       21
<PAGE>
aggregate shared tax liability in this regard of IMS HEALTH and Nielsen Media
Research would be in the range of approximately $2.5 to $3.0 billion.
 
    Furthermore, if the Distribution were not to qualify as a tax-free spin-off,
each Cognizant stockholder receiving shares of IMS HEALTH Common Stock in the
Distribution would be treated as if such stockholder had received a taxable
distribution in an amount equal to the fair market value of IMS HEALTH Common
Stock received, which would result in (i) a dividend to the extent of such
stockholder's pro rata share of Cognizant's current and accumulated earnings and
profits, (ii) a reduction in such stockholder's basis in Cognizant Common Stock
to the extent the amount received exceeds such stockholder's share of earnings
and profits and (iii) a capital gain to the extent the amount received exceeds
the sum of the amount treated as a dividend and the stockholder's basis.
 
    The foregoing summary of the anticipated Federal income tax consequences of
the Distribution is for general information only. COGNIZANT STOCKHOLDERS SHOULD
CONSULT THEIR OWN ADVISERS AS TO THE SPECIFIC TAX CONSEQUENCES OF THE
DISTRIBUTION, INCLUDING THE APPLICATION AND EFFECT OF FOREIGN, STATE AND LOCAL
TAX LAWS.
 
LISTING AND TRADING OF IMS HEALTH COMMON STOCK AND NIELSEN MEDIA RESEARCH COMMON
  STOCK
 
    Prior to the date hereof, there has not been any established trading market
for IMS HEALTH Common Stock. Application will be made to list the shares of IMS
HEALTH Common Stock on the NYSE under the symbol "RX", and trading is expected
to commence on a "when-issued" basis at least two days prior to the Record Date.
On the first NYSE trading day following the Distribution Date, "when-issued"
trading in respect of the IMS HEALTH Common Stock will end and "regular-way"
trading will begin.
 
    There can be no assurance as to the prices at which the IMS HEALTH Common
Stock will trade before, on or after the Distribution Date. Until the IMS HEALTH
Common Stock is fully distributed and an orderly market develops in the IMS
HEALTH Common Stock, the price at which it trades may fluctuate significantly
and may be lower or higher than the price that would be expected for a fully
distributed issue. Prices for the IMS HEALTH Common Stock will be determined in
the marketplace and may be influenced by many factors, including (i) the depth
and liquidity of the market for IMS HEALTH Common Stock, (ii) developments
affecting the businesses of IMS HEALTH generally including the impact of the
factors referred to in "Risk Factors" above, (iii) investor perception of IMS
HEALTH and (iv) general economic and market conditions.
 
    Shares of IMS HEALTH Common Stock distributed to Cognizant stockholders will
be freely transferable, except for shares of IMS HEALTH Common Stock received by
persons who may be deemed to be "affiliates" of IMS HEALTH under the Securities
Act. Persons who may be deemed to be affiliates of IMS HEALTH after the
Distribution generally include individuals or entities that control, are
controlled by, or are under common control with, IMS HEALTH, and may include
certain officers and directors of IMS HEALTH, as well as principal stockholders
of IMS HEALTH. Persons who are affiliates of IMS HEALTH will be permitted to
sell their shares of IMS HEALTH Common Stock only pursuant to an effective
registration statement under the Securities Act or an exemption for the
registration requirements of the Securities Act, such as the exemption afforded
by Section 4(1) of the Securities Act or Rule 144 thereunder.
 
    Nielsen Media Research Common Stock (I.E. the "old" Cognizant Common Stock)
will continue to trade on the NYSE after the Distribution, but the symbol under
which it trades will change from "CZT" to "NSN". However, because of the
significant changes that will take place to Cognizant as a result of the
Distribution, the trading market for Nielsen Media Research Common Stock after
the Distribution may be significantly different from that for Cognizant Common
Stock prior to the Distribution. The market may view Nielsen Media Research as a
"new" company after the Distribution, and due to its smaller size, it may not be
the subject of significant research analyst coverage. There can be no assurance
as to the prices at
 
                                       22
<PAGE>
which Nielsen Media Research Common Stock will trade before, on or after the
Distribution Date, and until an orderly market develops in the Nielsen Media
Research Common Stock, the price at which it trades may fluctuate significantly.
Prices for Nielsen Media Research Common Stock will be determined in the
marketplace and may be influenced by many factors, including (i) the depth and
liquidity of the market for Nielsen Media Research Common Stock, (ii)
developments affecting the businesses of Nielsen Media Research including the
impact of the factors referred to in "Risk Factors" above, (iii) investor
perception of Nielsen Media Research and (iv) general economic and market
conditions.
 
NIELSEN MEDIA RESEARCH AND IMS HEALTH INDEBTEDNESS AND MINORITY-INTEREST
  FINANCING
 
    In connection with the Distribution, Cognizant will borrow $300 million, the
proceeds of which will be used to repay existing intercompany indebtedness to
certain entities included in IMS HEALTH. This debt will be an obligation of
Nielsen Media Research after the Distribution. The borrowing is expected to bear
interest at prevailing market interest rates and to have a term of 7 to 10
years. Upon or soon after the Distribution, IMS HEALTH intends to borrow $50
million in short-term debt, the proceeds of which will be used to help finance a
stock repurchase program expected to be approved by the IMS HEALTH Board of
Directors. IMS HEALTH also will retain $100 million in pre-existing
minority-interest financing.
 
                                       23
<PAGE>
                        RELATIONSHIP BETWEEN IMS HEALTH
               AND NIELSEN MEDIA RESEARCH AFTER THE DISTRIBUTION
 
    IMS HEALTH is wholly owned by Cognizant and the results of operations of
entities that are or will be its subsidiaries have been included in Cognizant's
consolidated financial statements and results of operations. After the
Distribution, Cognizant (to be renamed Nielsen Media Research, Inc.) will not
have any ownership interest in IMS HEALTH, and IMS HEALTH will be an independent
public company. In addition, after the Distribution, IMS HEALTH will not have
any ownership interest in Nielsen Media Research (other than 800,000 shares of
Nielsen Media Research Common Stock which IMS HEALTH will own as a result of
Cognizant Common Stock currently held by a subsidiary of IMS HEALTH and which
IMS HEALTH will dispose of shortly after the Distribution), and Nielsen Media
Research will be an independent public company. Furthermore, except as described
below, all contractual relationships existing prior to the Distribution between
Cognizant (to be renamed Nielsen Media Research, Inc.) and IMS HEALTH will be
terminated except for contracts specifically set forth in a schedule to the
Distribution Agreement.
 
    Prior to the Distribution, Cognizant (which will become Nielsen Media
Research) and IMS HEALTH will enter into certain agreements as described below,
which will govern the relationship between Nielsen Media Research and IMS HEALTH
subsequent to the Distribution and provide for the allocation of tax, employee
benefits and certain other liabilities and obligations arising from periods
prior to the Distribution. Copies of the forms of such agreements are filed as
exhibits to the Registration Statement of IMS HEALTH in respect of the
registration of the IMS HEALTH Common Stock under the Securities Exchange Act of
1934, as amended (the "Exchange Act"). In addition, Cognizant (which will become
Nielsen Media Research) will file a Current Report on Form 8-K in connection
with the Distribution, and the agreements will be filed as exhibits to the Form
8-K. Such agreements may be amended by Cognizant prior to the Distribution Date.
In addition, there will be individuals on the Boards of Directors of IMS HEALTH
and Nielsen Media Research who will also serve on the Board of Directors of the
other company. See "IMS HEALTH Management and Executive Compensation--Board of
Directors" and "Nielsen Media Research Management and Executive
Compensation--Board of Directors".
 
    The following description summarizes certain terms of such agreements, but
is qualified by reference to the texts of such agreements, which are
incorporated herein by reference.
 
DISTRIBUTION AGREEMENT
 
    Cognizant and IMS HEALTH will enter into the Distribution Agreement
providing for, among other things, certain corporate transactions required to
effect the Distribution and other arrangements between Nielsen Media Research
and IMS HEALTH subsequent to the Distribution.
 
    In particular, the Distribution Agreement defines the assets and liabilities
which are being allocated to and assumed by IMS HEALTH and those which will
remain with Nielsen Media Research. The Distribution Agreement also defines what
constitutes the "IMS HEALTH Business" and what constitutes the "Nielsen Media
Research Business".
 
    Pursuant to the Distribution Agreement, Cognizant is obligated to transfer
or cause to be transferred all its right, title and interest in the assets
comprising the IMS HEALTH Business and other assets not specifically included in
the Nielsen Media Research Business to IMS HEALTH and IMS HEALTH is obligated to
transfer or cause to be transferred all its right, title and interest in the
assets comprising the Nielsen Media Research Business to Cognizant. All assets
are being transferred without any representation or warranty, "as is-where is",
and the relevant transferee bears the risk that any necessary consent to
transfer is not obtained. Each party also agrees to exercise its respective
commercially reasonable efforts promptly to obtain any necessary consents and
approvals and to take such actions as may be reasonably necessary or desirable
to carry out the purposes of the Distribution Agreement and the other agreements
summarized below.
 
                                       24
<PAGE>
    The Distribution Agreement provides for, among other things, assumptions of
liabilities and cross indemnities designed to allocate generally, effective as
of the Distribution Date, financial responsibility for the liabilities arising
out of or in connection with (i) the businesses conducted by Nielsen Media
Research and certain other liabilities formerly within Cognizant to Nielsen
Media Research and (ii) all other liabilities, including liabilities of the IMS
HEALTH Business, to IMS HEALTH. For a discussion of such businesses, see "IMS
HEALTH Business" and "Nielsen Media Research Business". The Distribution
Agreement provides for the allocation generally of the financial responsibility
for the liabilities arising out of or in connection with former businesses,
including those formerly conducted by or associated with Cognizant or IMS
HEALTH, to IMS HEALTH. The Distribution Agreement also allocates between IMS
HEALTH and Nielsen Media Research contingent liabilities related to certain
prior business transactions.
 
    Pursuant to the terms of the 1996 Distribution Agreement, as a condition to
the Distribution, IMS HEALTH and Nielsen Media Research are required to
undertake to be jointly and severally liable to D&B and ACNielsen for any
liabilities arising thereunder. The Distribution Agreement allocates between IMS
HEALTH and Nielsen Media Research the financial responsibility for such
liabilities. Among other things, IMS HEALTH and Nielsen Media Research have
agreed that, as between themselves, IMS HEALTH will assume 75%, and Nielsen
Media Research will assume 25%, of any payments to be made in respect of the IRI
Action under the Indemnity and Joint Defense Agreement or otherwise, including
any legal fees and expenses related thereto incurred in 1999 or thereafter. IMS
HEALTH has agreed to be fully responsible for any legal fees and expenses
incurred during 1998. Nielsen Media Research's aggregate liability to IMS HEALTH
for payments in respect of the IRI Action and certain other contingent
liabilities referred to in the previous paragraph shall not exceed $125 million.
 
    In addition, the Distribution Agreement provides that immediately prior to
the Distribution, Cognizant will transfer $      million in cash to IMS HEALTH.
 
    The Distribution Agreement includes provisions governing the administration
of certain insurance programs and the procedures for making claims. The
Distribution Agreement also allocates the right to proceeds and the obligation
to satisfy deductibles under certain insurance policies.
 
    In the event that any transfers contemplated by the Distribution Agreement
are not effected on or prior to the Distribution Date, the parties will be
required to cooperate to effect such transfers as promptly as practicable
following the Distribution Date, and pending any such transfers, to hold any
asset not so transferred in trust for the use and benefit of the party entitled
thereto (at the expense of the party entitled thereto), and to retain any
liability not so transferred for the account of the party by whom such liability
is to be assumed.
 
    The Distribution Agreement provides that Cognizant (which will become
Nielsen Media Research) and IMS HEALTH will comply with and otherwise not take
action inconsistent with each representation and statement made to the Internal
Revenue Service in connection with Cognizant's request for a ruling letter as to
certain tax aspects of the Distribution. Each of Cognizant and IMS HEALTH agrees
to maintain its status as a company engaged in the active conduct of a trade or
business, as defined in Section 355(b) of the Internal Revenue Code, until the
second anniversary of the Distribution Date. Neither Nielsen Media Research nor
IMS HEALTH expects this limitation to inhibit its financing or other activities
or its ability to respond to unanticipated developments. Under the Distribution
Agreement, Cognizant (which will become Nielsen Media Research) agrees that
until two years after the Distribution Date it will not (i) merge or consolidate
with another corporation, (ii) liquidate or partially liquidate, (iii) sell or
transfer all or substantially all of its assets, (iv) redeem or repurchase its
stock (except in certain limited circumstances), or (v) take any other action
which would result in one or more persons acquiring a 50 percent or greater
interest in Cognizant, unless, prior to taking such action, it obtains a written
opinion of a law firm or a supplemental ruling from the Internal Revenue Service
that such action will not affect the tax-free treatment of the Distribution. As
a result of the representations in the request for a ruling letter and the
covenants in the Distribution Agreement, the acquisition of control of each of
Nielsen
 
                                       25
<PAGE>
Media Research and IMS HEALTH prior to the second anniversary of the
Distribution Date may be more difficult or less likely to occur because of the
potential substantial liability associated with a breach of such representations
or covenants. The Distribution Agreement provides that if a party fails to
comply with the obligations described above or takes or fails to take any action
and such failure, act or omission contributes to a determination that the
Distribution is not tax-free to Cognizant, IMS HEALTH or their stockholders,
such party must indemnify the other party and its stockholders from any taxes
arising therefrom.
 
    Under the Distribution Agreement, each of Cognizant and IMS HEALTH agrees to
provide to the other party, subject to certain conditions, access to certain
corporate records and information and to provide or cause to be provided certain
services on such terms as are set forth in a Transition Services Agreement
between such parties.
 
    The Distribution Agreement also provides that, except as otherwise set forth
therein or in any other agreement, all costs or expenses incurred on or prior to
the Distribution Date in connection with the Distribution will be charged to and
paid by               . IMS HEALTH will agree to be liable for any claims
arising from or based upon (i) the Acquisitions and any filings with the SEC
related thereto and (ii) "controlling person" liability relating to the
Registration Statement on Form 10 filed with the SEC by IMS HEALTH. Except as
set forth in the Distribution Agreement or any related agreement, each party
shall bear its own costs and expenses incurred after the Distribution Date.
 
TAX ALLOCATION AGREEMENT
 
    Cognizant and IMS HEALTH will enter into a Tax Allocation Agreement which
will allocate liability for taxes for tax periods beginning prior to the
Distribution Date. For tax periods beginning on or after the Distribution Date,
Nielsen Media Research will be liable for all taxes relating to the Nielsen
Media Research Business and IMS HEALTH will be liable for all taxes relating to
the IMS HEALTH Business.
 
EMPLOYEE BENEFITS AGREEMENT
 
    Cognizant and IMS HEALTH will enter into an Employee Benefits Agreement (the
"Employee Benefits Agreement"), which allocates responsibility for certain
employee benefits matters on and after the Distribution Date.
 
    The Employee Benefits Agreement provides that IMS HEALTH will adopt a new
defined benefit pension plan for employees of the IMS HEALTH Business ("IMS
HEALTH Employees") and former employees of the IMS HEALTH Business who
terminated employment on or prior to the Distribution Date ("IMS HEALTH
Retirees") and that Nielsen Media Research will continue to sponsor Cognizant's
current plan for the benefit of employees of the Nielsen Media Research Business
("Nielsen Media Research Employees") and former employees of the Nielsen Media
Research Business who terminated employment on or prior to the Distribution Date
("Nielsen Media Research Retirees"). Assets and liabilities of the current
Cognizant pension plan that are attributable to IMS HEALTH Employees and IMS
HEALTH Retirees will be transferred to the new IMS HEALTH plan.
 
    In addition, IMS HEALTH will adopt a new savings plan for IMS HEALTH
Employees and IMS HEALTH Retirees, and Nielsen Media Research will continue to
sponsor its savings plan for the benefit of Nielsen Media Research Employees and
Nielsen Media Research Retirees. The account balances of IMS HEALTH Employees
and IMS HEALTH Retirees will be transferred to the new IMS HEALTH plan.
 
    IMS HEALTH will adopt new nonqualified supplemental pension plans for the
benefit of IMS HEALTH Employees and IMS HEALTH Retirees, and Nielsen Media
Research will retain the liability for benefits under Cognizant's nonqualified
supplemental pension plans with respect to Nielsen Media Research Employees and
Nielsen Media Research Retirees.
 
    The Employee Benefits Agreement also provides that Nielsen Media Research
will continue to sponsor its welfare plans for Nielsen Media Research Employees
and Nielsen Media Research Retirees.
 
                                       26
<PAGE>
As of the Distribution Date, IMS HEALTH will adopt welfare plans for the benefit
of IMS HEALTH Employees and IMS HEALTH Retirees. Each of IMS HEALTH and Nielsen
Media Research will provide retiree welfare benefits, where applicable, to its
own employees and retirees.
 
    Nielsen Media Research and IMS HEALTH will each generally retain the
severance liabilities of their respective employees who terminated employment
prior to the Distribution Date.
 
    With respect to equity-based plans, the Employee Benefits Agreement provides
that unexercised Cognizant stock options held by Nielsen Media Research
Employees as of the Distribution Date will be adjusted to reflect the
Distribution. The number of shares of Nielsen Media Research Common Stock
covered by each adjusted stock option will be determined by (i) multiplying the
number of shares of Cognizant Common Stock covered by the unexercised Cognizant
stock option by a fraction, the numerator of which is the average of the Daily
Average Trading Prices per share of Cognizant Common Stock for the five
consecutive trading days immediately preceding the first date on which Cognizant
Common Stock is traded ex-dividend, and the denominator of which is the average
of the Daily Average Trading Prices per share of Nielsen Media Research Common
Stock for the five consecutive trading days starting on the first date on which
Nielsen Media Research Common Stock is traded ex-dividend (the "Nielsen Media
Research Ratio"), and (ii) rounding down the result to a whole number of shares.
The Daily Average Trading Price of a given stock on a given day means the
average of the high and low trading prices for such stock on such date. The
exercise price per share of an adjusted Cognizant stock option will be
determined by dividing the exercise price per share of an unexercised Cognizant
stock option by the Nielsen Media Research Ratio. The adjustment of the
Cognizant stock options will not result in a compensation charge to Cognizant or
Nielsen Media Research.
 
    Unexercised Cognizant stock options held by IMS HEALTH Employees as of the
Distribution Date will be canceled and replaced with options that are
exercisable into shares of IMS HEALTH Common Stock. The number of shares of IMS
HEALTH Common Stock covered by each replacement stock option will be determined
by (i) multiplying the number of shares of Cognizant Common Stock covered by the
canceled Cognizant stock option by a fraction, the numerator of which is the
average of the Daily Average Trading Prices per share of Cognizant Common Stock
for the five consecutive trading days immediately preceding the first date on
which Cognizant Common Stock is traded ex-dividend, and the denominator of which
is the average of the Daily Average Trading Prices per share of IMS HEALTH
Common Stock for the five consecutive trading days starting on the first date on
which IMS HEALTH Common Stock is traded regular way (the "IMS HEALTH Ratio"),
and (ii) rounding down the result to a whole number of shares. The exercise
price per share of a replacement stock option will be determined by dividing the
exercise price per share of the canceled Cognizant stock option by the IMS
HEALTH Ratio. Except as otherwise provided in the applicable plans, all other
terms of the replacement stock options will remain substantially identical to
the terms of the canceled Cognizant stock options. The issuance of the
replacement stock options will not result in a compensation charge to IMS
HEALTH.
 
    All limited stock appreciation rights will be adjusted or converted in
substantially the same manner as the unexercised Cognizant stock options. See
"Cognizant Management and Executive Compensation-- Option Grants on Cognizant
Common Stock to Cognizant Executives in Last Fiscal Year" and "IMS HEALTH
Management and Executive Compensation--Option Grants on Cognizant Common Stock
to Executives in Last Fiscal Year".
 
    With respect to restricted stock, IMS HEALTH restricted stock received by
Nielsen Media Research Employees in the Distribution shall be forfeited and each
such individual shall receive a number of additional shares of Nielsen Media
Research restricted stock, determined by multiplying the number of shares of
forfeited IMS HEALTH restricted stock by the Nielsen Media Research Ratio and
the reciprocal of the IMS HEALTH Ratio, having the same terms as the Cognizant
restricted stock from which they arose.
 
                                       27
<PAGE>
    Cognizant restricted stock held by IMS HEALTH Employees and IMS HEALTH
restricted stock received by IMS HEALTH Employees in the Distribution shall be
forfeited and such individuals shall receive replacement IMS HEALTH restricted
stock equal to (i) the number of shares of forfeited IMS HEALTH restricted stock
plus (ii) the number of shares of forfeited Cognizant restricted stock
multiplied by the IMS HEALTH Ratio and the reciprocal of the Nielsen Media
Research Ratio, such replacement IMS HEALTH restricted stock to have the same
terms as the Cognizant restricted stock from which they arose.
 
    From and after the Distribution Date, Nielsen Media Research shall continue
to sponsor an Employee Stock Purchase Plan. IMS HEALTH shall adopt the IMS
HEALTH Employee Stock Purchase Plan for the benefit of IMS HEALTH Employees.
 
    As of the Distribution Date, IMS HEALTH Employees will generally cease
participation in Cognizant's employee benefit plans, and IMS HEALTH will
generally recognize, among other things, their respective employees' past
service with Cognizant under their respective employee benefit plans. Except as
specifically provided therein, nothing in the Employee Benefits Agreement
restricts Nielsen Media Research's or IMS HEALTH's ability to amend or terminate
any of their respective employee benefit plans after the Distribution Date.
 
INTELLECTUAL PROPERTY AGREEMENT
 
    Cognizant and IMS HEALTH will enter into an Intellectual Property Agreement
(the "IP Agreement") which provides for the allocation and recognition by and
between Nielsen Media Research and IMS HEALTH of rights under patents,
copyrights, software, technology, trade secrets and certain other intellectual
property owned by IMS HEALTH and Nielsen Media Research and their respective
subsidiaries as of the Distribution Date. See "IMS HEALTH Business--Intellectual
Property" and "Nielsen Media Research Business--Intellectual Property".
 
SHARED TRANSACTION SERVICES AGREEMENTS
 
    Cognizant and IMS HEALTH will enter into Shared Transaction Services
Agreements providing for the orderly continuation, for a transitional period
after the Distribution Date, of certain of the shared transaction and other
services (such as payroll, accounts payable, general accounting and computer
processing and support) currently being provided by or to Nielsen Media Research
and IMS HEALTH.
 
DATA SERVICES AGREEMENTS
 
    Cognizant and IMS HEALTH will enter into Data Services Agreements providing
for the orderly continuation, for a transitional period after the Distribution
Date, of certain specified computer processing and related services to be
provided by or to Nielsen Media Research and IMS HEALTH.
 
TRANSITION SERVICES AGREEMENT
 
    Cognizant and IMS HEALTH will enter into a Transition Services Agreement
pursuant to which Nielsen Media Research and IMS HEALTH have agreed to certain
basic terms governing the provision by or to the other party of specified
administrative or other support services for a transitional period after the
Distribution Date.
 
OVERLAPPING DIRECTORS
 
    After the Distribution Date, there will be individuals on the Boards of
Directors of IMS HEALTH and Nielsen Media Research who will also serve on the
Board of Directors of the other company. Robert E. Weissman and M. Bernard
Puckett will serve on the Boards of Directors of both companies. See "IMS
 
                                       28
<PAGE>
HEALTH Management and Executive Compensation--Board of Directors" and "Nielsen
Media Research Management and Executive Compensation--Board of Directors".
 
                               DIVIDEND POLICIES
 
IMS HEALTH
 
    The payment and level of cash dividends by IMS HEALTH after the Distribution
will be subject to the discretion of the Board of Directors of IMS HEALTH. It is
anticipated that IMS HEALTH will initially pay a dividend equal to Cognizant's
current annualized dividend of $0.12 per share. Future dividend decisions will
be based on, and affected by, a number of factors, including the operating
results and financial requirements of IMS HEALTH on a stand-alone basis.
 
NIELSEN MEDIA RESEARCH
 
    The payment and level of cash dividends by Nielsen Media Research after the
Distribution will be subject to the discretion of the Board of Directors of
Nielsen Media Research. Nielsen Media Research currently intends to retain
future earnings for the development of its business and does not anticipate
paying cash dividends in the near future. Future dividend decisions will be
based on, and affected by, a number of factors, including the operating results
and financial requirements of Nielsen Media Research on a stand-alone basis as
well as applicable legal and contractual restrictions. There can be no assurance
that any dividends will be declared or paid.
 
                                       29
<PAGE>
         IMS HEALTH (ACCOUNTING SUCCESSOR TO COGNIZANT) CAPITALIZATION
 
    Notwithstanding the legal form of the Distribution, whereby Cognizant
expects to spin off IMS HEALTH, for accounting purposes the transaction is
accounted for as if Cognizant will spin off Nielsen Media Research. For
financial reporting purposes, the following financial information relates to IMS
HEALTH, the accounting successor to Cognizant.
 
    The following table sets forth the capitalization of IMS HEALTH at March 31,
1998 on a historical basis, and at March 31, 1998 on a pro forma basis as
adjusted to give effect to the Distribution and the transactions contemplated
thereby. The historical financial information set forth below relates to
Cognizant. See "The Distribution--Form of Transaction; Basis of Presentation".
The following data is qualified in its entirety by the consolidated financial
statements of Cognizant and other information contained elsewhere in this
Information Statement. See "Risk Factors".
<TABLE>
<CAPTION>
                                                                             (UNAUDITED)
                                                           -----------------------------------------------
<S>                                                        <C>              <C>             <C>
                                                           MARCH 31, 1998     PRO FORMA      PRO FORMA AT
                                                               ACTUAL        ADJUSTMENTS    MARCH 31, 1998
                                                           ---------------  --------------  --------------
 
<CAPTION>
                                                                      ($ AMOUNTS IN THOUSANDS)
<S>                                                        <C>              <C>             <C>
Cash and Cash Equivalents................................                                 (1)
                                                           ---------------  --------------  --------------
Notes Payable............................................
Long-Term Debt...........................................
Minority Interests.......................................
Shareholders' Equity:....................................
  Preferred Stock, par value $.01 per share,
    authorized -- 10,000,000 shares:
    outstanding -- none..................................
  Series Common Stock, par value $.01 per share,
    authorized -- 10,000,000 shares:
    outstanding -- none..................................
  Common Stock, par value $.01 per share, authorized --
    400,000,000 shares:
    outstanding --       shares..........................
Capital Surplus..........................................
Retained Earnings........................................                                    (2)
Cumulative Translation Adjustment........................
Unrealized Gains on Investments..........................
Treasury Stock --       shares...........................                                 (3)
                                                           ---------------  --------------  --------------
    Total Equity.........................................
                                                           ---------------  --------------  --------------
    Total Capitalization.................................  $                $               $
                                                           ---------------  --------------  --------------
                                                           ---------------  --------------  --------------
</TABLE>
 
SUMMARY OF SIGNIFICANT PRO FORMA CAPITALIZATION ASSUMPTIONS
 
(1) In connection with the Distribution, Cognizant will borrow $300 million,
    which will be used to repay existing intercompany liabilities. This debt
    will be the obligation of Nielsen Media Research after the Distribution. The
    adjustment is reflected as an increase in cash and cash equivalents
    resulting from the proceeds of the debt.
 
(2) To reflect (for accounting purposes only) the dividend of the net assets of
    the Nielsen Media Research Business in connection with the Distribution.
 
(3) To reflect the recapitalization of IMS HEALTH including the elimination of
    treasury stock which will be treasury shares of Nielsen Media Research after
    the Distribution.
 
                                       30
<PAGE>
                                   IMS HEALTH
                      (ACCOUNTING SUCCESSOR TO COGNIZANT)
                            SELECTED FINANCIAL DATA
 
    Notwithstanding the legal form of the Distribution, whereby Cognizant
expects to spin off IMS HEALTH, for accounting purposes the transaction is
accounted for as if Cognizant will spin off Nielsen Media Research. For
financial reporting purposes, the following financial information relates to IMS
HEALTH, the accounting successor to Cognizant. The financial data as of and for
all years ended December 31, are from the audited financial statements of
Cognizant, which statements for 1997, 1996 and 1995 are contained elsewhere in
this Information Statement. The financial data as of and for the three months
ended March 31, 1998 and 1997 are unaudited. The historical financial
information set forth below relates to Cognizant. See "The Distribution-Form of
Transaction; Basis of Presentation". The following financial data should also be
read in conjunction with the information set forth under "IMS HEALTH (Accounting
Successor to Cognizant) Management's Discussion and Analysis of Financial
Condition and Results of Operations" and Cognizant's Consolidated Financial
Statements and Notes thereto appearing elsewhere in this Information Statement.
 
<TABLE>
<CAPTION>
                               THREE MONTHS ENDED AND
                                       AS OF
                                     MARCH 31,                      YEAR ENDED AND AS OF DECEMBER 31,
                              ------------------------  ---------------------------------------------------------
                                 1998         1997       1997(1)    1996(2)    1995(3)     1994(4)      1993(5)
                              -----------  -----------  ---------  ---------  ---------  -----------  -----------
                              (UNAUDITED)  (UNAUDITED)
                                                ($ AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                           <C>          <C>          <C>        <C>        <C>        <C>          <C>
INCOME STATEMENT DATA:
Operating Revenue(6)........   $            $ 315,576   $1,418,153 $1,730,596 $1,542,340  $1,257,415   $1,039,259
Income before Cumulative
  Effect of Accounting
  Changes...................   $            $  52,905   $ 312,350  $ 195,451  $  88,881   $ 146,405    $ 108,857
Earnings Per Share of Common
  Stock on Income before
  Cumulative Effect of
  Accounting
  Changes--Basic............   $            $    0.31   $    1.89  $    1.15  $    0.52   $    0.86    $  --
Earnings Per Share of Common
  Stock on Income before
  Cumulative Effect of
  Accounting Changes--
  Diluted...................   $            $    0.31   $    1.86  $    1.15  $    0.52   $    0.85    $  --
BALANCE SHEET DATA:
Total Assets................   $            $1,405,430  $1,579,520 $1,874,982 $1,442,090  $1,331,038   $1,158,764
Long-Term Debt..............   $            $   3,463   $   2,912  $   3,736  $  10,485   $  15,484    $   5,374
</TABLE>
 
- ------------------------
(1) Income before Cumulative Effect of Accounting Changes in 1997 includes an
    unrealized gain on its investment in Gartner of $10,664 and gains from
    dispositions-net of $6,818.
 
(2) Income before Cumulative Effect of Accounting Changes in 1996 includes a
    one-time acquisition-related charge of $32,778 related to Gartner's
    acquisition of J3 Learning Corporation and gains from dispositions-net of
    $112.
 
(3) Income before Cumulative Effect of Accounting Changes in 1995 includes a
    non-recurring charge of $49,268, an incremental provision of postemployment
    benefits of $17,778, restructuring expense of $7,002 and gains from
    dispositions-net of $8,269.
 
(4) Income before Cumulative Effect of Accounting Changes in 1994 includes
    restructuring expense of $7,957 and a gain from disposition of $12,806.
 
(5) Income before Cumulative Effect of Accounting Changes in 1993 includes
    restructuring expense of $46,408 and a gain from disposition of $13,676.
 
(6) Operating Revenue for the three months ended March 31, 1998 and 1997 and the
    year ended December 31, 1997 reflects Gartner on the equity method of
    accounting; accordingly no Gartner revenue is reflected. Operating Revenue
    for the years ended December 31, 1996, 1995, 1994 and 1993 reflects Gartner
    on a consolidated basis.
 
                                       31
<PAGE>
IMS HEALTH (ACCOUNTING SUCCESSOR TO COGNIZANT) UNAUDITED CONSOLIDATED PRO FORMA
                              FINANCIAL STATEMENTS
 
    Notwithstanding the legal form of the Distribution, whereby Cognizant
expects to spin off IMS HEALTH, for accounting purposes the transaction is
accounted for as if Cognizant will spin off Nielsen Media Research. For
financial reporting purposes, the following financial information relates to IMS
HEALTH, the accounting successor to Cognizant. The historical Consolidated
Statement of Income for IMS HEALTH is from the historical (pre-Distribution)
Consolidated Statement of Income of Cognizant. The Unaudited Consolidated Pro
Forma Statement of Income for IMS HEALTH for the year ended December 31, 1997
presents the results of operations of IMS HEALTH and material pro forma
adjustments necessary for this purpose.
 
    The Unaudited Consolidated Pro Forma Statement of Income and Statement of
Financial Position of IMS HEALTH should be read in conjunction with the
historical consolidated financial statements of Cognizant contained elsewhere in
this Information Statement. The pro forma data are for informational purposes
only and may not necessarily reflect future results of operations and or what
the results of operations would have been had IMS HEALTH been operated as a
separate entity.
 
    As described under "The Distribution--Form of Transaction; Basis of
Presentation", for financial reporting purposes, IMS HEALTH will be treated as
the "accounting successor" to Cognizant. Therefore, the historical financial
information for IMS HEALTH included herein is that of Cognizant. The following
tables set forth the IMS HEALTH historical Consolidated Statement of Income for
the year ended December 31, 1997 and three months ended March 31, 1998, giving
effect to the deconsolidation of Nielsen Media Research as of the beginning of
the period presented. The IMS HEALTH historical Unaudited Condensed Consolidated
Pro Forma Statement of Financial Position as of March 31, 1998 gives effect to
the deconsolidation of Nielsen Media Research. Upon approval of the plan of
Distribution, the historical financial statements of IMS HEALTH as accounting
successor to Cognizant will be restated to present Nielsen Media Research as a
"discontinued operation" for accounting purposes.
 
                                   IMS HEALTH
                      (ACCOUNTING SUCCESSOR TO COGNIZANT)
              UNAUDITED CONSOLIDATED PRO FORMA STATEMENT OF INCOME
 
<TABLE>
<CAPTION>
                                                                    YEAR ENDED DECEMBER 31, 1997
                                                              ----------------------------------------
                                                                ($ AMOUNTS IN THOUSANDS, EXCEPT PER
                                                                            SHARE DATA)
                                                              HISTORICAL
                                                                 IMS       PRO FORMA        PRO FORMA
                                                              HEALTH(1)   ADJUSTMENTS       IMS HEALTH
                                                              ----------  -----------       ----------
<S>                                                           <C>         <C>               <C>
OPERATING REVENUE                                             $1,418,153  ($  358,594)(2)   $1,059,559
 
Operating Costs and Selling and Administrative Expense          965,497      (222,199)(2)     743,298
Depreciation and Amortization                                   117,314       (28,663)(2)      88,651
                                                              ----------  -----------       ----------
OPERATING INCOME                                                335,342      (107,732)(2)     227,610
                                                              ----------  -----------       ----------
Non-Operating Income - Net                                       94,893        15,750(3)      110,643
                                                              ----------  -----------       ----------
Income Before Provision for Income Taxes                        430,235       (91,982)        338,253
Provision for Income Taxes                                     (117,885 )      25,204         (92,681 )
                                                              ----------  -----------       ----------
NET INCOME                                                    $ 312,350   $   (66,778)      $ 245,572
                                                              ----------  -----------       ----------
                                                              ----------  -----------       ----------
BASIC EARNINGS PER SHARE OF COMMON STOCK                      $    1.89   $      (.40)      $    1.49
DILUTED EARNINGS PER SHARE OF COMMON STOCK                    $    1.86   $      (.40)      $    1.46
AVERAGE NUMBER OF SHARES OUTSTANDING--BASIC.................  165,163,000     --            165,163,000
AVERAGE NUMBER OF SHARES OUTSTANDING--DILUTED...............  167,490,000     --            167,490,000
</TABLE>
 
  See Summary of Adjustments to Unaudited Consolidated Pro Forma Statements of
                                    Income.
 
                                       32
<PAGE>
     IMS HEALTH (ACCOUNTING SUCCESSOR TO COGNIZANT) UNAUDITED CONSOLIDATED
                         PRO FORMA STATEMENT OF INCOME
 
<TABLE>
<CAPTION>
                                                                 THREE MONTHS ENDED MARCH 31, 1998
                                                              ----------------------------------------
                                                                ($ AMOUNTS IN THOUSANDS, EXCEPT PER
                                                                            SHARE DATA)
                                                              HISTORICAL
                                                                 IMS       PRO FORMA        PRO FORMA
                                                              HEALTH(1)   ADJUSTMENTS       IMS HEALTH
                                                              ----------  -----------       ----------
<S>                                                           <C>         <C>               <C>
OPERATING REVENUE                                             $           $                 $
 
Operating Costs and Selling and Administrative Expense                              (4)
Depreciation and Amortization                                                       (4)
                                                              ----------  -----------       ----------
OPERATING INCOME                                                                    (4)
                                                              ----------  -----------       ----------
Non-Operating Income - Net                                                          (3)
                                                              ----------  -----------       ----------
Income Before Provision for Income Taxes
Provision for Income Taxes
                                                              ----------  -----------       ----------
NET INCOME                                                    $           $                 $
                                                              ----------  -----------       ----------
                                                              ----------  -----------       ----------
BASIC EARNINGS PER SHARE OF COMMON STOCK                      $           $                 $
DILUTED EARNINGS PER SHARE OF COMMON STOCK                    $           $                 $
AVERAGE NUMBER OF SHARES OUTSTANDING--BASIC.................
AVERAGE NUMBER OF SHARES OUTSTANDING--DILUTED...............
</TABLE>
 
                SUMMARY OF ADJUSTMENTS TO UNAUDITED CONSOLIDATED
                         PRO FORMA STATEMENTS OF INCOME
 
(1) As described in Note 22 to Cognizant's Consolidated Financial Statements
    included elsewhere in this Information Statement, on March 23, 1998
    Cognizant entered into two separate definitive agreements to acquire Walsh
    and PMSI. As these acquisitions do not either individually or in the
    aggregate meet the "significant subsidiary test" for purposes of pro forma
    disclosures, they have not been reflected in the above tables.
 
(2) The pro forma adjustments reflect the deconsolidation of Nielsen Media
    Research revenue, operating expense and operating income for the year ended
    December 31, 1997 as reflected in Note 19 to Cognizant's Consolidated
    Financial Statements included elsewhere in this Information Statement. As
    such, these amounts do not reflect certain adjustments made in the
    preparation of the Nielsen Media Research audited separate company financial
    statements included elsewhere in this Information Statement. Such
    adjustments include a tax provision for Nielsen Media Research on a
    separate-company basis and the allocation of corporate overhead expense.
 
(3) Non-Operating Income - Net includes the impact of interest income for the
    period presented related to proceeds from the repayment of existing
    intercompany liabilities to IMS HEALTH of $300 million at an assumed annual
    interest rate of 5.25%. See Nielsen Media Research Unaudited Consolidated
    Pro Forma Statement of Income included elsewhere in this Information
    Statement for the related impact of interest expense on $300 million of
    third-party debt.
 
(4) The pro forma adjustments reflect the deconsolidation of Nielsen Media
    Research revenue, operating expense and operating income for the three
    months ended March 31, 1998. As such, these amounts do not reflect certain
    adjustments made in the preparation of the Nielsen Media Research unaudited
    separate company financial statements included elsewhere in this Information
    Statement. Such adjustments include a tax provision for Nielsen Media
    Research on a separate-company basis and the allocation of corporate
    overhead expense.
 
                                       33
<PAGE>
IMS HEALTH (ACCOUNTING SUCCESSOR TO COGNIZANT) UNAUDITED CONDENSED CONSOLIDATED
                   PRO FORMA STATEMENT OF FINANCIAL POSITION
 
<TABLE>
<CAPTION>
                                                                                  MARCH 31, 1998
                                                                      ---------------------------------------
                                                                             ($ AMOUNTS IN THOUSANDS,
                                                                              EXCEPT PER SHARE DATA)
                                                                      HISTORICAL     PRO FORMA     PRO FORMA
                                                                      IMS HEALTH    ADJUSTMENTS   IMS HEALTH
                                                                      -----------  -------------  -----------
<S>                                                                   <C>          <C>            <C>
ASSETS
Current Assets
  Cash and Cash Equivalents.........................................                          (1)
  Accounts Receivable--Net..........................................
  Other Current Assets..............................................
Total Current Assets................................................
                                                                      -----------       ------    -----------
Marketable Securities and Other Investments.........................
Property, Plant and Equipment--Net..................................
 
Other Assets, Net
  Computer Software.................................................
  Goodwill..........................................................
  Other Assets......................................................
                                                                      -----------       ------    -----------
Total Other Assets
                                                                      -----------       ------    -----------
Total Assets........................................................                          (2)
                                                                      -----------       ------    -----------
                                                                      -----------       ------    -----------
 
Liabilities and Shareholders' Equity
 
Current Liabilities.................................................
Minority Interests..................................................
Other Liabilities...................................................
Total Liabilities...................................................                          (2)
                                                                      -----------       ------    -----------
Shareholders' Equity:...............................................
  Preferred Stock, par value $.01 per share,
    authorized--10,000,000 shares:
    outstanding--none...............................................
  Series Common Stock, par value $.01 per share,
    authorized--10,000,000 shares:
    outstanding--none...............................................
  Common Stock, par value $.01 per share, authorized
    --400,000,000 shares:
    outstanding --       shares.....................................
Capital Surplus.....................................................
Retained Earnings...................................................                          (1 (2)
Cumulative Translation Adjustment...................................
Unrealized Gains on Investments.....................................
Treasury Stock --       shares......................................                          (3)
                                                                      -----------       ------    -----------
    Total Shareholders' Equity......................................
 
Total Liabilities and Shareholders' Equity..........................
                                                                      -----------       ------    -----------
                                                                      -----------       ------    -----------
</TABLE>
 
    See Summary of Adjustments to Unaudited Condensed Consolidated Pro Forma
                        Statement of Financial Position.
 
                                       34
<PAGE>
                SUMMARY OF ADJUSTMENTS TO UNAUDITED CONSOLIDATED
                   PRO FORMA STATEMENT OF FINANCIAL POSITION
 
(1) In connection with the Distribution, Cognizant will borrow $300 million,
    which will be used to repay existing intercompany liabilities. This debt
    will be the obligation of Nielsen Media Research after the Distribution. The
    adjustment is reflected as an increase in cash and cash equivalents
    resulting from the proceeds of the debt.
 
(2) To reflect (for accounting purposes only) the dividend of the net assets of
    the Nielsen Media Research Business in connection with the Distribution.
 
(3) To reflect the elimination of treasury stock, which will be treasury shares
    of Nielsen Media Research after the Distribution.
 
                                       35
<PAGE>
          IMS HEALTH (ACCOUNTING SUCCESSOR TO COGNIZANT) MANAGEMENT'S
    DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
AS DESCRIBED UNDER "THE DISTRIBUTION--FORM OF TRANSACTION; BASIS OF
PRESENTATION", FOR FINANCIAL REPORTING PURPOSES, IMS HEALTH WILL BE TREATED AS
THE "ACCOUNTING SUCCESSOR" TO COGNIZANT. THEREFORE, THE HISTORICAL FINANCIAL
INFORMATION FOR IMS HEALTH INCLUDED HEREIN, AND MANAGEMENT'S DISCUSSION AND
ANALYSIS THEREOF SET FORTH BELOW, ARE THOSE OF COGNIZANT. THE FOLLOWING HAS BEEN
TAKEN FROM COGNIZANT'S 1997 ANNUAL REPORT TO SHAREHOLDERS AND THEREFORE INCLUDES
THE NIELSEN MEDIA RESEARCH BUSINESS FROM WHICH THE IMS HEALTH BUSINESS IS BEING
SEPARATED IN THE DISTRIBUTION. FOR A DISCUSSION OF THE HISTORICAL FINANCIAL
RESULTS OF NIELSEN MEDIA RESEARCH AS THOUGH IT WERE A STAND-ALONE ENTITY, SEE
"NIELSEN MEDIA RESEARCH MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
CONDITION AND RESULTS OF OPERATIONS" INCLUDED ELSEWHERE IN THIS INFORMATION
STATEMENT.
 
    On January 15, 1998, Cognizant announced a plan to separate into two
independent, publicly traded companies--IMS HEALTH and Nielsen Media Research.
The transaction is subject to final approval by Cognizant's Board of Directors
and obtaining a ruling from the Internal Revenue Service with respect to the
tax-free treatment of the transaction. IMS HEALTH consists of IMS International,
Inc. ("IMS"), Erisco, Inc. ("Erisco"), Cognizant Enterprises, Inc.
("Enterprises"), Cognizant Technology Solutions Corporation ("CTS"), SSJ K.K.
("Super Systems Japan"), and an equity investment in Gartner Group, Inc.
("Gartner").
 
  THREE MONTHS ENDED MARCH 31, 1998 COMPARED WITH THREE MONTHS ENDED MARCH 31,
  1997
 
    [TO COME]
 
  YEAR ENDED DECEMBER 31, 1997 COMPARED WITH YEAR ENDED DECEMBER 31, 1996
 
    In September 1997, Cognizant's voting interest in Gartner fell below 50% as
a result of the exercise of Gartner employee stock options and employee stock
purchases. Accordingly, in the third quarter, Cognizant deconsolidated Gartner
(the "Gartner Deconsolidation") as of January 1, 1997 and is accounting for its
ownership interest on the equity basis.
 
    Revenue in 1997 decreased 18.1% to $1,418,153 from $1,730,596 in 1996. This
decrease primarily reflects the impact of the Gartner Deconsolidation. Revenue
in 1997 increased by 10.7%, excluding Gartner revenue from both years and the
impact of a stronger U.S. dollar. The increase reflects double-digit revenue
performance at IMS and Nielsen Media Research, partially offset by Pilot
Software, Inc. ("Pilot"), which was sold in the third quarter of 1997. IMS
revenue growth benefited from strong performance of its core business services,
geographic expansion and excellent growth of its electronic territory management
product. The growth at Nielsen Media Research was driven by the addition of new
cable and broadcast customers, new products and services, and continued service
expansion to existing customers. The impact of a stronger U.S. dollar in 1997
decreased reported revenue by approximately 2.0%.
 
    Operating costs and selling and administrative expenses in 1997 were
$965,497 compared with $1,253,567 in 1996, a decrease of 23.0%. This decrease
primarily reflects the impact of the Gartner Deconsolidation. Excluding Gartner
expenses from both years and discontinued business units in 1996, operating
costs and selling and administrative expenses increased 7.1% to $965,497 in 1997
from $901,454 in 1996. This increase reflects Cognizant's increased spending on
new revenue growth initiatives which contributed to revenue growth of 10.7% in
1997. The impact of a stronger U.S. dollar in 1997 decreased operating costs and
selling and administrative expenses by approximately 2.0%.
 
    Operating income in 1997 decreased 2.3% to $335,342 from $343,168 in 1996.
This decrease primarily reflects the impact of the Gartner Deconsolidation.
Excluding Gartner operating income in both years and discontinued business units
in 1996, operating income increased 17.1% to $335,342 in 1997 from $286,332
 
                                       36
<PAGE>
in 1996. Operating income growth outpaced revenue growth primarily due to IMS's
ability to leverage its resources. The impact of a stronger U.S. dollar in 1997
decreased reported operating income by less than 1.0%. The sale of Pilot, which
had been generating an operating loss, enabled Cognizant to redeploy resources
to strategic technology investments, including the initiative to accelerate Year
2000 compliance. The impact on operating income of Year 2000 compliance was
$12,500 in 1997.
 
    Operating margin in 1997 was 23.6%, compared with 19.8% in 1996. Excluding
Gartner results from both years, and discontinued business units in 1996,
operating margin was 23.6% in 1997 compared with 21.9% in 1996.
 
    Non-operating income-net in 1997 was $94,893, compared with $5,853 in 1996.
The increase was due principally to recording $65,120 of Gartner equity income
in 1997 as a result of the Gartner Deconsolidation. Cognizant also recognized a
pre-tax unrealized gain on its investment in Gartner ("SAB 51 Gain") of $14,689
(included in other income/expense-net) corresponding to the net increase in the
underlying value of its investment in Gartner. In addition, non-operating
income-net for 1997 includes gains of $39,336 related to the disposition of
Enterprises' investment in WEFA Group, Inc. and a portion of its investment in
TSI International, Inc. and Aspect Development, Inc., and a $29,945 loss on the
sale of Pilot (included in gains from dispositions-net).
 
    Cognizant's consolidated 1997 effective tax rate was 27.4%, compared with
44.0% in 1996. Cognizant's lower tax rate in 1997 is due to the benefits of
global tax planning strategies.
 
    Net income in 1997 was $312,350, compared with $195,451 in 1996, an increase
of 59.8%. This increase principally reflects gains from dispositions-net and SAB
51 gains in 1997 and a reduction in the tax rate from 44.0% in 1996 to 27.4% in
1997 due to global tax-planning actions. It also reflects a one-time after-tax
acquisition-related charge of $32,778 for in-process research and development
costs associated with Gartner's acquisition of J3 Learning Corportion (the "J3
charge") in 1996. Excluding these items, net income increased 17.9% to $294,850
in 1997 from $250,079 in 1996.
 
RESULTS BY BUSINESS SEGMENT
 
    IMS
 
    The IMS segment consists of IMS, the leading global provider of market
information and decision-support services to the pharmaceutical and healthcare
industries, and Sales Technologies, Inc. ("Sales Technologies"), a leading U.S.
provider of automated sales support technologies to the pharmaceutical industry.
IMS revenue increased 8.4% in 1997 to $980,521 from $904,444 in 1996. This
growth reflected strong performance of core business services, new product
introductions, geographic expansion and strong revenue growth at Sales
Technologies. Excluding the impact of a stronger U.S. dollar, revenue growth was
11.4%. Operating income grew 14.0% to $265,351 in 1997 from $232,827 in 1996 due
to the factors described above. Operating income growth outpaced revenue growth
primarily due to IMS's ability to leverage its resources. Excluding the impact
of Year 2000 compliance and a stronger U.S. dollar in 1997, and discontinued
business units in 1996, operating income grew 18.2%.
 
    NIELSEN MEDIA RESEARCH
 
    Nielsen Media Research is the leading provider of television audience
measurement services, both nationally and locally, in the United States and
Canada. Nielsen Media Research revenue increased 12.3% in 1997 to $358,594 from
$319,404 in 1996. Revenue growth resulted from additional cable customers,
entrance into three new metered markets, an increase in the level of special
analyses and the continued growth of the Hispanic service. 1997 operating income
for the Nielsen Media Research segment was $107,732, compared with $99,461 in
1996, an increase of 8.3%. Excluding the impact of Year 2000 compliance,
operating income increased 11.0% to $110,413 in 1997, from $99,461 in 1996.
 
                                       37
<PAGE>
    GARTNER
 
    Gartner is the world's leading independent provider of research and analysis
on the computer hardware, software, communications and related information
technology industries. As discussed earlier, Cognizant's voting interest in
Gartner fell below 50% in September 1997. Accordingly, Cognizant has
deconsolidated Gartner and is accounting for its ownership interest on the
equity basis as of January 1, 1997. In 1997, the income statement impact of
Cognizant's ownership interest appears in non-operating income-net as Gartner
equity income and as a pre-tax unrealized gain on Gartner stock (included in
other income/expense-net). 1996 revenue and operating income for Gartner were
$424,382 and $60,114, respectively. Operating income was adversely affected by
the J3 charge. Excluding this item, operating income was $93,347.
 
    EMERGING MARKETS
 
    The Emerging Markets segment consists of Erisco, CTS, Enterprises, Pilot and
Super Systems Japan. In the third quarter, Cognizant sold Pilot and recorded a
non-cash pre-tax loss of $29,945. The segment had a 4.0% decrease in 1997
revenue to $79,038 from $82,366 in 1996, reflecting the sale of Pilot. Erisco,
CTS and Super Systems Japan posted high revenue growth through the addition of
new customers and new product introductions. The 1997 operating loss for the
segment was $9,752, compared with $12,903 in 1996, reflecting the sale of Pilot.
 
    RESULTS BY GEOGRAPHIC AREA
 
    Revenue in the United States decreased by 20.1% to $759,070 in 1997 from
$950,526 in 1996. This decrease is primarily the result of the Gartner
Deconsolidation. Excluding Gartner revenue in both years, 1997 revenue in the
United States increased by 12.0.%. The increase reflected Nielsen Media
Research's addition of new customers and service expansions; and new product
introductions and a strong performance of core business services by IMS,
partially offset by Pilot. Non-U.S. revenue decreased 15.5% to $659,083 in 1997
from $780,070 in 1996. The decrease is primarily the result of the Gartner
Deconsolidation. Excluding Gartner revenue in both years, 1997 revenue for
non-U.S. increased by 4.9%, and rose 9.4%, excluding the impact of a stronger
U.S. dollar. The non-U.S. revenue growth is due to new product introductions and
geographic expansion by IMS.
 
YEAR ENDED DECEMBER 31, 1996 COMPARED WITH YEAR ENDED DECEMBER 31, 1995
 
    Revenue in 1996 increased 12.2% to $1,730,596 from $1,542,340 in 1995.
Revenue growth was held down principally by the one-time impact in 1995 of
conforming fiscal quarters between Cognizant and Gartner ("the Gartner fiscal
quarter change") and by the impact of discontinued business units not in the
portfolio in 1996. Excluding these items, revenue growth was 14.8%. The increase
reflected continued high growth at Gartner, principally from the introduction of
new products and delivery options, and double-digit revenue performance at IMS
and Nielsen Media Research, partially offset by declining revenue at Pilot. The
growth at Nielsen Media Research was driven by the addition of new cable and
broadcast customers, new products and services and continued service expansion
to existing customers. The impact of a stronger U.S. dollar in 1996 decreased
revenue growth for Cognizant by approximately 1%.
 
    Operating costs and selling and administrative expenses in 1996 were
$1,253,567, compared with $1,242,331 in 1995, an increase of 0.9%. Operating
costs and selling and administrative expenses in 1995 include a non-recurring
charge of $90,070 ($49,268 after-tax) for costs principally associated with
asset impairments, software write-offs and contractual obligations that have no
future economic benefit; an incremental provision for postemployment benefit
expense of $32,500 ($17,778 after tax); the Gartner fiscal quarter change and
the impact of discontinued business units not in the portfolio in 1996.
Operating costs and selling and administrative expenses in 1996 also include the
J3 charge. Excluding the above-mentioned 1995 and 1996 items, operating costs
and selling and administrative expenses increased 13.4%
 
                                       38
<PAGE>
to $1,217,056 in 1996 from $1,072,980 in 1995, reflecting Cognizant's increased
spending in new revenue growth initiatives which contributed to revenue growth
of 14.8% in 1996. The impact of a stronger U.S. dollar in 1996 decreased
operating costs and selling and administrative expense growth by approximately
1%.
 
    Operating income in 1996 increased 121.9% to $343,168 from $154,677 in 1995.
The increase reflects the impact of the 1995 and 1996 items discussed above, as
well as 1995 restructuring expense of $12,800 ($7,002 after-tax). Excluding
these 1995 and 1996 items, operating income increased 25.5% to $379,679 in 1996
from $302,438 in 1995. Operating income growth outpaced revenue growth,
primarily due to Gartner's ability to take advantage of economies of scale and
IMS's ability to leverage its resources. The impact of a stronger U.S. dollar in
1996 decreased operating income growth by approximately 2%.
 
    Operating margin in 1996 was 19.8%, compared with 10.0% in 1995. The
increase reflects the impact of the 1995 and 1996 items described above.
Excluding these items in both years, operating margin was 21.9% in 1996,
compared with 20.1% in 1995.
 
    Non-operating income-net in 1996 was $5,853, compared with $7,880 in 1995, a
decrease of 25.7%. The decrease was due principally to lower disposition gains
in 1996, partially offset by lower minority interest expense related to Gartner
due to the J3 charge, and the impact in 1996 of a foreign exchange hedge gain.
 
    Cognizant's consolidated 1996 effective tax rate was 44.0%, compared with
45.3% in 1995. The tax rates were computed on a separate-company basis.
 
    Net income in 1996 was $195,451, compared with $88,881 in 1995, an increase
of 119.9%. Excluding the after-tax impact of the items discussed in operating
and non-operating income, net income increased 28.0% to $208,075 in 1996, from
$162,593 in 1995.
 
RESULTS BY BUSINESS SEGMENT
 
    IMS
 
    IMS revenue increased 8.3% in 1996 to $904,444 from $835,422 in 1995. The
growth reflected strong performance of core business services, new product
introductions and geographic expansion at IMS; and strong revenue growth at
Sales Technologies. Excluding the impact of a stronger U.S. dollar in 1996 and
discontinued business units in both years, revenue growth was 11.2%. Operating
income grew 160.6% to $232,827 in 1996 from $89,335 in 1995. The increase was
primarily due to the absence in 1996 of: $53,630 of the 1995 non-recurring
charge, $24,300 of the 1995 incremental provision for postemployment benefits
expense, and 1995 restructuring expense of $12,800. Excluding these items,
discontinued business units in 1996, and the impact of a stronger U.S. dollar,
operating income growth was 21.3%. Operating income growth outpaced revenue
growth primarily due to IMS's ability to leverage its resources.
 
    NIELSEN MEDIA RESEARCH
 
    Nielsen Media Research revenue increased 10.7% in 1996 to $319,404 from
$288,652 in 1995. Revenue growth resulted from the expansion of network
schedules, increased demand for special analyses, addition of cable customers
and entrance into two new metered markets. 1996 operating income for the segment
was $99,461, compared with $87,068 in 1995, an increase of 14.2%. The increase
was due, in part, to the absence in 1996 of $2,300 of the 1995 non-recurring
charge. Excluding this item, operating income growth for Nielsen Media Research
was 11.3%, reflecting the revenue factors described above.
 
    GARTNER
 
    Gartner, a majority-owned subsidiary in 1995 and 1996, had 1996 revenue of
$424,382, up 25.7% from $337,639 in 1995. Revenue growth was held down by the
impact of a Gartner fiscal quarter change.
 
                                       39
<PAGE>
Excluding this impact, revenue growth was 31.9%. This growth principally
reflected strong gains from symposium events, consulting and technology-based
training businesses.
 
    Operating income for Gartner increased 17.5% to $60,114 in 1996 from $51,180
in 1995. This growth was held down by the J3 charge. In addition, 1995 results
include $8,200 of the incremental provision for postemployment benefits expense
and the impact of the Gartner fiscal quarter change. Excluding these items,
operating income grew 67.2% to $93,347 in 1996 from $55,818 in 1995. The growth
in operating income was primarily due to revenue growth and Gartner's ability to
take advantage of economies of scale.
 
    EMERGING MARKETS
 
    Emerging Markets had a 2.2% increase in 1996 revenue to $82,366 from $80,607
in 1995. The increase reflected strong growth at CTS and the addition of new
customers at Erisco and Super Systems Japan, partially offset by declining
revenue at Pilot. The 1996 operating loss for the segment was $12,903, compared
with $18,366 in 1995. The 1996 operating loss was due to Pilot. 1995 results
include $16,940 of the 1995 non-recurring charge.
 
    RESULTS BY GEOGRAPHIC AREA
 
    Revenue in the United States increased by 13.9% to $950,526 in 1996 from
$834,786 in 1995. The increase reflected Gartner's introduction of new products
and delivery options, Nielsen Media Research's addition of new customers and
service expansions; and new product introductions by IMS, partially offset by
declining revenue at Pilot, the impact of the Gartner fiscal quarter change and
the absence of revenue from discontinued business units no longer in the
portfolio. Non-U.S. revenue increased 10.3% to $780,070 in 1996 from $707,554 in
1995, principally reflecting expansion into new global markets at IMS and
Gartner's increased subscription services revenue and geographic expansion.
Excluding the 1996 and 1995 items discussed previously and the impact of a
stronger U.S. dollar, non-U.S. revenue growth was 11.8%.
 
CHANGES IN FINANCIAL POSITION AT DECEMBER 31, 1997 COMPARED WITH DECEMBER 31,
  1996
 
    Cash and Cash Equivalents decreased to $318,435 at December 31, 1997 from
$428,520 at December 31, 1996, primarily due to the purchase of 9,074,600 shares
of Cognizant Common Stock and the absence of Gartner's cash balance as a result
of the Gartner Deconsolidation. Offsetting the above were strong operating cash
flows from IMS and Nielsen Media Research and proceeds from minority interest
financing in 1997.
 
    Accounts Receivable-Net decreased to $303,609 at December 31, 1997 from
$453,791 at December 31, 1996, principally due to the Gartner Deconsolidation.
 
    Investment in Gartner Group of $195,695 at December 31, 1997 represents the
accounting for Gartner on an equity basis, compared with consolidating Gartner
results in 1996.
 
    Goodwill decreased to $87,430 at December 31, 1997 from $251,483 at December
31, 1996, principally due to the Gartner Deconsolidation and the sale of Pilot.
 
    Accrued and Other Current Liabilities decreased to $212,944 at December 31,
1997 from $266,932 at December 31, 1996, principally due to the Gartner
Deconsolidation.
 
    Deferred Revenue decreased to $111,921 at December 31, 1997 from $292,970 at
December 31, 1996, principally due to the Gartner Deconsolidation.
 
    Minority Interests increased to $101,209 at December 31, 1997 from $90,635
at December 31, 1996, principally due to minority interest financing offset by
the Gartner Deconsolidation.
 
                                       40
<PAGE>
    Shareholders' Equity decreased to $801,570 at December 31, 1997 from
$872,613 at December 31, 1996, principally due to the purchase of Cognizant
Common Stock, payment of dividends and the change in cumulative translation
adjustment, partially offset by net income.
 
ADOPTION OF STATEMENTS OF FINANCIAL ACCOUNTING STANDARDS
 
    In 1995, Cognizant recorded a pre-tax charge of $90,070 that included an
impairment loss of $40,570 related to long-lived assets for which management,
having the authority to approve such business decisions, committed to a plan to
discontinue certain product lines and dispose of certain real property.
 
    Statement of Financial Accounting Standards ("SFAS") No. 121, "Accounting
for the Impairment of Long-Lived Assets and for Long-Lived Assets to be Disposed
of" requires that long-lived assets and certain intangibles be reviewed for
impairment whenever events or changes in circumstances indicate that the
carrying amount of an asset may not be recoverable. In general, this statement
requires recognition of an impairment loss when the sum of undiscounted expected
future cash flows is less than the carrying amount of such assets. The
measurement for such impairment loss is then based on the fair value of the
asset. While SFAS No. 121 affected the measurement of the impairment charge
noted above, it had no effect on the timing of recognition of the impairment.
 
    The 1995 charge principally reflected an impairment loss of $40,570
reflecting the revaluation of certain fixed assets, administrative and
production systems and other intangibles that were replaced or no longer used.
In addition, Cognizant recorded a charge of $20,300, principally related to the
write-off of certain computer software product lines at Pilot. (See Note 3 to
the Cognizant Consolidated Financial Statements.)
 
    In October 1995, the Financial Accounting Standards Board ("FASB") issued
SFAS No. 123 "Accounting for Stock-Based Compensation", which requires that
companies with stock-based compensation plans either recognize compensation
expense based on the fair value of options granted or continue to apply the
existing accounting rules and disclose pro forma net income and earnings per
share assuming the fair value method had been applied. Cognizant has chosen to
continue applying Accounting Principles Board Opinion No. 25 and related
interpretations in accounting for its plans. Accordingly, no compensation cost
has been recognized for the fixed stock option plans. If compensation cost for
Cognizant's stock-based compensation plans had been determined based on the fair
value at the grant dates for awards under those plans, consistent with the
method of SFAS No. 123, Cognizant's net income and earnings per share would have
been reduced to the pro forma amounts as disclosed in Note 12 to the Cognizant
Consolidated Financial Statements.
 
    In February 1997, the FASB issued SFAS No. 128, "Earnings per Share", which
simplifies existing computational guidelines, revises disclosure requirements
and increases the comparability of earnings-per-share data on an international
basis. Basic earnings per common share are based on the weighted average number
of common shares outstanding in each year. Diluted earnings per common share
assume that outstanding common shares were increased by shares issuable upon
exercise of those stock options for which market price exceeds exercise price,
less shares which could have been purchased by Cognizant with related proceeds.
This statement, which has been adopted by Cognizant, requires restatement of all
prior period earnings-per-share data presented. (See Note 2 to the Cognizant
Consolidated Financial Statements.)
 
    In June 1997, the FASB issued SFAS No. 130, "Reporting Comprehensive
Income", which requires that changes in comprehensive income be shown in a
financial statement that is displayed with the same prominence as other
financial statements. This statement is effective for periods beginning after
December 15, 1997. Cognizant is in the process of determining its preferred
disclosure format.
 
    In June 1997, the FASB issued SFAS No. 131, "Disclosures About Segments of
an Enterprise and Related Information", which changes the way public companies
report information about segments. SFAS
 
                                       41
<PAGE>
No. 131, which is based on the management approach to segment reporting,
includes requirements to report selected segment information quarterly and
entity-wide disclosures about products and services, major customers, and the
material countries in which the entity holds assets and reports revenues. This
statement is effective for financial statements for periods beginning after
December 15, 1997. Management has decided to early adopt this Statement. (See
Note 19 to the Cognizant Consolidated Financial Statements.)
 
    In February 1998, the FASB issued SFAS No. 132, "Employers' Disclosures
About Pensions And Other Postretirement Benefits", which changes current
financial statement disclosure requirements from those required under SFAS No.
87, "Employers' Accounting for Pensions", SFAS No. 88, "Employers' Accounting
for Settlements and Curtailments of Defined Benefit Pension Plans and for
Termination Benefits", and SFAS No. 106, "Employers' Accounting for
Postretirement Benefits Other Than Pensions." The statement does not change the
existing measurement or recognition provisions of SFAS Nos. 87, 88 or 106, and
is effective for the fiscal years beginning after December 15, 1997. Cognizant
is in the process of evaluating the disclosure requirements under this standard.
 
RESTRUCTURING
 
    In 1995, Cognizant recorded a $12,800 restructuring provision, primarily to
write off software for product lines that were discontinued at Sales
Technologies, a unit of IMS.
 
NON-U.S. OPERATING AND MONETARY ASSETS
 
    Cognizant operates globally, deriving a significant portion of its operating
income from non-U.S. operations. As a result, fluctuations in the value of
foreign currencies relative to the U.S. dollar may increase the volatility of
U.S. dollar operating results. In 1997, foreign currency translation decreased
U.S. dollar revenue growth and operating income growth by approximately 2% and
1%, respectively. In 1996, foreign currency translation decreased U.S. dollar
revenue growth and operating income growth by approximately 1% and 2%,
respectively.
 
    Non-U.S. monetary assets are maintained in currencies other than the U.S.
dollar, principally in Switzerland, Japan and Spain. Changes in the value of
these currencies relative to the U.S. dollar are charged or credited to
shareholders' equity. The effect of exchange rate changes during 1997 decreased
the U.S. dollar amount of cash and cash equivalents by $11,222.
 
LIQUIDITY AND CAPITAL RESOURCES
 
    At December 31, 1997, cash and cash equivalents totaled $318,435. At
December 31, 1996, cash and cash equivalents totaled $428,520 (including
$123,697 of Gartner cash). The decrease in cash of $110,085 was primarily due to
the Gartner Deconsolidation.
 
    Net cash provided by operating activities was $357,014, $352,023 and
$288,539 in 1997, 1996 and 1995, respectively. The increase of $4,991 in
operating activities in 1997 primarily reflected increased cash from operations,
improved collections of accounts receivable, the absence in 1997 of
restructuring payments, and a lower level of postemployment benefit and
non-recurring charge payments. These increases were partially offset by payment
of income taxes in 1997 of $72,827. The increase of $63,484 in net cash provided
by operating activities in 1996 primarily reflected increased cash from
operations, improved collections of accounts receivable and lower postemployment
benefit payments, partially offset by lower other working capital items
($75,459), lower deferred revenue ($30,512), higher income tax payments
($21,416) and payments related to the 1995 non-recurring charge of ($13,125).
 
    Net cash used in investing activities totaled $240,679 for 1997, compared
with $158,065 and $148,169 in 1996 and 1995, respectively. The increase in cash
usage in 1997 of $82,614 primarily reflected the change in Gartner to an equity
basis ($123,697), the absence of net proceeds from marketable securities
($27,601)
 
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<PAGE>
offset in part by higher proceeds from the sale of businesses and investments
($43,336) and the absence of purchases of Gartner common stock ($49,419). The
increase in cash usage in 1996 of $9,896 primarily reflected the purchase of
Gartner common stock, higher payments for acquisitions and equity investments,
offset in part by higher net proceeds for marketable securities and lower
additions to computer software.
 
    Net cash (used in)/provided by financing activities totaled ($215,198) for
1997, compared with $80,531 and ($116,095) in 1996 and 1995, respectively. The
increase in 1997 of cash used in financing activities primarily reflected the
purchase of shares of Cognizant Common Stock ($324,767) and dividend payments
($19,883); partially offset by minority interest financing $100,000 and proceeds
from exercise of stock options $26,409.
 
    The increase in 1996 cash provided by financing activities principally
reflected a net amount transferred from D&B as a result of Cognizant's
separation from D&B in the D&B spin-off, compared with net transfers to D&B in
1995 and long-term liabilities assumed with the D&B spin-off related to prior
business transactions, offset in part by the payment of short-term debt assumed
with the D&B spin-off. The increase in cash usage in 1995 of $10,035 primarily
reflected short and long-term debt payments, included in Other financing
activities.
 
    On February 18, 1997, Cognizant announced that its board of directors had
authorized a systematic stock repurchase program to buy up to 8,500,000 shares
of Cognizant's outstanding common stock. The stock repurchases are held in
treasury and reissued upon exercise of employee stock options. This program was
completed on September 5, 1997 at a total cost of $299,737.
 
    On October 21, 1997, Cognizant announced that its board of directors had
authorized a second systematic stock repurchase program to buy up to 10,000,000
shares of Cognizant's outstanding common stock. A portion of this program is
intended to cover option exercises. Through December 31, 1997, 574,600 shares
have been acquired at a total cost of $22,756.
 
    Cognizant's existing balances of cash, cash equivalents and marketable
securities, and cash generated from operations and debt capacity are expected to
be sufficient to meet Cognizant's long-term and short-term cash requirements
including dividends, acquisitions and the stock repurchase programs.
 
YEAR 2000
 
    Many existing computer systems and software applications use two digits,
rather than four, to record years, e.g., "98" instead of "1998." Unless
modified, such systems will not properly record or interpret years after 1999,
which could lead to business disruptions. This is known as the Year 2000 issue.
 
    Cognizant depends on systems and software both for its internal operations
as well as for the receipt of data used in its information products and the
transmission of those products to its customers. Cognizant began to address the
Year 2000 issue in 1996. It expects to complete upgrading or replacing affected
programs during 1998, with testing to be done during 1999. The operating income
impact of Year 2000 compliance was $12,500 in 1997. Based on current
information, the operating income impact of Year 2000 compliance in 1998 is
expected to be in the range of $50,000 to $55,000. Year 2000 compliance
expenditures for 1999, the final year of the project, are in the process of
being determined; however, they are expected to be significantly less than in
1998. These costs are being expensed as incurred.
 
MARKET RISK
 
    Cognizant's primary market risks are the impact of foreign exchange
fluctuations on non-dollar-denominated revenue and price fluctuations on equity
securities.
 
    In the normal course of business, Cognizant employs established practices
and procedures to manage its exposure to fluctuations in the value of foreign
currencies using a variety of financial instruments.
 
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<PAGE>
    Cognizant's objective in managing the exposure to foreign currency
fluctuations is to reduce earnings and cash flow volatility associated with
foreign exchange rate changes to allow management to focus its attention on its
core business activities. Accordingly, Cognizant enters into various contracts
which change in value as foreign exchange rates change to protect the value of a
portion of committed and anticipated foreign currency revenues and
non-functional currency assets and liabilities. The principal currencies hedged
are the Japanese yen, Swiss franc, German mark and Italian lira. By policy,
Cognizant maintains hedge coverage between minimum and maximum percentages of
its anticipated foreign exchange exposures over the next year. The gains and
losses on these hedges offset changes in the value of the related exposures.
 
    It is Cognizant's policy to enter into foreign currency transactions only to
the extent necessary to meet its objectives as stated above. Cognizant does not
enter into foreign currency transactions for speculative purposes.
 
    The fair value of Cognizant's hedging instruments are subject to change as a
result of potential changes in foreign exchange rates. The potential loss in
fair value for foreign exchange rate-sensitive instruments, based on a
hypothetical 10% decrease in the value of U.S. dollar or, in the case of
non-dollar-related instruments, the currency being purchased, was $2,600 at
December 31, 1997. The estimated fair values of the foreign exchange risk
management contracts were determined based on quoted market prices.
 
    Cognizant also invests in marketable securities and is subject to equity
price risk. These investments are classified as available for sale and
consequently, carried at fair value, with unrealized gains and losses, net of
income taxes, reported as a component of shareholders' equity. Cognizant does
not hedge this market risk exposure. A 10% decline in the market price of these
equity securities would cause the fair value of the securities to decrease by
$4,800 at December 31, 1997.
 
DIVIDENDS
 
    The payment and level of cash dividends by Cognizant are subject to the
discretion of the Board of Directors of Cognizant. Although Cognizant has
declared and anticipates that it will declare quarterly dividends in the range
of 5% to 8% of net earnings, dividend decisions will be based on, and affected
by, a number of factors, including the operating results and financial
requirements of Cognizant.
 
                                       44
<PAGE>
                              IMS HEALTH BUSINESS
 
    AS DESCRIBED UNDER "THE DISTRIBUTION--FORM OF TRANSACTION; BASIS OF
PRESENTATION", FOR FINANCIAL REPORTING PURPOSES, IMS HEALTH WILL BE TREATED AS
THE "ACCOUNTING SUCCESSOR" TO COGNIZANT. THEREFORE, THE HISTORICAL FINANCIAL
INFORMATION INCLUDED HEREIN WITH RESPECT TO IMS HEALTH IS THAT OF COGNIZANT.
HOWEVER, WHILE THE FOLLOWING DESCRIPTION OF THE IMS HEALTH BUSINESS IS DERIVED
FROM THE COGNIZANT FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 1997, IT INCLUDES
ADDITIONAL INFORMATION ON THE IMS HEALTH BUSINESS AND IT DOES NOT INCLUDE A
DESCRIPTION OF THE NIELSEN MEDIA RESEARCH BUSINESS FROM WHICH THE IMS HEALTH
BUSINESS IS BEING SEPARATED IN THE DISTRIBUTION. FOR A DESCRIPTION OF THE
NIELSEN MEDIA RESEARCH BUSINESS, SEE "NIELSEN MEDIA RESEARCH BUSINESS" INCLUDED
ELSEWHERE IN THIS INFORMATION STATEMENT.
 
I.M.S. INTERNATIONAL
 
GENERAL
 
    IMS provides information and decision-support services to the pharmaceutical
and healthcare industries worldwide. These services broadly include market
research services, sales management services, and other professional, software,
direct marketing and research and development services. IMS provides information
services covering 94 countries and maintains offices in 74 countries on six
continents, with 64% of total revenue generated outside the United States in
1997. In 1997, IMS continued its expansion in developing markets in Eastern
Europe, Asia and Sub-Saharan Africa. Revenue in 1997 increased by 16% over 1996
in these developing markets.
 
MARKET RESEARCH SERVICES
 
    Market research services represented approximately 41% of IMS's worldwide
revenue in 1997. The principal market research services are syndicated
pharmaceutical, medical, hospital, promotional, prescription and self-medication
audits. Market research services are utilized by clients for various strategic
and tactical purposes, including analyzing market shares, therapeutic
prescribing trends and price movements at the national and subnational levels.
The information reported in these services is generated or derived from data
collected primarily from pharmaceutical manufacturers, pharmaceutical
wholesalers, pharmacies, hospitals and doctors. Market research services are
delivered to clients via hardcopy reports, CD-ROMs, computer on-line services
and magnetic media for use in client computer systems. IMS's principal market
research services are as follows:
 
    - PHARMACEUTICAL AUDITS. These audits measure the sale of pharmaceutical
      products into pharmacies, supplemented in some countries by data collected
      from prescribing physicians, retail chains and discount stores. These
      audits contain data projected to national estimates, showing product sales
      by therapeutic class broken down by package size and dosage form. IMS
      publishes pharmaceutical audits in over 84 countries.
 
    - MEDICAL AUDITS. These audits are based on information collected from
      panels of practicing physicians and contain projected national estimates
      of the number of consultations for each diagnosed disease with details of
      the therapy prescribed. These audits also analyze the use physicians make
      of individual drugs by listing the diseases for which they are prescribed,
      the potential therapeutic action the physician is expecting, other drugs
      prescribed at the same time, and estimates of the total number of drugs
      used for each disease. IMS publishes medical audits in over 47 countries.
 
    - HOSPITAL AUDITS. These audits contain data projected to national estimates
      and show the sale of pharmaceutical products to hospitals by therapeutic
      class. Related reports provide audits of laboratory diagnostic supplies,
      hospital supplies, and hospital records. IMS publishes hospital audits for
      37 countries.
 
    - PROMOTIONAL AUDITS. These audits measure pharmaceutical promotion for a
      particular market, including sales-force promotion and journal and mail
      advertising, based on information received
 
                                       45
<PAGE>
      from panels of physicians and from monitoring medical journals and direct
      mail. IMS publishes promotional reports for 27 countries.
 
    - PRESCRIPTION AUDITS. These audits analyze the rate at which drugs move out
      of the pharmacy and into the hands of the consumer, and measure both what
      is prescribed by physicians and what is actually dispensed at the
      pharmacy. IMS publishes prescription audits in over 13 countries.
 
    - SELF-MEDICATION REPORTS. These reports provide detailed product movement,
      market share and pricing information for over-the-counter, personal care
      and patient care products. IMS publishes self-medication reports in 22
      countries.
 
    - OTHER MARKET RESEARCH REPORTS. These include managed care reports which
      offer an array of information to quantify the effects of managed care on
      the pharmaceutical and healthcare industry; personal care reports which
      measure the sale of healthcare accessories, wound care and dietetic aids;
      and veterinary reports which analyze the animal care pharmaceutical
      market. IMS has developed, in certain countries, disease and treatment
      information at the patient level (which information is not identifiable to
      any individual patient) that gives participants in the healthcare industry
      new insights into the treatment of diseases. The availability, scope and
      frequency of the foregoing reports vary on a country-by-country basis.
 
SALES MANAGEMENT SERVICES
 
    Sales management services represented approximately 45% of IMS's worldwide
revenue in 1997. Sales management services include sales territory reports,
prescription tracking reports, call reporting services and doctor profiling
services. These reports are customized for each pharmaceutical client and are
used principally by pharmaceutical manufacturers to measure and forecast the
effectiveness and efficiency of sales representatives and to target the
marketing and sales efforts of a client's salesforce. IMS's principal sales
management services are as follows:
 
    - SALES TERRITORY REPORTING SERVICES. Sales territory reporting is the
      principal sales management service offered by IMS to its pharmaceutical
      clients. Sales territory reports can be precisely tailored for each
      client, and measure the sales of a client's own products and those of
      competitors within specified geographical configurations. These reports
      are designed to provide marketing and sales managers with a reliable
      measurement of each salesperson's activity and effectiveness in his or her
      sales territory, and therefore are used by clients, among other things,
      for determining sales force compensation. Data reported for multiple
      territories are used for applications such as resource allocation,
      territory alignment, market analyses and distribution management.
      Depending on the particular market, sales territory reports are available
      to clients on a weekly, monthly or quarterly basis. In the United States,
      sales territory reports from IMS's DDD service allow pharmaceutical
      clients to track the flow of their products and those of their competitors
      to various levels of geography and channels of distribution. The DDD
      database contains a virtual census of sales of pharmaceutical products
      through all distribution channels, including direct sales by
      pharmaceutical manufacturers and indirect sales through drug wholesalers,
      mail order distributors, warehousing chains and other market participants.
      IMS provides sales territory reporting services in 34 countries.
 
    - PRESCRIPTION TRACKING REPORTING SERVICES. Prescription tracking reporting
      services are designed to monitor prescription activity and to track the
      movement of pharmaceutical products out of pharmacies. Prescription
      tracking services are used by pharmaceutical companies to facilitate
      product marketing at the prescriber level. In the United States, the
      Xponent service monitors prescription activity at the retail pharmacy and
      mail order outlet level, and uses a patented statistical methodology to
      project the prescription activity of over one million individual
      prescribers on a monthly basis. In Europe, IMS has begun rolling out
      Xtrend, a prescription database service. The Xtrend database is built from
      prescription data collected from retail pharmacies and coding centers
      which are linked to the geographical area in which the prescription was
      written, and where permissible under local data privacy laws, to
      individual prescribers. Xtrend is currently available in
 
                                       46
<PAGE>
      the United Kingdom, Germany, Belgium, and the Netherlands, and is expected
      to be launched in Italy, Spain, and France in 1998. In order to protect
      patient privacy, IMS does not collect any data with patient-identifiable
      information.
 
    - CALL REPORTING SERVICES. Call reporting services further assist
      pharmaceutical companies in the management of their sales forces. IMS's
      call reporting services aid a pharmaceutical client's sales
      representatives and management to record, assess, and organize their call
      activity to physicians and other healthcare providers. IMS provides call
      reporting services in over 10 countries.
 
    Sales management services are made available to clients and their sales
representatives and management via hardcopy reports, CD-ROMs, computer on-line
services, and magnetic media for use in client computer systems. IMS's data
delivery systems assist clients in maximizing efficiency by aiding in the
setting of sales targets and calculation of sales bonuses; giving fast access to
sales data and permitting more sophisticated analyses; improving call reporting;
and improving communication between sales management and their sales forces. In
the United States, IMS has launched Xplorer, a customized client-server decision
support system that allows a client to store large amounts of data at its own
site and integrate its own internal sales and marketing data with IMS data and
other external data. IMS also provides clients with customized data warehouse
tools. In 1997, IMS released Xplorer.Web, which is a web-type browser front-end
to the Xplorer system.
 
VALUE-ADDED SERVICES
 
    The remaining 14% of IMS's 1997 revenue was derived primarily through
professional consulting, software, direct marketing, and research and
development services. IMS provides pharmaceutical and other clients with a range
of value-added services that are used (i) to study specific issues and trends in
the pharmaceutical marketplace and the healthcare industry, (ii) to evaluate the
effectiveness of marketing programs, (iii) to analyze components of a product
marketing program at any stage of its implementation, and (iv) for consultancy
in optimizing strategy, marketing programs and product commercialization. These
services are as follows:
 
    - IMS GLOBAL SERVICES. IMS's Global Services unit is based in the United
      Kingdom and provides global level information services and strategic
      solutions to pharmaceutical clients operating on a multinational level.
      Global Services' core service offering, MIDAS, is a multinational
      integrated data analysis tool and on-line system which harnesses IMS's
      worldwide databases and is used by the pharmaceutical industry to assess
      world-wide pharmaceutical information. MIDAS gives clients on-line access
      to IMS-compiled pharmaceutical, medical and chemical statistics. Using
      MIDAS, clients are able to select information from the national databases
      compiled by IMS and produce statistical reports in the format the client
      requires. IMS Global Services also publishes various in-depth reviews of
      the worldwide pharmaceutical marketplace and provides custom market
      research services.
 
    - PROFESSIONAL CONSULTING SERVICES. IMS's professional consulting services
      are provided to assist clients in the analysis and evaluation of market
      trends, strategies and tactics, and to assist in the development and
      implementation of customized software applications and data warehouse
      tools. In the United States, IMS provides professional consulting services
      through its divisions The Plymouth Group and the Decision Support
      Consulting Group. The Plymouth Group provides a range of custom market
      research and consulting services on the pharmaceutical and healthcare
      marketplace. The Decision Support Consulting Group assists clients in
      designing customized decision support systems based on a variety of
      cutting-edge technologies which enable clients to optimize IMS data more
      rapidly and effectively in their decision-making process. Outside of the
      United States, a variety of consulting services is generally offered on a
      country-by-country basis.
 
    - SOFTWARE SERVICES. IMS's software services include the development,
      licensing and implementation of healthcare information systems, including
      electronic sales territory management systems provided by IMS's Sales
      Technologies, Inc. ("Sales Technologies") operating unit. Sales
      Technologies is
 
                                       47
<PAGE>
      a leading provider in the United States of automated sales support
      technologies to the pharmaceutical industry. Sales Technologies' core
      product, Cornerstone, is a software suite which provides pharmaceutical
      salespeople with a comprehensive tool that supports key selling
      requirements, including profiling, targeting, activity reporting, team
      selling and sample management. In October 1997, Sales Technologies entered
      into a joint venture agreement with Valuation, Ltd. ("Valuation") whereby
      Valuation will be the exclusive value-added reseller of Cornerstone in
      Europe. IMS's Amfac/Chemdata business unit is a significant provider of
      pharmacy dispensing and point-of-sales software systems to retail
      pharmacies in Australia.
 
    - DIRECT MARKETING SERVICES. IMS engages in two direct marketing businesses
      located in the United States and Australia. Clark-O'Neill, Inc.
      ("Clark-O'Neill"), a wholly-owned subsidiary, represents the core of IMS's
      direct marketing business. Clark-O'Neill's services include sample
      distribution, pharmaceutical field force support services, publication
      circulation management, direct mail, telemarketing projects utilizing
      physicians and other healthcare professionals, and other customized
      promotion programs. IMS's Permail business unit provides direct marketing
      services in Australia.
 
    - RESEARCH AND DEVELOPMENT SERVICES. IMS's research and development services
      provide clients with information and workstation tools intended to improve
      the effectiveness and speed of clinical research and subsequent regulatory
      approvals. IMS's regulatory affairs database, IDRAC, covers the European
      Union and the United States and guides users through the drug development
      and registration process. IMS also owns a 40% equity interest in DataEdge,
      an information provider to the pharmaceutical industry on clinical trial
      design and implementation.
 
DATA SUPPLIERS
 
    Over the past four decades, IMS has developed strong relationships with its
data suppliers in each market in which it operates. As the supply of
pharmaceutical data is critical to IMS's business, IMS devotes significant human
and financial resources to its data collection efforts and in many cases has
historical connections with the trade associations and professional associations
involved. In the United States, IMS America and Clark-O'Neill each have been
designated as database licensees by the American Medical Association ("AMA") for
use and sublicensing of the AMA's physician database.
 
CUSTOMERS
 
    Sales to the healthcare industry accounted for substantially all of IMS's
revenue in 1997. All major pharmaceutical companies are customers of IMS, and
many of the companies subscribe to reports and services in several countries.
IMS's customer base is broad in scope and enables it to avoid dependence on any
single customer. None of IMS's customers accounted for more than 10% of its
gross revenues in 1997.
 
COMPETITION
 
    While no competitor provides the geographical reach or breadth of IMS's
services, IMS does have competition in each of the countries in which it
operates from other information services companies, as well as the in-house
capabilities of its customers. Generally, competition has arisen on a
country-by-country basis. In the United States, certain of IMS's sales
management services, including its sales territory reports, representing
approximately 60% of the annual revenue of the IMS America unit, compete with
the services of National Data Corp. Quality, completeness and speed of delivery
of information services and products are the principal methods of competition in
IMS's market.
 
ERISCO, INC.
 
    Erisco has been a leading provider of application software and services
serving the healthcare industry for over two decades. Erisco's legacy system
solutions, ClaimFacts and GroupFacts, were designed to help indemnity insurance
carriers, third party administrators and self-administered corporations manage
the administration of group health and life insurance products.
 
                                       48
<PAGE>
    Erisco's primary offering, Facets, is a client/server system which
integrates advanced technology with clinical information to help managed care
organizations ("MCOs") provide high-quality, cost-effective solutions in their
marketplace. Primary markets include health maintenance organizations, preferred
provider organizations, Blue Cross/Blue Shield organizations, managed-indemnity
carriers and specialized MCOs.
 
    Erisco's strategic growth will come from Facets sales to the MCO market.
Ongoing change in healthcare has had a significant impact on this market
segment, resulting in the migration of plan members from indemnity-oriented
plans to managed care. By the year 2000, managed health plan membership in the
U.S. is estimated to surpass the 100,000,000 mark. Erisco believes that market
growth and the limitations of aging information systems will increase the demand
for sophisticated managed care applications.
 
    Within the high-growth managed care market segment, Erisco competes with
three other information systems vendors -- HBOC/Amisys, Computer Sciences
Corporation and Health Systems Design. Competition is principally based on
reputation, functionality, ease of use and service.
 
    Erisco also extends its Facets business solution through a service bureau
offering for low-volume customers, and through alliances with strategic,
complementary systems partners, and systems integration and implementation
consultants.
 
COGNIZANT TECHNOLOGY SOLUTIONS CORPORATION
 
SERVICES
 
    CTS delivers high-quality, cost-effective, full life cycle solutions to
complex software development and maintenance problems. Its services include the
following:
 
    - APPLICATION DEVELOPMENT SERVICES. CTS develops new applications for IBM
      mainframe, client/server architectures and other emerging technology
      environments. CTS follows either of two approaches including (i) full life
      cycle application development in which CTS assumes total start-to-finish
      responsibility and accountability for analysis, design, implementation and
      testing of systems, and (ii) cooperative development in which CTS's
      employees work with a customer's in-house information technology ("IT")
      personnel to analyze, design, implement and test new systems.
 
    - APPLICATION MAINTENANCE SUPPORT SERVICES. CTS provides services to ensure
      that a customer's legacy software systems are operational and responsive
      to end-users' changing needs. In doing so, CTS is often able to introduce
      process enhancements and improve service levels to customers requesting
      modifications and on-going support.
 
    - YEAR 2000 COMPLIANCE SERVICES. With the year 2000 approaching, computer
      software systems that were not designed to process dates correctly in the
      next century are expected to fail. Organizations rely on mission-critical
      software systems and must either repair the problem presented by the Year
      2000 issue or replace legacy systems. CTS uses its proprietary Year 2000
      toolset and methodology, Century Transition Services 2000, to provide a
      cost-effective total solution for all phases of a Year 2000 compliance
      project. The Century Transition Services 2000 methodology covers the
      entire life cycle of a Year 2000 compliance project and comprises a seven
      step process: (i) inventory preparation, (ii) impact analysis, (iii)
      strategy and design, (iv) code change and data migration, (v) unit, system
      and acceptance testing, (vi) implementation and (vii) post-implementation
      support. The Century Transition Services 2000 toolset covers a wide array
      of common programming languages and environments including many
      client/server environments. CTS is thus able to provide complete solutions
      across a larger portion of customers' systems.
 
    - EUROCURRENCY COMPLIANCE SERVICES. The upcoming monetary union of the
      European Community presents a significant opportunity for CTS as computer
      systems which deal with any European denominated currency will need to be
      modified to handle local currency and Eurocurrency transactions. CTS has
      begun to address the Eurocurrency compliance problem and has established
 
                                       49
<PAGE>
      a dedicated practice to focus on this problem. CTS believes that portions
      of its Year 2000 toolset and methodology can be extended to efficiently
      address the European currency compliance needs of customers.
 
    - TESTING AND QUALITY ASSURANCE SERVICES. Testing and quality assurance is a
      critical aspect of any software development activity. CTS works with
      customers to better define the quality assurance processes which are in
      use by the customers' in-house IT departments. CTS utilizes its quality
      assurance expertise to ensure better quality software through fundamental
      process improvements.
 
    - RE-HOSTING AND RE-ENGINEERING SERVICES. Through CTS's re-hosting and
      re-engineering service offerings, CTS works with customers to migrate
      systems based on legacy computing environments to newer,
      open-systems-based platforms and client/server architectures.
 
CUSTOMERS
 
    CTS began operations in 1994 as an in-house technology development center
for D&B, the former parent of Cognizant, and has only served third-party
customers for a limited time. While CTS has increased the percentage of revenues
generated from third parties, 41.8% of CTS's 1997 revenue was generated from
Cognizant and its current affiliates and an additional 31.9% of CTS's 1997
revenue was generated from companies previously affiliated with D&B. During
1997, CTS's five largest third-party customers (which include certain former
affiliates) accounted for 36.6% of revenues. CTS believes that demand for Year
2000 compliance services will diminish after the Year 2000, as many solutions
are implemented and tested. A core element of CTS's growth strategy is to use
the business relationships it has developed and the knowledge of its customers'
computer systems obtained in providing Year 2000 services to generate additional
projects for these customers. There can be no assurance, however, that CTS will
be successful in generating demand for other services from its Year 2000
customers.
 
COMPETITION
 
    The IT services market includes a large number of participants, is subject
to rapid changes and is highly competitive. In certain markets in which CTS
competes, such as the Year 2000 compliance market, there are no significant
barriers to entry. Many of CTS's competitors have significantly greater
financial, technical and marketing resources and greater name recognition than
CTS. The principal competitive factors affecting the markets for CTS's services
include (i) performance and reliability, (ii) quality of technical support,
training and services, (iii) responsiveness to customer needs, (iv) reputation,
experience and financial stability and (v) competitive pricing of services.
 
COGNIZANT ENTERPRISES, INC.
 
    Enterprises invests in emerging and established businesses, primarily in the
health care information industry. It invests as a limited partner in Information
Partners Capital Fund, Information Associates, L.P. and Information Associates
II, L.P., venture capital limited partnerships, as well as through direct
investments.
 
SSJ K.K.
 
    Super Systems Japan, an entity based in Japan, markets financial application
software products and services tailored for the Japanese market.
 
FOREIGN OPERATIONS
 
    As indicated above, IMS HEALTH and its subsidiaries engage in a significant
portion of their business outside of the United States. IMS HEALTH's foreign
operations are subject to the usual risks inherent in carrying on business
outside of the United States, including fluctuation in relative currency values,
possible nationalization, expropriation, price controls and other restrictive
government actions.
 
                                       50
<PAGE>
IMS HEALTH believes that the risk of nationalization or expropriation is reduced
because its products are software, services and information, rather than the
production of products which require manufacturing facilities or the use of
natural resources.
 
INTELLECTUAL PROPERTY
 
    IMS HEALTH owns and controls a number of patents, trade secrets,
confidential information, trademarks, trade names, copyrights and other
intellectual property rights which, in the aggregate, are of material importance
to its business. Management believes that the "IMS" name and related names,
marks and logos are of material importance to IMS HEALTH. IMS HEALTH is licensed
to use certain technology and other intellectual property rights owned and
controlled by others, and similarly, other companies are licensed to use certain
technology and other intellectual property rights owned and controlled by IMS
HEALTH. The technology and other intellectual property rights licensed by IMS
HEALTH are of importance to its business, although management of IMS HEALTH
believes that IMS HEALTH's business, as a whole, is not dependent upon any one
intellectual property or group of such properties.
 
    The names of IMS HEALTH's and its subsidiaries' products and services
referred to herein are trademarks, service marks, registered trademarks or
registered service marks owned by or licensed to IMS HEALTH or one of its
subsidiaries.
 
EMPLOYEES
 
    As of December 31, 1997, IMS HEALTH had approximately 7,200 employees in
approximately 70 countries. Of these, approximately 2,500 are located in the
United States, and none of these is represented by labor unions. In the
Netherlands, Italy, Spain, France and Germany, IMS has Workers' Councils, which
are a legal requirement in those countries. IMS has also established a European
Workers' Council as required under European Union regulations. IMS HEALTH
believes that, generally, relations with its employees are good and have been
maintained in a normal and customary manner.
 
PROPERTIES
 
    IMS HEALTH's real property is geographically distributed to meet sales and
operating requirements worldwide. Most of IMS HEALTH's properties are leased
from third parties. IMS HEALTH's properties are generally considered to be both
suitable and adequate to meet current operating requirements and virtually all
space is being utilized.
 
STRATEGY
 
    IMS HEALTH believes that the expanding need for efficient quality healthcare
will generate increasing demand for healthcare information services. IMS
HEALTH's strategy is to capitalize on the significant new growth opportunities
in the industry by expansion of its core business through internal investment
and carefully targeted acquisitions in its areas of strength.
 
    Key areas for internal investment and development include:
 
    - New product and service innovations, such as the launch of the Xtrend
      prescription tracking service in Europe;
 
    - Market extension, by introducing existing products to new markets through
      IMS HEALTH's global distribution channels;
 
    - Geographic expansion, including building upon IMS HEALTH's initial
      presence in China, India and Poland and planned expansion in Sri Lanka,
      Nepal, Zimbabwe and Kenya; and
 
    - Expansion beyond the traditional customer base to provide new products and
      services within the healthcare industry.
 
                                       51
<PAGE>
    Acquisitions are expected to help drive future growth. However, acquisitions
will be measured against clearly defined criteria:
 
    - Target companies should be within the healthcare information services
      market; and
 
    - Target companies should be logical extensions of IMS HEALTH's businesses
      into related areas.
 
RECENT DEVELOPMENTS
 
    On March 23, 1998, Cognizant announced the signing of definitive agreements
to acquire Walsh. which develops and markets leading-edge sales force automation
systems for pharmaceutical companies, and PMSI, which provides information
services to pharmaceutical and healthcare companies in the U.S., Europe and
Japan. Under terms of the agreements, Walsh shareholders will receive .3041
shares of Cognizant Common Stock per Walsh share (or, based on a Cognizant share
price of $51.792, consideration of approximately $167 million), and PMSI
shareholders will receive .2800 shares of Cognizant Common Stock per PMSI share
(or, based on a Cognizant share price of $51.792, consideration of approximately
$180 million). The number of shares of Cognizant Common Stock to be issued in
connection with each of the Acquisitions is subject to a collar adjustment based
on the price of Cognizant Common Stock during a period prior to the closing of
the Acquisitions. Currently Walsh and PMSI have approximately 10.6 million and
approximately 12.4 million shares outstanding, respectively. Cognizant expects
to issue approximately 6.7 million shares from treasury stock to consummate the
Acquisitions. In the event the Acquisitions are not completed prior to the
Record Date, Walsh and PMSI shareholders will receive, in lieu of Cognizant
Common Stock, IMS HEALTH Common Stock pursuant to a formula designed to
recalibrate the collar computations based on the relative value of IMS HEALTH to
the total value of IMS HEALTH and Nielsen Media Research following the
Distribution. The Acquisitions, which have been independently authorized by the
Cognizant, Walsh and PMSI Boards of Directors, are subject to approval by Walsh
and PMSI shareholders, the receipt of regulatory and other required approvals
and consents and customary closing conditions. Each of the Acquisitions is an
independent transaction and neither is conditioned upon the consummation of the
other or upon the consummation of the Distribution. In connection with the
Distribution, Walsh and PMSI will become part of IMS HEALTH.
 
    On April 9, 1998, CTS filed a registration statement with the SEC with
respect to an underwritten offering of 2,917,000 shares of Class A Common Stock,
par value $0.01 per share, of CTS (3,354,550 if the underwriters' over-allotment
option granted by Cognizant is exercised in full). Of such shares, 2,500,000 are
to be offered by CTS and 417,000 shares are to be offered by Cognizant.
Following the offering, Cognizant will own 66.7% of the outstanding common stock
of CTS and approximately 95.3% of the combined voting power of CTS's outstanding
common stock. The initial offering price is estimated to be between $11.00 and
$13.00 per share. A portion of the proceeds to be received by CTS in the
offering will be used to repay an intercompany balance. The registration
statement has not become effective under the Securities Act. If the offering is
not completed prior to the Distribution Date, IMS HEALTH will be the selling
stockholder in the offering.
 
LEGAL PROCEEDINGS
 
    IMS HEALTH and its subsidiaries are involved in legal proceedings and
litigation arising in the ordinary course of business. In the opinion of
management, the outcome of all current proceedings, claims and litigation, if
decided adversely, could have a material effect on quarterly or annual operating
results or cash flows when resolved in a future period. However, in the opinion
of management, these matters will not materially affect IMS HEALTH's
consolidated financial position.
 
    In addition, on July 29, 1996, IRI filed a complaint in the United States
District Court for the Southern District of New York, naming as defendants D&B,
A.C. Nielsen Company and IMS.
 
    The complaint, as subsequently amended, alleges various violations of the
United States antitrust laws, including alleged violations of Sections 1 and 2
of the Sherman Act. The complaint also alleges a
 
                                       52
<PAGE>
claim of tortious interference with a contract and a claim of tortious
interference with a prospective business relationship. These latter claims
relate to the acquisition by defendants of SRG. IRI alleges that SRG violated an
alleged agreement with IRI when it agreed to be acquired by defendants and that
the defendants induced SRG to breach that agreement.
 
    IRI's complaint alleges damages in excess of $350 million, which amount IRI
has asked to be trebled under the antitrust laws. IRI also seeks punitive
damages in an unspecified amount. Defendants have filed answers denying the
material allegations in IRI's complaint and amended complaint, and A.C. Nielsen
Company has filed a counterclaim alleging that IRI has made false and misleading
statements about its services and commercial activities.
 
    In connection with the 1996 Distribution, with respect to the IRI Action,
D&B, ACNielsen (the parent company of A.C. Nielsen Company) and Cognizant
entered into the Indemnity and Joint Defense Agreement pursuant to which they
agreed (i) to certain arrangements allocating IRI Liabilities that may arise out
of or in connection with the IRI Action, and (ii) to conduct a joint defense of
such action. In particular, the Indemnity and Joint Defense Agreement provides
that ACNielsen will assume exclusive liability for IRI Liabilities up to the ACN
Maximum Amount, and that Cognizant and D&B will share liability equally for any
amounts in excess of the ACN Maximum Amount. The ACN Maximum Amount will be
determined by an investment banking firm as the maximum amount which ACNielsen
is able to pay after giving effect to (i) any plan submitted by such investment
bank which is designed to maximize the claims paying ability of ACNielsen
without impairing the investment banking firm's ability to deliver a viability
opinion (but which will not require any action requiring shareholder approval),
and (ii) payment of related fees and expenses. For these purposes, financial
viability means the ability of ACNielsen, after giving effect to such plan, the
payment of related fees and expenses and the payment of the ACN Maximum Amount,
to pay its debts as they become due and to finance the current and anticipated
operating and capital requirements of its business, as reconstituted by such
plan, for two years from the date any such plan is expected to be implemented.
 
    Under the terms of the 1996 Distribution Agreement, as a condition to the
Distribution, IMS HEALTH and Nielsen Media Research are required to undertake to
be jointly and severally liable to D&B and ACNielsen for Cognizant's obligations
under the 1996 Distribution Agreement. However, pursuant to the Distribution
Agreement, IMS HEALTH and Nielsen Media Research have agreed that, as between
themselves, IMS HEALTH will assume 75%, and Nielsen Media Research will assume
25%, of any payments to be made in respect of the IRI Action under the Indemnity
and Joint Defense Agreement or otherwise, including any legal fees and expenses
related thereto incurred in 1999 or thereafter. IMS HEALTH has agreed to be
fully responsible for any legal fees and expenses incurred during 1998. Nielsen
Media Research's aggregate liability to IMS HEALTH for payments in respect of
the IRI Action and certain other contingent liabilities shall not exceed $125
million.
 
    Management of IMS HEALTH is unable to predict at this time the final outcome
of this matter or whether the resolution of this matter could materially affect
IMS HEALTH's results of operations, cash flows or financial position.
 
                                       53
<PAGE>
                IMS HEALTH MANAGEMENT AND EXECUTIVE COMPENSATION
 
    Robert E. Weissman is currently Chairman and Chief Executive Officer of
Cognizant and Chairman and Chief Executive Officer of IMS HEALTH. Mr. Weissman
will resign from such positions at Cognizant effective upon the Distribution
Date, but will remain a director of Cognizant after the Distribution. The Board
of Directors of IMS HEALTH will be composed of certain persons who are currently
directors of Cognizant. See "--IMS HEALTH Board of Directors". In addition to
Mr. Weissman, the other executive officers of IMS HEALTH will be drawn from the
current management of Cognizant or its subsidiaries, and they will resign from
their positions at Cognizant effective upon the Distribution. See "--IMS HEALTH
Executive Officers".
 
IMS HEALTH BOARD OF DIRECTORS
 
    Immediately after the Distribution, IMS HEALTH expects to have a Board of
Directors composed of nine directors.
 
    The following table sets forth the names, in alphabetical order, and
information as to the persons who are expected to serve as directors of IMS
HEALTH following the Distribution, including information as to service with
Cognizant, if applicable.
 
<TABLE>
<CAPTION>
                            POSITIONS       DIRECTOR
                              WITH        OF COGNIZANT      PRINCIPAL OCCUPATION                          OTHER
          NAME              COGNIZANT         SINCE        DURING LAST FIVE YEARS      AGE*           DIRECTORSHIPS
- ------------------------  -------------  ---------------  ------------------------     -----     ------------------------
<S>                       <C>            <C>              <C>                       <C>          <C>
 
Clifford L. Alexander,        Director           1996     President, Alexander &            64   The Dun & Bradstreet
  Jr.                                                     Associates, Inc.,                      Corporation; MCI
                                                          Washington, DC                         Communications
                                                          (consulting firm                       Corporation; Dreyfus
                                                          specializing in                        Third Century Fund;
                                                          workforce                              Dreyfus General Family
                                                          inclusiveness), 1/81 to                of Funds; Dreyfus
                                                          present.                               Premier Family of Funds;
                                                                                                 Mutual of America Life
                                                                                                 Insurance Company;
                                                                                                 American Home Products
                                                                                                 Corp.; TLC Beatrice
                                                                                                 International Holdings,
                                                                                                 Inc.
 
Victoria R. Fash             Executive             --     Executive Vice President          46   Orion Capital
                                  Vice                    and Chief Financial                    Corporation; Ligand
                             President                    Officer of Cognizant                   Pharmaceuticals
                                   and                    9/96 to present;                       Incorporated
                                 Chief                    Chairman and Chief
                             Financial                    Executive Officer of
                               Officer                    IMS, 12/97 to present;
                                                          Senior Vice President--
                                                          Business Strategy, The
                                                          Dun & Bradstreet
                                                          Corporation, Wilton, CT
                                                          (information services),
                                                          4/95 to 10/96; Vice
                                                          President-- Business
                                                          Operations Planning,
                                                          5/94 to 4/95; Assistant
                                                          to the President, 9/91
                                                          to 5/94.
</TABLE>
 
                                       54
<PAGE>
<TABLE>
<CAPTION>
                            POSITIONS       DIRECTOR
                              WITH        OF COGNIZANT      PRINCIPAL OCCUPATION                          OTHER
          NAME              COGNIZANT         SINCE        DURING LAST FIVE YEARS      AGE*           DIRECTORSHIPS
- ------------------------  -------------  ---------------  ------------------------     -----     ------------------------
<S>                       <C>            <C>              <C>                       <C>          <C>
John P. Imlay, Jr.            Director           1996     Chairman, Imlay                   61   Gartner Group, Inc.;
                                                          Investments, Inc.,                     Metromedia International
                                                          Atlanta, GA (private                   Group
                                                          venture capital
                                                          investments), 1990 to
                                                          present; Chairman, Dun &
                                                          Bradstreet Software
                                                          Services, Inc., Atlanta,
                                                          GA (software company),
                                                          3/90 to 11/96; Principal
                                                          Executive Officer, 3/90
                                                          to 1/93; President, 3/90
                                                          to 3/92.
 
Robert Kamerschen             Director           1996     Chairman and Chief                62   ADVO, Inc.; Micrografx,
                                                          Executive Officer, ADVO,               Inc.
                                                          Inc., Windsor, CT
                                                          (direct mail marketing
                                                          services), 11/88 to
                                                          present.
 
Robert J. Lanigan             Director           1996     Limited Partner,                  69   The Dun & Bradstreet
                                                          Palladium Equity                       Corporation; Owens-
                                                          Partners, New York, NY                 Illinois, Inc.;
                                                          (private investment                    Transocean Offshore,
                                                          firm), 6/97 to present,                Inc.; Sonat Inc.;
                                                          Chairman Emeritus,                     Chrysler Corporation
                                                          Owens-Illinois, Inc.,
                                                          Toledo, OH (glass,
                                                          plastics and other
                                                          packaging products),
                                                          1/92 to present;
                                                          Chairman of the Board
                                                          4/84 to 10/91; Chief
                                                          Executive Officer, 1/84
                                                          to 9/90.
 
H. Eugene Lockhart            Director           1996     President, Retail                 48   Niagara Mohawk Power
                                                          Banking Division,                      Corp.; RJR Nabisco
                                                          BankAmerica Corporation,               Holdings Corp.
                                                          San Francisco, CA
                                                          (financial services),
                                                          5/97 to present;
                                                          President and Chief
                                                          Executive Officer,
                                                          MasterCard International
                                                          Inc., Purchase, NY
                                                          (credit card company),
                                                          3/94 to 4/97; Executive
                                                          Vice President, First
                                                          Manhattan Consulting
                                                          Group, New York, NY
                                                          (banking consulting
                                                          firm), 9/92 to 2/94;
                                                          Chief Executive Officer,
                                                          UK Banking and Group
                                                          Operations, Midland Bank
                                                          plc, London, England,
                                                          1986 to 1993.
</TABLE>
 
                                       55
<PAGE>
<TABLE>
<CAPTION>
                            POSITIONS       DIRECTOR
                              WITH        OF COGNIZANT      PRINCIPAL OCCUPATION                          OTHER
          NAME              COGNIZANT         SINCE        DURING LAST FIVE YEARS      AGE*           DIRECTORSHIPS
- ------------------------  -------------  ---------------  ------------------------     -----     ------------------------
<S>                       <C>            <C>              <C>                       <C>          <C>
M. Bernard Puckett            Director           1996     Private Investor, 1/96            53   P-Com, Inc.; R.R.
                                                          to present; President                  Donnelley & Sons
                                                          and Chief Executive                    Company; Oacis
                                                          Officer, Mobile                        Healthcare Holdings
                                                          Telecommunication                      Corp.
                                                          Technologies Corp.;
                                                          Jackson, MS
                                                          (telecommunications),
                                                          5/95 to 1/96; President,
                                                          Chief Operating Officer,
                                                          1/94 to 5/95; Senior
                                                          Vice President-Corporate
                                                          Strategy and
                                                          Development,
                                                          International Business
                                                          Machines Corporation,
                                                          Armonk, NY (computers),
                                                          7/93 to 12/93; General
                                                          Manager of Applications
                                                          Solutions, 1/91 to 7/93.
 
William C. Van Faasen         Director         --         President and Chief               49   BankBoston Corporation
                                                          Executive Officer, Blue
                                                          Cross and Blue Shield of
                                                          Massachusetts, Boston,
                                                          MA (health insurance),
                                                          9/92 to present.
 
Robert E. Weissman         Chairman and          1996     Chairman and Chief                57   State Street Boston
                                 Chief                    Executive Officer,                     Corporation; Gartner
                             Executive                    Cognizant, 9/96 to                     Group, Inc.
                              Officer,                    present; Chairman and
                              Director                    Chief Executive Officer,
                                                          The Dun & Bradstreet
                                                          Corporation, Wilton, CT
                                                          (information services)
                                                          4/95 to 10/96; President
                                                          and Chief Executive
                                                          Officer 1/94 to 3/95;
                                                          President and Chief
                                                          Operating Officer 1/85
                                                          to 12/93.
</TABLE>
 
- ------------------------
 
    * As of March 13, 1998
 
DIRECTORS' COMPENSATION
 
    The Board of Directors of Cognizant has approved a director compensation
program for IMS HEALTH. It is anticipated that the Board of Directors of IMS
HEALTH will adopt and implement such program as described below prior to, on or
shortly after the Distribution Date.
 
    If such program is adopted and implemented, each non-employee director will
receive a 1998 retainer of $     ; thereafter, the retainer will be paid at an
annual rate of $     . Each non-employee director who is the Chairman of a
Committee of the Board of Directors will be paid an additional retainer of $
for 1998 and annually thereafter. A fee of $    will be paid to each
non-employee director for every Board or Committee meeting attended. Directors
who are employed by IMS HEALTH shall receive no retainers or meeting fees.
 
    Unexercised options to acquire Cognizant Common Stock held by non-employee
directors of IMS HEALTH as of the Distribution Date will be cancelled and
replaced with options that are exercisable into
 
                                       56
<PAGE>
shares of IMS HEALTH Common Stock. On the second anniversary of the date a
non-employee director commences service on the Board of Directors, and on each
anniversary thereafter, a non-employee director will receive option grants for
    shares of IMS HEALTH Common Stock. Such options will vest in accordance with
a schedule set by the Compensation and Benefits Committee of the IMS HEALTH
Board of Directors at the time of grant. The exercise price per share of all
options granted will be not less than 100% of the Fair Market Value (as
hereinafter defined) of a share on the date of grant. For purposes of these and
the following provisions, Fair Market Value of a share on a given date means the
average of the high and low trading prices of such share on such date.
 
    Each non-employee director may elect to have all or a specified part of the
retainer and fees deferred until he or she ceases to be a director. Deferred
amounts may be credited to the account of the directors as deferred cash, which
bears interest at prescribed rates, or as deferred share units in an amount
equal to the amount of deferred compensation divided by the Fair Market Value of
a share of IMS HEALTH Common Stock on the date the compensation would otherwise
have been paid. Deferred share units are credited with dividend equivalents.
Deferred amounts and accrued interest and dividend equivalents are paid in the
form of cash or stock, as appropriate, on the first business day of the calendar
year following the date of the director's termination of service on the IMS
HEALTH Board of Directors.
 
COMMITTEES OF THE IMS HEALTH BOARD OF DIRECTORS
 
    Prior to the Distribution, the IMS HEALTH Board of Directors will establish
Audit, Executive, Compensation and Benefits, and Nominating Committees and
designate specific functions and areas of oversight as to such committees. No
final determination has yet been made as to the memberships of such standing
committees.
 
IMS HEALTH EXECUTIVE OFFICERS
 
    Listed below is certain information as to the executive officers who have
been selected to serve after the Distribution.
 
<TABLE>
<CAPTION>
NAME, POSITION WITH IMS HEALTH AND AGE*                                      BIOGRAPHICAL DATA
- --------------------------------------------------------  --------------------------------------------------------
<S>                                                       <C>
 
Robert E. Weissman, 57..................................  See information under "IMS HEALTH Board of Directors".
  Chairman and Chief Executive Officer
 
Victoria R. Fash, 46....................................  See information under "IMS HEALTH Board of Directors".
  President and Chief Operating Officer
 
Alan J. Klutch, 53......................................  Senior Vice President--Finance of Cognizant 9/96 to
  Senior Vice President--Finance                          present; Vice President--Financial Planning, D&B, 10/84
                                                          to 10/96.
 
Kenneth S. Siegel, 42...................................  Senior Vice President and General Counsel of Cognizant
  Senior Vice President, General Counsel and Secretary    1/97 to present; Secretary of Cognizant 7/97 to present;
                                                          Partner, Baker & Botts, L.L.P., 9/94 to 1/97; Partner,
                                                          O'Sullivan Graev & Karabell, 7/87 to 9/94.
 
James C. Malone, 49.....................................  Senior Vice President--Finance and Controller of
  Senior Vice President--Finance and Controller           Cognizant, 12/96 to present; Vice President-- Finance of
                                                          Cognizant, 9/96 to 12/96; Assistant Vice President, D&B,
                                                          2/95 to 10/96; Vice President and Controller, The Reuben
                                                          H. Donnelley Corporation (a subsidiary of D&B), 1990 to
                                                          2/95.
</TABLE>
 
                                       57
<PAGE>
<TABLE>
<CAPTION>
NAME, POSITION WITH IMS HEALTH AND AGE*                                      BIOGRAPHICAL DATA
- --------------------------------------------------------  --------------------------------------------------------
<S>                                                       <C>
Leslye G. Katz, 43......................................  Vice President and Treasurer of Cognizant, 9/96 to
  Vice President and Treasurer                            present; Senior Vice President and Chief Financial
                                                          Officer, The Reuben H. Donnelley Corporation, 9/92 to
                                                          9/96.
 
Craig S. Kussman, 39....................................  Vice President--Corporate Development of Cognizant,
  Vice President--Corporate Development                   10/97 to present; Vice President-- Mergers and
                                                          Acquisitions of Cognizant, 9/96 to 10/97; Assistant Vice
                                                          President, D&B, 5/91 to 9/96.
</TABLE>
 
- ------------------------
 
* As of March 13, 1998
 
                                       58
<PAGE>
COMPENSATION OF IMS HEALTH EXECUTIVE OFFICERS
 
    The following table discloses the compensation paid by Cognizant for
services rendered to Cognizant in 1997 to IMS HEALTH's Chief Executive Officer
and to each of the persons who are anticipated to be one of the three other most
highly compensated executive officers of IMS HEALTH following the Distribution.
During the period presented, the individuals were compensated in accordance with
Cognizant's plans and policies.
 
                           SUMMARY COMPENSATION TABLE
                          FOR SERVICES WITH COGNIZANT
<TABLE>
<CAPTION>
                                                                                        LONG-TERM COMPENSATION
                                                                              -------------------------------------------
                                                                                       AWARDS                PAYOUTS
                                                                              ------------------------  -----------------
                                              ANNUAL COMPENSATION                              (G)
                                   -----------------------------------------      (F)      SECURITIES          (H)
         (A)                                                                  RESTRICTED   UNDERLYING       LONG-TERM
  NAME AND PRINCIPAL                  (C)        (D)             (E)             STOCK      OPTIONS/        INCENTIVE
    POSITION WITH          (B)      SALARY    BONUS(1)      OTHER ANNUAL      AWARD(S)(3)    SARS(4)         PAYOUTS
      IMS HEALTH          YEAR        ($)        ($)     COMPENSATION(2)($)       ($)          (#)             ($)
- ----------------------  ---------  ---------  ---------  -------------------  -----------  -----------  -----------------
<S>                     <C>        <C>        <C>        <C>                  <C>          <C>          <C>
Robert E. Weissman....       1997    750,000  1,007,100           1,006                0            0               0
  Chairman and Chief
  Executive Officer
Victoria R. Fash......       1997    375,000    349,128               0          268,938            0               0
  President and Chief
  Operating Officer
Alan J. Klutch........       1997    325,000    303,473               0                0            0               0
  Senior Vice
  President-
  Finance
Kenneth S.                   1997    325,000    235,025         127,388                0      190,000               0
  Siegel(6)...........
  Senior Vice
  President, General
  Counsel and
  Secretary
 
<CAPTION>
         (A)                   (I)
  NAME AND PRINCIPAL        ALL OTHER
    POSITION WITH        COMPENSATION(5)
      IMS HEALTH               ($)
- ----------------------  -----------------
<S>                     <C>
Robert E. Weissman....         72,568
  Chairman and Chief
  Executive Officer
Victoria R. Fash......         19,655
  President and Chief
  Operating Officer
Alan J. Klutch........         22,637
  Senior Vice
  President-
  Finance
Kenneth S.                      4,800
  Siegel(6)...........
  Senior Vice
  President, General
  Counsel and
  Secretary
</TABLE>
 
- ------------------------
 
(1) The 1997 bonus awards were earned in 1997 and paid in 1998.
 
(2) The amount shown for Mr. Weissman represents reimbursement for taxes paid by
    him with respect to company-directed travel and certain other expenses. The
    amount shown for Mr. Siegel includes reimbursement of relocation expenses in
    connection with his joining Cognizant and related tax obligations. The value
    of certain personal benefits is not included since it does not exceed
    $50,000 for any named executive officer.
 
(3) The amount shown for Ms. Fash represents the dollar value of restricted
    stock on the date of the grant. This grant was a special one-time award and
    will vest one year following the date of the award. Dividends are paid at
    the rate established from time to time for Cognizant Common Stock.
 
(4) All the options in this table are without tandem stock appreciation rights,
    except for the Limited SARs described under the "Option/SAR Grants in Last
    Fiscal Year" table below. In addition, Ms. Fash received a grant of options
    for 6,500 shares (after adjustment for a reverse stock split) (without
    tandem stock appreciation rights) of Cognizant's subsidiary Cognizant
    Technology Solutions Corporation, as described under the table "Option
    Grants/SAR Grants in Last Fiscal Year to Purchase Cognizant Common Stock".
 
(5) The amounts shown represent aggregate annual company contributions for the
    account of each named executive officer under the Cognizant Corporation
    Savings Plan ("Savings Plan") and Savings Benefit Equalization Plan
    ("SBEP"), plans which are open to employees of Cognizant and certain
    subsidiaries. The Savings Plan is a tax-qualified defined contribution plan
    and the SBEP is a non-qualified plan which provides a benefit to
    participants in the Savings Plan equal to the amount of company
    contributions that would have been made to the participant's Savings Plan
    accounts but for certain Federal tax laws.
 
(6) Mr. Siegel joined Cognizant on January 31, 1997. The salary and bonus
    amounts provided above have been annualized for the full year 1997.
 
                                       59
<PAGE>
OPTION GRANTS ON COGNIZANT COMMON STOCK TO IMS HEALTH EXECUTIVES IN LAST FISCAL
  YEAR
 
    The following table provides information on fiscal year 1997 grants of
options to the named IMS HEALTH executives to purchase shares of Cognizant
Common Stock. Options to acquire Cognizant Common Stock will be replaced by
options to acquire IMS HEALTH Common Stock. See "Relationship Between IMS HEALTH
and Nielsen Media Research After the Distribution--Employee Benefits Agreement".
 
OPTION GRANTS/SAR GRANTS IN LAST FISCAL YEAR TO PURCHASE COGNIZANT COMMON STOCK
 
<TABLE>
<CAPTION>
                                                        (B)
                                                     NUMBER OF          (C)
                                                    SECURITIES      % OF TOTAL                                     (F)
                                                    UNDERLYING     OPTIONS/SARS        (D)                     GRANT DATE
                                                   OPTIONS/SARS     GRANTED TO     EXERCISE OR      (E)          PRESENT
                       (A)                          GRANTED(1)     EMPLOYEES IN    BASE PRICE   EXPIRATION      VALUE(2)
NAME                                                    (#)         FISCAL YEAR     ($/SHARE)      DATE            ($)
- -------------------------------------------------  -------------  ---------------  -----------  -----------  ---------------
<S>                                                <C>            <C>              <C>          <C>          <C>
Robert E. Weissman...............................            0              NA             NA           NA              NA
Victoria R. Fash(3)..............................            0              NA             NA           NA              NA
Alan J. Klutch...................................            0              NA             NA           NA              NA
Kenneth S. Siegel(4).............................      190,000             4.8%     $ 33.0625     01/30/07     $ 1,678,032
</TABLE>
 
- ------------------------
 
(1) The amount shown represents a non-qualified stock option, without tandem
    stock appreciation rights ("SARs"), granted in 1997. The option may not be
    exercised for at least one year after grant and may then be exercised in
    installments of one-sixth of the grant amount each year until they are 100%
    vested. Payment must be made in full upon exercise in cash or Cognizant
    Common Stock. The option holder may elect to have shares of Cognizant Common
    Stock issuable upon exercise withheld by Cognizant to pay withholding taxes
    due. The option shown includes Limited SARs in tandem with the option.
    Limited SARs are exercisable only if and to the extent that the related
    option is exercisable and are exercisable only during the 30-day period
    following the acquisition of at least 20% of the outstanding Cognizant
    Common Stock pursuant to a tender or exchange offer not made by Cognizant.
    Each Limited SAR permits the holder to receive cash equal to the excess over
    the related option exercise price or the highest price paid pursuant to a
    tender or exchange offer for Cognizant Common Stock which is in effect at
    any time during the 60 days preceding the date upon which the Limited SAR is
    exercised. Limited SARs can be exercised regardless of whether Cognizant
    supports or opposes the offer.
 
(2) Grant date present value is based on the Black-Scholes option valuation
    model, which makes the following material assumptions for the January 31,
    1997 grant: an expected stock-price volatility factor of 25%, a risk-free
    rate of return of 6.23%, an annual dividend yield of 0.30%, an assumed time
    of exercise of 4.5 years from grant date, and a reduction of approximately
    15.4% to reflect the probability of forfeiture due to termination prior to
    vesting. These assumptions may or may not be fulfilled. The amount shown
    cannot be considered predictions of future value. In addition, the option
    will gain value only to the extent the stock price exceeds the option
    exercise price during the life of the option.
 
(3) In 1997, Ms. Fash was granted options for 6,500 shares (after adjustment for
    a reverse stock split) of Class A Common Stock of Cognizant's subsidiary,
    CTS, in her capacity as a director of CTS. This grant represents 1.2% of the
    total CTS options granted in 1997. The options' exercise price approximates
    fair market value on the date of grant and they expire on December 31, 2007.
    The options become exercisable in 8.75 years, except that accelerated
    vesting occurs on the first and second anniversary of an initial public
    offering or controlling interest sale of CTS. The potential realizable value
    of this grant assuming annual rates of appreciation of the Class A Common
    Stock, from the grant date until the expiration date, of 5% and 10% is
    calculated at $51,105 and $108,031, respectively.
 
(4) Mr. Siegel joined Cognizant on January 31, 1997.
 
AGGREGATE COGNIZANT OPTION EXERCISES IN THE LAST FISCAL YEAR AND FISCAL YEAR-END
  COGNIZANT OPTION VALUES
 
    The following table provides information on option exercises in 1997 by the
named executives of IMS HEALTH and the value of each such executive's
unexercised in-the-money options to acquire Cognizant Common Stock at December
31, 1997. See also "Relationship Between IMS HEALTH and Nielsen Media Research
After the Distribution--Employee Benefits Agreement".
 
                                       60
<PAGE>
     AGGREGATE OPTION/SAR EXERCISES IN LAST FISCAL YEAR AND FISCAL YEAR-END
                               OPTION/SAR VALUES
<TABLE>
<CAPTION>
                                                                                                                      (E)
                                                                                                                   VALUE OF
                                                                                                                  UNEXERCISED,
                                                                                                 (D)              IN-THE-MONEY
                                                                                         NUMBER OF SECURITIES      COGNIZANT
                                                                                        UNDERLYING UNEXERCISED    OPTIONS/SARS
                                                                                      COGNIZANT OPTIONS/SARS AT       AT
                                                             (B)             (C)                                    FISCAL
                                                       SHARES ACQUIRED      VALUE       FISCAL YEAR-END(2)(#)     YEAR-END(3)($)
           (A)                                         ON EXERCISE(1)     REALIZED    --------------------------  -----------
          NAME                                               (#)             ($)      EXERCISABLE  UNEXERCISABLE  EXERCISABLE
- -------------------------                             -----------------  -----------  -----------  -------------  -----------
<S>                        <C>                        <C>                <C>          <C>          <C>            <C>
Robert E. Weissman.......  Effective Date Options                 0               0      162,499       812,501     $1,767,177
                           SUBSTITUTE OPTIONS                 3,256       $   6,756      473,122        49,985     $7,160,966
                                                             15,813       $  32,809
                                                             26,545       $ 430,483
 
Victoria R. Fash(4)......  Effective Date Options                 0       $       0       66,666       333,334     $ 724,993
                           SUBSTITUTE OPTIONS                     0       $       0       24,678         9,939     $ 300,235
 
Alan J. Klutch...........  Effective Date Options                 0       $       0       37,499       187,501     $ 407,802
                           SUBSTITUTE OPTIONS                 3,256       $   6,756       97,120         9,456     $1,491,515
                                                              2,119       $   4,397
                                                              7,803       $ 126,542
                                                              2,697       $  39,256
Kenneth S. Siegel(5).....  Stock Options                          0       $       0            0       190,000     $       0
 
<CAPTION>
 
           (A)
          NAME             UNEXERCISABLE
- -------------------------  -------------
<S>                        <C>
Robert E. Weissman.......   $ 8,835,948
                            $   546,848
 
Victoria R. Fash(4)......   $ 3,625,007
                            $   109,811
Alan J. Klutch...........   $ 2,039,073
                            $   103,451
 
Kenneth S. Siegel(5).....   $ 2,125,625
</TABLE>
 
- ------------------------
 
(1) Effective Date Options reflect Cognizant option grants for 1996. Substitute
    Options were issued in substitution of D&B options that were canceled as of
    the date of the D&B spin-off.
 
(2) No SARs were outstanding at December 31, 1997.
 
(3) The values shown equal the difference between the exercise price of
    unexercised in-the-money options and the fair market value of the underlying
    Cognizant Common Stock at December 31, 1997. Options are in-the-money if the
    fair market value of the Cognizant Common Stock exceeds the exercise price
    of the option.
 
(4) The value at year-end of in-the-money options held by Ms. Fash for shares of
    Class A Common Stock of CTS, a subsidiary of Cognizant, none of which are
    presently exercisable, was zero.
 
(5) Mr. Siegel joined Cognizant on January 31, 1997.
 
COGNIZANT RETIREMENT BENEFITS
 
    The following table sets forth the estimated aggregate annual benefits
payable under the Cognizant Retirement Plan, the Cognizant Corporation
Supplemental Executive Retirement Plan and the Cognizant Retirement Excess Plan
to persons in the specified average final compensation and credited service
classifications upon retirement at age 65. Amounts shown in the table include
U.S. Social Security benefits and benefits payable under predecessor plans of
D&B which would be deducted in calculating benefits payable under these plans.
These aggregate annual retirement benefits do not increase as a result of
additional credited service after 15 years.
 
    Benefits vest after five years of credited service and are calculated at 5%
of average final compensation per year for the first 10 years of credited
service, and 2% per year for the next five years, up to a maximum of 60% of
average final compensation after 15 years of credited service.
 
<TABLE>
<CAPTION>
               ESTIMATED AGGREGATE ANNUAL RETIREMENT BENEFITS
               ----------------------------------------------
<S>            <C>         <C>         <C>         <C>
   AVERAGE             ASSUMING CREDITED SERVICE OF:
    FINAL      ----------------------------------------------
COMPENSATION    15 YEARS    20 YEARS    25 YEARS    30 YEARS
- -------------  ----------  ----------  ----------  ----------
 $   550,000   $  330,000  $  330,000  $  330,000  $  330,000
     700,000      420,000     420,000     420,000     420,000
     850,000      510,000     510,000     510,000     510,000
   1,000,000      600,000     600,000     600,000     600,000
   1,300,000      780,000     780,000     780,000     780,000
   1,600,000      960,000     960,000     960,000     960,000
   1,900,000    1,140,000   1,140,000   1,140,000   1,140,000
</TABLE>
 
                                       61
<PAGE>
    The number of years of credited service for Mr. Weissman and Ms. Fash are 18
and 6, respectively.
 
    Compensation, for the purpose of determining retirement benefits, consists
of base salary, annual bonuses, commissions and overtime pay. Severance pay,
income derived from equity-based awards, contingent payments and other forms of
special remuneration are excluded. The bonuses included in the Summary
Compensation Table above were not paid until the year following the year in
which they were accrued and expensed; therefore, compensation for purposes of
determining retirement benefits varies from the Summary Compensation Table
amounts in that bonuses expensed in the previous year but paid in the current
year are part of retirement compensation in the current year and any unpaid
current year's bonuses accrued and included in the Summary Compensation Table
are not part of retirement compensation in that year. For 1997, compensation for
purposes of determining retirement benefits for Mr. Weissman and Ms. Fash was
$875,000 and $418,333, respectively.
 
    Average final compensation is defined as the highest average annual
compensation during five consecutive twelve-month periods in the last ten
consecutive twelve-month periods of the participant's credited service.
Participants vest in their accrued retirement benefit upon completion of five
years' service. The benefits shown in the table above are calculated on a
straight-life annuity basis.
 
    Retirement benefits for Messrs. Klutch and Siegel are determined solely
under the Cognizant Retirement Plan and the Retirement Excess Plan. Under these
plans, Cognizant contributes 6% of the participant's compensation monthly to the
participant's cash balance in the plan. The cash balance earns monthly
investment credits based on the yield on 30-year Treasury bonds from time to
time. These plans also include a minimum monthly benefit for certain employees
who had attained age 50 and had earned 10 years of service as of October 31,
1996, including Mr. Klutch. The minimum benefit is equal to the excess of (i)
1.7% of final average compensation multiplied by years of credited service not
in excess of 25, plus 1.0% of average final compensation multiplied by years of
credited service in excess of 25, over (ii) 1.7% of the primary Social Security
insurance benefits multiplied by years of credited service not in excess of 25,
plus 0.5% of the primary Social Security insurance benefits multiplied by years
of credited service in excess of 25. Mr. Klutch's estimated annual benefits upon
retirement at age 65 are $202,828, based upon his credited service to date for
these plans of 23.5 years. This amount includes benefits payable under
predecessor plans of D&B which would be deducted from the amount payable under
these plans. In 1997, Mr. Siegel was not eligible to participate in the
Cognizant Retirement Plan and the Cognizant Retirement Excess Plan.
 
LIMITED SARS
 
    Cognizant Limited SARs held by IMS HEALTH executive officers will be
converted into Limited SARs of IMS HEALTH which will have the terms described
for Cognizant Limited SARs in footnote 1 under the caption "--Option Grants on
Cognizant Common Stock to IMS HEALTH Executives in Last Fiscal Year" above. See
"Relationship Between IMS HEALTH and Nielsen Media Research After the
Distribution--Employee Benefits Agreement".
 
                        IMS HEALTH SECURITY OWNERSHIP BY
                    CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
    All the outstanding shares of IMS HEALTH Common Stock are currently held by
Cognizant. The following table sets forth the number of shares of IMS HEALTH
Common Stock that are expected to be beneficially owned after the Distribution
by each of the IMS HEALTH directors, by each of the executive officers named in
the IMS HEALTH Summary Compensation Table above, by all such directors and
executive officers as a group and by each person known by IMS HEALTH to
beneficially own more than 5% of the outstanding shares of Cognizant Common
Stock at December 31, 1997 ("5% Owners"). Stock ownership information is based
on (i) the number of shares of Cognizant Common Stock held by directors and
executive officers as of December 31, 1997, (ii) the number of shares held by 5%
Owners, based upon
 
                                       62
<PAGE>
a Schedule 13G filed with the SEC by such 5% Owners and (iii) one share of IMS
HEALTH Common Stock being distributed for every share of Cognizant Common Stock.
See "The Distribution" and "IMS HEALTH Management and Executive
Compensation--Compensation of IMS HEALTH Executive Officers". Information
regarding shares subject to options reflects shares of Cognizant Common Stock
subject to options as of December 31, 1997 and exercisable within 60 days
thereafter and represents the number of shares of IMS HEALTH Common Stock which
would be obtained in the Distribution if the Cognizant stock options were
exercised prior to the Record Date. Unexercised Cognizant stock options held by
IMS HEALTH employees as of the Distribution Date will be converted into options
that are exercisable into shares of IMS HEALTH Common Stock based upon a
conversion formula to be calculated after the Distribution Date. See
"Relationship Between IMS HEALTH and Nielsen Media Research After the
Distribution--Employee Benefits Agreement". All directors and executive officers
as a group beneficially owned less than one percent of the outstanding shares of
Cognizant Common Stock outstanding on December 31, 1997 and are expected to own
less than one percent of the shares of IMS HEALTH Common Stock outstanding as of
the Distribution Date. The mailing address for each of the IMS HEALTH directors
and executive officers listed herein is 200 Nyala Farms, Westport, Connecticut
06880.
 
<TABLE>
<CAPTION>
                                                                                               NUMBER OF SHARES
                                                                                              SUBJECT TO OPTIONS
                                                                        NUMBER OF SHARES     EXERCISABLE WITHIN 60
NAME AND ADDRESS OF BENEFICIAL OWNER                                   BENEFICIALLY OWNED            DAYS
- -------------------------------------------------------------------  ----------------------  ---------------------
<S>                                                                  <C>                     <C>
 
Clifford L. Alexander, Jr..........................................               4,198(1)             1,166
 
Victoria R. Fash(2)................................................               8,804(3)            91,344
 
John P. Imlay, Jr..................................................              10,898(1)             1,166
 
Robert Kamerschen..................................................               4,898(1)             1,166
 
Alan J. Klutch.....................................................              12,206              134,619
 
Robert J. Lanigan..................................................               7,998(1)(4)           1,166
 
H. Eugene Lockhart.................................................               1,198(1)             1,166
 
M. Bernard Puckett.................................................               4,498(1)             1,166
 
Kenneth S. Siegel..................................................                  --               31,666
 
William C. Van Faasen..............................................                 200(5)                --
 
Robert E. Weissman.................................................             122,964              635,621
 
All Directors and Executive Officers as a Group(6).................             177,862              900,246
 
FMR Corporation....................................................          18,355,768(7)(8)              --
82 Devonshire Street
Boston, MA 02109
</TABLE>
 
- ------------------------
 
(1) Includes 898 shares of restricted stock granted under the Non-Employee
    Directors' Stock Incentive Plan, which shares are scheduled to vest on
    November 15, 2001.
 
(2) Ms. Fash also owns 3,250 shares (after adjustment for a reverse stock split)
    of restricted Class A Common Stock of CTS, purchased pursuant to the CTS
    Restricted Stock Purchase Plan. These restricted shares vest upon the
    occurrence of an initial public offering of CTS, and represent less than 1%
    of the outstanding shares of CTS.
 
(3) Includes 6,500 shares of restricted stock granted under the Key Employees'
    Stock Incentive Plan, which shares are scheduled to vest on October 21,
    1998.
 
                                       63
<PAGE>
(4) These shares are held in two revocable trusts (one trust holding 5,900
    shares and the other 1,200 shares) for the benefit of Mr. Lanigan in which
    he is the settlor and sole beneficial owner and over which he has sole
    investment control.
 
(5) In addition, on April 21, 1998, Mr. Van Faasen was granted        shares of
    restricted stock under the Non-Employee Directors' Stock Incentive Plan,
    which shares are scheduled to vest on April 21, 2003.
 
(6) Includes all shares beneficially owned regardless of the nature of
    ownership.
 
(7) Represents 11.32% of the total outstanding Cognizant Common Stock on
    December 31, 1997.
 
(8) FMR Corporation ("FMR Corp.") and its wholly owned subsidiaries, Fidelity
    Management & Research Company ("Fidelity") and Fidelity Management Trust
    Company ("FMTC"), jointly filed a Schedule 13G with the SEC on February 14,
    1998. This Schedule 13G shows that Fidelity, a registered investment
    adviser, beneficially owned at December 31, 1997, 17,116,190 shares of
    Cognizant Common Stock. Edward C. Johnson, 3rd, Chairman of FMR Corp., FMR
    Corp. and the registered investment companies advised by Fidelity each has
    sole dispositive power (but no voting power) over such shares. Voting power
    with respect to such shares resides with the respective Boards of Trustees
    of each of the Fidelity Funds. Mr. Johnson and FMR Corp. each has sole
    dispositive power over 1,239,578 shares of Cognizant Common Stock held by
    FMTC, a bank as defined under the Securities Act which serves as investment
    manager for institutional accounts, sole voting power over 749,378 of such
    shares and no voting power over 490,200 of such shares.
 
                                       64
<PAGE>
                    DESCRIPTION OF IMS HEALTH CAPITAL STOCK
 
AUTHORIZED CAPITAL STOCK
 
    The total number of shares of all classes of stock that IMS HEALTH has
authority to issue under its Restated Certificate of Incorporation is
420,000,000 shares of which 400,000,000 shares represent shares of IMS HEALTH
Common Stock, 10,000,000 shares represent shares of Preferred Stock (the "IMS
HEALTH Preferred Stock") and 10,000,000 shares represent shares of Series Common
Stock (the "IMS HEALTH Series Common Stock"). Based on          shares of
Cognizant Common Stock outstanding as of            , 1998, and a distribution
ratio of one share of IMS HEALTH Common Stock for every one share of Cognizant
Common Stock,          shares of IMS HEALTH Common Stock would be distributed to
holders of Cognizant Common Stock on the Distribution Date.
 
IMS HEALTH COMMON STOCK
 
    Subject to any preferential rights of any IMS HEALTH Preferred Stock or IMS
HEALTH Series Common Stock created by the Board of Directors of IMS HEALTH, each
outstanding share of IMS HEALTH Common Stock will be entitled to such dividends,
if any, as may be declared from time to time by the Board of Directors of IMS
HEALTH. See "Dividend Policies--IMS HEALTH". Each outstanding share is entitled
to one vote on all matters submitted to a vote of stockholders. In the event of
liquidation, dissolution or winding up of IMS HEALTH, holders of IMS HEALTH
Common Stock are entitled to receive on a pro rata basis any assets remaining
after provision for payment of creditors and after payment of any liquidation
preferences to holders of IMS HEALTH Preferred Stock and IMS HEALTH Series
Common Stock.
 
IMS HEALTH PREFERRED STOCK AND IMS HEALTH SERIES COMMON STOCK
 
    Each of the authorized IMS HEALTH Preferred Stock and the authorized IMS
HEALTH Series Common Stock is available for issuance from time to time in one or
more series at the discretion of the IMS HEALTH Board of Directors without
stockholder approval. The IMS HEALTH Board of Directors has the authority to
prescribe for each series of IMS HEALTH Preferred Stock or IMS HEALTH Series
Common Stock it establishes the number of shares in that series, the voting
rights (if any) to which such shares in that series are entitled, the
consideration for such shares in that series and the designation, powers,
preference and relative, participating, optional or other special rights, and
such qualifications, limitations or restrictions of the shares in that series.
Depending upon the rights of such IMS HEALTH Preferred Stock or IMS HEALTH
Series Common Stock, as applicable, the issuance of IMS HEALTH Preferred Stock
or IMS HEALTH Series Common Stock, as applicable, could have an adverse effect
on holders of IMS HEALTH Common Stock by delaying or preventing a change in
control of IMS HEALTH, making removal of the present management of IMS HEALTH
more difficult or resulting in restrictions upon the payment of dividends and
other distributions to the holders of IMS HEALTH Common Stock.
 
AUTHORIZED BUT UNISSUED CAPITAL STOCK
 
    Delaware law does not require stockholder approval for any issuance of
authorized shares. However, the listing requirements of the NYSE, which would
apply so long as the IMS HEALTH Common Stock remained listed on the NYSE,
require stockholder approval of certain issuances equal to or exceeding 20% of
the then outstanding voting power or then outstanding number of shares of IMS
HEALTH Common Stock. These additional shares may be used for a variety of
corporate purposes, including future public offerings to raise additional
capital or to facilitate corporate acquisitions. Under terms of the agreements
relating to the Acquisitions and subject to Walsh and PMSI shareholder approval,
Walsh shareholders will receive .3041 shares of Cognizant Common Stock per Walsh
share outstanding and PMSI shareholders will receive .2800 shares of Cognizant
Common Stock per PMSI share outstanding. The number of shares of Cognizant
Common Stock to be issued in connection with each of the Acquisitions is subject
to a collar
 
                                       65
<PAGE>
adjustment based on the price of Cognizant Common Stock during a period prior to
the closing of each Acquisition. Cognizant expects to issue approximately 6.7
million shares from treasury stock to consummate the Acquisitions. In the event
the Acquisitions are not completed prior to the Record Date, Walsh and PMSI
shareholders will receive, in lieu of Cognizant Common Stock, IMS HEALTH Common
Stock pursuant to a formula designed to recalibrate the collar computations
based on the relative value of IMS HEALTH to the total value of IMS HEALTH and
Nielsen Media Research following the Distribution. In addition, IMS HEALTH will
be required to issue IMS HEALTH Common Stock with a value between $550,000 and
$4,400,000 within the next five years as part of the consideration for a
previous acquisition. IMS HEALTH currently does not have any other plans to
issue additional shares of IMS HEALTH Common Stock, IMS HEALTH Preferred Stock
or IMS HEALTH Series Common Stock other than in connection with employee
compensation plans. See, however, "Risk Factors--Risks Relating to IMS
HEALTH--Acquisitions".
 
    One of the effects of the existence of unissued and unreserved IMS HEALTH
Common Stock, IMS HEALTH Preferred Stock and IMS HEALTH Series Common Stock may
be to enable the Board of Directors of IMS HEALTH to issue shares to persons
friendly to current management, which issuance could render more difficult or
discourage an attempt to obtain control of IMS HEALTH by means of a merger,
tender offer, proxy contest or otherwise, and thereby protect the continuity of
IMS HEALTH's management and possibly deprive the stockholders of opportunities
to sell their shares of IMS HEALTH Common Stock at prices higher than prevailing
market prices. Such additional shares also could be used to dilute the stock
ownership of persons seeking to obtain control of IMS HEALTH pursuant to the
operation of the IMS HEALTH Rights Plan, which is discussed below.
 
IMS HEALTH RIGHTS PLAN
 
    On            , 1998 the Board of Directors of IMS HEALTH declared a
dividend of one preferred share purchase right (an "IMS HEALTH Right") for each
outstanding share of IMS HEALTH Common Stock. The dividend will be payable on
           , 1998 (the "IMS HEALTH Record Date") to Cognizant, which will be the
sole stockholder of record on the IMS HEALTH Record Date. Each IMS HEALTH Right
entitles the registered holder to purchase from IMS HEALTH one one-thousandth of
a share of Series A Junior Participating IMS HEALTH Preferred Stock, par value
$.01 per share (the "IMS HEALTH Participating Preferred Stock"), of IMS HEALTH
at a price of $         per one one-thousandth of a share of IMS HEALTH
Participating Preferred Stock (as the same may be adjusted, hereinafter referred
to as the "IMS HEALTH Participating Preferred Stock Purchase Price"), subject to
adjustment. The description and terms of the IMS HEALTH Rights are set forth in
an IMS HEALTH Rights Agreement dated as of            , 1998, as the same may be
amended from time to time (the "IMS HEALTH Rights Agreement"), between IMS
HEALTH and First Chicago Trust Company of New York, as the IMS HEALTH Rights
Agent (the "IMS HEALTH Rights Agent").
 
    Until the earlier to occur of (i) 10 days following a public announcement
that a person or group of affiliated or associated persons (with certain
exceptions, hereinafter referred to in this description of IMS HEALTH Rights, an
"IMS HEALTH Acquiring Person") have acquired beneficial ownership of 15% or more
of the outstanding shares of IMS HEALTH Common Stock or (ii) 10 business days
(or such later date as may be determined by action of the Board of Directors
prior to such time as any person or group of affiliated persons becomes an IMS
HEALTH Acquiring Person) following the commencement of, or announcement of an
intention to make, a tender offer or exchange offer the consummation of which
would result in the beneficial ownership by a person or group of 15% or more of
the outstanding shares of IMS HEALTH Common Stock (the earlier of such dates
hereinafter referred to in this description of IMS HEALTH Rights as the "IMS
HEALTH Rights Distribution Date"), the IMS HEALTH Rights will be evidenced by
the certificates representing IMS HEALTH Common Stock.
 
    The IMS HEALTH Rights Agreement provides that, until the IMS HEALTH Rights
Distribution Date (or earlier redemption or expiration of the IMS HEALTH
Rights), the IMS HEALTH Rights will be
 
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<PAGE>
transferred with and only with the IMS HEALTH Common Stock. Until the IMS HEALTH
Rights Distribution Date (or earlier redemption or expiration of the IMS HEALTH
Rights), IMS HEALTH Common Stock certificates will contain a notation
incorporating the IMS HEALTH Rights Agreement by reference. Until the IMS HEALTH
Rights Distribution Date (or earlier redemption or expiration of the IMS HEALTH
Rights), the surrender for transfer of any certificates for shares of IMS HEALTH
Common Stock will also constitute the transfer of the IMS HEALTH Rights
associated with the shares of IMS HEALTH Common Stock represented by such
certificate. As soon as practicable following the IMS HEALTH Rights Distribution
Date, separate certificates evidencing the IMS HEALTH Rights ("IMS HEALTH Rights
Certificates") will be mailed to holders of record of the IMS HEALTH Common
Stock as of the close of business on the IMS HEALTH Rights Distribution Date and
such separate IMS HEALTH Rights Certificates alone will evidence the IMS HEALTH
Rights.
 
    The IMS HEALTH Rights are not exercisable until the IMS HEALTH Rights
Distribution Date. The IMS HEALTH Rights will expire on            , 2008
(hereinafter referred to in this description of IMS HEALTH Rights as the "IMS
HEALTH Final Expiration Date"), unless the IMS HEALTH Final Expiration Date is
advanced or extended or unless the IMS HEALTH Rights are earlier redeemed or
exchanged by IMS HEALTH, in each case as described below.
 
    The IMS HEALTH Participating Preferred Stock Purchase Price payable, and the
number of shares of IMS HEALTH Participating Preferred Stock or other securities
or property issuable, upon exercise of the IMS HEALTH Rights are subject to
adjustment from time to time to prevent dilution (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the IMS
HEALTH Participating Preferred Stock, (ii) upon the grant to holders of the IMS
HEALTH Participating Preferred Stock of certain rights or warrants to subscribe
for or purchase IMS HEALTH Participating Preferred Stock at a price, or
securities convertible into IMS HEALTH Participating Preferred Stock with a
conversion price, less than the then-current market price of the IMS HEALTH
Participating Preferred Stock or (iii) upon the distribution to holders of the
IMS HEALTH Participating Preferred Stock of evidences of indebtedness or assets
(excluding regular periodic cash dividends or dividends payable in IMS HEALTH
Participating Preferred Stock) or of subscription rights or warrants (other than
those referred to above).
 
    The IMS HEALTH Rights are also subject to adjustment in the event of a stock
dividend on the IMS HEALTH Common Stock payable in shares of IMS HEALTH Common
Stock or subdivisions, consolidations or combinations of the IMS HEALTH Common
Stock occurring, in any such case, prior to the IMS HEALTH Rights Distribution
Date.
 
    Shares of IMS HEALTH Participating Preferred Stock purchasable upon exercise
of the IMS HEALTH Rights will not be redeemable. Each share of IMS HEALTH
Participating Preferred Stock will be entitled, when, as and if declared, to a
minimum preferential quarterly dividend payment of $10 per share but will be
entitled to an aggregate dividend of 1,000 times the dividend declared per share
of IMS HEALTH Common Stock. In the event of liquidation, dissolution or winding
up of IMS HEALTH, the holders of the IMS HEALTH Participating Preferred Stock
will be entitled to a minimum preferential liquidation payment of $100 per share
(plus any accrued but unpaid dividends) but will be entitled to an aggregate
payment of 1,000 times the payment made per share of IMS HEALTH Common Stock.
Each share of IMS HEALTH Participating Preferred Stock will have 1,000 votes,
voting together with the IMS HEALTH Common Stock. Finally, in the event of any
merger, consolidation or other transaction in which shares of IMS HEALTH Common
Stock are converted or exchanged, each share of IMS HEALTH Participating
Preferred Stock will be entitled to receive 1,000 times the amount received per
share of IMS HEALTH Common Stock. These rights are protected by customary
antidilution provisions.
 
    Because of the nature of the IMS HEALTH Participating Preferred Stock's
dividend, liquidation and voting rights, the value of the one one-thousandth
interest in a share of IMS HEALTH Participating Preferred Stock purchasable upon
exercise of each IMS HEALTH Right should approximate the value of one share of
IMS HEALTH Common Stock.
 
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<PAGE>
    In the event that any person or group of affiliated or associated persons
becomes an IMS HEALTH Acquiring Person, each holder of an IMS HEALTH Right,
other than IMS HEALTH Rights beneficially owned by the IMS HEALTH Acquiring
Person (which will thereupon become void), will thereafter have the right to
receive upon exercise of an IMS HEALTH Right and payment of the IMS HEALTH
Participating Preferred Stock Purchase Price, that number of shares of IMS
HEALTH Common Stock having a market value of two times the IMS HEALTH
Participating Preferred Stock Purchase Price.
 
    In the event that, after a person or group has become an IMS HEALTH
Acquiring Person, IMS HEALTH is acquired in a merger or other business
combination transaction or 50% or more of its consolidated assets or earning
power are sold, proper provision will be made so that each holder of an IMS
HEALTH Right (other than IMS HEALTH Rights beneficially owned by an IMS HEALTH
Acquiring Person which will have become void) will thereafter have the right to
receive, upon the exercise thereof, that number of shares of common stock of the
person with whom IMS HEALTH has engaged in the foregoing transaction (or its
parent), which number of shares at the time of such transaction will have a
market value of two times the IMS HEALTH Participating Preferred Stock Purchase
Price.
 
    At any time after any person or group becomes an IMS HEALTH Acquiring Person
and prior to the acquisition by such person or group of 50% or more of the
outstanding shares of IMS HEALTH Common Stock or the occurrence of an event
described in the prior paragraph, the Board of Directors of IMS HEALTH may
exchange the IMS HEALTH Rights (other than IMS HEALTH Rights owned by such
person or group which will have become void), in whole or in part, at an
exchange ratio of one share of IMS HEALTH Common Stock, or a fractional share of
IMS HEALTH Participating Preferred Stock of equivalent value (or of a share of a
class or series of IMS HEALTH's Preferred Stock having similar rights,
preferences and privileges), per IMS HEALTH Right (subject to adjustment).
 
    With certain exceptions, no adjustment in the IMS HEALTH Participating
Preferred Stock Purchase Price will be required until cumulative adjustments
require an adjustment of at least 1% in such IMS HEALTH Participating Preferred
Stock Purchase Price. No fractional shares of IMS HEALTH Participating Preferred
Stock will be issued (other than fractions which are integral multiples of one
one-thousandth of a share of IMS HEALTH Participating Preferred Stock, which
may, at the election of IMS HEALTH, be evidenced by depositary receipts) and in
lieu thereof, an adjustment in cash will be made based on the market price of
the IMS HEALTH Participating Preferred Stock on the last trading period to the
date of exercise.
 
    At any time prior to the time an IMS HEALTH Acquiring Person becomes such,
the Board of Directors of IMS HEALTH may redeem the IMS HEALTH Rights in whole,
but not in part, at a price of $.01 per IMS HEALTH Right (hereinafter referred
to in this description of IMS HEALTH Rights as the "IMS HEALTH Right Redemption
Price"). The redemption of the IMS HEALTH Rights may be made effective at such
time, on such basis and with such conditions as the Board of Directors in its
sole discretion may establish. Immediately upon any redemption of the IMS HEALTH
Rights, the right to exercise the IMS HEALTH Rights will terminate and the only
right of the holders of IMS HEALTH Rights will be to receive the IMS HEALTH
Right Redemption Price.
 
    For so long as the IMS HEALTH Rights are then redeemable, IMS HEALTH may,
except with respect to the IMS HEALTH Right Redemption Price, amend the IMS
HEALTH Rights in any manner. After the IMS HEALTH Rights are no longer
redeemable, IMS HEALTH may, except with respect to the IMS HEALTH Right
Redemption Price, amend the IMS HEALTH Rights in any manner that does not
adversely affect the interests of holders of the IMS HEALTH Rights.
 
    Until an IMS HEALTH Right is exercised, the holder thereof, as such, will
have no rights as a stockholder of IMS HEALTH, including, without limitation,
the right to vote or to receive dividends.
 
    A copy of the IMS HEALTH Rights Agreement will be filed as an exhibit to the
Registration Statement on Form 10 of IMS HEALTH in respect of the registration
of the IMS HEALTH Common
 
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<PAGE>
Stock under the Exchange Act. A copy of the IMS HEALTH Rights Agreement is
available free of charge from IMS HEALTH. The summary description of the IMS
HEALTH Rights set forth above does not purport to be complete and is qualified
in its entirety by reference to the IMS HEALTH Rights Agreement, as the same may
be amended from time to time, which is hereby incorporated herein by reference.
 
CERTAIN EFFECTS OF THE IMS HEALTH RIGHTS AGREEMENT
 
    The IMS HEALTH Rights Agreement is designed to protect stockholders of IMS
HEALTH in the event of unsolicited offers to acquire IMS HEALTH and other
coercive takeover tactics which, in the opinion of the Board of Directors of IMS
HEALTH, could impair its ability to represent stockholder interests. The
provisions of the IMS HEALTH Rights Agreement may render an unsolicited takeover
of IMS HEALTH more difficult or less likely to occur or might prevent such a
takeover, even though such takeover may offer IMS HEALTH's stockholders the
opportunity to sell their stock at a price above the prevailing market rate and
may be favored by a majority of the stockholders of IMS HEALTH.
 
NO PREEMPTIVE RIGHTS
 
    No holder of any class of stock of IMS HEALTH authorized at the time of the
Distribution will have any preemptive right to subscribe to any securities of
IMS HEALTH of any kind or class.
 
DELAWARE GENERAL CORPORATION LAW
 
    The terms of Section 203 of the General Corporation Law of the State of
Delaware (the "DGCL") apply to IMS HEALTH since it is a Delaware corporation.
Pursuant to Section 203, with certain exceptions, a Delaware corporation may not
engage in any of a broad range of business combinations, such as mergers,
consolidations and sales of assets, with an "interested stockholder" for a
period of three years from the time that such person became an interested
stockholders unless (a) the transaction that results in the person's becoming an
interested stockholder or the business combination is approved by the board of
directors of the corporation before the person becomes an interested
stockholder, (b) upon consummation of the transaction which results in the
stockholder becoming an interested stockholder, the interested stockholder owns
85% or more of the voting stock of the corporation outstanding at the time the
transaction commenced, excluding shares owned by persons who are directors and
also officers and shares owned by certain employee stock plans or (c) on or
after the time the person becomes an interested stockholder, the business
combination is approved by the corporation's board of directors and by holders
of at least two-thirds of the corporation's outstanding voting stock, excluding
shares owned by the interested stockholder, at a meeting of stockholders. Under
Section 203, an "interested stockholder" is defined as any person, other than
the corporation and any direct or indirect majority-owned subsidiary, that is
(a) the owner of 15% or more of the outstanding voting stock of the corporation
or (b) an affiliate or associate of the corporation and was the owner of 15% or
more of the outstanding voting stock of the corporation at any time within the
three-year period immediately prior to the date on which it is sought to be
determined whether such person is an interested stockholder. Section 203 does
not apply to a corporation that so provides in an amendment to its certificate
of incorporation or by-laws passed by a majority of its outstanding shares, but
such stockholder action does not become effective for 12 months following its
adoption and would not apply to persons who were already interested stockholders
at the time of the amendment. IMS HEALTH's Restated Certificate of Incorporation
does not exclude IMS HEALTH from the restrictions imposed under Section 203.
 
    Under certain circumstances, Section 203 makes it more difficult for a
person who would be an "interested stockholder" to effect various business
combinations with a corporation for a three-year period. The provisions of
Section 203 may encourage companies interested in acquiring IMS HEALTH to
negotiate in advance with IMS HEALTH's Board of Directors, because the
stockholder approval requirement would be avoided if the Board of Directors
approves either the business combination or the
 
                                       69
<PAGE>
transaction which results in the stockholder becoming an interested stockholder.
Such provisions also may have the effect of preventing changes in the Board of
Directors of IMS HEALTH. It is further possible that such provisions could make
it more difficult to accomplish transactions which stockholders may otherwise
deem to be in their best interests.
 
PROVISIONS OF IMS HEALTH RESTATED CERTIFICATE OF INCORPORATION AND AMENDED AND
  RESTATED BY-LAWS AFFECTING CHANGE IN CONTROL
 
    Certain provisions of the IMS HEALTH Restated Certificate of Incorporation
and Amended and Restated By-laws may delay or make more difficult unsolicited
acquisitions or changes of control of IMS HEALTH. It is believed that such
provisions will enable IMS HEALTH to develop its business in a manner that will
foster its long-term growth without disruption caused by the threat of a
takeover not deemed by its Board of Directors to be in the best interests of IMS
HEALTH and its stockholders. Such provisions could have the effect of
discouraging third parties from making proposals involving an unsolicited
acquisition or change of control of IMS HEALTH, although such proposals, if
made, might be considered desirable by a majority of IMS HEALTH's stockholders.
Such provisions may also have the effect of making it more difficult for third
parties to cause the replacement of the current Board of Directors of IMS
HEALTH. These provisions include (i) the availability of capital stock for
issuance from time to time at the discretion of the Board of Directors (see
"--Authorized but Unissued Capital Stock"), (ii) prohibitions against
stockholders calling a special meeting of stockholders or acting by written
consent in lieu of a meeting, (iii) requirements for advance notice for raising
business or making nominations at stockholders' meetings, (iv) the ability of
the Board of Directors to increase the size of the board and to appoint
directors to newly created directorships, (v) a classified Board of Directors
and (vi) higher than majority requirements to make certain amendments to the
By-laws and Certificate of Incorporation. These provisions are present in the
Restated Certificate of Incorporation or Amended and Restated By-laws of
Cognizant.
 
    NO STOCKHOLDER ACTION BY WRITTEN CONSENT; SPECIAL MEETINGS
 
    The IMS HEALTH Restated Certificate of Incorporation and Amended and
Restated By-laws provide that stockholder action can be taken only at an annual
or special meeting and cannot be taken by written consent in lieu of a meeting.
The IMS HEALTH Restated Certificate of Incorporation and Amended and Restated
By-laws also provide that special meetings of the stockholders can be called
only by the Chief Executive Officer of IMS HEALTH or by a vote of the majority
of the Board of Directors. Furthermore, the By-laws of IMS HEALTH provide that
only such business as is specified in the notice of any such special meeting of
stockholders may come before such meeting.
 
    ADVANCE NOTICE FOR RAISING BUSINESS OR MAKING NOMINATIONS AT MEETINGS
 
    The By-laws of IMS HEALTH establish an advance notice procedure for
stockholder proposals to be brought before an annual meeting of stockholders and
for nominations by stockholders of candidates for election as directors at an
annual or special meeting at which directors are to be elected. Only such
business may be conducted at an annual meeting of stockholders as has been
brought before the meeting by, or at the direction of, the Chairman of the Board
of Directors, or by a stockholder of IMS HEALTH who is entitled to vote at the
meeting who has given to the Secretary of IMS HEALTH timely written notice, in
proper form, of the stockholder's intention to bring that business before the
meeting. The chairman of such meeting has the authority to make such
determinations. Only persons who are nominated by, or at the direction of, the
Chairman of the Board of Directors, or who are nominated by a stockholder who
has given timely written notice, in proper form, to the Secretary prior to a
meeting at which directors are to be elected will be eligible for election as
directors of IMS HEALTH.
 
    To be timely, a stockholder's notice of business to be brought before an
annual meeting and nominations of candidates for election as directors at any
annual meeting shall be delivered to the Secretary of IMS HEALTH at the
principal executive offices of IMS HEALTH not less than 70 days nor
 
                                       70
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more than 90 days prior to the first anniversary of the preceding year's annual
meeting; PROVIDED, HOWEVER, that in the event that the date of the annual
meeting is advanced by more than 20 days, or delayed by more than 70 days, from
such anniversary date, notice by the stockholder to be timely must be so
delivered not earlier than the ninetieth day prior to such annual meeting and
not later than the close of business on the later of the seventieth day prior to
such annual meeting or the tenth day following the day on which public
announcement of the date of such meeting is first made.
 
    To be timely, a stockholder's notice of nominations of persons for election
to the Board of Directors may be made at such a special meeting of stockholders
if the stockholder's notice shall be delivered to the Secretary of IMS HEALTH at
the principal executive offices of IMS HEALTH not earlier than the ninetieth day
prior to such special meeting and not later than the close of business on the
later of the seventieth day prior to such special meeting or the tenth day
following the day on which public announcement is first made of the date of the
special meeting and of the nominees proposed by the Board of Directors to be
elected at such meeting.
 
    The notice of any nomination for election as a director must set forth the
name and address of, and the class and number of shares of IMS HEALTH held by,
the stockholder who intends to make the nomination and the beneficial owner, if
any, on whose behalf the nomination is being made; the name and address of the
person or persons to be nominated; a representation that the stockholder is a
holder of record of stock of IMS HEALTH entitled to vote at such meeting and
intends to appear in person or by proxy at the meeting to nominate the person or
persons specified in the notice; a description of all arrangements or
understandings between the stockholder and each nominee and any other person or
persons (naming such person or persons) pursuant to which the nomination or
nominations are to be made by the stockholder; such other information regarding
each nominee proposed by such stockholder as would have been required to be
included in a proxy statement filed pursuant to the proxy rules of the SEC had
each nominee been nominated, or intended to be nominated, by the Board of
Directors; and the consent of each nominee to serve as a director if so elected.
 
    NUMBER OF DIRECTORS; FILLING OF VACANCIES; REMOVAL
 
    The IMS HEALTH Restated Certificate of Incorporation and Amended and
Restated By-laws provide that newly created directorships resulting from an
increase in the authorized number of directors (or any vacancy) may be filled by
a vote of a majority of directors then in office. Accordingly, the Board of
Directors of IMS HEALTH may be able to prevent any stockholder from obtaining
majority representation on the Board of Directors by increasing the size of the
board and filling the newly created directorships with its own nominees. If any
applicable provision of the DGCL expressly confers power on stockholders to fill
such a directorship at a special meeting of stockholders, such a directorship
may be filled at such meeting only by the affirmative vote of at least 80% in
voting power of all shares of IMS HEALTH entitled to vote generally in the
election of directors, voting as a single class. Directors may be removed only
for cause, and only by the affirmative vote of at least 80% in voting power of
all shares of IMS HEALTH entitled to vote generally in the election of
directors, voting as a single class.
 
    CLASSIFIED BOARD OF DIRECTORS
 
    The IMS HEALTH Restated Certificate of Incorporation provides for IMS
HEALTH's Board of Directors to be divided into three classes of directors
serving staggered three-year terms. As a result, approximately one third of IMS
HEALTH's Board of Directors will be elected each year. See "IMS HEALTH
Management and Executive Compensation--IMS HEALTH Board of Directors".
 
    IMS HEALTH believes that a classified board will help to assure the
continuity and stability of its Board of Directors, and its business strategies
and policies as determined by its Board of Directors, because a majority of the
directors at any given time will have prior experiences as directors of IMS
HEALTH. This provision should also help to ensure that IMS HEALTH's Board of
Directors, if
 
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confronted with an unsolicited proposal from a third party that has acquired a
block of IMS HEALTH's voting stock, will have sufficient time to review the
proposal and appropriate alternatives and to seek the best available result for
all stockholders.
 
    This provision could prevent a party who acquires control of a majority of
the outstanding voting stock from obtaining control of IMS HEALTH's Board of
Directors until the second annual stockholders meeting following the date the
acquiror obtains the controlling stock interest, could have the effect of
discouraging a potential acquiror from making a tender offer or otherwise
attempting to obtain control of IMS HEALTH and could thus increase the
likelihood that incumbent directors will retain their positions.
 
    AMENDMENTS TO THE AMENDED AND RESTATED BY-LAWS
 
    The IMS HEALTH Restated Certificate of Incorporation provides that the
affirmative vote of the holders of at least 80% in voting power of all the
shares of IMS HEALTH entitled to vote generally in the election of directors,
voting together as a single class, shall be required in order for the
stockholders to alter, amend or repeal any provision of the Amended and Restated
By-laws which is to the same effect as provisions contained in the Restated
Certificate of Incorporation relating to (i) the amendment of the Amended and
Restated By-laws, (ii) the classified Board of Directors and the filling of
director vacancies and (iii) calling and taking actions at meetings of
stockholders and prohibiting stockholders from taking action by written consent.
 
    AMENDMENTS TO THE RESTATED CERTIFICATE OF INCORPORATION
 
    The IMS HEALTH Restated Certificate of Incorporation requires the
affirmative vote of the holders of at least 80% in voting power of all the
shares of IMS HEALTH entitled to vote generally in the election of directors,
voting together as a single class, to alter, amend or repeal provisions of the
Restated Certificate of Incorporation relating to (i) the amendment of the
Restated Certificate of Incorporation and/or the Amended and Restated By-laws,
(ii) the classified Board of Directors and the filling of director vacancies and
(iii) calling and taking actions at meetings of stockholders and prohibiting
stockholders from taking action by written consent.
 
INDEMNIFICATION AND LIMITATION OF LIABILITY FOR DIRECTORS AND OFFICERS
 
    The IMS HEALTH Restated Certificate of Incorporation provides that IMS
HEALTH shall indemnify directors and officers to the fullest extent permitted by
the laws of the State of Delaware. The IMS HEALTH Restated Certificate of
Incorporation also provides that a director of IMS HEALTH shall not be liable to
the corporation or its stockholders for monetary damages for breach of fiduciary
duty as a director, except to the extent such exemption from liability or
limitation thereof is not permitted under the DGCL as the same exists or may
hereafter be amended.
 
    The indemnification rights conferred by the Restated Certificate of
Incorporation of IMS HEALTH are not exclusive of any other right to which a
person seeking indemnification may otherwise be entitled. IMS HEALTH will also
provide liability insurance for the directors and officers for certain losses
arising from claims or charges made against them, while acting in their
capacities as directors or officers.
 
                                       72
<PAGE>
                     NIELSEN MEDIA RESEARCH CAPITALIZATION
 
    The following table sets forth the capitalization of Nielsen Media Research
at March 31, 1998 on a historical basis, and at March 31, 1998 on a pro forma
basis, as adjusted to give effect to the Distribution and the transactions
contemplated thereby. The following data are qualified in their entirety by the
consolidated financial statements of Nielsen Media Research and other
information contained elsewhere in this Information Statement. See "Risk
Factors".
<TABLE>
<CAPTION>
                                                                                     (UNAUDITED)
                                                                     --------------------------------------------
<S>                                                                  <C>             <C>           <C>
                                                                     MARCH 31, 1998   PRO FORMA     PRO FORMA AT
                                                                         ACTUAL      ADJUSTMENTS   MARCH 31, 1998
                                                                     --------------  ------------  --------------
 
<CAPTION>
                                                                               ($ AMOUNTS IN THOUSANDS)
<S>                                                                  <C>             <C>           <C>
Cash and Cash Equivalents..........................................
                                                                          -------    ------------       -------
                                                                          -------    ------------       -------
 
Long-Term Debt.....................................................                             (1)
 
Divisional/Shareholders' Equity:
  Other Divisional Equity..........................................                             (  (2)
  Preferred Stock, par value $.01 per share, authorized --
    10,000,000 shares:
    outstanding -- none............................................
  Series Common Stock, par value $.01 per share, authorized --
    10,000,000 shares:
    outstanding -- none............................................
  Common Stock, par value $.01 per share, authorized -- 400,000,000
    shares:
    outstanding --      shares.....................................                             (2)
Capital Surplus....................................................                             (2)
Treasury Stock --      shares......................................                             (2)
                                                                          -------    ------------       -------
      Total Equity.................................................
                                                                          -------    ------------       -------
      Total Capitalization.........................................    $              $              $
                                                                          -------    ------------       -------
                                                                          -------    ------------       -------
</TABLE>
 
SUMMARY OF SIGNIFICANT PRO FORMA CAPITALIZATION ASSUMPTIONS
 
(1) In connection with the Distribution, Cognizant will borrow $300 million,
    which will be used to repay intercompany liabilities. This debt will be the
    obligation of Nielsen Media Research after the Distribution. The adjustment
    is reflected as an increase in long-term debt.
 
(2) To reflect the recapitalization of Nielsen Media Research in connection with
    the Distribution.
 
                                       73
<PAGE>
                 NIELSEN MEDIA RESEARCH SELECTED FINANCIAL DATA
 
    The following data are qualified in their entirety by the financial
statements of Nielsen Media Research and other information contained elsewhere
in this Information Statement. The financial data as of December 31, 1997 and
1996, and for the years ended December 31, 1997, 1996 and 1995, have been
derived from the audited financial statements of Nielsen Media Research
contained elsewhere in this Information Statement. The financial data as of
March 31, 1998 and 1997, and December 31, 1994 and 1993, for the three months
ended March 31, 1998 and 1997 and for the years ended December 31, 1994 and
1993, are unaudited. The historical financial statements of Nielsen Media
Research contained in this Information Statement are presented as if Nielsen
Media Research were a separate entity for all periods presented. The following
financial data should be read in conjunction with the information set forth
under "Nielsen Media Research Management's Discussion and Analysis of Financial
Condition and Results of Operations" and Nielsen Media Research's Consolidated
Financial Statements and Notes thereto appearing elsewhere in this Information
Statement.
<TABLE>
<CAPTION>
                                           THREE MONTHS ENDED
                                                AND AS OF
                                                MARCH 31,                    YEAR ENDED AND AS OF DECEMBER 31,
                                          ---------------------  ----------------------------------------------------------
<S>                                       <C>        <C>         <C>         <C>         <C>         <C>         <C>
                                            1998        1997        1997        1996        1995        1994        1993
                                          ---------  ----------  ----------  ----------  ----------  ----------  ----------
 
<CAPTION>
                                               (UNAUDITED)                                                (UNAUDITED)
                                                           ($ AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                       <C>        <C>         <C>         <C>         <C>         <C>         <C>
INCOME STATEMENT DATA:
Operating Revenue.......................  $          $   86,271  $  358,594  $  319,404  $  288,652  $  250,303  $  209,894
Net Income..............................  $          $   12,730  $   52,475  $   47,605  $   40,412  $   30,115  $   19,661
Earnings Per Share of Common
  Stock--Basic..........................  $          $     0.07  $     0.32  $     0.28  $     0.24  $     0.18  $       --
Earnings Per Share of Common
  Stock--Diluted........................  $          $     0.07  $     0.32  $     0.28  $     0.24  $     0.18  $       --
 
BALANCE SHEET DATA:
Total Assets............................  $          $  177,200  $  192,434  $  170,331  $  134,521  $  138,842  $   97,831
Long-Term Debt..........................  $          $       --  $       --  $       --  $       78  $      244  $      411
</TABLE>
 
                                       74
<PAGE>
                 NIELSEN MEDIA RESEARCH UNAUDITED CONSOLIDATED
                         PRO FORMA FINANCIAL STATEMENTS
 
    The historical Consolidated Statement of Income for Nielsen Media Research
has been derived from the historical (pre-Distribution) Consolidated Statement
of Income of Cognizant and is presented as if Nielsen Media Research had been
operated as a separate entity. The Unaudited Consolidated Pro Forma Statement of
Income of Nielsen Media Research for the year ended December 31, 1997 presents
the results of operations of Nielsen Media Research and all material pro forma
adjustments necessary for this purpose.
 
    The Unaudited Consolidated Pro Forma Statement of Income and Statement of
Financial Position of Nielsen Media Research should be read in conjunction with
the historical consolidated financial statements of Nielsen Media Research
contained elsewhere in this Information Statement. The pro forma data are for
informational purposes only and may not necessarily reflect future results of
operations or what the results of operations would have been had Nielsen Media
Research been operated as a separate entity.
 
    The following tables set forth the Nielsen Media Research historical
Consolidated Statement of Income for the year ended December 31, 1997 and the
three months ended March 31, 1998, giving effect to the impact of interest
expense as of the beginning of the period presented related to the anticipated
borrowing by Cognizant of $300 million of third-party debt in connection with
the repayment of existing intercompany liabilities to IMS HEALTH. The Nielsen
Media Research Unaudited Condensed Consolidated Pro Forma Statement of Financial
Position as of March 31, 1998 gives effect to the anticipated borrowing of $300
million of third party debt. This debt will be an obligation of Nielsen Media
Research after the Distribution.
 
                 NIELSEN MEDIA RESEARCH UNAUDITED CONSOLIDATED
                         PRO FORMA STATEMENT OF INCOME
 
<TABLE>
<CAPTION>
                                                                              YEAR ENDED DECEMBER 31, 1997
                                                                       -------------------------------------------
                                                                                                      PRO FORMA
                                                                       NIELSEN MEDIA    PRO FORMA   NIELSEN MEDIA
                                                                          RESEARCH     ADJUSTMENTS     RESEARCH
                                                                       --------------  -----------  --------------
<S>                                                                    <C>             <C>          <C>
                                                                             ($ AMOUNTS IN THOUSANDS, EXCEPT
                                                                                     PER SHARE DATA)
OPERATING REVENUE....................................................  $      358,594   $       0   $      358,594
                                                                       --------------  -----------  --------------
Operating Costs and Selling and Administrative Expense...............         239,670           0          239,670
Depreciation and Amortization........................................          28,663           0           28,663
                                                                       --------------  -----------  --------------
OPERATING INCOME.....................................................          90,261           0           90,261
                                                                       --------------  -----------  --------------
Non-Operating Income--Net............................................               0     (19,300)(1)        (19,300)
                                                                       --------------  -----------  --------------
Income Before Provision for Income Taxes.............................          90,261     (19,300)          70,961
Provision for Income Taxes...........................................         (37,786)      8,080          (29,706)
                                                                       --------------  -----------  --------------
NET INCOME...........................................................  $       52,475   $ (11,220)  $       41,255
                                                                       --------------  -----------  --------------
                                                                       --------------  -----------  --------------
BASIC EARNINGS PER SHARE OF COMMON STOCK.............................  $         0.32   $   (0.07)  $         0.25
DILUTED EARNINGS PER SHARE OF COMMON STOCK...........................  $         0.32   $   (0.08)(2) $         0.24
Average Number of Shares Outstanding--Basic..........................     165,163,000          --      165,163,000
Average Number of Shares Outstanding--Diluted........................     165,664,990                  165,664,990
</TABLE>
 
  See Summary of Adjustments to Unaudited Consolidated Pro Forma Statements of
                                    Income.
 
                                       75
<PAGE>
            NIELSEN MEDIA RESEARCH UNAUDITED CONSOLIDATED PRO FORMA
                              STATEMENT OF INCOME
 
<TABLE>
<CAPTION>
                                                                       THREE MONTHS ENDED MARCH 31, 1998
                                                                   -----------------------------------------
                                                                                                 PRO FORMA
                                                                   NIELSEN MEDIA   PRO FORMA   NIELSEN MEDIA
                                                                     RESEARCH     ADJUSTMENTS    RESEARCH
                                                                   -------------  -----------  -------------
<S>                                                                <C>            <C>          <C>
                                                                        ($ AMOUNTS IN THOUSANDS, EXCEPT
                                                                                PER SHARE DATA)
OPERATING REVENUE................................................   $              $            $
                                                                   -------------  -----------  -------------
Operating Costs and Selling and Administrative Expense...........
Depreciation and Amortization....................................
                                                                   -------------  -----------  -------------
OPERATING INCOME.................................................
                                                                   -------------  -----------  -------------
Non-Operating Income--Net........................................                           (1)
                                                                   -------------  -----------  -------------
Income Before Provision for Income Taxes.........................
Provision for Income Taxes.......................................
                                                                   -------------  -----------  -------------
NET INCOME.......................................................   $              $            $
                                                                   -------------  -----------  -------------
                                                                   -------------  -----------  -------------
BASIC EARNINGS PER SHARE OF COMMON STOCK.........................   $              $            $
DILUTED EARNINGS PER SHARE OF COMMON STOCK.......................   $              $        (2)  $
Average Number of Shares Outstanding--Basic......................
Average Number of Shares Outstanding--Diluted....................
</TABLE>
 
SUMMARY OF ADJUSTMENTS TO UNAUDITED CONSOLIDATED PRO FORMA STATEMENTS OF INCOME
 
(1) Non-Operating Income--Net includes the impact of interest expense as of the
    beginning of the period presented related to $300 million of debt at an
    assumed annual interest rate of 6.4%.
 
(2) Diluted Earnings Per Share of Common Stock includes the impact ($0.01) of
    the conversion of Cognizant stock options held by Nielsen Media Research
    Employees into Nielsen Medica Research stock options in accordance with the
    methodology described under "Relationship Between IMS HEALTH and Nielsen
    Media Research After the Distribution--Employee Benefits Agreement".
 
                                       76
<PAGE>
       NIELSEN MEDIA RESEARCH UNAUDITED CONDENSED CONSOLIDATED PRO FORMA
                        STATEMENT OF FINANCIAL POSITION
 
<TABLE>
<CAPTION>
                                                                                        MARCH 31, 1998
                                                                            ---------------------------------------
                                                                                                         PRO FORMA
                                                                              NIELSEN                     NIELSEN
                                                                               MEDIA       PRO FORMA       MEDIA
                                                                             RESEARCH     ADJUSTMENTS    RESEARCH
                                                                            -----------  -------------  -----------
<S>                                                                         <C>          <C>            <C>
Assets
Current Assets
  Cash and Cash Equivalents...............................................
  Accounts Receivable--Net................................................
  Other Current Assets....................................................
Total Current Assets......................................................
                                                                            -----------       ------    -----------
Property, Plant and Equipment--Net........................................
Computer Software.........................................................
Intangibles...............................................................
Other Assets..............................................................
                                                                            -----------       ------    -----------
Total Assets..............................................................
                                                                            -----------       ------    -----------
 
Liabilities and Divisional Equity
 
Current Liabilities.......................................................
Long-Term Debt............................................................                          (1)
Other Liabilities.........................................................
                                                                            -----------       ------    -----------
Total Liabilities.........................................................
 
Divisional/Shareholders' Equity...........................................                          (2)
  Other Divisional Equity.................................................
  Preferred Stock, par value $.01 per share, authorized-- 10,000,000
    shares:
    outstanding--none.....................................................
  Series Common Stock, par value $.01 per share, authorized-- 10,000,000
    shares:
    outstanding--none.....................................................
  Common Stock, par value $.01 per share, authorized-- 400,000,000 shares:
    outstanding--    shares...............................................
Capital Surplus...........................................................
Treasury Stock--    shares................................................
                                                                            -----------       ------    -----------
      Total Equity........................................................
                                                                            -----------       ------    -----------
 
Total Liabilities and Equity..............................................
                                                                            -----------       ------    -----------
</TABLE>
 
SUMMARY OF ADJUSTMENTS TO UNAUDITED CONDENSED CONSOLIDATED PRO FORMA STATEMENT
  OF FINANCIAL POSITION
 
(1) Long-term debt reflects the borrowing by Cognizant of $300 million to repay
    intercompany liabilities. This debt will be an obligation of Nielsen Media
    Research after the Distribution.
 
(2) Divisional/Shareholders' Equity reflects the recapitalization of Nielsen
    Media Research in connection with the Distribution.
 
                                       77
<PAGE>
          NIELSEN MEDIA RESEARCH MANAGEMENT'S DISCUSSION AND ANALYSIS
                OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
FINANCIAL REVIEW
 
    DOLLAR AMOUNTS IN THOUSANDS
 
    On January 15, 1998, Cognizant announced a plan to separate into two
independent, publicly traded companies--Nielsen Media Research and IMS HEALTH.
The Distribution is subject to final approval by the Cognizant Board of
Directors and obtaining a ruling from the Internal Revenue Service with respect
to the tax-free treatment of the transaction. See Notes 1 and 8 to the Nielsen
Media Research Consolidated Financial Statements.
 
THREE MONTHS ENDED MARCH 31, 1998 COMPARED WITH THREE MONTHS ENDED MARCH 31,
  1997
 
    [TO COME]
 
YEAR ENDED DECEMBER 31, 1997 COMPARED WITH YEAR ENDED DECEMBER 31, 1996
 
    Nielsen Media Research revenue increased 12.3% in 1997 to $358,594 from
$319,404 in 1996. Revenue growth resulted from additional cable customers,
entrance into three new metered markets, an increase in the level of special
analyses and the continued growth of the Hispanic service.
 
    Operating costs and selling and administrative expenses in 1997 were
$239,670, compared with $212,214 in 1996, an increase of 12.9%. The increase
reflects higher costs related to increased investment in the business, including
the opening of new metered markets and expanded Hispanic services.
 
    Operating income in 1997 was $90,261 compared with $81,961 in 1996, an
increase of 10.1%. The increase resulted primarily from the factors noted above,
partially offset by Year 2000 expenses of $2,681. Excluding the Year 2000
expenses, operating income would have increased 13.4%.
 
    Operating margin in 1997 was 25.2%, compared with 25.7% in 1996. Excluding
the Year 2000 expenses mentioned above, 1997 operating margin was 25.9%.
 
    Nielsen Media Research's consolidated 1997 and 1996 effective tax rate was
41.9%. The tax rates were computed on a separate-company basis.
 
    Net income in 1997 was $52,475, compared with $47,605 in 1996, an increase
of 10.2%.
 
YEAR ENDED DECEMBER 31, 1996 COMPARED WITH YEAR ENDED DECEMBER 31, 1995
 
    Revenue increased 10.7% in 1996 to $319,404 from $288,652 in 1995. Revenue
growth resulted from the expansion of network schedules, increased demand for
custom analyses, addition of cable customers and entrance into two new metered
markets.
 
    Operating costs and selling and administrative expenses in 1996 were
$212,214, compared with $194,741 in 1995, an increase of 9.0%. Operating costs
and selling and administrative expenses in 1995 include a non-recurring charge
of $2,300. Excluding this charge, the increase was 10.3%. The higher operating
costs and selling and administrative expenses were the result of additional
costs related to increased investments in the business, including expanded
metered markets and cable operations.
 
    Operating income in 1996 increased 17.8% to $81,961 from $69,568 in 1995.
Included in the 1995 results were $2,300 of non-recurring charges. Excluding
these charges, the 1996 operating income growth rate was 14.0%. The increase was
the result of the factors mentioned above.
 
                                       78
<PAGE>
    Operating margin in 1996 was 25.7%, compared with 24.1% in 1995. The 1995
margin includes $2,300 of non-recurring charges. Excluding these charges, the
operating margin was 24.9%.
 
    Nielsen Media Research's consolidated effective tax rate was 41.9%, in 1996
and 1995. The tax rates were computed on a separate-company basis.
 
    Net income in 1996 was $47,605, compared with $40,412 in 1995, an increase
of 17.8%.
 
CHANGES IN FINANCIAL POSITION AT DECEMBER 31, 1997 COMPARED WITH DECEMBER 31,
  1996
 
    Accounts Receivable-Net increased to $51,986 at December 31, 1997 from
$44,773 at December 31, 1996, principally due to higher receivables from
increased revenues from cable customers and new metered markets.
 
    Property, Plant and Equipment increased to $55,050 at December 31, 1997 from
$44,310 at December 31, 1996, principally due to equipment purchases for metered
markets.
 
    Computer Software increased to $43,093 at December 31, 1997 from $35,653 at
December 31, 1996, principally due to software related to the transition from
mainframe to client server technology.
 
    Unbilled Accounts Receivable (included in Other Assets) decreased to $12,566
at December 31, 1997 from $15,547 at December 31, 1996, principally due to the
timing of contract billings.
 
    Accounts Payable increased to $14,355 at December 31, 1997 from $6,876 at
December 31, 1996, principally due to the timing of payments.
 
    Deferred Income Taxes increased to $34,394 at December 31, 1997 from $29,379
at December 31, 1996, principally due to the future tax impact arising from
computer software additions.
 
    Divisional Equity increased to $101,583 at December 31, 1997 from $99,353 at
December 31, 1996, principally due to net income of $52,475, partially offset by
transfers to Cognizant of $51,107.
 
ADOPTION OF STATEMENTS OF FINANCIAL ACCOUNTING STANDARDS
 
    In 1995, Nielsen Media Research recorded a pre-tax charge of $2,300 that
included an impairment loss of $500 related to long-lived assets for which
management, having the authority to approve such business decisions, committed
to a plan to replace certain production systems.
 
    Statement of Financial Accounting Standards ("SFAS") No. 121, "Accounting
for the Impairment of Long-Lived Assets and for Long-Lived Assets to be Disposed
of" requires that long-lived assets and certain intangibles be reviewed for
impairment whenever events or changes in circumstances indicate that the
carrying amount of an asset may not be recoverable. In general, this statement
requires recognition of an impairment loss when the sum of undiscounted expected
future cash flows is less than the carrying amount of such assets. The
measurement for such impairment loss is then based on the fair value of the
asset. While SFAS No. 121 affected the measurement of the impairment charge
noted above, it had no effect on the timing of recognition of the impairment.
 
    The 1995 charge principally reflected an impairment loss related to the
revaluation of certain production systems which were replaced or no longer used
and the write-down of an equity investment.
 
    In October 1995, the Financial Accounting Standards Board (``FASB") issued
SFAS No. 123 ``Accounting for Stock-Based Compensation", which requires that
companies with stock-based compensation plans either recognize compensation
expense based on the fair value of options granted or continue to apply the
existing accounting rules and disclose pro forma net income and earnings per
share assuming the fair value method had been applied. Nielsen Media Research
has chosen to continue applying Accounting Principles Board Opinion No. 25 and
related interpretations in accounting for its plans. Accordingly, no
compensation cost has been recognized for the fixed stock option plans. If
compensation cost for Nielsen Media Research's stock-based compensation plans
had been determined based on the fair value at the
 
                                       79
<PAGE>
grant dates for awards under those plans, consistent with the method of SFAS No.
123, Nielsen Media Research's net income and earnings per share would have been
reduced to the pro forma amounts as disclosed in Note 5 to the Nielsen Media
Research Consolidated Financial Statements.
 
    In February 1997, the FASB issued SFAS No. 128, "Earnings per Share", which
simplifies existing computational guidelines, revises disclosure requirements
and increases the comparability of earnings-per-share data on an international
basis. Basic earnings per common share are based on the weighted average number
of common shares outstanding in each year. Diluted earnings per common share
assume that outstanding common shares were increased by shares issuable upon
exercise of those stock options for which market price exceeds exercise price,
less shares which could have been purchased by Nielsen Media Research with
related proceeds. This statement has been adopted by Nielsen Media Research.
(See Note 2 to the Nielsen Media Research Consolidated Financial Statements.)
 
    In June 1997, the FASB issued SFAS No. 130, "Reporting Comprehensive
Income", which requires that changes in comprehensive income be shown in a
financial statement that is displayed with the same prominence as other
financial statements. This statement is effective for periods beginning after
December 15, 1997. Nielsen Media Research is in the process of evaluating the
disclosure requirements under this standard.
 
    In June 1997, the FASB issued SFAS No. 131, "Disclosures About Segments of
an Enterprise and Related Information", which changes the way public companies
report information about segments. SFAS No. 131, which is based on the
management approach to segment reporting, includes requirements to report
selected segment information quarterly and entity-wide disclosures about
products and services, major customers, and the material countries in which the
entity holds assets and reports revenues. This statement is effective for
periods beginning after December 15, 1997. Nielsen Media Research is in the
process of evaluating the disclosure requirements under this standard.
 
    In February 1998, the FASB issued SFAS No. 132, "Employers' Disclosures
About Pensions And Other Postretirement Benefits", which changes current
financial statement disclosure requirements from those required under SFAS No.
87, "Employers' Accounting for Pensions", SFAS No. 88, "Employers' Accounting
for Settlements and Curtailments of Defined Benefit Pension Plans and for
Termination Benefits", and SFAS No. 106, "Employers' Accounting for
Postretirement Benefits Other Than Pensions". The statement does not change the
existing measurement or recognition provisions of SFAS Nos. 87, 88 or 106, and
is effective for periods beginning after December 15, 1997. Nielsen Media
Research is in the process of evaluating the disclosure requirements under this
standard.
 
NON-U.S. OPERATING AND MONETARY ASSETS
 
    Nielsen Media Research operates in the U.S. and Canada. Approximately 3% of
Nielsen Media Research's revenues and 4% of operating income in 1997 were
derived from Canadian operations. As a result, fluctuations in the value of the
Canadian dollar relative to the U.S. dollar do not significantly affect Nielsen
Media Research's results of operations.
 
    Non-U.S. monetary assets are maintained in Canadian dollars. Changes in the
value of this currency relative to the U.S. dollar are charged or credited to
Divisional Equity. The effect of exchange rate changes during 1997 was not
material.
 
LIQUIDITY AND CAPITAL RESOURCES
 
    Cash and cash equivalents totaled $5,993 and $5,557 at December 31, 1997 and
1996, respectively. The increase in cash and cash equivalents of $436 was
primarily due to increased cash flow from operations, offset, in part, by
increased cash used in investing activities and transfers to Cognizant.
 
    Net cash provided by operating activities was $94,392, $64,667 and $90,273
in 1997, 1996 and 1995, respectively. The increase of $29,725 in cash provided
by operating activities in 1997 primarily reflected a
 
                                       80
<PAGE>
lower increase in accounts receivable, an increase in accounts payable and an
increase in postretirement benefits, offset, in part, by a lower increase in
deferred income taxes. The decrease of $25,606 in net cash provided by operating
activities in 1996 primarily reflected a higher level of accounts receivable and
a decrease in postretirement benefits, offset, in part, by an increase in
deferred income taxes.
 
    Net cash used in investing activities totaled $42,842 for 1997, compared
with $40,785 and $30,899 in 1996 and 1995, respectively. The increase of $2,057
in cash used in investing activities in 1997 primarily reflected an increase in
capital expenditures and an increase in additions to computer software. The
increase of $9,886 in cash used in investing activities in 1996 primarily
reflected an increase in capital expenditures and an increase in additions to
intangibles.
 
    Net cash used in financing activities totaled $51,107 for 1997, compared
with $19,069 and $58,755 in 1996 and 1995, respectively. The increase of $32,038
of cash used in financing activities in 1997 reflected an increase in the net
transfers to Cognizant/D&B. The decrease of $39,686 of cash used in financing
activities in 1996 reflected a decrease in the net transfer to Cognizant/D&B.
 
    On February 18, 1997 Cognizant announced that its Board of Directors had
authorized a systematic stock repurchase program to buy up to 8.5 million shares
of Cognizant's outstanding common stock. The stock purchases are held in
Treasury and reissued upon exercise of employee stock options. This program was
completed on September 5, 1997 at a total cost of $299,737.
 
    On October 21, 1997 Cognizant announced that its Board of Directors had
authorized a second systematic stock repurchase program to buy up to 10 million
shares of Cognizant's outstanding common stock. A portion of this program is
intended to cover option exercises. Through December 31, 1997, 574,600 shares
have been acquired at a total cost of $22,756. Nielsen Media Research's
management has not decided the extent to which Nielsen Media Research will
continue this stock repurchase program after the Distribution.
 
    Nielsen Media Research's existing balances of cash and cash equivalents and,
cash generated from operations and debt capacity are expected to be sufficient
to meet Nielsen Media Research's long-term and short-term cash requirements
including continued investment in the business.
 
YEAR 2000
 
    Many existing computer systems and software applications use two digits,
rather than four, to record years, e.g., "98" instead of "1998." Unless
modified, such systems will not properly record or interpret years after 1999,
which could lead to business disruptions. This is known as the "Year 2000
issue".
 
    Nielsen Media Research depends on systems and software both for its internal
operations as well as for the receipt of data used in its information products
and the transmission of those products to its customers. Nielsen Media Research
began to address the Year 2000 issue in 1996. It expects to complete upgrading
or replacing substantially all affected programs during 1998, with testing to be
done during 1999. The operating income impact of Year 2000 compliance in 1997
was $2,681. Based on current information, the operating income impact of Year
2000 compliance in 1998 is expected to be in the range of $8,000 to $9,000. Year
2000 compliance expenditures for 1999 are in the process of being determined;
however, the costs are expected to be less than in 1998. These costs are being
expensed as incurred.
 
DIVIDENDS
 
    The payment and level of cash dividends by Nielsen Media Research are
subject to the discretion of the Board of Directors of Nielsen Media Research.
Nielsen Media Research currently intends to retain future earnings for the
development of its business and does not anticipate paying cash dividends in the
near future. Future dividend decisions will be based on, and affected by, a
number of factors, including the operating results and financial requirements of
Nielsen Media Research on a stand-alone basis. There can be no assurance that
any dividends will be declared or paid.
 
                                       81
<PAGE>
                        NIELSEN MEDIA RESEARCH BUSINESS
 
GENERAL
 
    Nielsen Media Research conducts television audience measurement and related
services in the United States and, through a wholly owned subsidiary, Nielsen
Media Research, Ltd., in Canada.
 
    Nielsen Media Research estimates television audience size and demographics
and reports this and related information to advertisers, advertising agencies,
program syndicators, broadcast networks, cable networks, cable operators,
television stations, station representatives and others in order to increase the
effectiveness of television advertising and programming. This syndicated
information is offered on a subscription basis. Custom or ad-hoc analyses of the
data are also offered to subscribers. The information is used by subscribers to
buy, sell, plan and price television time and to make programming and scheduling
decisions.
 
    In 1997, advertisers spent approximately $42 billion in the United States on
national and local television advertising, according to McCann-Erickson
Worldwide, to bring a variety of programs and advertising messages to
approximately 98 million U.S. television households. This underscores the need
for television stations, networks, advertisers, advertising agencies and others
to understand how many households and what types of people are reached by such
programming.
 
    Nielsen Media Research estimates television audiences and reports data in
the United States primarily through these services: Nielsen Television Index,
Nielsen Syndication Services, Nielsen Homevideo Index, Nielsen Station Index,
Nielsen Hispanic Television Index and Nielsen Hispanic Station Index. In Canada,
Nielsen Media Research measures television audiences and reports data through
national and local market people meter services.
 
    Nielsen Media Research also offers services that enable advertisers to
manage their media spending by linking television ratings to commercial
occurrences, and that provide information to the expanding interactive media
industry.
 
NATIONAL SERVICES
 
    Through its U.S. national services, Nielsen Media Research serves the
television audience measurement needs of 6 national television broadcast
networks, 46 national and regional cable networks, more than 100 program
syndicators, and more than 150 national advertising agencies and advertisers.
Audience measurement data are collected nationally through Nielsen People Meters
installed in over 5,000 randomly selected households across the U.S. Audience
estimates are produced and delivered to subscribers daily. People meters not
only collect television set tuning data (which channel the set is tuned to) but
also the demographics of the audience (who in the household is watching).
 
    Three national services are offered in the United States:
 
    - NIELSEN TELEVISION INDEX (NTI) provides daily audience total and
      demographic estimates for all national broadcast network television
      programs to broadcast networks and agencies. This service was established
      in 1950.
 
    - NIELSEN HOMEVIDEO INDEX (NHI) - NATIONAL provides audience estimates of
      cable and pay cable television. This service was established in 1980.
 
    - NIELSEN SYNDICATION SERVICES (NSS) provides reports and services on both
      the local and national levels to the program syndication segment of the
      television industry. This service was established in 1985.
 
                                       82
<PAGE>
LOCAL SERVICES
 
    Nielsen Media Research's local services serve the television audience
measurement needs of more than 1,000 television stations, more than 150 local
cable operators and syndicators, and over 2,000 national, regional and local
advertising agencies and advertisers in over 200 local television markets
throughout the United States. Nielsen Media Research currently provides metered
service in 38 of the nation's largest markets representing about 59% of
television households in the United States. Six additional markets are scheduled
to be metered during 1998, bringing the total number of local metered markets to
44. Television set tuning data are collected electronically using a Nielsen
Media Research set meter. Household audience (as opposed to persons) estimates
are delivered daily to subscribers. In these markets, written diaries are used,
during designated measurement periods, to collect audience demographic estimates
for integration with the metered tuning data. Diaries are used in the balance of
local markets to collect both tuning and persons-viewing information during
designated periods.
 
    Two local services are offered in the United States:
 
    - NIELSEN STATION INDEX (NSI) provides local market television audience
      measurement to stations and agencies throughout the U.S. This service was
      established in 1954.
 
    - NIELSEN HOMEVIDEO INDEX (NHI) - LOCAL provides audience measurement
      services for more than 150 local cable operators.
 
U.S. HISPANIC SERVICES
 
    Hispanic Services provide both national and local television audience
measurement of U.S. Hispanic households.
 
    - NIELSEN HISPANIC TELEVISION INDEX (NHTI) provides viewing estimates of
      national Hispanic audiences. Begun in November 1992, the NHTI service
      remains the first and only metered national Hispanic audience measurement
      service. Based on a sample of 800 Hispanic households across the U.S., it
      uses the same methodology as the other national services (the Nielsen
      People Meter) to collect Hispanic audience data.
 
    - NIELSEN HISPANIC STATION INDEX (NHSI) uses a language-stratified sample to
      reflect the unique characteristics of each local Hispanic market. The NHSI
      service provides advertisers, agencies, networks and syndicators viewing
      information in more than a dozen television markets with significant
      Hispanic population. The data are collected using a people meter
      methodology in the Los Angeles market and a variety of set meter and diary
      methodologies in the remaining markets.
 
CANADIAN SERVICES
 
    In Canada, Nielsen Media Research has offered national people meter service
since 1989 to Canadian national and regional broadcasters, cable networks,
agencies and advertisers. Nielsen Media Research has also provided local people
meter service in Canada's two largest English-language markets, Toronto (since
1995) and Vancouver (begun in the fall of 1997) to local broadcasters, agencies
and advertisers.
 
OTHER SERVICES
 
    - MONITOR-PLUS. Nielsen Media Research's Monitor-Plus service links
      television ratings to commercial occurrence data and tracks "share of
      spending" and "share of voice" (the proportion of all television
      advertising within a product category attributable to a brand or
      advertiser, as expressed in rating points) by company, by brand, and by
      product category across fifteen monitored media. These include print,
      outdoor, radio and free-standing inserts as well as television, for which
      it also reports at the creative execution and campaign level. This service
      offers the data and tools necessary for advertisers and their agencies to
      actively manage their media spending by enabling them to
 
                                       83
<PAGE>
      understand their own performance and that of their competitors. Customers
      use the data to determine competitive advertising trends and performance
      within markets of interest. The media also use this service for sales
      planning and targeting.
 
      In January 1997, Monitor-Plus expanded service to 75 markets from 50,
      thereby matching the coverage of its principal competitor and market
      leader Competitive Media Reports. Monitor-Plus plans to deploy new digital
      data collection and processing technology in 1998.
 
    - NEW MEDIA SERVICES (NMS) is a successor to a service formed in 1980 that
      provides custom research and start-up services for newly developed
      syndicated products, both national and local. This includes measurement
      performance of non-traditional research such as place-based media and out-
      of-home studies. The automated tracking of the use of video news releases
      and the measuring of media exposure in airports and in-flight are two more
      examples of NMS research services.
 
    - NIELSEN INTERACTIVE SERVICES. In 1995, Nielsen Media Research formed a
      separate service to develop research products and services for the
      Internet and other interactive media.
 
      During 1995, Nielsen Media Research entered into a strategic relationship
      with Internet Profiles Corporation ("I/Pro") to jointly market and brand
      two Internet measurement tools: Netline (formerly I/COUNT), which monitors
      Web site usage and I/AUDIT, which audits and verifies audience usage and
      characteristics.
 
      In addition, separate from its agreement with I/Pro, Nielsen Media
      Research plans to establish a panel to monitor computer usage and activity
      in households. The panel will provide high quality research to computer
      and Internet industry participants (media, advertisers, agencies, hardware
      manufacturers, software developers, etc.). Roll-out of the service is
      planned for 1998. Additional offerings in the interactive/Internet area
      include the Nielsen CommerceNet Internet Demographics Study (a twice per
      year study that profiles the size and audience composition of on-line
      users) and the Home Technology Report, a survey that provides data on
      consumer interest and use of various technologies in the home.
 
DATA COLLECTION
 
    PEOPLE METER.  The heart of the Nielsen Media Research national and Hispanic
services in the United States and all services in Canada is an electronic
measurement system called the Nielsen People Meter. These meters are placed in a
sample of 5,000 households in the U.S., 850 U.S. Hispanic households and over
2,000 households in Canada, randomly selected and recruited by Nielsen Media
Research. A set meter is installed on each television set in a national sample
home along with a device to record who is watching the television. Each member
of the household is assigned a personal viewing button identified by name or
symbol on the people meter that the viewer can use to enter his or her viewing
status. Household members are instructed to record their viewing on a television
set in a household whenever they are watching or listening to that set. Each
button is linked to the age and gender of a person in the household. Additional
buttons on the meter enable visitors to a sample household to record when they
watch television by entering their age and gender and pushing a visitor button.
 
    The Nielsen Media Research metering system stores half minute by half minute
records of television receiver tuning activity and of people meter audience data
entries in sample households. The U.S. tuning records are automatically
transmitted by phone to Nielsen Media Research's central computer facility in
Dunedin, Florida where the data are matched with program line-up information and
processed to create ratings estimates.
 
    SET METER.  In 38 of the largest local markets in the U.S., a set metering
system provides household television ratings information on a daily basis. In
each of these markets, approximately 400-550 households (or approximately 19,000
households across the U.S.) are recruited to participate in a sample distinct
from the national people meter sample. Electronic meters are attached to each
television set in each sample
 
                                       84
<PAGE>
home. Homes recruited for local samples are not equipped with people meter
attachments, so that the information is limited to identification of the program
to which the set is tuned. The metered market samples of television households
are used to obtain audience estimates with measurable reliability of television
programs for stations which originated in or are assigned for reporting purposes
to Nielsen Media Research's Designated Market Areas ("DMAs").
 
    DIARIES.  In addition to set meters, Nielsen Media Research uses diaries in
local markets (over 200 DMAs in the U.S.) to collect viewing data during at
least four designated measurement periods each year. Diary measurement is used
to collect viewing information (both tuning and demographics) from sample homes
in every local television market across the United States in November, February,
May and July (known as "sweeps" months) of each year. The diary provides
audience (both tuning and demographics) data in the smaller non-metered markets
and demographic data for the metered markets. In addition to the four sweeps
months, in some larger markets diaries are used to provide viewer information in
as many as three additional months (October, January, and March). Diaries
returned to Nielsen Media Research are examined and edited using established
procedures. Audience estimates are then computed separately for each quarter
hour of viewing recorded in the diary.
 
INVESTMENTS
 
    Nielsen Media Research maintains an active investment program to enhance
existing services and develop new services in response to the rapidly changing
media marketplace, as well as to develop the technology necessary to succeed in
the emerging television environment. The majority of the investment effort and
spending is dedicated to improving the quality and efficiency of existing
services; realizing the full potential of those services by adding new,
value-added or derivative products, especially new software products; developing
a next-generation data collection capability and infrastructure; and creating
new services and businesses.
 
    Nielsen Media Research's most significant investment initiatives include the
local service diary sample expansion; new client-server based data processing
and delivery software development; the Universal Metering Initiative ("UMI");
and new business development, notably Nielsen Interactive Services and New
Millennium.
 
    In March 1996, Nielsen Media Research announced plans to implement a
significant increase in the size of its diary samples. Beginning in May 1996,
diary samples were increased by 10% and by an additional 5% in October 1996.
During 1997, Nielsen Media Research increased diary samples by an additional 35%
in 88 markets where stations financially supported the increase.
 
    Since 1992, Nielsen Media Research has continued to make significant
investments to transition itself to a new flexible client/server architecture
for data collection, processing and delivery. These investments are designed to
provide Nielsen Media Research with reengineered and more capable data
collection and processing systems, and to provide customers with flexible and
high value Windows-TM--based software products.
 
    As part of its UMI program, Nielsen Media Research is developing a
next-generation metering system, known as the Active/Passive, or "A/P", metering
system, to enable measurement of program viewing in the emerging digital
television environment. This new system uses codes, which are imperceptible to
the viewer, inserted in the audio and/or video portions of programs and
commercials that can be detected by metering equipment installed in the sample
households. The system also has a passive signature-recognition back-up
capability. This encoding approach builds upon Nielsen Media Research's
experience in developing and using its highly successful program video code
technology used in today's analog television environment, which has received
permanent authorization from the Federal Communications Commission (the "FCC").
There can be no assurance, however, that the coding used by the new system will
be adopted by the television industry, be approved by the FCC, or be compatible
with signal compression techniques implemented by the industry in the future.
 
                                       85
<PAGE>
    In December 1997, Nielsen Media Research purchased approximately 5% of the
outstanding shares in I/Pro.
 
    New Millennium is an agency buying system that Nielsen Media Research
believes will be superior in design and concept to any existing or anticipated
competitive product. It is being designed to give advertising agencies the
ability to perform pre-buy analyses, track negotiations and scheduling of ad
time, evaluate overall performance in terms of delivery and cost, and finally,
perform the reconciliation and subsequent accounting functions. By automating
tasks now done manually at agencies, the system may substantially reduce agency
costs. To date, the first of seven planned modules, Spot TV, has been built.
 
    In January 1998, Nielsen Media Research announced the development of a new
metering system to track television viewing within Microsoft Corporation's
Windows 98-TM-. This new technology, developed jointly by Nielsen Media Research
and Microsoft engineers, will be used to capture audience for those sample
households where television programming is viewed using this Microsoft operating
system.
 
COMPETITION
 
    Nielsen Media Research has maintained a strong leadership position in
relation to its competitors. Arbitron, a former competitor, discontinued its
local syndicated broadcast and cable television ratings service as of December
31, 1993.
 
    A television ratings project funded by the CONTAM and designed and operated
by SRI, is operating a 500 household sample in Philadelphia as a national
television ratings laboratory. SRI's Philadelphia sample has yet to provide
program level data, although SRI has recently announced plans to provide program
level data from a subset of the sample in early 1998. Funding has been
contributed primarily by the three major broadcast networks, ABC, CBS, and NBC.
During 1996, ABC, CBS, and NBC together through CONTAM contributed $10 million
(in addition to the $30 million they contributed in 1994) in funding for the
completion of the Philadelphia test. In addition to the other three major
networks, Fox Broadcasting as well as four cable networks, fifteen major
advertising agencies and buying services, one program syndicator and five of the
nation's largest advertisers have agreed to support and participate in the
testing phase. Some of these companies have contributed to the funding of SRI
and SRI is actively seeking financial support from major media companies for a
national ratings service. The Philadelphia sample is viewed by some as a test
market for a national ratings service. In addition, the NBC and CBS broadcast
television networks have asked SRI for a business plan for the creation of a
national measurement system that could provide an alternative to the Nielsen
Television Index service.
 
    On the local level, ADCOM offers individual cable system measurement. It is
currently collecting and issuing local cable measurement data in Jacksonville,
Florida. Arbitron continues to develop its passive people meter technology and
could use this to re-enter the television audience measurement business.
Indirectly, on both a national and local basis, competition stems from other
marketing research services offering product movement and television audience
data and services.
 
    In Canada, BBM, an established media research organization, has joined with
Taylor Nelson/AGB, a U.K.-based media research company, and announced plans to
provide a competing metered service in Vancouver. BBM, alone or with Taylor
Nelson/AGB, could offer other competitive services in Canada.
 
    Monitor-Plus has significant competition from Competitive Media Reports, a
subsidiary of VNU, a Netherlands-based media company, which has long been the
major participant in this market.
 
INTELLECTUAL PROPERTY
 
    Nielsen Media Research owns and controls a number of patents, trade secrets,
confidential information, trademarks, trade names, copyrights and other
intellectual property rights which, in the aggregate, are of material importance
to its business. Management believes that the "Nielsen Media Research" name and
 
                                       86
<PAGE>
related names, marks and logos are of material importance to Nielsen Media
Research. Nielsen Media Research is licensed to use certain technology and other
intellectual property rights owned and controlled by others, and similarly,
other companies are licensed to use certain technology and other intellectual
property rights owned and controlled by Nielsen Media Research.
 
    Pursuant to the Intellectual Property Agreement dated as of October 28, 1996
between Cognizant, D&B and ACNielsen (the "IP Agreement"), Nielsen Media
Research has exclusive and unrestricted rights to the "Nielsen Media Research"
name worldwide; however, Nielsen Media Research's use of the "Nielsen" name,
standing alone and as part of a name describing new products and services to be
offered, is subject to certain limitations. In addition, the IP Agreement
provided for the establishment of a limited liability company jointly owned by
Cognizant and ACNielsen, into which certain trademarks incorporating or relating
to the "Nielsen" name in various countries were assigned. This company is
obligated to license such trademarks on a royalty-free basis to Nielsen Media
Research or ACNielsen for use in a manner consistent with the IP Agreement and
for purposes of conducting their respective businesses, and is responsible for
preserving the quality of those trademarks and minimizing any risk of possible
confusion. Pursuant to the TAM Master Agreement dated as of October 28, 1996
between Cognizant and ACNielsen, Cognizant granted a non-exclusive license to
ACNielsen to use certain trademarks, technology and related intellectual
property rights in the conduct of the television audience measurement business
outside of the United States and Canada for a period of five years. This
agreement does not restrict Nielsen Media Research from doing business outside
the United States and Canada.
 
    The technology and other intellectual property rights licensed by Nielsen
Media Research are of importance to its business, although management of Nielsen
Media Research believes that, with the exception of the trademarks incorporating
or relating to the "Nielsen" name, the business, as a whole, is not dependent
upon any one intellectual property or group of such properties.
 
    The names of Nielsen Media Research's and its subsidiaries' products and
services referred to herein are trademarks, service marks, registered trademarks
or registered service marks owned by or licensed to Nielsen Media Research or
one of its subsidiaries.
 
EMPLOYEES
 
    As of December 31, 1997, Nielsen Media Research had approximately 3,300
full-time equivalent employees in the United States and Canada. Of these,
approximately 3,200 are located in the United States, and none of these are
represented by labor unions. Nielsen Media Research believes that, generally,
relations with its employees are good and have been maintained in a normal and
customary manner.
 
PROPERTIES
 
    Nielsen Media Research's real property is geographically distributed to meet
sales and operating requirements. Nielsen Media Research owns its major
processing facility in Dunedin, Florida. Its other properties are leased from
third parties. Nielsen Media Research's properties are generally considered to
be both suitable and adequate to meet current operating requirements and
virtually all space is being utilized.
 
STRATEGY
 
    Nielsen Media Research's strategic goal is to be the acknowledged worldwide
leader in satisfying the media industry's needs for high quality information
which defines the value of media, and services which enable its customers and
the marketplace to operate more effectively.
 
    Nielsen Media Research's strategy has two components: first, to realize the
potential of its existing businesses, both national and local; and second, to
optimize its market strengths and capabilities into realizing new opportunities
in adjacent markets and new businesses.
 
                                       87
<PAGE>
    - Nielsen Media Research intends to realize the potential of its core
      businesses by enhancing quality in its operations, enhancing productivity,
      anticipating environmental and marketplace changes and competitive
      threats, responding with fast moving and flexible capabilities and
      decision support solutions, adding derivative products and services, and
      providing value-added solutions. Central to this strategy are its
      investments in data collection and processing technology, as well as in
      data and sample quality.
 
    - Nielsen Media Research intends to optimize its capabilities and
      infrastructure into new high-potential opportunities by providing services
      that not only enable its customers to make better decisions but allow them
      to better anticipate their own futures. Nielsen Media Research's most
      significant initiatives in this area include Monitor-Plus, Nielsen
      Interactive Services and New Millennium.
 
LEGAL PROCEEDINGS
 
    Nielsen Media Research and its subsidiaries are involved in legal
proceedings and litigation arising in the ordinary course of business. In the
opinion of management, the outcome of all current proceedings, claims and
litigation, if decided adversely, could have a material effect on quarterly or
annual operating results or cash flows when resolved in a future period.
However, in the opinion of management, these matters will not materially affect
Nielsen Media Research's consolidated financial position.
 
    In addition, on July 29, 1996, IRI filed a complaint in the United States
District Court for the Southern District of New York, naming as defendants D&B,
A.C. Nielsen Company and IMS.
 
    The complaint, as subsequently amended, alleges various violations of the
United States antitrust laws, including alleged violations of Sections 1 and 2
of the Sherman Act. The complaint also alleges a claim of tortious interference
with a contract and a claim of tortious interference with a prospective business
relationship. These latter claims relate to the acquisition by defendants of
SRG. IRI alleges that SRG violated an alleged agreement with IRI when it agreed
to be acquired by defendants and that the defendants induced SRG to breach that
agreement.
 
    IRI's complaint alleges damages in excess of $350 million, which amount IRI
has asked to be trebled under the antitrust laws. IRI also seeks punitive
damages in an unspecified amount. Defendants have filed answers denying the
material allegations in IRI's complaint and amended complaint, and A.C. Nielsen
Company has filed a counterclaim alleging that IRI has made false and misleading
statements about its services and commercial activities.
 
    In connection with the 1996 Distribution, with respect to the IRI Action,
D&B, ACNielsen (the parent company of A.C. Nielsen Company) and Cognizant
entered into the Indemnity and Joint Defense Agreement pursuant to which they
agreed (i) to certain arrangements allocating IRI Liabilities that may arise out
of or in connection with the IRI Action, and (ii) to conduct a joint defense of
such action. In particular, the Indemnity and Joint Defense Agreement provides
that ACNielsen will assume exclusive liability for IRI Liabilities up to ACN
Maximum Amount, and that Cognizant and D&B will share liability equally for any
amounts in excess of the ACN Maximum Amount. The ACN Maximum Amount will be
determined by an investment banking firm as the maximum amount which ACNielsen
is able to pay after giving effect to (i) any plan submitted by such investment
bank which is designed to maximize the claims paying ability to ACNielsen
without impairing the investment banking firm's ability to deliver a viability
opinion (but which will not require any action requiring shareholder approval),
and (ii) payment of related fees and expenses. For these purposes, financial
viability means the ability of ACNielsen, after giving effect to such plan, the
payment of related fees and expenses and the payment of the ACN Maximum Amount,
to pay its debts as they become due and to finance the current and anticipated
operating and capital requirements of its business, as reconstituted by such
plan, for two years from the date any such plan is expected to be implemented.
 
                                       88
<PAGE>
    Under the terms of the 1996 Distribution Agreement, as a condition to the
Distribution, IMS HEALTH and Nielsen Media Research are required to undertake to
be jointly and severally liable to D&B and ACNielsen for Cognizant's obligations
under the 1996 Distribution Agreement. However, pursuant to the Distribution
Agreement, IMS HEALTH and Nielsen Media Research have agreed that, as between
themselves, IMS HEALTH will assume 75%, and Nielsen Media Research will assume
25%, of any payments to be made in respect of the IRI Action under the Indemnity
and Joint Defense Agreement or otherwise, including any legal fees and expenses
related thereto incurred in 1999 or thereafter. IMS HEALTH has agreed to be
fully responsible for any legal fees and expenses incurred during 1998. Nielsen
Media Research's aggregate liability to IMS HEALTH for payments in respect of
the IRI Action and certain other contingent liabilities shall not exceed $125
million.
 
    Management of Nielsen Media Research is unable to predict at this time the
final outcome of this matter or whether the resolution of this matter could
materially affect Nielsen Media Research's results of operations, cash flows or
financial position.
 
                                       89
<PAGE>
          NIELSEN MEDIA RESEARCH MANAGEMENT AND EXECUTIVE COMPENSATION
 
    William G. Jacobi is currently Chairman of Nielsen Media Research and will
be Chairman of Nielsen Media Research after the Distribution. John A. Dimling is
currently President and Chief Operating Officer of Nielsen Media Research and
will be President and Chief Executive Officer of Nielsen Media Research after
the Distribution. The Board of Directors of Nielsen Media Research will be
composed of certain persons who are currently directors of Cognizant and certain
persons who are not currently directors of Cognizant. In addition to Mr.
Dimling, the other executive officers of Nielsen Media Research will be drawn
primarily from the current management of Nielsen Media Research.
 
NIELSEN MEDIA RESEARCH BOARD OF DIRECTORS
 
    Immediately after the Distribution, Nielsen Media Research expects to have a
Board of Directors composed of     directors.
 
    The following table sets forth the names, in alphabetical order, and
information as to the persons who are expected to serve as directors of Nielsen
Media Research following the Distribution, including information as to service
with Cognizant, if applicable.
<TABLE>
<CAPTION>
                                                  DIRECTOR OF
                                POSITIONS WITH     COGNIZANT            PRINCIPAL OCCUPATION DURING
NAME                              COGNIZANT          SINCE                    LAST FIVE YEARS                   AGE*
- ----------------------------  ------------------  ------------  --------------------------------------------  ---------
<S>                           <C>                 <C>           <C>                                           <C>
 
John A. Dimling.............  President and            --       President and Chief Operating Officer,               59
                              Chief Operating                   Nielsen Media Research,     to present
                              Officer of Nielsen
                              Media Research
 
William G. Jacobi...........  Chairman of              --       Chairman, Nielsen Media Research,     to             54
                              Nielsen Media                     present; Executive Vice President,
                              Research                          Cognizant, 9/96 to 12/97; Senior Vice
                                                                President, The Dun & Bradstreet Corporation,
                                                                Wilton, CT (information services), 7/93 to
                                                                10/96; President and Chief Operating
                                                                Officer, Nielsen Media Research, 1/91 to
                                                                    .
 
M. Bernard Puckett            Director                1996      Private Investor, 1/96 to present; President         53
                                                                and Chief Executive Officer, Mobile
                                                                Telecommunication Technologies Corp.;
                                                                Jackson, MS (telecommunications), 5/95 to
                                                                1/96; President, Chief Operating Officer,
                                                                1/94 to 5/95; Senior Vice President-
                                                                Corporate Strategy and Development,
                                                                International Business Machines Corporation,
                                                                Armonk, NY (computers), 7/93 to 12/93;
                                                                General Manager of Applications Solutions,
                                                                1/91 to 7/93.
 
Robert E. Weissman            Chairman and Chief      1996      Chairman and Chief Executive Officer,                57
                              Executive Officer,                Cognizant, 9/96 to present; Chairman and
                              Director                          Chief Executive Officer, The Dun &
                                                                Bradstreet Corporation, Wilton, CT
                                                                (information services), 4/95 to 10/96;
                                                                President and Chief Executive Officer, 1/94
                                                                to 3/95; President and Chief Operating
                                                                Officer, 1/85 to 12/93.
 
<CAPTION>
                                    OTHER
NAME                            DIRECTORSHIPS
- ----------------------------  ------------------
<S>                           <C>
John A. Dimling.............
William G. Jacobi...........
M. Bernard Puckett            P-Com, Inc.; R.R.
                              Donnelley & Sons
                              Company; Oacis
                              Healthcare
                              Holdings Corp.
Robert E. Weissman            State Street
                              Boston
                              Corporation;
                              Gartner Group,
                              Inc.
</TABLE>
 
- ------------------------
 
*   As of March 13, 1998
 
DIRECTOR'S COMPENSATION
 
    Under the director compensation program of Nielsen Media Research, each
non-employee director will receive a 1998 retainer of $         ; thereafter,
the retainer will be paid at an annual rate of
 
                                       90
<PAGE>
$         . Each non-employee director who is the Chairman of a Committee of the
Board of Directors will be paid an additional retainer of $         for 1998 and
annually thereafter. A fee of $         will be paid to each non-employee
director for every Board or Committee meeting attended. Directors who are
employed by Nielsen Media Research will receive no retainers or meeting fees.
 
    Each non-employee director may elect to have all or a specified part of the
retainer and fees deferred until he or she ceases to be a director. Deferred
amounts may be credited to the account of the directors as deferred cash, which
bears interest at prescribed rates, or as deferred share units in an amount
equal to the amount of deferred compensation divided by the Fair Market Value
(as defined below) of a share of Nielsen Media Research Common Stock on the date
the compensation would otherwise have been paid. Deferred share units are
credited with dividend equivalents. Fair Market Value is the average of the high
and low trading prices of the Nielsen Media Research Common Stock on the date of
determination. Deferred amounts and accrued interest and dividend equivalents
are paid in the form of cash or stock, as appropriate, on the first business day
of the calendar year following the date of the director's termination of service
on the Board of Directors.
 
COMMITTEES OF THE NIELSEN MEDIA RESEARCH BOARD OF DIRECTORS
 
    Nielsen Media Research's Board of Directors has established Audit, Executive
and Compensation and Benefits Committees and designated specific functions and
areas of oversight as to such committees. However, no final determination has
yet been made as to the memberships of such standing committees after the
Distribution.
 
NIELSEN MEDIA RESEARCH EXECUTIVE OFFICERS
 
    Listed below is certain information as to the executive officers who have
been selected to serve after the Distribution.
 
<TABLE>
<CAPTION>
NAME, POSITION WITH NIELSEN MEDIA RESEARCH AND AGE*                          BIOGRAPHICAL DATA
- --------------------------------------------------------  --------------------------------------------------------
<S>                                                       <C>
 
John A. Dimling, 59.....................................  See information under "Nielsen Media Research Board of
President and Chief Executive Officer                       Directors".
 
Thomas W. Young, 59.....................................  Senior Vice President and Controller, D&B, 4/92 to
Executive Vice President and Chief Financial Officer        10/96.
</TABLE>
 
- ------------------------
 
*   As of March 13, 1998
 
COMPENSATION OF NIELSEN MEDIA RESEARCH EXECUTIVE OFFICERS
 
    The following table discloses the compensation paid by Cognizant for
services rendered to Cognizant in 1997 of Nielsen Media Research's Chief
Executive Officer and to each of the persons who are currently anticipated to be
one of the four other most highly compensated executive officers of Nielsen
Media Research following the Distribution. During the period presented, the
individuals were compensated in accordance with Cognizant's plans and policies.
 
                                       91
<PAGE>
                           SUMMARY COMPENSATION TABLE
                          FOR SERVICES WITH COGNIZANT
<TABLE>
<CAPTION>
                                                                                                LONG-TERM COMPENSATION
                                                                                         -------------------------------------
                                                                                                  AWARDS             PAYOUTS
                                                                                         ------------------------  -----------
                                                         ANNUAL COMPENSATION                              (G)
                                              -----------------------------------------      (F)      SECURITIES       (H)
                                                                                         RESTRICTED   UNDERLYING    LONG-TERM
               (A)                               (C)        (D)             (E)             STOCK      OPTIONS/     INCENTIVE
NAME AND PRINCIPAL POSITION WITH      (B)      SALARY     BONUS(1)      OTHER ANNUAL     AWARD(S)(3)    SARS(4)    PAYOUTS(5)
NIELSEN MEDIA RESEARCH               YEAR        ($)        ($)       COMPENSATION(2)        ($)          (#)          ($)
- ---------------------------------  ---------  ---------  ----------  ------------------  -----------  -----------  -----------
<S>                                <C>        <C>        <C>         <C>                 <C>          <C>          <C>
 
John A. Dimling..................
President and Chief Executive
Officer
 
Thomas W. Young..................
Executive Vice President and
Chief Financial Officer
 
<CAPTION>
                                         (I)
               (A)                    ALL OTHER
NAME AND PRINCIPAL POSITION WITH   COMPENSATION(6)
NIELSEN MEDIA RESEARCH                   ($)
- ---------------------------------  ----------------
<S>                                <C>
John A. Dimling..................
President and Chief Executive
Officer
Thomas W. Young..................
Executive Vice President and
Chief Financial Officer
</TABLE>
 
OPTION GRANTS ON COGNIZANT COMMON STOCK TO NIELSEN MEDIA RESEARCH EXECUTIVES
  IN LAST FISCAL YEAR
 
    The following table provides information on fiscal year 1997 grants of
options to the named Nielsen Media Research executives to purchase shares of
Cognizant Common Stock. Options to acquire Cognizant Common Stock become options
to purchase Nielsen Media Research Common Stock. See "Relationship Between IMS
HEALTH and Nielsen Media Research After the Distribution--Employee Benefits
Agreement".
 
                  OPTION GRANTS/SAR GRANTS IN LAST FISCAL YEAR
                       TO PURCHASE COGNIZANT COMMON STOCK
 
<TABLE>
<CAPTION>
                                               (B)           (C)
                                            NUMBER OF     % OF TOTAL
                                           SECURITIES      OPTIONS/       (D)                          (F)
                                           UNDERLYING        SARS       EXERCISE                   GRANT DATE
                                          OPTIONS/SARS    GRANTED TO       OR          (E)           PRESENT
                  (A)                      GRANTED(1)    EMPLOYEES IN  BASE PRICE   EXPIRATION      VALUE(2)
NAME                                           (#)       FISCAL YEAR   ($/SHARE)       DATE            ($)
- ----------------------------------------  -------------  ------------  ----------  ------------  ---------------
<S>                                       <C>            <C>           <C>         <C>           <C>
 
John A. Dimling.........................
 
Thomas W. Young.........................
</TABLE>
 
AGGREGATE COGNIZANT OPTION EXERCISES IN THE LAST FISCAL YEAR AND FISCAL YEAR-END
  COGNIZANT OPTION VALUES
 
    The following table provides information on option exercises in 1997 by the
named executives of Nielsen Media Research and the value of each such
executive's unexercised options to acquire Cognizant Common Stock at December
31, 1997. See also, "Relationship Between IMS HEALTH and Nielsen Media Research
After the Distribution--Employee Benefits Agreement".
 
                                       92
<PAGE>
               AGGREGATE OPTION/SAR EXERCISES IN LAST FISCAL YEAR
                     AND FISCAL YEAR-END OPTION/SAR VALUES
 
<TABLE>
<CAPTION>
                                                                       (D)                        (E)
                                                              NUMBER OF SECURITIES       VALUE OF UNEXERCISED,
                                                             UNDERLYING UNEXERCISED          IN-THE-MONEY
                                   (B)            (C)       COGNIZANT OPTIONS/SARS AT  COGNIZANT OPTIONS/SARS AT
                             SHARES ACQUIRED     VALUE        FISCAL YEAR-END(1)(#)      FISCAL YEAR-END(2)($)
            (A)                ON EXERCISE      REALIZED    -------------------------  -------------------------
NAME                               (#)            ($)       EXERCISABLE UNEXERCISABLE  EXERCISABLE UNEXERCISABLE
- ---------------------------  ---------------  ------------  ----------  -------------  ----------  -------------
<S>                          <C>              <C>           <C>         <C>            <C>         <C>
 
John A. Dimling............
 
Thomas W. Young............
</TABLE>
 
- ------------------------
 
(1) No SARs were outstanding at December 31, 1997.
 
(2) The values shown equal the difference between the exercise price of
    unexercised in-the-money options and the fair market value of the underlying
    Cognizant Common Stock at December 31, 1997. Options are in-the-money if the
    fair market value of the Cognizant Common Stock exceeds the exercise price
    of the option.
 
COGNIZANT RETIREMENT BENEFITS
 
    Retirement benefits for the named Nielsen Media Research executive officers
are determined under the Cognizant Retirement Plan and the Cognizant Retirement
Excess Plan. Under these plans, Cognizant contributes 6% of the participant's
compensation monthly to the participant's cash balance in the plan. The cash
balance earns monthly investment credits based on the yield on 30-year Treasury
bonds from time to time. These plans also include a minimum monthly benefit for
certain employees who had attained age 50 and had earned 10 years of service as
of October 31, 1996, including             ,             and             . The
minimum benefit is equal to the excess of (i) 1.7% of final average compensation
multiplied by years of credited service not in excess of 25, plus 1.0% of
average final compensation multiplied by years of credited service in excess of
25, over (ii) 1.7% of the primary Social Security insurance benefits multiplied
by years of credited service not in excess of 25, plus 0.5% of the primary
Social Security insurance benefits multiplied by years of credited service in
excess of 25. The estimated annual benefits upon retirement at age 65 for
            ,             and             are          ,          and          ,
respectively, based upon their respective credited service to date for these
plans of       ,       and       years. This amount includes benefits payable
under predecessor plans of D&B which would be deducted from the amounts payable
under these plans. In 1997, Mr. Young was not eligible to participate in the
Cognizant Retirement Plan and the Cognizant Retirement Excess Plan.
 
                                       93
<PAGE>
                  NIELSEN MEDIA RESEARCH SECURITY OWNERSHIP BY
                    CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
    After the Distribution, shares of Cognizant Common Stock will be shares of
Nielsen Media Research Common Stock. The following table sets forth the number
of shares of Cognizant Common Stock, the only outstanding equity security (other
than stock options) or voting security of Cognizant, beneficially owned by each
of the directors, each of the executive officers named in the Summary
Compensation Table above, and all persons expected to be directors and executive
officers of Cognizant after the Distribution as a group, at December 31, 1997.
The table also sets forth the name and address of the only persons known to
Cognizant to be the beneficial owners of more than 5% of the outstanding
Cognizant Common Stock (the "5% Owners") and the number of shares so owned, to
Cognizant's knowledge, on December 31, 1997. This information is based upon
information furnished by each such person (or, in the case of the 5% Owners,
based upon a Schedule 13G filed by the 5% Owners with the SEC). Please note that
in certain cases shares required under rules of the SEC to be shown as
beneficially owned are shares as to which the indicated person holds only rights
to acquire within 60 days through exercise of stock options. Unless otherwise
stated, the indicated persons have sole voting and investment power over the
shares listed. All persons expected to be directors and executive officers of
Nielsen Media Research after the Distribution as a group owned less than one
percent of the Cognizant Common Stock on December 31, 1997 and are expected to
own less than one percent of the Nielsen Media Research Common Stock as of the
Distribution Date. Percentages are based upon the number of shares of Cognizant
Common Stock outstanding at December 31, 1997 plus, where applicable, the number
of shares that the indicated person or group had a right to acquire within 60
days of such date. The mailing address for each of the Nielsen Media Research
directors and executive officers listed herein is 299 Park Avenue, New York, New
York 10171.
 
<TABLE>
<CAPTION>
                                                                                              NUMBER OF SHARES
                                                                                             SUBJECT TO OPTIONS
                                                                      NUMBER OF SHARES     EXERCISABLE WITHIN 60
NAME AND ADDRESS OF BENEFICIAL OWNER                                 BENEFICIALLY OWNED             DAYS
- ------------------------------------------------------------------  --------------------  ------------------------
<S>                                                                 <C>                   <C>
 
John A. Dimling...................................................
 
William G. Jacobi.................................................             6,742                149,266
 
M. Bernard Puckett................................................             4,498(1)               1,166
 
Robert E. Weissman................................................           122,964                635,621
 
Thomas W. Young...................................................
 
FMR Corporation...................................................        18,355,768(2)(3)
  82 Devonshire Steet
  Boston, MA 02109
</TABLE>
 
- ------------------------
 
(1) Includes 898 shares of restricted stock granted under the Non-Employee
    Directors' Stock Incentive Plan, which shares are scheduled to vest on
    November 15, 2001.
 
(2) Represents 11.32% of the total outstanding Cognizant Common Stock on
    December 31, 1997.
 
(3) FMR Corporation ("FMR Corp.") and its wholly owned subsidiaries, Fidelity
    Management & Research Company ("Fidelity") and Fidelity Management Trust
    Company ("FMTC"), jointly filed a Schedule 13G with the SEC on February 14,
    1998. This Schedule 13G shows that Fidelity, a registered investment
    adviser, beneficially owned at December 31, 1997, 17,116,190 shares of
    Cognizant Common Stock. Edward C. Johnson, 3rd, Chairman of FMR Corp., FMR
    Corp. and the registered investment companies advised by Fidelity each has
    sole dispositive power (but no voting power) over such shares. Voting power
    with respect to such shares resides with the respective Boards of Trustees
    of each of the Fidelity Funds. Mr. Johnson and FMR Corp. each has sole
    dispositive power over 1,239,578 shares of Cognizant Common Stock held by
    FMTC, a bank as defined under the Securities Act which serves as investment
    manager for institutional accounts, sole voting power over 749,378 of such
    shares and no voting power over 490,200 of such shares.
 
                                       94
<PAGE>
              DESCRIPTION OF NIELSEN MEDIA RESEARCH CAPITAL STOCK
 
    Since after the Distribution the capital stock of Cognizant held by
Cognizant stockholders will represent a continuing ownership interest in the
Nielsen Media Research Business, the following summary of Cognizant's current
capital stock structure describes Nielsen Media Research's capital structure
from and after the Distribution.
 
AUTHORIZED CAPITAL STOCK
 
    The total number of shares of all classes of stock that Nielsen Media
Research has authority to issue under its Restated Certificate of Incorporation
is 420,000,000 shares of which 400,000,000 shares represent shares of Nielsen
Media Research Common Stock, 10,000,000 shares represent shares of Preferred
Stock (the "Nielsen Media Research Preferred Stock") and 10,000,000 shares
represent shares of Series Common Stock (the "Nielsen Media Research Series
Common Stock").
 
NIELSEN MEDIA RESEARCH COMMON STOCK
 
    Subject to any preferential rights of any Nielsen Media Research Preferred
Stock or Nielsen Media Research Series Common Stock created by the Board of
Directors of Nielsen Media Research, each outstanding share of Nielsen Media
Research Common Stock will be entitled to such dividends, if any, as may be
declared from time to time by the Board of Directors of Nielsen Media Research.
See "Dividend Policies--Nielsen Media Research". Each outstanding share is
entitled to one vote on all matters submitted to a vote of stockholders. In the
event of liquidation, dissolution or winding up of Nielsen Media Research,
holders of Nielsen Media Research Common Stock are entitled to receive on a pro
rata basis any assets remaining after provision for payment of creditors and
after payment of any liquidation preferences to holders of Nielsen Media
Research Preferred Stock and Nielsen Media Research Series Common Stock.
 
NIELSEN MEDIA RESEARCH PREFERRED STOCK AND NIELSEN MEDIA RESEARCH SERIES COMMON
  STOCK
 
    Each of the authorized Preferred Stock and the authorized Series Common
Stock of Nielsen Media Research is available for issuance from time to time in
one or more series at the discretion of the Nielsen Media Research Board of
Directors without stockholder approval. The Nielsen Media Research Board of
Directors has the authority to prescribe for each series of Nielsen Media
Research Preferred Stock or Nielsen Media Research Series Common Stock it
establishes the number of shares in that series, the voting rights (if any) to
which such shares in that series are entitled, the consideration for such shares
in that series and the designation, powers, preference and relative,
participating, optional or other special rights, and such qualifications,
limitations or restrictions of the shares in that series. Depending upon the
rights of such Preferred Stock or Series Common Stock, as applicable, the
issuance of Nielsen Media Research Preferred Stock or Nielsen Media Research
Series Common Stock, as applicable, could have an adverse effect on holders of
Nielsen Media Research Common Stock by delaying or preventing a change in
control of Nielsen Media Research, making removal of the present management of
Nielsen Media Research more difficult or resulting in restrictions upon the
payment of dividends and other distributions to the holders of Nielsen Media
Research Common Stock.
 
AUTHORIZED BUT UNISSUED CAPITAL STOCK
 
    Delaware law does not require stockholder approval for any issuance of
authorized shares. However, the listing requirements of the NYSE, which would
apply so long as the Nielsen Media Research Common Stock remained listed on the
NYSE, require stockholder approval of certain issuances equal to or exceeding
20% of the then outstanding voting power or then outstanding number of shares of
Nielsen Media Research Common Stock. These additional shares may be used for a
variety of corporate purposes, including future public offerings to raise
additional capital or to facilitate corporate acquisitions. Under
 
                                       95
<PAGE>
terms of the agreements relating to the Acquisitions and subject to Walsh and
PMSI shareholder approval, Walsh shareholders will receive .3041 shares of
Cognizant Common Stock per Walsh share outstanding and PMSI shareholders will
receive .2800 shares of Cognizant Common Stock per PMSI share outstanding. The
number of shares of Cognizant Common Stock to be issued in connection with each
of the Acquisitions is subject to a collar adjustment based on the price of
Cognizant Common Stock during a period prior to the closing of the Acquisitions.
In the event the Acquisitions are not completed prior to the Record Date, Walsh
and PMSI shareholders will receive, in lieu of Cognizant Common Stock, IMS
HEALTH Common Stock pursuant to a formula designed to recalibrate the collar
computations based on the relative value of IMS HEALTH to the total value of IMS
HEALTH and Nielsen Media Research following the Distribution. Cognizant expects
to issue approximately 6.7 million shares from treasury stock to consummate the
Acquisitions. Nielsen Media Research currently does not have any other plans to
issue additional shares of Nielsen Media Research Common Stock, Nielsen Media
Research Preferred Stock or Nielsen Media Research Series Common Stock other
than in connection with employee compensation plans.
 
    One of the effects of the existence of unissued and unreserved Nielsen Media
Research Common Stock, Nielsen Media Research Preferred Stock and Nielsen Media
Research Series Common Stock may be to enable the Board of Directors of Nielsen
Media Research to issue shares to persons friendly to current management, which
issuance could render more difficult or discourage an attempt to obtain control
of Nielsen Media Research by means of a merger, tender offer, proxy contest or
otherwise, and thereby protect the continuity of Nielsen Media Research's
management and possibly deprive the stockholders of opportunities to sell their
shares of Nielsen Media Research Common Stock at prices higher than prevailing
market prices. Such additional shares also could be used to dilute the stock
ownership of persons seeking to obtain control of Nielsen Media Research
pursuant to the operation of the Nielsen Media Research Rights Plan, which is
discussed below.
 
NIELSEN MEDIA RESEARCH RIGHTS PLAN
 
    Nielsen Media Research plans to continue the Cognizant Rights Plan pursuant
to which a dividend of one preferred share purchase right (a "Nielsen Media
Research Right") for each outstanding share of Nielsen Media Research Common
Stock was declared. Each Nielsen Media Research Right entitles the registered
holder to purchase from Nielsen Media Research one one-thousandth of a share of
Series A Junior Participating Nielsen Media Research Preferred Stock, par value
$0.01 per share (the "Nielsen Media Research Participating Preferred Stock"), of
Nielsen Media Research at a price of $210 per one one-thousandth of a share of
Nielsen Media Research Participating Preferred Stock (as the same may be
adjusted, hereinafter referred to as the "Nielsen Media Research Participating
Preferred Stock Purchase Price"), subject to adjustment. The description and
terms of the Nielsen Media Research Rights are set forth in a Rights Agreement
dated as of October 15, 1996, as the same may be amended from time to time (the
"Nielsen Media Research Rights Agreement"), between Cognizant as predecessor to
Nielsen Media Research and First Chicago Trust Company of New York, as the
Nielsen Media Research Rights Agent (the "Nielsen Media Research Rights Agent").
 
    Until the earlier to occur of (i) 10 days following a public announcement
that a person or group of affiliated or associated persons (with certain
exceptions, hereinafter referred to in this description of Nielsen Media
Research Rights, a "Nielsen Media Research Acquiring Person") have acquired
beneficial ownership of 15% or more of the outstanding shares of Nielsen Media
Research Common Stock or (ii) 10 business days (or such later date as may be
determined by action of the Board of Directors prior to such time as any person
or group of affiliated persons becomes a Nielsen Media Research Acquiring
Person) following the commencement of, or announcement of an intention to make,
a tender offer or exchange offer the consummation of which would result in the
beneficial ownership by a person or group of 15% or more of the outstanding
shares of Nielsen Media Research Common Stock (the earlier of such dates
hereinafter referred to in this description of Nielsen Media Research Rights as
the "Nielsen Media Research Rights Distribution Date"), the Nielsen Media
Research Rights will be evidenced by the certificates representing Nielsen Media
Research Common Stock.
 
                                       96
<PAGE>
    The Nielsen Media Research Rights Agreement provides that, until the Nielsen
Media Research Rights Distribution Date (or earlier redemption or expiration of
the Nielsen Media Research Rights), the Nielsen Media Research Rights will be
transferred with and only with the Nielsen Media Research Common Stock. Until
the Nielsen Media Research Rights Distribution Date (or earlier redemption or
expiration of the Nielsen Media Research Rights), Nielsen Media Research Common
Stock certificates will contain a notation incorporating the Nielsen Media
Research Rights Agreement by reference. Until the Nielsen Media Research Rights
Distribution Date (or earlier redemption or expiration of the Nielsen Media
Research Rights), the surrender for transfer of any certificates for shares of
Nielsen Media Research Common Stock will also constitute the transfer to the
Nielsen Media Research Rights associated with the shares of Nielsen Media
Research Common Stock represented by such certificate. As soon as practicable
following the Nielsen Media Research Rights Distribution Date, separate
certificates evidencing the Nielsen Media Research Rights ("Nielsen Media
Research Rights Certificates") will be mailed to holders of record of the
Nielsen Media Research Common Stock as of the close of business on the Nielsen
Media Research Rights Distribution Date and such separate Nielsen Media Research
Rights Certificates alone will evidence the Nielsen Media Research Rights.
 
    The Nielsen Media Research Rights will expire on October 23, 2006
(hereinafter referred to in this description of Nielsen Media Research Rights as
the "Nielsen Media Research Final Expiration Date"), unless the Nielsen Media
Research Final Expiration Date is advanced or extended or unless the Nielsen
Media Research Rights are earlier redeemed or exchanged by Nielsen Media
Research, in each case as described below.
 
    The Nielsen Media Research Participating Preferred Stock Purchase Price
payable, and the number of shares of Nielsen Media Research Participating
Preferred Stock or other securities or property issuable, upon exercise of the
Nielsen Media Research Rights are subject to adjustment from time to time to
prevent dilution (i) in the event of a stock dividend on, or a subdivision,
combination or reclassification of, the Nielsen Media Research Participating
Preferred Stock, (ii) upon the grant to holders of the Nielsen Media Research
Participating Preferred Stock of certain rights or warrants to subscribe for or
purchase Nielsen Media Research Participating Preferred Stock at a price, or
securities convertible into Nielsen Media Research Participating Preferred Stock
with a conversion price, less than the then-current market price of the Nielsen
Media Research Participating Preferred Stock or (iii) upon the distribution to
holders of the Nielsen Media Research Participating Preferred Stock of evidences
of indebtedness or assets (excluding regular periodic cash dividends or
dividends payable in Nielsen Media Research Participating Preferred Stock) or of
subscription rights or warrants (other than those referred to above).
 
    The Nielsen Media Research Rights are also subject to adjustment in the
event of a stock dividend on the Nielsen Media Research Common Stock payable in
shares of Nielsen Media Research Common Stock or subdivisions, consolidations or
combinations of the Nielsen Media Research Common Stock occurring, in any such
case, prior to the Nielsen Media Research Rights Distribution Date.
 
    Shares of Nielsen Media Research Participating Preferred Stock purchasable
upon exercise of the Nielsen Media Research Rights will not be redeemable. Each
share of Nielsen Media Research Participating Preferred Stock will be entitled,
when, as and if declared, to a minimum preferential quarterly dividend payment
of $10 per share but will be entitled to an aggregate dividend of 1,000 times
the dividend declared per share of Nielsen Media Research Common Stock. In the
event of liquidation, dissolution or winding up of Nielsen Media Research, the
holders of the Nielsen Media Research Participating Preferred Stock will be
entitled to a minimum preferential liquidation payment of $100 per share (plus
any accrued but unpaid dividends) but will be entitled to an aggregate payment
of 1,000 times the payment made per share of Nielsen Media Research Common
Stock. Each share of Nielsen Media Research Participating Preferred Stock will
have 1,000 votes, voting together with the Nielsen Media Research Common Stock.
Finally, in the event of any merger, consolidation or other transaction in which
shares of Nielsen Media Research Common Stock are converted or exchanged, each
share of Nielsen Media Research Participating Preferred
 
                                       97
<PAGE>
Stock will be entitled to receive 1,000 times the amount received per share of
Nielsen Media Research Common Stock. These rights are protected by customary
antidilution provisions.
 
    Because of the nature of the Nielsen Media Research Participating Preferred
Stock's dividend, liquidation and voting rights, the value of the one
one-thousandth interest in a share of Nielsen Media Research Participating
Preferred Stock purchasable upon exercise of each Nielsen Media Research Right
should approximate the value of one share of Nielsen Media Research Common
Stock.
 
    In the event that any person or group of affiliated or associated persons
becomes a Nielsen Media Research Acquiring Person, each holder of a Nielsen
Media Research Right, other than Nielsen Media Research Rights beneficially
owned by the Nielsen Media Research Acquiring Person (which will thereupon
become void), will thereafter have the right to receive upon exercise of a
Nielsen Media Research Right and payment of the Nielsen Media Research
Participating Preferred Stock Purchase Price, that number of shares of Nielsen
Media Research Common Stock having a market value of two times the Nielsen Media
Research Participating Preferred Stock Purchase Price.
 
    In the event that, after a person or group has become a Nielsen Media
Research Acquiring Person, Nielsen Media Research is acquired in a merger or
other business combination transaction or 50% or more of its consolidated assets
or earning power are sold, proper provision will be made so that each holder of
a Nielsen Media Research Right (other than Nielsen Media Research Rights
beneficially owned by a Nielsen Media Research Acquiring Person which will have
become void) will thereafter have the right to receive, upon the exercise
thereof, that number of shares of common stock of the person with whom Nielsen
Media Research has engaged in the foregoing transaction (or its parent), which
number of shares at the time of such transaction will have a market value of two
times the Nielsen Media Research Participating Preferred Stock Purchase Price.
 
    At any time after any person or group becomes a Nielsen Media Research
Acquiring Person and prior to the acquisition by such person or group of 50% or
more of the outstanding shares of Nielsen Media Research Common Stock or the
occurrence of an event described in the prior paragraph, the Board of Directors
of Nielsen Media Research may exchange the Nielsen Media Research Rights (other
than Nielsen Media Research Rights owned by such person or group which will have
become void), in whole or in part, at an exchange ratio of one share of Nielsen
Media Research Common Stock, or a fractional share of Nielsen Media Research
Participating Preferred Stock of equivalent value (or of a share of a class or
series of Nielsen Media Research's Preferred Stock having similar rights,
preferences and privileges), per Nielsen Media Research Right (subject to
adjustment).
 
    With certain exceptions, no adjustment in the Nielsen Media Research
Participating Preferred Stock Purchase Price will be required until cumulative
adjustments require an adjustment of at least 1% in such Nielsen Media Research
Participating Preferred Stock Purchase Price. No fractional shares of Nielsen
Media Research Participating Preferred Stock will be issued (other than
fractions which are integral multiples of one one-thousandth of a share of
Nielsen Media Research Participating Preferred Stock, which may, at the election
of Nielsen Media Research, be evidenced by depositary receipts) and in lieu
thereof, an adjustment in cash will be made based on the market price of the
Nielsen Media Research Participating Preferred Stock on the last trading period
to the date of exercise.
 
    At any time prior to the time a Nielsen Media Research Acquiring Person
becomes such, the Board of Directors of Nielsen Media Research may redeem the
Nielsen Media Research Rights in whole, but not in part, at a price of $0.01 per
Nielsen Media Research Right (hereinafter referred to in this description of
Nielsen Media Research Rights as the "Nielsen Media Research Right Redemption
Price"). The redemption of the Nielsen Media Research Rights may be made
effective at such time, on such basis and with such conditions as the Board of
Directors in its sole discretion may establish. Immediately upon any redemption
of the Nielsen Media Research Rights, the right to exercise the Nielsen Media
Research Rights will terminate and the only right of the holders of Nielsen
Media Research Rights will be to receive the Nielsen Media Research Right
Redemption Price.
 
                                       98
<PAGE>
    For so long as the Nielsen Media Research Rights are then redeemable,
Nielsen Media Research may, except with respect to the Nielsen Media Research
Right Redemption Price, amend the Nielsen Media Research Rights in any manner.
After the Nielsen Media Research Rights are no longer redeemable, Nielsen Media
Research may, except with respect to the Nielsen Media Research Right Redemption
Price, amend the Nielsen Media Research Rights in any manner that does not
adversely affect the interests of holders of the Nielsen Media Research Rights.
 
    Until a Nielsen Media Research Right is exercised, the holder thereof, as
such, will have no rights as a stockholder of Nielsen Media Research, including,
without limitation, the right to vote or to receive dividends.
 
    The summary description of the Nielsen Media Research Rights set forth above
does not purport to be complete and is qualified in its entirety by reference to
the Nielsen Media Research Rights Agreement, as the same may be amended from
time to time.
 
CERTAIN EFFECTS OF THE NIELSEN MEDIA RESEARCH RIGHTS AGREEMENT
 
    The Nielsen Media Research Rights Agreement is designed to protect
stockholders of Nielsen Media Research in the event of unsolicited offers to
acquire Nielsen Media Research and other coercive takeover tactics which, in the
opinion of the Board of Directors of Nielsen Media Research, could impair its
ability to represent stockholder interests. The provisions of the Nielsen Media
Research Rights Agreement may render an unsolicited takeover of Nielsen Media
Research more difficult or less likely to occur or might prevent such a
takeover, even though such takeover may offer Nielsen Media Research's
stockholders the opportunity to sell their stock at a price above the prevailing
market rate and may be favored by a majority of the stockholders of Nielsen
Media Research.
 
NO PREEMPTIVE RIGHTS
 
    No holder of any class of stock of Nielsen Media Research authorized at the
time of the Distribution will have any preemptive right to subscribe to any
securities of Nielsen Media Research of any kind or class.
 
DELAWARE GENERAL CORPORATION LAW
 
    The terms of Section 203 of the DGCL apply to Nielsen Media Research since
it is a Delaware corporation. Pursuant to Section 203, with certain exceptions,
a Delaware corporation may not engage in any of a broad range of business
combinations, such as mergers, consolidations and sales of assets, with an
"interested stockholder" for a period of three years from the time that such
person became an interested stockholders unless (a) the transaction that results
in the person's becoming an interested stockholder or the business combination
is approved by the board of directors of the corporation before the person
becomes an interested stockholder, (b) upon consummation of the transaction
which results in the stockholder becoming an interested stockholder, the
interested stockholder owns 85% or more of the voting stock of the corporation
outstanding at the time the transaction commenced, excluding shares owned by
persons who are directors and also officers and shares owned by certain employee
stock plans or (c) on or after the time the person becomes an interested
stockholder, the business combination is approved by the corporation's board of
directors and by holders of at least two-thirds of the corporation's outstanding
voting stock, excluding shares owned by the interested stockholder, at a meeting
of stockholders. Under Section 203, an "interested stockholder" is defined as
any person, other than the corporation and any direct or indirect majority-owned
subsidiary, that is (a) the owner of 15% or more of the outstanding voting stock
of the corporation or (b) an affiliate or associate of the corporation and was
the owner of 15% or more of the outstanding voting stock of the corporation at
any time within the three-year period immediately prior to the date on which it
is sought to be determined whether such person is an interested stockholder.
Section 203 does not apply to a corporation that so provides in an amendment to
its certificate of incorporation or by-laws passed by a majority of its
outstanding shares, but such stockholder
 
                                       99
<PAGE>
action does not become effective for 12 months following its adoption and would
not apply to persons who were already interested stockholders at the time of the
amendment. Nielsen Media Research's Restated Certificate of Incorporation does
not exclude Nielsen Media Research from the restrictions imposed under Section
203.
 
    Under certain circumstances, Section 203 makes it more difficult for a
person who would be an "interested stockholder" to effect various business
combinations with a corporation for a three-year period. The provisions of
Section 203 may encourage companies interested in acquiring Nielsen Media
Research to negotiate in advance with Nielsen Media Research's Board of
Directors, because the stockholder approval requirement would be avoided if the
Board of Directors approves either the business combination or the transaction
which results in the stockholder becoming an interested stockholder. Such
provisions also may have the effect of preventing changes in the Board of
Directors of Nielsen Media Research. It is further possible that such provisions
could make it more difficult to accomplish transactions which stockholders may
otherwise deem to be in their best interests.
 
PROVISIONS OF NIELSEN MEDIA RESEARCH RESTATED CERTIFICATE OF INCORPORATION AND
  AMENDED AND RESTATED BY-LAWS AFFECTING CHANGE IN CONTROL
 
    Certain provisions of the Nielsen Media Research Restated Certificate of
Incorporation and Amended and Restated By-laws may delay or make more difficult
unsolicited acquisitions or changes of control of Nielsen Media Research. It is
believed that such provisions will enable Nielsen Media Research to develop its
business in a manner that will foster its long-term growth without disruption
caused by the threat of a takeover not deemed by its Board of Directors to be in
the best interests of Nielsen Media Research and its stockholders. Such
provisions could have the effect of discouraging third parties from making
proposals involving an unsolicited acquisition or change of control of Nielsen
Media Research, although such proposals, if made, might be considered desirable
by a majority of Nielsen Media Research's stockholders. Such provisions may also
have the effect of making it more difficult for third parties to cause the
replacement of the current Board of Directors of Nielsen Media Research. These
provisions include (i) the availability of capital stock for issuance from time
to time at the discretion of the Board of Directors (see "--Authorized but
Unissued Capital Stock"), (ii) prohibitions against stockholders calling a
special meeting of stockholders or acting by written consent in lieu of a
meeting, (iii) requirements for advance notice for raising business or making
nominations at stockholders' meetings, (iv) the ability of the Board of
Directors to increase the size of the board and to appoint directors to newly
created directorships, (v) a classified Board of Directors and (vi) higher than
majority requirements to make certain amendments to the By-laws and Certificate
of Incorporation.
 
NO STOCKHOLDER ACTION BY WRITTEN CONSENT; SPECIAL MEETINGS
 
    The Nielsen Media Research Restated Certificate of Incorporation and Amended
and Restated By-laws provide that stockholder action can be taken only at an
annual or special meeting and cannot be taken by written consent in lieu of a
meeting. The Nielsen Media Research Restated Certificate of Incorporation and
Amended and Restated By-laws also provide that special meetings of the
stockholders can be called only by the Chief Executive Officer of Nielsen Media
Research or by a vote of the majority of the Board of Directors. Furthermore,
the By-laws of Nielsen Media Research provide that only such business as is
specified in the notice of any such special meeting of stockholders may come
before such meeting.
 
ADVANCE NOTICE FOR RAISING BUSINESS OR MAKING NOMINATIONS AT MEETINGS
 
    The By-laws of Nielsen Media Research establish an advance notice procedure
for stockholder proposals to be brought before an annual meeting of stockholders
and for nominations by stockholders of candidates for election as directors at
an annual or special meeting at which directors are to be elected. Only such
business may be conducted at an annual meeting of stockholders as has been
brought before the meeting by, or at the direction of, the Chairman of the Board
of Directors, or by a stockholder of Nielsen Media Research who is entitled to
vote at the meeting who has given to the Secretary of Nielsen Media
 
                                      100
<PAGE>
Research timely written notice, in proper form, of the stockholder's intention
to bring that business before the meeting. The chairman of such meeting has the
authority to make such determinations. Only persons who are nominated by, or at
the direction of, the Chairman of the Board of Directors, or who are nominated
by a stockholder who has given timely written notice, in proper form, to the
Secretary prior to a meeting at which directors are to be elected will be
eligible for election as directors of Nielsen Media Research.
 
    To be timely, a stockholder's notice of business to be brought before an
annual meeting and nominations of candidates for election as directors at any
annual meeting shall be delivered to the Secretary of Nielsen Media Research at
the principal executive offices of Nielsen Media Research not less than 70 days
nor more than 90 days prior to the first anniversary of the preceding year's
annual meeting; PROVIDED, HOWEVER, that in the event that the date of the annual
meeting is advanced by more than 20 days, or delayed by more than 70 days, from
such anniversary date, notice by the stockholder to be timely must be so
delivered not earlier than the ninetieth day prior to such annual meeting and
not later than the close of business on the later of the seventieth day prior to
such annual meeting or the tenth day following the day on which public
announcement of the date of such meeting is first made.
 
    To be timely, a stockholder's notice of nominations of persons for election
to the Board of Directors may be made at such a special meeting of stockholders
if the stockholder's notice shall be delivered to the Secretary of Nielsen Media
Research at the principal executive offices of Nielsen Media Research not
earlier than the ninetieth day prior to such special meeting and not later than
the close of business on the later of the seventieth day prior to such special
meeting or the tenth day following the day on which public announcement is first
made of the date of the special meeting and of the nominees proposed by the
Board of Directors to be elected at such meeting.
 
    The notice of any nomination for election as a director must set forth the
name and address of, and the class and number of shares of Nielsen Media
Research held by, the stockholder who intends to make the nomination and the
beneficial owner, if any, on whose behalf the nomination is being made; the name
and address of the person or persons to be nominated; a representation that the
stockholder is a holder of record of stock of Nielsen Media Research entitled to
vote at such meeting and intends to appear in person or by proxy at the meeting
to nominate the person or persons specified in the notice; a description of all
arrangements or understandings between the stockholder and each nominee and any
other person or persons (naming such person or persons) pursuant to which the
nomination or nominations are to be made by the stockholder; such other
information regarding each nominee proposed by such stockholder as would have
been required to be included in a proxy statement filed pursuant to the proxy
rules of the SEC had each nominee been nominated, or intended to be nominated,
by the Board of Directors; and the consent of each nominee to serve as a
director if so elected.
 
NUMBER OF DIRECTORS; FILLING OF VACANCIES; REMOVAL
 
    The Nielsen Media Research Restated Certificate of Incorporation and Amended
and Restated By-laws provide that newly created directorships resulting from an
increase in the authorized number of directors (or any vacancy) may be filled by
a vote of a majority of directors then in office. Accordingly, the Board of
Directors of Nielsen Media Research may be able to prevent any stockholder from
obtaining majority representation on the Board of Directors by increasing the
size of the board and filling the newly created directorships with its own
nominees. If any applicable provision of the DGCL expressly confers power on
stockholders to fill such a directorship at a special meeting of stockholders,
such a directorship may be filled at such meeting only by the affirmative vote
of at least 80% in voting power of all shares of Nielsen Media Research entitled
to vote generally in the election of directors, voting as a single class.
Directors may be removed only for cause, and only by the affirmative vote of at
least 80% in voting power of all shares of Nielsen Media Research entitled to
vote generally in the election of directors, voting as a single class.
 
                                      101
<PAGE>
CLASSIFIED BOARD OF DIRECTORS
 
    The Nielsen Media Research Restated Certificate of Incorporation provides
for Nielsen Media Research's Board of Directors to be divided into three classes
of directors serving staggered three-year terms. As a result, approximately one
third of Nielsen Media Research's Board of Directors will be elected each year.
See "Nielsen Media Research Management and Executive Compensation--Nielsen Media
Research Board of Directors."
 
    Nielsen Media Research believes that a classified board will help to assure
the continuity and stability of its Board of Directors, and its business
strategies and policies as determined by its Board, because a majority of the
directors at any given time will have prior experiences as directors of Nielsen
Media Research. This provision should also help to ensure that Nielsen Media
Research's Board of Directors, if confronted with an unsolicited proposal from a
third party that has acquired a block of Nielsen Media Research's voting stock,
will have sufficient time to review the proposal and appropriate alternatives
and to seek the best available result for all stockholders.
 
    This provision could prevent a party who acquires control of a majority of
the outstanding voting stock from obtaining control of Nielsen Media Research's
Board of Directors until the second annual stockholders meeting following the
date the acquiror obtains the controlling stock interest, could have the effect
of discouraging a potential acquiror from making a tender offer or otherwise
attempting to obtain control of Nielsen Media Research and could thus increase
the likelihood that incumbent directors will retain their positions.
 
AMENDMENTS TO THE AMENDED AND RESTATED BY-LAWS
 
    The Nielsen Media Research Restated Certificate of Incorporation provides
that the affirmative vote of the holders of at least 80% in voting power of all
the shares of Nielsen Media Research entitled to vote generally in the election
of directors, voting together as a single class, shall be required in order for
the stockholders to alter, amend or repeal any provision of the Amended and
Restated By-laws which is to the same effect as provisions contained in the
Restated Certificate of Incorporation relating to (i) the amendment of the
Amended and Restated By-laws, (ii) the classified Board of Directors and the
filling of director vacancies and (iii) calling and taking actions at meetings
of stockholders and prohibiting stockholders from taking action by written
consent.
 
AMENDMENTS TO THE RESTATED CERTIFICATE OF INCORPORATION
 
    The Nielsen Media Research Restated Certificate of Incorporation requires
the affirmative vote of the holders of at least 80% in voting power of all the
shares of Nielsen Media Research entitled to vote generally in the election of
directors, voting together as a single class, to alter, amend or repeal
provisions of the Restated Certificate of Incorporation relating to (i) the
amendment of the Restated Certificate of Incorporation and/or the Amended and
Restated By-laws, (ii) the classified Board of Directors and the filling of
director vacancies and (iii) calling and taking actions at meetings of
stockholders and prohibiting stockholders from taking action by written consent.
 
INDEMNIFICATION AND LIMITATION OF LIABILITY FOR DIRECTORS AND OFFICERS
 
    The Nielsen Media Research Restated Certificate of Incorporation provides
that Nielsen Media Research shall indemnify directors and officers to the
fullest extent permitted by the laws of the State of Delaware. The Nielsen Media
Research Restated Certificate of Incorporation also provides that a director of
Nielsen Media Research shall not be liable to the corporation or its
stockholders for monetary damages for breach of fiduciary duty as a director,
except to the extent such exemption from liability or limitation thereof is not
permitted under the DGCL as the same exists or may hereafter be amended.
 
    The indemnification rights conferred by the Restated Certificate of
Incorporation of Nielsen Media Research are not exclusive of any other right to
which a person seeking indemnification may otherwise be entitled. Nielsen Media
Research will also provide liability insurance for the directors and officers
for certain losses arising from claims or charges made against them, while
acting in their capacities as directors or officers.
 
                                      102
<PAGE>
                             AVAILABLE INFORMATION
 
    IMS HEALTH has filed with the SEC a Registration Statement on Form 10 with
respect to the shares of IMS HEALTH Common Stock to be received by the
stockholders of Cognizant in the Distribution. This Information Statement does
not contain all of the information set forth in the Form 10 Registration
Statement and the exhibits thereof, to which reference is hereby made.
Statements made in this Information Statement as to the contents of any
contract, agreement or other documents referred to herein are not necessarily
complete. With respect to each such contract, agreement or other documents filed
as an exhibit to the Registration Statement, reference is made to such exhibit
for a more complete description of the matter involved, and each such statement
shall be deemed qualified in its entirety by such reference. The Registration
Statement and the exhibits thereto may be inspected and copied at the public
reference facilities maintained by the SEC at Room 1024, 450 Fifth Street, N.W.,
Washington, D.C. 20549 and at the Regional Offices of the SEC at Seven World
Trade Center, Suite 1300, New York, New York 10048 and in the Citicorp Center,
Suite 1400, 500 West Madison Street, Chicago, Illinois 60662. In addition,
copies of the Registration Statement and related documents may be obtained
through the SEC Internet address at http://www.sec.gov.
 
                             REPORTS OF IMS HEALTH
 
    After the Distribution, IMS HEALTH will be required to comply with the
reporting requirements of the Exchange Act and, in accordance therewith, to file
reports, proxy statements and other information with the SEC.
 
    After the Distribution, such reports, proxy statements and other information
may be inspected and copied at the public reference facilities of the SEC listed
above and obtained by mail from the SEC as described above. Application will be
made for listing the shares of IMS HEALTH Common Stock on the NYSE and, when
such shares of IMS HEALTH Common Stock commence trading on the NYSE, such
reports, proxy statements and other information will be available for inspection
at the offices of the NYSE, 20 Broad Street, New York, New York 10005.
 
    Additionally, IMS HEALTH will be required to provide annual reports,
containing audited financial statements, to its stockholders in connection with
its annual meetings of stockholders.
 
                                      103
<PAGE>
                       INDEX TO FINANCIAL STATEMENTS (1)
 
<TABLE>
<CAPTION>
                                                                                                               PAGE
                                                                                                             ---------
<S>                                                                                                          <C>
COGNIZANT CORPORATION (2)
 
Report of Independent Accountants..........................................................................        F-2
 
Financial Statements:
 
Consolidated Statements of Income for the Three Months Ended March 31, 1998 and 1997 (unaudited) and the
  Three Years Ended December 31, 1997......................................................................        F-3
 
Consolidated Statements of Financial Position as of March 31, 1998 (unaudited) and
  December 31, 1997 and 1996...............................................................................        F-4
 
Consolidated Statements of Cash Flows for the Three Months Ended March 31, 1998 and 1997 (unaudited) and
  the Three Years Ended December 31, 1997..................................................................        F-5
 
Notes to Consolidated Financial Statements.................................................................        F-7
 
IMS HEALTH INCORPORATED
 
Report of Independent Accountants..........................................................................       F-32
 
Statement of Financial Position as of March 31, 1998.......................................................       F-33
 
Notes to Financial Statement...............................................................................       F-34
 
NIELSEN MEDIA RESEARCH, INC.
 
Report of Independent Accountants..........................................................................       F-35
 
Financial Statements:
 
Consolidated Statements of Operations for the Three Months Ended March 31, 1998 and 1997 (unaudited) and
  the Three Years Ended December 31, 1997..................................................................       F-36
 
Consolidated Statements of Financial Position as of March 31, 1998 (unaudited) and December 31, 1997 and
  1996.....................................................................................................       F-37
 
Consolidated Statements of Cash Flows for the Three Months Ended March 31, 1998 and 1997 (unaudited) and
  the Three Years Ended December 31, 1997..................................................................       F-38
 
Consolidated Statements of Divisional Equity for the Three Months Ended March 31, 1998 (unaudited) and the
  Three Years Ended December 31, 1997......................................................................       F-39
 
Notes to Consolidated Financial Statements.................................................................       F-40
 
Financial Statement Schedule:
 
Report of Independent Accountants..........................................................................       F-52
 
Schedule II -- Valuation and Qualifying Accounts for the year ended December 31, 1997, 1996 and 1995.......       F-53
</TABLE>
 
- ------------------------
 
(1) Unaudited financial information for quarters ended March 31, 1998 and 1997
    to be supplied.
 
(2) Because of the significance to Cognizant Corporation of the IMS HEALTH
    Business to be distributed to Cognizant stockholders in the Distribution,
    IMS HEALTH will be the accounting successor to Cognizant from a financial
    reporting perspective. See Note 20 to the Cognizant Corporation Consolidated
    Financial Statements.
 
                                      F-1
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Shareholders and Board of Directors of Cognizant Corporation:
 
    We have audited the accompanying consolidated statements of financial
position of Cognizant Corporation as of December 31, 1997 and 1996, and the
related consolidated statements of income, shareholders' equity and cash flows
for each of the three years in the period ended December 31, 1997. These
financial statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these financial statements based on
our audits.
 
    We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and the significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
    In our opinion, the financial statements referred to above present fairly,
in all material respects, the consolidated financial position of Cognizant
Corporation as of December 31, 1997 and 1996, and the consolidated results of
their operations and their cash flows for each of the three years in the period
ended December 31, 1997, in conformity with generally accepted accounting
principles.
 
    As discussed in Note 2 to the consolidated financial statements, in 1995,
the Company adopted Statement of Financial Accounting Standards No. 121,
"Accounting for the Impairment of Long-Lived Assets and Long-Lived Assets to be
Disposed of".
 
/s/ Coopers & Lybrand L.L.P.
 
COOPERS & LYBRAND L.L.P.
 
New York, New York
February 17, 1998
 
                                      F-2
<PAGE>
                             COGNIZANT CORPORATION
 
                       CONSOLIDATED STATEMENTS OF INCOME
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
<TABLE>
<CAPTION>
                                                                             YEARS ENDED DECEMBER 31,
                                                                  ----------------------------------------------
                                                                       1997            1996            1995
                                                                  --------------  --------------  --------------
<S>                                                               <C>             <C>             <C>
OPERATING REVENUE...............................................   $   1,418,153   $   1,730,596   $   1,542,340
                                                                  --------------  --------------  --------------
Operating Costs.................................................         597,199         746,781         753,466
Selling and Administrative Expenses.............................         368,298         506,786         488,865
Depreciation and Amortization...................................         117,314         133,861         132,532
Restructuring Expense...........................................               0               0          12,800
                                                                  --------------  --------------  --------------
OPERATING INCOME................................................         335,342         343,168         154,677
                                                                  --------------  --------------  --------------
Interest Income.................................................          12,775           9,456          10,325
Interest Expense................................................          (2,293)         (1,338)           (540)
Gartner Equity Income...........................................          65,120               0               0
Gains from Dispositions--Net....................................           9,391             200          15,124
Other Income/(Expense)--Net.....................................           9,900          (2,465)        (17,029)
                                                                  --------------  --------------  --------------
Non-Operating Income--Net.......................................          94,893           5,853           7,880
                                                                  --------------  --------------  --------------
Income Before Provision for Income Taxes........................         430,235         349,021         162,557
Provision for Income Taxes......................................        (117,885)       (153,570)        (73,676)
                                                                  --------------  --------------  --------------
NET INCOME......................................................   $     312,350   $     195,451   $      88,881
                                                                  --------------  --------------  --------------
BASIC EARNINGS PER SHARE OF COMMON STOCK........................   $        1.89   $        1.15   $         .52
                                                                  --------------  --------------  --------------
DILUTED EARNINGS PER SHARE OF COMMON STOCK......................   $        1.86   $        1.15   $         .52
                                                                  --------------  --------------  --------------
Average Number of Shares Outstanding--Basic.....................     165,163,000     169,944,000     169,522,000
Dilutive Effect of Shares Issuable as of Year-End Under Stock
  Option Plans..................................................       1,667,000         187,000       2,061,000
Adjustment of Shares Applicable to Exercised Stock Options and
  Restricted Stock..............................................         660,000         369,000          25,000
                                                                  --------------  --------------  --------------
Average Number of Shares Outstanding--Diluted...................     167,490,000     170,500,000     171,608,000
                                                                  --------------  --------------  --------------
</TABLE>
 
   The accompanying notes are an integral part of the consolidated financial
                                  statements.
 
                                      F-3
<PAGE>
                             COGNIZANT CORPORATION
 
                 CONSOLIDATED STATEMENTS OF FINANCIAL POSITION
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
<TABLE>
<CAPTION>
                                                                                             DECEMBER 31,
                                                                                       -------------------------
                                                                                           1997         1996
                                                                                       ------------  -----------
<S>                                                                                    <C>           <C>
ASSETS
CURRENT ASSETS
Cash and Cash Equivalents............................................................  $    318,435  $   428,520
Accounts Receivable--Net.............................................................       303,609      453,791
Other Current Assets.................................................................        72,368      112,151
                                                                                       ------------  -----------
      Total Current Assets                                                                  694,412      994,462
                                                                                       ------------  -----------
INVESTMENT IN GARTNER GROUP..........................................................       195,695            0
                                                                                       ------------  -----------
NOTES RECEIVABLE AND OTHER INVESTMENTS...............................................       109,712      117,706
                                                                                       ------------  -----------
PROPERTY, PLANT AND EQUIPMENT--NET...................................................       233,583      268,888
                                                                                       ------------  -----------
Other Assets--Net....................................................................
Computer Software....................................................................       142,268      139,040
Goodwill.............................................................................        87,430      251,483
Other Assets.........................................................................       116,420      103,403
                                                                                       ------------  -----------
      Total Other Assets--Net                                                               346,118      493,926
                                                                                       ------------  -----------
TOTAL ASSETS.........................................................................  $  1,579,520  $ 1,874,982
                                                                                       ------------  -----------
                                                                                       ------------  -----------
LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities..................................................................
Accounts and Notes Payable...........................................................  $     58,796  $    46,923
Accrued and Other Current Liabilities................................................       212,944      266,932
Accrued Income Taxes.................................................................        57,549       63,416
Deferred Revenues....................................................................       111,921      292,970
                                                                                       ------------  -----------
      Total Current Liabilities                                                             441,210      670,241
                                                                                       ------------  -----------
POSTRETIREMENT AND POSTEMPLOYMENT BENEFITS...........................................        49,927       60,269
DEFERRED INCOME TAXES................................................................       113,749      105,074
MINORITY INTERESTS...................................................................       101,209       90,635
OTHER LIABILITIES....................................................................        71,855       76,150
                                                                                       ------------  -----------
TOTAL LIABILITIES....................................................................       777,950    1,002,369
                                                                                       ------------  -----------
                                                                                       ------------  -----------
COMMITMENTS AND CONTINGENCIES........................................................
SHAREHOLDERS' EQUITY.................................................................
Preferred Stock, Par Value $.01 Per Share, Authorized--
  10,000,000 Shares; Outstanding--None...............................................
Series Common Stock, Par Value $.01 Per Share, Authorized--
  10,000,000 Shares; Outstanding--None...............................................
Common Stock, Par Value $.01 Per Share, Authorized--400,000,000 Shares; Issued
  171,120,069 and 171,082,301 Shares in 1997 and 1996, respectively..................         1,711        1,711
Capital Surplus......................................................................       808,550      805,170
Retained Earnings....................................................................       358,456       65,989
Treasury Stock, at cost, 9,026,448 and 800,000 Shares in 1997 and 1996,
  respectively.......................................................................      (323,026)     (25,200)
Cumulative Translation Adjustment....................................................       (76,771)     (11,752)
Unrealized Gains on Investments......................................................        32,650       36,695
                                                                                       ------------  -----------
TOTAL SHAREHOLDERS' EQUITY...........................................................       801,570      872,613
                                                                                       ------------  -----------
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY...........................................  $  1,579,520  $ 1,874,982
                                                                                       ------------  -----------
                                                                                       ------------  -----------
</TABLE>
 
   The accompanying notes are an integral part of the consolidated financial
                                  statements.
 
                                      F-4
<PAGE>
                             COGNIZANT CORPORATION
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
 
                          DOLLAR AMOUNTS IN THOUSANDS
 
<TABLE>
<CAPTION>
                                                                             YEARS ENDED DECEMBER 31,
                                                                          -------------------------------
                                                                            1997       1996       1995
                                                                          ---------  ---------  ---------
<S>                                                                       <C>        <C>        <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income..............................................................  $ 312,350  $ 195,451  $  88,881
Reconciliation of Net Income to Net Cash
  Provided by Operating Activities:
    Depreciation and Amortization.......................................    117,314    133,861    132,532
    Net Gains from Dispositions.........................................     (9,391)      (200)   (15,124)
    Write-Off of Purchased In-Process Research and Development..........     --         33,233     --
    Restructuring Provisions............................................     --         --         12,800
    Restructuring Payments..............................................     --        (11,515)   (15,544)
    Postemployment Benefit Expense......................................     --            666     37,632
    Postemployment Benefit Payments.....................................     (7,129)   (11,045)   (18,480)
    Non-Recurring Charge................................................     --         --         90,070
    Non-Recurring Charge Payments.......................................     (5,255)   (13,125)    --
    Net Increase in Accounts Receivable.................................     (1,378)   (19,576)   (83,035)
    Net Increase in Deferred Revenue....................................      9,973     23,276     53,788
    Equity Income, Net of Taxes.........................................    (38,040)    --         --
    Minority Interests..................................................      4,797     11,710     14,696
    Deferred Income Taxes...............................................     38,562     16,566    (13,392)
    Net (Decrease) Increase in Accrued Income Taxes.....................    (21,352)    23,606    (35,994)
    Net (Increase) Decrease in Other Working Capital Items..............    (43,437)   (30,885)    39,709
                                                                          ---------  ---------  ---------
Net Cash Provided by Operating Activities...............................    357,014    352,023    288,539
                                                                          ---------  ---------  ---------
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from Maturities of Marketable Securities.......................     --        193,392     40,338
Payments for Marketable Securities......................................     --       (165,791)   (70,546)
Payments for Acquisitions of Businesses.................................     --        (24,386)   (10,916)
Proceeds from Sale of Businesses and Investments........................     44,901      1,565     11,349
Capital Expenditures....................................................    (71,894)   (74,963)   (77,032)
Additions to Computer Software..........................................    (66,673)   (49,395)   (70,565)
Additions to Other Assets...............................................    (32,905)   (19,187)    (4,694)
Increase in Other Investments--Net......................................    (16,705)   (24,423)    (8,232)
Change of Gartner Group to Equity Basis.................................   (123,697)    --         --
Payments for Purchase of Gartner Group Common Stock.....................     --        (49,419)    (8,372)
Other...................................................................     26,294     54,542     50,501
                                                                          ---------  ---------  ---------
Net Cash Used in Investing Activities...................................   (240,679)  (158,065)  (148,169)
                                                                          ---------  ---------  ---------
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments for Purchase of Treasury Stock.................................   (324,767)    --         --
Proceeds from Exercise of Stock Options.................................     26,409        557     --
Dividends Paid..........................................................    (19,883)    --         --
Proceeds from Employee Stock Purchase Plan..............................      1,683     --         --
Other Stock Transactions with Employees.................................     --         14,377      5,149
Proceeds from Issuance of Purchased Stock Options.......................     --          8,699     --
Net Transfers from (to) The Dun & Bradstreet Corporation................     --         44,880   (113,051)
Minority Interest Financing.............................................    100,000     --         --
Payment of Short-Term Debt..............................................     --        (50,000)    --
Other...................................................................      1,360     62,018     (8,193)
                                                                          ---------  ---------  ---------
Net Cash (Used in) Provided by Financing Activities.....................   (215,198)    80,531   (116,095)
                                                                          ---------  ---------  ---------
Effect of Exchange Rate Changes on Cash and Cash Equivalents............    (11,222)    (3,074)     4,846
                                                                          ---------  ---------  ---------
(Decrease) Increase in Cash and Cash Equivalents........................   (110,085)   271,415     29,121
Cash and Cash Equivalents, Beginning of Year............................    428,520    157,105    127,984
                                                                          ---------  ---------  ---------
Cash and Cash Equivalents, End of Year..................................  $ 318,435  $ 428,520  $ 157,105
                                                                          ---------  ---------  ---------
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash Paid during the Year for Interest..................................  $   2,293  $   1,463  $     425
Cash Paid during the Year for Income Taxes..............................  $  72,827  $  48,372  $  26,956
</TABLE>
 
   The accompanying notes are an integral part of the consolidated financial
                                  statements.
 
                                      F-5
<PAGE>
                             COGNIZANT CORPORATION
 
                CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
<TABLE>
<CAPTION>
                                                                                                               UNREALIZED
                                                                                                  CUMULATIVE      GAINS
THREE YEARS ENDED                     DIVISIONAL    COMMON      CAPITAL    RETAINED    TREASURY   TRANSLATION  (LOSSES) ON
DECEMBER 31, 1997                       EQUITY       STOCK      SURPLUS    EARNINGS      STOCK    ADJUSTMENT   INVESTMENTS
- ------------------------------------  ----------  -----------  ---------  -----------  ---------  -----------  -----------
<S>                                   <C>         <C>          <C>        <C>          <C>        <C>          <C>
BALANCE, JANUARY 1, 1995............  $  622,253   $  --       $  --       $  --       $  --       $ (15,770)   $  --
                                      ----------  -----------  ---------  -----------  ---------  -----------  -----------
Net Income..........................      88,881
Net Transfers to The Dun &
  Bradstreet Corporation............    (113,051)
Change in Cumulative Translation
  Adjustment........................                                                                  22,275
                                      ----------  -----------  ---------  -----------  ---------  -----------  -----------
BALANCE, DECEMBER 31, 1995..........     598,083      --          --          --          --           6,505       --
                                      ----------  -----------  ---------  -----------  ---------  -----------  -----------
Net Income..........................     129,462
Net Transfers from The Dun &
  Bradstreet Corporation............      44,880
Change in Cumulative Translation
  Adjustment........................                                                                 (16,817)
                                      ----------  -----------  ---------  -----------  ---------  -----------  -----------
BALANCE, NOVEMBER 1, 1996...........      --           1,711     795,914      --         (25,200)    (10,312)      --
                                      ----------  -----------  ---------  -----------  ---------  -----------  -----------
Net Income..........................                                          65,989
Exercise of Stock Options
  (18,467)..........................                                 557
Restricted Stock Plan (6,286).......                                 210
    Less: Unearned Portion..........                                (210)
Purchase of Stock Options
  (2,692,700).......................                               8,699
Change in Cumulative Translation
  Adjustment........................                                                                  (1,440)
Unrealized Gains on
  Investments--Net..................                                                                               36,695
                                      ----------  -----------  ---------  -----------  ---------  -----------  -----------
BALANCE, DECEMBER 31, 1996..........      --           1,711     805,170      65,989     (25,200)    (11,752)      36,695
                                      ----------  -----------  ---------  -----------  ---------  -----------  -----------
Net Income..........................                                         312,350
Cash Dividends ($.12 per share).....                                         (19,883)
Exercise of Stock Options
  (37,768)..........................                               1,151
Treasury Stock Reissued Under:
  Exercise of Stock Options
    (818,925).......................                               2,187                  25,258
  Restricted Stock Plan (41,400)....                                                       1,741
    Less: Unearned Portion..........                                                      (1,741)
    Plus: Earned Portion............                                  42
  Employee Stock Purchase Plan
    (46,645)........................                                                       1,683
Treasury Shares Acquired
  (9,133,418).......................                                                    (324,767)
Change in Cumulative Translation
  Adjustment........................                                                                 (65,019)
Unrealized Loss on
  Investments--Net..................                                                                               (4,045)
                                      ----------  -----------  ---------  -----------  ---------  -----------  -----------
BALANCE, DECEMBER 31, 1997            $   --       $   1,711   $ 808,550   $ 358,456   $(323,026)  $ (76,771)   $  32,650
                                      ----------  -----------  ---------  -----------  ---------  -----------  -----------
                                      ----------  -----------  ---------  -----------  ---------  -----------  -----------
 
<CAPTION>
 
THREE YEARS ENDED
DECEMBER 31, 1997                       TOTAL
- ------------------------------------  ---------
<S>                                   <C>
BALANCE, JANUARY 1, 1995............  $ 606,483
                                      ---------
Net Income..........................     88,881
Net Transfers to The Dun &
  Bradstreet Corporation............   (113,051)
Change in Cumulative Translation
  Adjustment........................     22,275
                                      ---------
BALANCE, DECEMBER 31, 1995..........    604,588
                                      ---------
Net Income..........................    129,462
Net Transfers from The Dun &
  Bradstreet Corporation............     44,880
Change in Cumulative Translation
  Adjustment........................    (16,817)
                                      ---------
BALANCE, NOVEMBER 1, 1996...........    762,113
                                      ---------
Net Income..........................     65,989
Exercise of Stock Options
  (18,467)..........................        557
Restricted Stock Plan (6,286).......        210
    Less: Unearned Portion..........       (210)
Purchase of Stock Options
  (2,692,700).......................      8,699
Change in Cumulative Translation
  Adjustment........................     (1,440)
Unrealized Gains on
  Investments--Net..................     36,695
                                      ---------
BALANCE, DECEMBER 31, 1996..........    872,613
                                      ---------
Net Income..........................    312,350
Cash Dividends ($.12 per share).....    (19,883)
Exercise of Stock Options
  (37,768)..........................      1,151
Treasury Stock Reissued Under:
  Exercise of Stock Options
    (818,925).......................     27,445
  Restricted Stock Plan (41,400)....      1,741
    Less: Unearned Portion..........     (1,741)
    Plus: Earned Portion............         42
  Employee Stock Purchase Plan
    (46,645)........................      1,683
Treasury Shares Acquired
  (9,133,418).......................   (324,767)
Change in Cumulative Translation
  Adjustment........................    (65,019)
Unrealized Loss on
  Investments--Net..................     (4,045)
                                      ---------
BALANCE, DECEMBER 31, 1997            $ 801,570
                                      ---------
                                      ---------
</TABLE>
 
   The accompanying notes are an integral part of the consolidated financial
                                  statements.
 
                                      F-6
<PAGE>
                             COGNIZANT CORPORATION
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 1. BASIS OF PRESENTATION
 
    Cognizant Corporation (the "Company") integrates information and technology
to create business insight. The Company includes I.M.S. International, Inc.
("IMS"), Nielsen Media Research, Inc. ("Nielsen Media Research"), Erisco Inc.
("Erisco"), Cognizant Technology Solutions Corporation ("CTS"), Cognizant
Enterprises, Inc. ("Enterprises"), SSJ K.K. ("Super Systems Japan"), and Pilot
Software, Inc. ("Pilot"), which was divested in July 1997. During 1997, the
Company's voting interest in Gartner Group, Inc. ("Gartner") fell below 50% due
principally to Gartner stock option exercises. Accordingly, the Company has
deconsolidated its investment in Gartner and accounted for its interest on an
equity basis for the year-ended December 31, 1997. The prior years' financial
statements, however, continue to account for Gartner as a consolidated
subsidiary.
 
    On November 1, 1996 (the "D&B Distribution Date"), The Dun & Bradstreet
Corporation ("D&B") distributed to its shareholders all of the outstanding
shares of common stock of the Company, then a wholly-owned subsidiary of D&B
(the "D&B Distribution"). In the D&B Distribution, holders of D&B common stock
received one share of the Company's common stock for every share of D&B common
stock held.
 
    These financial statements reflect the financial position, results of
operations and cash flows of the Company as if it were a separate entity for all
periods presented. D&B's historical basis in the assets and liabilities of the
Company has been carried over.
 
    The financial statements for 1996 and 1995 also include allocations of
certain D&B corporate headquarters assets (including prepaid pension assets),
liabilities (including pension and postretirement benefits) and expenses
(including cash management, legal, accounting, tax, employee benefits, insurance
services, data services and other D&B corporate overhead) relating to the
Company's businesses that were transferred to the Company from D&B. Management
believes these allocations are reasonable. However, the financial information
included herein for 1996 and 1995 may not necessarily reflect the financial
position, results of operations, and cash flows had the Company been a separate
entity.
 
NOTE 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
    CONSOLIDATION.  The consolidated financial statements of the Company include
the accounts of the Company and its subsidiaries after elimination of all
material intercompany accounts and transactions. Investments in companies over
which the Company has significant influence but not a controlling interest are
accounted for under the equity method of accounting. The Company recognizes as
income any gains or losses related to the sale or issuance of stock by a
consolidated subsidiary or a company accounted for under the equity basis. The
financial statements of IMS and its affiliates reflect a fiscal year ending
November 30 to facilitate timely reporting of the Company's financial results.
 
    CASH EQUIVALENTS.  The Company considers all highly liquid investments with
a maturity of 90 days or less at the time of purchase to be cash equivalents.
 
    MARKETABLE SECURITIES.  The Company values all marketable securities that
mature in more than 90 days at amortized cost (which approximates market value)
as it is management's intent to hold these instruments to maturity. Other
marketable securities, principally consisting of equity securities, are
classified as available-for-sale. Such securities are carried at fair value,
with the unrealized gains and losses, net of income taxes, reported as a
component of shareholders' equity.
 
                                      F-7
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    PROPERTY, PLANT AND EQUIPMENT.  Buildings and machinery and equipment are
depreciated over their estimated useful lives using principally the
straight-line method. Leasehold improvements are amortized on a straight-line
basis over the shorter of the term of the lease or the estimated useful life of
the improvement.
 
    COMPUTER SOFTWARE.  Direct costs incurred in the development of computer
software are capitalized in accordance with Statement of Financial Accounting
Standards ("SFAS") No. 86, "Accounting for the Costs of Computer Software to be
Sold, Leased, or Otherwise Marketed". Costs incurred to establish technological
feasibility of a computer software product are expensed in the periods in which
they are incurred. Capitalization ceases and amortization starts when the
product is available for general release to customers. Computer software costs
are being amortized, on a product by product basis, generally over three to five
years. Annual amortization is the greater of the amount computed using (a) the
ratio that gross revenues for a product bear to the total of current and
anticipated future gross revenues for that product, or (b) the straight-line
method over the remaining estimated economic life of the product. At each
balance sheet date, the Company reviews the recoverability of the unamortized
capitalized costs of computer software products by comparing the carrying value
of computer software with its estimated net realizable value.
 
    GOODWILL.  Goodwill represents the excess purchase price over the fair value
of identifiable net assets of businesses acquired and is amortized on a
straight-line basis over seven to forty years. At each balance sheet date, the
Company reviews the recoverability of goodwill, not identified with impaired
long-lived assets, based on estimated undiscounted future cash flow from
operating activities compared with the carrying value of goodwill and recognizes
any impairment on the basis of such comparison. The recognition and measurement
of goodwill impairment is assessed at the business unit level.
 
    OTHER ASSETS.  Other intangibles result from acquisitions and database
development and are included in other assets. Other intangibles are being
amortized, using principally the straight-line method, over three to seven
years.
 
    The Company adopted the provisions of SFAS No. 121, "Accounting for the
Impairment of Long-Lived Assets and for Long-Lived Assets to Be Disposed Of" in
1995. This statement requires that long-lived assets and certain identifiable
intangibles held and used by an entity be reviewed for impairment whenever
events or changes in circumstances indicate that the carrying amount of an asset
may not be recoverable. In general, this statement requires recognition of an
impairment loss when the sum of undiscounted expected future cash flow is less
than the carrying amount of such assets. The measurement for such impairment
loss is then based on the fair value of the asset. See Note 6 to the Cognizant
Consolidated Financial Statements.
 
    REVENUE RECOGNITION.  The Company recognizes revenue as earned, which is
over the contract period or as the information is delivered or related services
are performed. Amounts billed for service and subscriptions are credited to
deferred revenues and reflected in operating revenue over the subscription term,
which is generally one year. Software license revenue is recognized upon
delivery of the software and documentation when there are no significant
remaining related obligations. Revenue from post-contract customer support
(maintenance) is recognized on a straight-line basis over the term of the
contract.
 
                                      F-8
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    FOREIGN CURRENCY TRANSLATION.  The Company has significant investments in
non-U.S. countries. Therefore, changes in the value of foreign currencies affect
the Company's consolidated financial statements when translated into U.S.
dollars.
 
    For all operations outside the United States where the Company has
designated the local currency as the functional currency, assets and liabilities
are translated using end-of-period exchange rates; revenues and expenses are
translated using average rates of exchange. For these countries, currency
translation adjustments are accumulated in a separate component of shareholders'
equity whereas realized transaction gains and losses are recognized in other
expense--net. For operations in countries that are considered to be highly
inflationary, where the U.S. dollar is designated as the functional currency,
monetary assets and liabilities are translated using end-of-period exchange
rates, non-monetary accounts are translated using historical exchange rates, and
all translation and transaction adjustments are recognized in other
expense--net.
 
    INCOME TAXES.  Prior to the D&B Distribution, the Company was included in
the Federal and certain state and non-U.S. income tax returns of D&B. The
provision for income taxes in the Company's financial statements has been
calculated on a separate-company basis. Income taxes paid on behalf of the
Company by D&B, prior to the D&B Distribution, are included in Divisional
Equity.
 
    DIVISIONAL EQUITY.  Divisional Equity includes historical investments and
advances from D&B prior to the D&B Distribution, including net transfers to/from
D&B, third-party liabilities paid on behalf of the Company by D&B and amounts
due to/from D&B for services and other charges, as well as current-period income
through the D&B Distribution Date.
 
    ESTIMATES.  The preparation of financial statements in conformity with
generally accepted accounting principles requires management to make estimates
and assumptions that affect the reported amounts of assets, liabilities,
revenues and expenses and the disclosure of contingent assets and liabilities.
Actual results could differ from those estimates. Estimates are used for, but
not limited to, the accounting for: allowance for uncollectible accounts
receivable, depreciation and amortization, capitalized software costs, employee
benefit plans, taxes, restructuring reserves and contingencies.
 
    EARNINGS PER SHARE.  In 1997, the Company adopted SFAS No. 128, "Earnings
Per Share". Previously reported earnings per share amounts have been restated.
Basic earnings per share are calculated by dividing net income by weighted
average common shares. Diluted earnings per share are calculated by dividing net
income by dilutive potential common shares. Dilutive potential common shares are
calculated in accordance with the Treasury stock method, which assumes that
proceeds from the exercise of all options are used to repurchase common stock at
market value. The amount of shares remaining after the proceeds are exhausted
represent the potentially dilutive effect of the securities. The computation
includes the weighted average number of shares of D&B common stock outstanding
through the D&B Distribution Date, reflecting the one-for-one distribution
ratio, and the weighted average number of shares of Cognizant common stock
outstanding since the D&B Distribution.
 
    CONCENTRATIONS OF CREDIT RISK.  IMS maintains accounts receivable balances
($228,284 and $237,279 at December 31, 1997 and 1996, respectively), principally
from customers in the pharmaceutical industry.
 
                                      F-9
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    RECLASSIFICATIONS.  Certain prior-year amounts have been reclassified to
conform with the 1997 presentation.
 
    RECENTLY ISSUED ACCOUNTING STANDARDS:  In June 1997, the Financial
Accounting Standards Board ("FASB") issued SFAS No. 130, "Reporting
Comprehensive Income", which requires that changes in comprehensive income be
shown in a financial statement that is displayed with the same prominence as
other financial statements. This statement is effective for periods beginning
after December 15, 1997. The Company is in the process of determining its
preferred disclosure format.
 
    In February 1998, the FASB issued SFAS No. 132, "Employers' Disclosures
About Pensions And Other Postretirement Benefits", which changes current
financial statement disclosure requirements from those required under SFAS No.
87, "Employers' Accounting for Pensions", SFAS No. 88, "Employers' Accounting
for Settlements and Curtailments of Defined Benefit Pension Plans and for
Termination Benefits", and SFAS No. 106, "Employers' Accounting for
Postretirement Benefits Other Than Pensions". The statement does not change the
existing measurement or recognition provisions of SFAS Nos. 87, 88 or 106, and
is effective for the fiscal years beginning after December 15, 1997. The Company
is in the process of evaluating the disclosure requirements under this standard.
 
NOTE 3. INVESTMENT IN GARTNER
 
    In the third quarter of 1997, the Company's voting interest in Gartner fell
below 50% as a result of the exercise of Gartner employee stock options and
employee stock purchases. Accordingly, the Company has deconsolidated Gartner
and is accounting for its ownership interest on the equity basis.
 
    The Company has restated the first and second quarter Statements of Income
to reflect the change to equity accounting as of January 1, 1997. Generally
accepted accounting principles do not permit the restatement of prior-year
financial results.
 
    During the third and fourth quarters of 1997, the proceeds from the issuance
of shares to Gartner employees, including associated tax benefits, increased
Gartner's equity and reduced the Company's ownership interest by slightly less
than 2%. This reduction in ownership was partially offset by an increase in
Gartner treasury stock. As a result, the Company recognized within other
income/expense-net, a pre-tax unrealized gain on its investment in Gartner ("SAB
51 Gain") of $14,689 corresponding to the net increase in the underlying value
of its investment in Gartner.
 
                                      F-10
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 3. INVESTMENT IN GARTNER (CONTINUED)
    Selected financial information regarding the results of operations and
financial position of Gartner is summarized below:
 
<TABLE>
<CAPTION>
                                                                         YEARS ENDED DECEMBER
                                                                                 31,
                                                                        ----------------------
                                                                           1997        1996
                                                                        ----------  ----------
<S>                                                                     <C>         <C>
                                                                             (UNAUDITED)
Condensed Income Statement Information
Operating Revenue.....................................................  $  548,539  $  423,565
Operating Income......................................................  $  126,239  $   61,624
Income Before Provision for Taxes.....................................  $  134,385  $   65,803
Net Income............................................................  $   79,732  $   23,987
 
Condensed Balance Sheet Information
Current Assets........................................................  $  439,356  $  325,904
Non-current Assets....................................................  $  237,284  $  133,031
Current Liabilities...................................................  $  338,087  $  273,616
Non-current Liabilities...............................................  $    3,933  $    2,871
</TABLE>
 
NOTE 4. DISPOSITIONS
 
    During 1997, the Company recorded a $39,336 pre-tax gain on the sale of its
investment in WEFA Group, Inc. and a portion of its investment in TSI
International, Inc. and Aspect Development, Inc. These investments, which were
part of Enterprises' portfolio, generated cash proceeds of $43,601.
 
    Additionally, in the third quarter, the Company sold Pilot and recorded a
non-cash pre-tax loss of $29,945.
 
NOTE 5. INVESTMENT PARTNERSHIP
 
    Three of the Company's subsidiaries have contributed assets to, and
participate in, a limited partnership. One subsidiary serves as general partner,
and all other partners hold limited partnership interests. The partnership,
which is a separate and distinct legal entity, is in the business of licensing
database assets and computer software. In the second quarter of 1997,
third-party investors contributed $100,000 to the partnership in exchange for
limited partnership interests. For financial reporting purposes, the assets,
liabilities, results of operations and cash flows of the partnership are
included in the Company's consolidated financial statements. The third-parties'
investments in this partnership are reflected in minority interests.
 
NOTE 6. NON-RECURRING CHARGES
 
    In the fourth quarter of 1995, the Company recorded within operating costs a
charge of $90,070. This charge primarily reflected an impairment loss in
connection with the adoption of the provisions of SFAS No. 121, "Accounting for
the Impairment of Long-Lived Assets and for Long-Lived Assets to be Disposed Of"
($40,570), the write-off of certain computer software ($20,300), a provision for
postemployment benefits ($7,400) under the Company's severance plan and an
accrual for contractual obligations that have no future economic benefits
($21,800).
 
                                      F-11
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 6. NON-RECURRING CHARGES (CONTINUED)
    SFAS No. 121 requires that long-lived assets and certain intangibles be
reviewed for impairment whenever events or changes in circumstances indicate
that the carrying amount of an asset may not be recoverable. In connection with
this review, the Company recorded an impairment loss of $40,570 reflecting the
revaluation of certain fixed assets, administrative and production systems and
other intangibles that were replaced or no longer used. In addition, the Company
recognized a charge of $20,300, principally related to the write-off of certain
computer software product lines at Pilot.
 
    The provision for postemployment benefits of $7,400 represented the cost of
workforce reductions. The accrual for contractual obligations that have no
future economic benefits of $21,800 related to the acquisition of certain
information and other services that were no longer used by the Company.
 
    This 1995 non-recurring charge evolved from D&B's annual budget and
strategic planning process, which included a review of D&B's underlying cost
structure, products and services and assets used in the business. Based upon
such analysis, management, having the authority to approve such business
decisions, committed in December 1995 to a plan to discontinue certain product
lines and dispose of certain other assets, resulting in the charge. These
decisions were not reversed or modified as a result of D&B's reorganization plan
relating to the D&B Distribution, which was reviewed and, subject to certain
conditions, approved by the Board of Directors of D&B on January 9, 1996.
 
NOTE 7. RESTRUCTURING
 
    In 1995, the Company recorded a $12,800 restructuring provision primarily to
write-off software for product lines that were discontinued at Sales
Technologies. All restructuring actions were completed in 1996.
 
<TABLE>
<CAPTION>
                                                           DECEMBER 31,              DECEMBER 31,
CATEGORY                                                       1995      CASH ITEMS      1996
- ---------------------------------------------------------  ------------  ----------  ------------
<S>                                                        <C>           <C>         <C>
Real Estate Cost Reductions..............................   $    1,059   $   (1,059)  $   --
Discontinued Production and Data Collection Systems and
 Products................................................        4,400       (4,400)
Other....................................................        6,056       (6,056)      --
                                                           ------------  ----------  ------------
Total....................................................   $   11,515   $  (11,515)  $   --
                                                           ------------  ----------  ------------
                                                           ------------  ----------  ------------
</TABLE>
 
NOTE 8. ACQUISITIONS
 
    In 1996 and 1995, the Company acquired various companies in separate
transactions that were accounted for as purchases.
 
    The aggregate cash purchase price of such acquisitions totaled $24,386 in
1996. The largest acquisition during 1996 was Gartner's acquisition of J3
Learning Corporation ("J3"), a leading provider of software educational
materials for corporate and individual training. Gartner acquired all of the
outstanding shares of J3 for consideration of $8,000 in cash, approximately
$35,400 in Gartner Group Class A Common Stock, and options to purchase Gartner
Group Class A Common Stock, which had a value of $1,300. Operating costs and
selling and administrative expenses in 1996 include a one-time acquisition
related charge of $33,233 for in-process research and development costs
associated with J3.
 
                                      F-12
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 8. ACQUISITIONS (CONTINUED)
    The aggregate purchase price of such acquisitions totaled $10,916 in 1995.
 
    The results of operations of all purchases are included in the Consolidated
Statements of Income from the date of acquisition. Had the acquisitions made in
1995 and 1996 been consummated on January 1 of the year preceding the year of
acquisition, the results of these acquired operations would not have had a
significant impact on the Company's consolidated results of operations for any
of the years presented.
 
NOTE 9. MARKETABLE SECURITIES AND OTHER INVESTMENTS
 
    Amounts included below are classified in the consolidated statements of
financial position as marketable securities and other investments. Cash
equivalents have been excluded from these disclosures.
 
<TABLE>
<CAPTION>
                                                                                        DECEMBER 31,
                                                                         ------------------------------------------
                                                                                 1997                  1996
                                                                         --------------------  --------------------
                                                                                      FAIR                  FAIR
                                                                           COST       VALUE      COST       VALUE
                                                                         ---------  ---------  ---------  ---------
<S>                                                                      <C>        <C>        <C>        <C>
Debt Securities of States and Other Subdivisions of the U.S.
  Government...........................................................     --         --      $  23,317  $  23,317
Equity Securities......................................................  $   3,491  $  48,463      4,357     58,320
                                                                         ---------  ---------  ---------  ---------
Total..................................................................  $   3,491  $  48,463  $  27,674  $  81,637
                                                                         ---------  ---------  ---------  ---------
                                                                         ---------  ---------  ---------  ---------
</TABLE>
 
NOTE 10. FINANCIAL INSTRUMENTS
 
FOREIGN EXCHANGE RISK MANAGEMENT
 
    The Company transacts business in virtually every part of the world and is
subject to risks associated with changing foreign exchange rates. The Company's
objective is to reduce earnings and cash flow volatility associated with foreign
exchange rate changes to allow management to focus its attention on its core
business activities. Accordingly, the Company enters into various contracts
which change in value as foreign exchange rates change to protect the value of a
portion of committed and anticipated foreign currency revenues and
non-functional currency assets and liabilities. By policy, the Company maintains
hedge coverage between minimum and maximum percentages of its anticipated
foreign exchange exposures over the next year. The gains and losses on these
hedges offset changes in the value of the related exposures.
 
    It is the Company's policy to enter into foreign currency transactions only
to the extent necessary to meet its objectives as stated above. The Company does
not enter into foreign currency transactions for speculative purposes.
 
    The Company uses forward contracts and purchased currency options to hedge
committed and anticipated foreign currency denominated revenues, respectively.
The principal currencies hedged are the Japanese yen, Swiss franc, German mark
and Italian lira. The Company also uses forward contracts to hedge
non-functional currency assets and liabilities.
 
    At December 31, 1997, the notional amounts of the Company's risk management
contracts were $212,000 and all contracts will mature in 1998.
 
                                      F-13
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 10. FINANCIAL INSTRUMENTS (CONTINUED)
    Gains and losses on contracts hedging anticipated and committed foreign
currency revenues are deferred until such revenues are recognized, and offset
changes in the value of such revenues. At December 31, 1997, the Company had
unrealized deferred gains of $2,768 related to foreign currency hedge
transactions. Deferred amounts to be recognized can change with market
conditions and will substantially be offset by changes in the value of the
related hedged transactions. The impact of foreign exchange risk management
activities on operating income in 1997 was a net gain of $15,617. Gains and
losses on contracts hedging non-functional currency assets and liabilities are
not deferred and are included in current income in other income/expense--net.
 
FAIR VALUE OF FINANCIAL INSTRUMENTS
 
    At December 31, 1997, the Company's financial instruments included cash,
cash equivalents, receivables, accounts payable and foreign exchange risk
management contracts. At December 31, 1997, the fair values of cash, cash
equivalents, receivables and accounts payable approximated carrying values due
to the short-term nature of these instruments. The estimated fair values of the
foreign exchange risk management contracts were determined based on quoted
market prices.
 
CREDIT CONCENTRATIONS
 
    The Company continually monitors its positions with, and the credit quality
of, the financial institutions which are counterparties to its financial
instruments and does not anticipate non-performance by the counterparties. The
Company would not realize a material loss as of December 31, 1997 in the event
of non-performance by any one counterparty. The Company enters into transactions
only with financial institution counterparties which have a credit rating of A
or better. In addition, the Company limits the amount of credit exposure with
any one institution.
 
    IMS maintains accounts receivable balances ($228,284 and $237,279 at
December 31, 1997 and 1996, respectively), principally from customers in the
pharmaceutical industry. The Company's trade receivables do not represent
significant concentrations of credit risk at December 31, 1997 due to the high
quality of its customers and their dispersion across many geographic areas.
 
NOTE 11. PENSION AND POSTRETIREMENT BENEFITS
 
    PENSION PLANS.  The Company has a defined benefit pension plan covering all
employees in the United States in certain of the Company's businesses. The plan
is a cash balance pension plan under which 6% of creditable compensation plus
interest is credited to eligible employee retirement accounts on a monthly
basis. At the time of retirement, the vested employee's account balance is
actuarially converted into an annuity. Pension costs are determined actuarially
and are funded to the extent allowable under the Internal Revenue Code.
Supplemental plans in the United States are maintained to provide retirement
benefits in excess of levels allowed by ERISA. The Company's non-U.S.
subsidiaries provide retirement benefits for employees consistent with local
practices, primarily using defined benefit or termination indemnity plans.
 
                                      F-14
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 11. PENSION AND POSTRETIREMENT BENEFITS (CONTINUED)
    Consolidated pension costs are summarized as follows:
 
<TABLE>
<CAPTION>
                                                                     1997       1996       1995
                                                                   ---------  ---------  ---------
<S>                                                                <C>        <C>        <C>
U.S. Plans--D&B Allocation.......................................  $  --      $   2,230  $   1,241
U.S. Plans--Post Distribution....................................      2,145        291     --
Non-U.S. Plans...................................................      4,837      4,364      4,078
                                                                   ---------  ---------  ---------
Total Pension Cost...............................................  $   6,982  $   6,885  $   5,319
                                                                   ---------  ---------  ---------
                                                                   ---------  ---------  ---------
</TABLE>
 
    The components of net periodic pension cost for 1997 (1996 and 1995 are
unavailable) are summarized as follows:
 
<TABLE>
<CAPTION>
                                                                                       1997
                                                                                    ----------
<S>                                                                                 <C>
Service Cost......................................................................  $    9,959
Interest Cost.....................................................................      10,503
Actual Return on Plan Assets......................................................     (20,357)
Net Amortization and Deferral.....................................................       6,877
                                                                                    ----------
Net Periodic Pension Cost.........................................................  $    6,982
                                                                                    ----------
                                                                                    ----------
</TABLE>
 
    In addition, during 1996 the Company recognized a pension curtailment gain
of $1,895 relating to a reduced level of participation in the Company's
supplemental plan and workforce reductions.
 
The status of all defined benefit pension plans at December 31, 1997 and 1996 is
as follows:
 
<TABLE>
<CAPTION>
                                                                           FUNDED                  UNFUNDED
                                                                  ------------------------  ----------------------
                                                                     1997         1996         1997        1996
                                                                  -----------  -----------  ----------  ----------
<S>                                                               <C>          <C>          <C>         <C>
Fair Value of Plan Assets.......................................  $   157,643  $   151,724  $   --      $   --
                                                                  -----------  -----------  ----------  ----------
Actuarial Present Value of Accumulated Benefit Obligation:
  Vested........................................................     (112,663)    (120,602)     (5,607)     (4,857)
  Nonvested.....................................................       (1,900)      (1,611)     --            (296)
                                                                  -----------  -----------  ----------  ----------
Accumulated Benefit Obligation..................................     (114,563)    (122,213)     (5,607)     (5,153)
Effect of Projected Future Salary Increases.....................      (11,650)     (12,088)     (9,534)     (7,100)
                                                                  -----------  -----------  ----------  ----------
Projected Benefit Obligation....................................     (126,213)    (134,301)    (15,141)    (12,253)
                                                                  -----------  -----------  ----------  ----------
Plan Assets in Excess of (Less Than) Projected Benefit
  Obligation....................................................       31,430       17,423     (15,141)    (12,253)
Unrecognized Net (Gain) Loss....................................      (11,306)       3,652       3,135         478
Unrecognized Prior Service Cost (Credit)........................       (6,476)      (6,547)        639         833
Unrecognized Net Transition (Asset) Obligation..................       (1,818)      (1,226)         49          49
Adjustment to Recognize Minimum Liability.......................      --           --           --            (123)
                                                                  -----------  -----------  ----------  ----------
Prepaid (Accrued) Pension Cost..................................  $    11,830  $    13,302  $  (11,318) $  (11,016)
                                                                  -----------  -----------  ----------  ----------
                                                                  -----------  -----------  ----------  ----------
</TABLE>
 
                                      F-15
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 11. PENSION AND POSTRETIREMENT BENEFITS (CONTINUED)
    The weighted average expected long-term rate of return on pension plan
assets was 9.28%, 9.31% and 9.82% for 1997, 1996 and 1995, respectively. At
December 31, 1997 and 1996, the projected benefit obligation was determined
using weighted average discount rates of 7.56% and 7.59%, respectively, and
weighted average rates of increase in future compensation levels of 4.66% and
4.59%, respectively. Plan assets are invested in diversified portfolios that
consist primarily of equity and debt securities.
 
    Certain employees of the Company in the United States also are eligible to
participate in the Company-sponsored defined contribution plan. The Company's
businesses make a matching contribution of up to 50% of the employee's
contribution based on specified limits of the employee's salary. The Company's
expense related to this plan was $4,666, $4,075 and $3,178 for the years 1997,
1996 and 1995, respectively.
 
    POSTRETIREMENT BENEFITS.  In addition to providing pension benefits, the
Company provides various healthcare and life insurance benefits for retired
employees. Employees at certain businesses of the Company in the United States
become eligible for these benefits if they reach normal retirement age while
working for the Company. Certain of the Company's subsidiaries outside the
United States have postretirement benefit plans, although most participants are
covered by government-sponsored or administered plans. The cost of
Company-sponsored postretirement benefit plans outside the U.S. is not
significant.
 
    The Company has recorded postretirement benefits costs totaling $1,200,
$2,619 and $3,447 for the years 1997, 1996 and 1995, respectively.
 
    The status of postretirement benefit plans other than pensions at December
31, 1997 and 1996 is as follows:
 
<TABLE>
<CAPTION>
                                                                           1997        1996
                                                                        ----------  ----------
<S>                                                                     <C>         <C>
Accumulated Postretirement Benefit Obligation:
Active Employees--Eligible............................................  $   (8,110) $   (8,350)
Active Employees--Not Yet Eligible....................................      (6,830)     (6,530)
                                                                        ----------  ----------
Accumulated Postretirement Benefit Obligation.........................     (14,940)    (14,880)
Unrecognized Net Loss.................................................         540         300
Unrecognized Prior Service Credit.....................................      (2,110)       (850)
                                                                        ----------  ----------
Accrued Postretirement Benefit Cost...................................  $  (16,510) $  (15,430)
                                                                        ----------  ----------
                                                                        ----------  ----------
</TABLE>
 
    At December 31, 1997 and 1996 the accumulated postretirement benefit
obligation was determined using a discount rate of 7.0% and 7.5%, respectively.
The assumed rate of future increases in per capita cost of covered healthcare
benefits is 7.3% in 1998, decreasing gradually to 5.0% for the year 2021 and
remaining constant thereafter. Increasing the assumed healthcare cost trend rate
by one percentage point in each year would increase the accumulated
postretirement benefit obligation by $2,007 and would increase annual aggregate
service and interest costs by $257.
 
NOTE 12. EMPLOYEE STOCK PLANS
 
    The Company has a Key Employees Stock Incentive Plan which provides for the
grant of stock options and restricted stock to eligible employees. In addition
it provides an opportunity for the purchase of stock
 
                                      F-16
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 12. EMPLOYEE STOCK PLANS (CONTINUED)
options with a prepayment equal to ten percent of the exercise price, with the
remaining payment due when the options are exercised. All options have a life of
ten years, vest proportionally over six years and have an exercise price equal
to the fair market value of the common stock on the grant date.
 
    The Company adopted an Employee Stock Purchase Plan in 1997 which allows
eligible employees to purchase a limited amount of common stock at the end of
each quarter at a price equal to the lesser of 90% of fair market value on (a)
the first trading day of the quarter, or (b) the last trading day of the
quarter. Fair market value is defined as the average of the high and low prices
of the shares on the relevant day.
 
    Gartner has several stock option and stock purchase plans. The exercise
price of options granted under the plans is equal to the fair market value at
the date of grant of Gartner stock. Options outstanding and exercisable were
15,496,068 and 6,670,813, respectively, at December 31, 1997, at prices ranging
from $0.02 to $35.38 per share.
 
    In July 1997, CTS adopted a Key Employees Stock Option Plan which provides
for the grant of stock options to eligible employees. Options granted under this
plan may not be granted at an exercise price less than fair market value of the
underlying shares on the date of grant. All such options become exercisable in
April 2006 with certain acceleration provisions of the vesting period to 25% per
year over four years from the grant date should an initial public offering or
change in control occur. At December 31, 1997, 800,500 options were outstanding
at a weighted average exercise price of $2.50 per share. None were exercisable.
 
    CTS also has a Key Employees' Restricted Stock Purchase Plan which allows
eligible employees to purchase a limited amount of restricted common stock at
the time of grant at a price equal to the fair market value on the effective
date of the award. At December 31, 1997, 175,000 shares have been purchased at
an average exercise price of $2.50. The restrictions lapse should an initial
public offering or change in control occur.
 
    In October 1995, FASB issued SFAS No. 123, "Accounting for Stock-Based
Compensation", which requires that companies with stock-based compensation plans
either recognize compensation expense based on the fair value of options granted
or continue to apply the existing accounting rules and disclose pro forma net
income and earnings per share assuming the fair value method had been applied.
The Company has chosen to continue applying Accounting Principles Board Opinion
No. 25 and related interpretations in accounting for its plans. Accordingly, no
compensation cost has been recognized for the fixed stock option plans. Had
compensation cost for the Company's stock-based compensation plans been
determined based on the fair value at the grant dates for awards under those
plans, consistent with the
 
                                      F-17
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 12. EMPLOYEE STOCK PLANS (CONTINUED)
method of SFAS No. 123, the Company's net income and earnings per share would
have been reduced to the pro forma amounts indicated below:
 
<TABLE>
<CAPTION>
                                                                                    YEARS ENDED DECEMBER 31,
                                                                                ---------------------------------
                                                                                   1997        1996       1995
                                                                                ----------  ----------  ---------
<S>                     <C>                                                     <C>         <C>         <C>
Net Income              As reported...........................................  $  312,350  $  195,451  $  88,881
                        Pro forma.............................................  $  284,634  $  188,705  $  88,120
Earnings Per Share:
  Basic                 As reported...........................................  $     1.89  $     1.15  $     .52
                        Pro forma.............................................  $     1.72  $     1.11  $     .52
  Diluted               As reported...........................................  $     1.86  $     1.15  $     .52
                        Pro forma.............................................  $     1.70  $     1.11  $     .52
</TABLE>
 
- ------------------------
 
Note: The pro forma disclosures shown above are not representative of the
effects on net income and earnings per share in future years.
 
    The fair value of the Company's stock options used to compute pro forma net
income and earnings per share disclosures is the estimated present value at
grant date using the Black-Scholes option pricing model. The following
weighted-average assumptions were used for 1997, 1996 and 1995: dividend yield
of 0.3%; expected volatility of 25%; a risk-free interest rate of 5.9%; and an
expected term of 4.5 years. The weighted average fair value of the Company's
stock options granted in 1997, 1996 and 1995 are $13.12, $9.76 and $7.61,
respectively.
 
    The fair value of Gartner stock options used to compute the Company's pro
forma net income and earnings per share disclosures was computed in the same
manner with the following weighted-average assumptions for 1997, 1996 and 1995:
dividend yield of 0%; expected volatility of 40%; a risk-free interest rate of
6.0%; and an expected term of 3.5 years. The weighted average fair value of
Gartner stock options granted in 1997, 1996 and 1995 are $10.12, $11.80 and
$5.82, respectively.
 
                                      F-18
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 12. EMPLOYEE STOCK PLANS (CONTINUED)
 
    Immediately following the D&B Distribution, outstanding awards under the D&B
Key Employees Stock Option Plans held by company employees were cancelled and
replaced by substitute awards under the Company's Key Employees Stock Incentive
Plan. The substitute awards had the same ratio of the exercise price per option
to the market value per share, the same aggregate difference between market
value and exercise price and the same vesting provisions, option periods and
other terms and conditions as the options they replaced.
 
    At December 31, 1997, outstanding options for Cognizant common stock held by
Company employees, including the substitute awards mentioned above, totaled
21,922,390, of which 4,386,181 had vested and were exercisable. The option
prices range from $22.99 to $44.47 per share and are exercisable over periods
ending no later than 2007. At December 31, 1996, outstanding options for
Cognizant common stock held by Company employees totaled 20,226,749, of which
2,168,714 had vested and were exercisable. The option prices ranged from $22.99
to $35.31 per share.
 
<TABLE>
<CAPTION>
                                                                                                  WEIGHTED AVERAGE
                                                                                       SHARES      EXERCISE PRICE
                                                                                    ------------  -----------------
<S>                                                                                 <C>           <C>
Options Outstanding,
 November 1, 1996.................................................................     3,340,778      $   31.13
Granted...........................................................................    14,209,500      $   33.37
Purchased.........................................................................     2,702,700      $   33.37
Exercised.........................................................................       (18,467)     $   30.17
Expired...........................................................................        (7,762)     $   33.75
                                                                                    ------------         ------
Options Outstanding,
 December 31, 1996................................................................    20,226,749      $   33.00
                                                                                    ------------         ------
Granted...........................................................................     3,878,237      $   42.35
Exercised.........................................................................      (856,693)     $   30.78
Expired...........................................................................    (1,325,903)     $   33.19
                                                                                    ------------         ------
Options Outstanding,
 December 31, 1997................................................................    21,922,390      $   34.75
                                                                                    ------------         ------
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                     WEIGHTED-AVERAGE
                                                    DECEMBER 31, 1997      -------------------------------------
                                                 ------------------------   REMAINING    OPTION EXERCISE PRICES
RANGE OF                                            NUMBER       NUMBER    CONTRACTUAL  ------------------------
EXERCISE PRICES                                  OUTSTANDING   EXERCISABLE    LIFE      OUTSTANDING  EXERCISABLE
- -----------------------------------------------  ------------  ----------  -----------  -----------  -----------
<S>                                              <C>           <C>         <C>          <C>          <C>
$40.00 - $44.47................................     3,095,250           0   9.8 years    $   44.25    $   44.25
$37.56 - $38.88................................       338,000           0   9.5 years    $   37.58    $   37.58
$30.31 - $35.31................................    17,285,856   3,368,490   7.7 years    $   33.43    $   33.50
$22.99 - $29.91................................     1,203,284   1,017,691   4.5 years    $   28.07    $   27.75
                                                 ------------  ----------
                                                   21,922,390   4,386,181
                                                 ------------  ----------
                                                 ------------  ----------
</TABLE>
 
                                      F-19
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 13. INCOME TAXES
 
Income before provision for income taxes consisted of:
 
<TABLE>
<CAPTION>
                                                                                  1997        1996        1995
                                                                               ----------  ----------  ----------
<S>                                                                            <C>         <C>         <C>
U.S..........................................................................  $  230,717  $  162,128  $   43,495
Non-U.S......................................................................     199,518     186,893     119,062
                                                                               ----------  ----------  ----------
                                                                               $  430,235  $  349,021  $  162,557
                                                                               ----------  ----------  ----------
                                                                               ----------  ----------  ----------
</TABLE>
 
The provision (benefit) for income taxes consisted of:
 
<TABLE>
<CAPTION>
                                                                                   1997        1996        1995
                                                                                ----------  ----------  ----------
<S>                                                                             <C>         <C>         <C>
U.S. Federal and State:
Current.......................................................................  $   55,647  $   53,489  $   57,596
Deferred......................................................................      (8,437)     31,178     (23,871)
                                                                                ----------  ----------  ----------
                                                                                    47,210      84,667      33,725
                                                                                ----------  ----------  ----------
 
Non-U.S.:
Current.......................................................................      57,949      61,880      33,632
Deferred......................................................................      12,726       7,023       6,319
                                                                                ----------  ----------  ----------
                                                                                    70,675      68,903      39,951
                                                                                ----------  ----------  ----------
Total.........................................................................  $  117,885  $  153,570  $   73,676
                                                                                ----------  ----------  ----------
                                                                                ----------  ----------  ----------
</TABLE>
 
    The following table summarizes the significant differences between the U.S.
Federal statutory taxes and the Company's provision for income taxes for
consolidated financial statement purposes.
 
<TABLE>
<CAPTION>
                                                                                    1997        1996       1995
                                                                                 ----------  ----------  ---------
<S>                                                                              <C>         <C>         <C>
Tax Expense at Statutory Rate..................................................  $  150,582  $  122,157  $  56,895
State and Local Income Taxes, net of Federal Tax Benefit.......................      13,704      12,729     13,079
Non-U.S. Taxes.................................................................        (623)      2,939     (3,684)
Purchased In-Process R&D Costs.................................................      --          11,632     --
Goodwill.......................................................................       1,396       3,709      4,457
Amortization of Intangibles....................................................     (48,612)     --         --
Other..........................................................................       1,438         404      2,929
                                                                                 ----------  ----------  ---------
Total Taxes....................................................................  $  117,885  $  153,570  $  73,676
                                                                                 ----------  ----------  ---------
                                                                                 ----------  ----------  ---------
</TABLE>
 
                                      F-20
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 13. INCOME TAXES (CONTINUED)
    The Company's deferred tax assets (liabilities) are comprised of the
following at December 31:
 
<TABLE>
<CAPTION>
                                                                                             1997         1996
                                                                                          -----------  -----------
<S>                                                                                       <C>          <C>
Deferred Tax Assets:
  Operating Losses......................................................................  $    23,236  $    34,225
  Intangibles...........................................................................       31,552      --
  Postretirement Benefits...............................................................        6,009        5,274
  Non-Recurring Charges.................................................................        4,073        5,440
  Postemployment Benefits...............................................................        3,923        4,969
  Bad Debts.............................................................................        1,599        2,488
  Other.................................................................................        4,706        9,006
                                                                                          -----------  -----------
                                                                                               75,098       61,402
Valuation Allowance.....................................................................      (21,826)     (29,784)
                                                                                          -----------  -----------
                                                                                               53,272       31,618
                                                                                          -----------  -----------
Deferred Tax Liabilities:
  Intangibles...........................................................................      (66,322)     (67,818)
  Deferred Revenue......................................................................      (37,274)     (16,966)
  Marketable Securities.................................................................      (20,522)     (17,268)
  Depreciation..........................................................................      (17,522)     (12,223)
  Other.................................................................................      (14,535)      (7,442)
                                                                                          -----------  -----------
                                                                                             (156,175)    (121,717)
                                                                                          -----------  -----------
Net Deferred Tax Liability..............................................................  $  (102,903) $   (90,099)
                                                                                          -----------  -----------
                                                                                          -----------  -----------
</TABLE>
 
    The 1997 net deferred tax liability consists of a non-current deferred tax
liability of $113,749, offset by a current deferred tax asset of $10,846
included in Other Current Assets. (See Note 18 to the Cognizant Consolidated
Financial Statements.)
 
    The Company has established a valuation allowance attributable to deferred
tax assets in certain U.S. state and non-U.S. tax jurisdictions where, based on
available evidence, it is more likely than not that such assets will not be
realized.
 
    Undistributed earnings of non-U.S. subsidiaries aggregated approximately
$479,960 at December 31, 1997. Deferred tax liabilities have not been recognized
for these undistributed earnings because it is the Company's intention to
permanently reinvest such undistributed earnings outside the U.S. If such
earnings are repatriated in the future, or are no longer deemed to be
permanently reinvested, applicable taxes will be provided for on such amounts.
It is not currently practicable to determine the amount of applicable taxes.
 
NOTE 14. COMMITMENTS
 
    Certain of the Company's operations are conducted from leased facilities,
which are under operating leases. Rental expense under real estate operating
leases for the years 1997, 1996 and 1995 was $28,298, $37,805, and $34,997,
respectively. The totals include $387 and $446 in 1996, and 1995 respectively,
for facilities usage charged by D&B or an affiliate. The minimum annual rental
expense for real estate
 
                                      F-21
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 14. COMMITMENTS (CONTINUED)
operating leases that have remaining noncancelable lease terms in excess of one
year, net of sublease rentals, at December 31, 1997 was: 1998--$27,896;
1999--$26,849; 2000--$25,901; 2001--$24,522; 2002-- $18,639 and an aggregate of
$24,411 thereafter.
 
    The Company also leases or participates in leases of certain computer and
other equipment under operating leases. These leases are frequently renegotiated
or otherwise changed as advancements in computer technology produce
opportunities to lower costs and improve performance. Rental expense under
computer and other equipment leases was $30,286, $25,304, and $21,864 for 1997,
1996 and 1995, respectively. At December 31, 1997, the minimum annual rental
expense for computer and other equipment under operating leases that have
remaining noncancelable lease terms in excess of one year was: 1998--$27,069;
1999--$24,977; 2000--$13,425; 2001--$6,836 and 2002--$5,898.
 
    The Company has agreements with various third parties to purchase certain
data processing and telecommunications services, extending beyond one year. At
December 31, 1997, the purchases covered by these agreements aggregated:
1998--$13,578; 1999--$13,638; and 2000--$5,880.
 
NOTE 15. OTHER TRANSACTIONS WITH AFFILIATES
 
    Prior to the D&B Distribution, D&B provided certain centralized services
(see Note 1 to the Cognizant Consolidated Financial Statements) to the Company.
Expenses related to these services were allocated to the Company based on
utilization of specific services or, where not estimable, based on assets
employed by the Company in proportion to D&B's total assets. Management believes
these allocation methods are reasonable. These allocations (including data
service charges beginning in 1995) were $107,200 and $116,900 in 1996 and 1995,
respectively, and are included in operating costs and selling and administrative
expenses in the Consolidated Statements of Income. Amounts due to D&B for these
expenses are included in Divisional Equity.
 
    Net transfers to or from D&B, included in Divisional Equity, include
advances and loans from affiliates, net cash transfers to or from D&B,
third-party liabilities paid on behalf of the Company by D&B, amounts due to or
from D&B for services and other charges, and income taxes paid on behalf of the
Company by D&B. No interest has been charged on these transactions. The weighted
average balance due from D&B was $466,938, and $452,693 for 1996 and 1995,
respectively.
 
    The activity in the net transfers from (to) D&B account for the periods
through the D&B Distribution Date included in Divisional Equity in the Cognizant
Consolidated Statements of Shareholders' Equity is summarized as follows:
 
<TABLE>
<CAPTION>
                                                                                        TEN MONTHS
                                                                                           ENDED      YEAR ENDED
                                                                                        OCTOBER 31,  DECEMBER 31,
                                                                                           1996          1995
                                                                                        -----------  ------------
<S>                                                                                     <C>          <C>
D&B Services and Other Charges........................................................    $ 111,806     $ 121,673
Loans and Advances--Net...............................................................      137,639        44,917
U.S. Income Taxes.....................................................................       35,434        57,596
Cash Transfers--Net...................................................................     (239,999)     (337,237)
                                                                                        -----------  ------------
Net Transfers from (to) D&B...........................................................     $ 44,880     $(113,051)
                                                                                        -----------  ------------
                                                                                        -----------  ------------
</TABLE>
 
                                      F-22
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 15. OTHER TRANSACTIONS WITH AFFILIATES (CONTINUED)
    In connection with the D&B Distribution, the Company received 800,000 shares
of new D&B common stock and 266,666 shares of ACNielsen Corporation
("ACNielsen") common stock. In December 1996 the Company sold such shares to D&B
and ACNielsen, at fair market value, for $18,560 and $3,967, respectively. In
addition, the Company assumed $69,000 of liabilities (included in Other
Liabilities) which are subject to adjustment in accordance with the D&B
Distribution Agreement, related to certain prior business transactions, and
$50,000 of short-term debt, which was repaid in December 1996.
 
    For purposes of governing certain of the ongoing relationships between the
Company, D&B and ACNielsen after the D&B Distribution and to provide for an
orderly transition, the Company, D&B and ACNielsen entered into various
agreements including a Distribution Agreement, Tax Allocation Agreement,
Employee Benefits Agreement, Indemnity and Joint Defense Agreement, Television
Audience Measurement Master Agreement, Intellectual Property Agreement, Shared
Transaction Services Agreement, Data Services Agreement and Transition Services
Agreement. Among other things, the agreements set forth principles to be applied
in allocating certain D&B Distribution-related costs and specify portions of
contingent liabilities to be shared if certain amounts are exceeded.
 
NOTE 16. CAPITAL STOCK
 
    On February 18, 1997 the Company announced that its board of directors had
authorized a systematic stock repurchase program to buy up to 8,500,000 shares
of the Company's outstanding common stock. The stock purchases are held in
Treasury and reissued upon exercise of employee stock options. This program was
completed on September 5, 1997 at a total cost of $299,737.
 
    On October 21, 1997 the Company announced that its board of directors had
authorized a second systematic stock repurchase program to buy up to 10,000,000
shares of the Company's outstanding common stock. A portion of this program is
intended to cover option exercises. Through December 31, 1997, 574,600 shares
have been acquired at a total cost of $22,756.
 
    Under a Shareholder Rights Plan adopted by the Board of Directors, each
certificate for a share of the Company's common stock also represents one
Preferred Share Purchase Right (a "Right"). In the event a person or group (an
"Acquiring Person") acquires beneficial ownership of, or commences or announces
an intention to make a tender offer for more than 15% of the outstanding shares
of common stock, each Right entitles the holder to purchase one one-thousandth
of a share of Series A Junior Participating Preferred Stock at $210 per each one
one-thousandth of a share (the "Purchase Price"). In the event a person or group
becomes an Acquiring Person, or the Company is acquired in a merger or other
business combination or 50% or more of its assets or earning power are sold,
each holder of a Right (other than an Acquiring Person) has the right to receive
common stock of the Company or the entity that engaged in such transaction, as
applicable, which has a market value of two times the Purchase Price. The
Rights, which do not have voting rights and are subject to adjustment in certain
circumstances, expire on October 23, 2006 and are redeemable by the Company at a
price of $.01 per Right under certain circumstances.
 
NOTE 17. LITIGATION
 
    The Company and its subsidiaries are involved in legal proceedings and
litigation arising in the ordinary course of business. In the opinion of
management, the outcome of such current legal proceedings
 
                                      F-23
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 17. LITIGATION (CONTINUED)
and litigation, if decided adversely, could have a material effect on quarterly
or annual operating results or cash flows when resolved in a future period.
However, in the opinion of management, these matters will not materially affect
the Company's consolidated financial position.
 
    In addition, on July 29, 1996, Information Resources, Inc. ("IRI") filed a
complaint in the United States District Court for the Southern District of New
York, naming as defendants D&B, A.C. Nielsen Company and IMS (the"IRI Action").
 
    The complaint alleges various violations of the United States antitrust
laws, including alleged violations of Sections 1 and 2 of the Sherman Act. The
complaint also alleges a claim of tortious interference with a contract and a
claim of tortious interference with a prospective business relationship. These
latter claims relate to the acquisition by defendants of Survey Research Group
Limited ("SRG"). IRI alleges that SRG violated an alleged agreement with IRI
when it agreed to be acquired by defendants and that the defendants induced SRG
to breach that agreement.
 
    IRI's complaint alleges damages in excess of $350,000, which amount IRI has
asked to be trebled under the antitrust laws. IRI also seeks punitive damages in
an unspecified amount.
 
    On October 15, 1996, defendants moved for an order dismissing all claims in
the complaint. On May 6, 1997 the United States District Court for the Southern
District of New York issued a decision dismissing IRI's claim of attempted
monopolization in the United States, with leave to replead within sixty days.
The Court denied defendants' motion with respect to the remaining claims in the
complaint. On June 3, 1997, defendants filed an answer denying the material
allegations in IRI's complaint, and A.C. Nielsen Company filed a counterclaim
alleging that IRI has made false and misleading statements about its services
and commercial activities. On July 7, 1997, IRI filed an amended and restated
complaint repleading its alleged claim of attempted monopolization in the United
States and realleging its other claims. On August 18, 1997, defendants moved for
an order dismissing the amended claims. On December 1, 1997, the court denied
the motion and, on December 16, 1997, defendants filed a supplemental answer
denying the remaining material allegations of the amended complaint.
 
    In connection with the IRI Action, D&B, ACNielsen Corporation ("ACNielsen")
(the parent company of A.C. Nielsen Company) and the Company have entered into
an Indemnity and Joint Defense Agreement (the "Indemnity and Joint Defense
Agreement") pursuant to which they agree (i) to certain arrangements allocating
potential liabilities ("IRI Liabilities") that may arise out of or in connection
with the IRI Action, and (ii) to conduct a joint defense of such action. In
particular, the Indemnity and Joint Defense Agreement provides that ACNielsen
will assume exclusive liability for IRI Liabilities up to a maximum amount to be
calculated at the time such liabilities, if any, become payable (the "ACN
Maximum Amount"), and that the Company and D&B will share liability equally for
any amounts in excess of the ACN Maximum Amount. The ACN Maximum Amount will be
determined by an investment banking firm as the maximum amount which ACNielsen
is able to pay after giving effect to (i) any plan submitted by such investment
bank which is designed to maximize the claims paying ability of ACNielsen
without impairing the investment banking firm's ability to deliver a viability
opinion (but which will not require any action requiring shareholder approval),
and (ii) payment of related fees and expenses. For these purposes, financial
viability means the ability of ACNielsen, after giving effect to such plan, the
payment of related fees and expenses and the payment of the ACN Maximum Amount,
to pay its debts as they become due
 
                                      F-24
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 17. LITIGATION (CONTINUED)
and to finance the current and anticipated operating and capital requirements of
its business, as reconstituted by such plan, for two years from the date any
such plan is expected to be implemented.
 
    Management of the Company is unable to predict at this time the final
outcome of this matter or whether the resolution of this matter could materially
affect the Company's results of operations, cash flows or financial position.
 
NOTE 18. SUPPLEMENTAL FINANCIAL DATA
 
ACCOUNTS RECEIVABLE--NET:
 
<TABLE>
<CAPTION>
                                                                                               1997        1996
                                                                                            ----------  ----------
<S>                                                                                         <C>         <C>
Trade.....................................................................................  $  250,899  $  401,224
Less: Allowance for Doubtful Accounts.....................................................      (7,199)    (15,470)
Unbilled Receivables......................................................................      41,291      35,383
Other.....................................................................................      18,618      32,654
                                                                                            ----------  ----------
                                                                                            $  303,609  $  453,791
                                                                                            ----------  ----------
                                                                                            ----------  ----------
</TABLE>
 
OTHER CURRENT ASSETS:
 
<TABLE>
<CAPTION>
                                                                                               1997        1996
                                                                                             ---------  ----------
<S>                                                                                          <C>        <C>
Deferred Income Taxes......................................................................  $  10,846  $   14,975
Prepaid Expenses...........................................................................     35,059      48,531
Inventories................................................................................     26,463      26,369
Marketable Securities......................................................................     --          22,276
                                                                                             ---------  ----------
                                                                                             $  72,368  $  112,151
                                                                                             ---------  ----------
                                                                                             ---------  ----------
</TABLE>
 
PROPERTY, PLANT AND EQUIPMENT--NET, CARRIED AT COST, LESS ACCUMULATED
DEPRECIATION AND AMORTIZATION:
 
<TABLE>
<CAPTION>
                                                                                             1997         1996
                                                                                          -----------  -----------
<S>                                                                                       <C>          <C>
Buildings...............................................................................  $   113,845  $   118,122
Machinery and Equipment.................................................................      355,624      402,424
Less: Accumulated Depreciation..........................................................     (260,400)    (287,200)
Leasehold Improvements, less: Accumulated Amortization of $14,095 and $20,199...........       16,879       23,282
Land....................................................................................        7,635       12,260
                                                                                          -----------  -----------
                                                                                          $   233,583  $   268,888
                                                                                          -----------  -----------
                                                                                          -----------  -----------
</TABLE>
 
                                      F-25
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 18. SUPPLEMENTAL FINANCIAL DATA (CONTINUED)
COMPUTER SOFTWARE AND GOODWILL:
 
<TABLE>
<CAPTION>
                                                                                            COMPUTER
                                                                                            SOFTWARE    GOODWILL
                                                                                           ----------  -----------
<S>                                                                                        <C>         <C>
January 1, 1996..........................................................................  $  137,700  $   230,888
Additions at Cost........................................................................      49,395       60,484
Amortization.............................................................................     (39,802)     (17,094)
Other Deductions, Additions and Reclassifications........................................      (8,253)     (22,795)
                                                                                           ----------  -----------
December 31, 1996........................................................................     139,040      251,483
Additions at Cost........................................................................      58,707        1,554
Amortization.............................................................................     (42,426)      (8,810)
Other Deductions and Reclassifications (1)...............................................     (13,053)    (156,797)
                                                                                           ----------  -----------
DECEMBER 31, 1997........................................................................  $  142,268  $    87,430
                                                                                           ----------  -----------
                                                                                           ----------  -----------
</TABLE>
 
- ------------------------
 
(1) The significant decrease in Goodwill during 1997 is primarily related to the
    deconsolidation of Gartner.
 
    Accumulated amortization of Computer Software was $180,106 and $150,481 at
December 31, 1997 and 1996, respectively. Accumulated amortization of Goodwill
was $40,399 and $67,366 at December 31, 1997 and 1996, respectively.
 
ACCOUNTS AND NOTES PAYABLE:
 
<TABLE>
<CAPTION>
                                                                                                1997       1996
                                                                                              ---------  ---------
<S>                                                                                           <C>        <C>
Trade.......................................................................................  $  33,708  $  25,763
Taxes Other Than Income Taxes...............................................................     16,377     15,587
Notes.......................................................................................        458        464
Other.......................................................................................      8,253      5,109
                                                                                              ---------  ---------
                                                                                              $  58,796  $  46,923
                                                                                              ---------  ---------
                                                                                              ---------  ---------
</TABLE>
 
    The Company has short-term borrowing arrangements with several banks to
provide up to $39,400 of borrowings at December 31, 1997. None of these
arrangements had material commitment fees or compensating balance requirements.
 
ACCRUED AND OTHER CURRENT LIABILITIES:
 
<TABLE>
<CAPTION>
                                                                                               1997        1996
                                                                                            ----------  ----------
<S>                                                                                         <C>         <C>
Salaries, Wages, Bonuses and Other Compensation...........................................  $   68,717  $   78,676
Postemployment Benefits...................................................................       4,073       7,995
Other.....................................................................................     140,154     180,261
                                                                                            ----------  ----------
                                                                                            $  212,944  $  266,932
                                                                                            ----------  ----------
                                                                                            ----------  ----------
</TABLE>
 
                                      F-26
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 19. OPERATIONS BY BUSINESS SEGMENT
 
    In June 1997, the FASB issued SFAS No. 131 "Disclosures About Segments of an
Enterprise and Related Information". The Company has adopted SFAS No. 131 for
the year ended December 31, 1997, and as required has restated the prior years
in order to conform to the 1997 presentation. The Company, operating globally in
approximately 80 countries, delivers information, software and related services
principally through these strategic business segments referenced below.
 
    IMS is the leading global provider of market information and
decision-support services to the pharmaceutical and healthcare industries.
 
    Nielsen Media Research is the leading provider of television audience
measurement services, both nationally and locally, in the United States and
Canada.
 
    Gartner is the world's leading independent provider of research and analysis
on the computer hardware, software, communications and related information
technology (IT) industries. The company's subscribers receive research and
analysis about significant IT industry development and trends.
 
    Emerging Markets includes Erisco, the premier supplier of software-based
administrative and analytical solutions to the managed care industry; CTS, an
outsourcer of software applications and development services specializing in
Year 2000 conversion services; Super Systems Japan, a marketer of financial
application software products to the Japanese market; Enterprises, the Company's
venture capital unit, focused on investments in emerging healthcare businesses;
and Pilot, which was sold on July 31, 1997.
 
    The accounting policies of these reportable segments are the same as those
described for the consolidated entity. The Company evaluates the performance of
its operating segments based on revenue and income from operations.
 
<TABLE>
<CAPTION>
                                                                       NIELSEN                    EMERGING
YEAR ENDED DECEMBER 31, 1997                              IMS      MEDIA RESEARCH   GARTNER(1)   MARKETS(2)      TOTAL
- -----------------------------------------------------  ----------  ---------------  -----------  -----------  ------------
<S>                                                    <C>         <C>              <C>          <C>          <C>
OPERATING REVENUE....................................  $  980,521    $   358,594                  $  79,038   $  1,418,153
SEGMENT OPERATING INCOME.............................  $  265,351    $   107,732                  $  (9,752)  $    363,331
General Corporate Expenses...........................                                                               27,989
Interest Income (3)..................................       4,441                                       140          4,581
Non-Operating Income--Net Gartner Equity Income
  (1)................................................                                                               65,120
  Gains from Dispositions--Net.......................                                                 9,391          9,391
  Other--Net.........................................                                                               15,801
                                                       ----------  ---------------  -----------  -----------  ------------
Income Before Provision for Income Taxes.............                                                         $    430,235
Segment Depreciation and Amortization................  $   76,375    $    28,663                  $  11,139   $    116,177
Segment Capital Expenditures.........................  $   41,932    $    24,874                  $   4,304   $     71,110
IDENTIFIABLE ASSETS AT DECEMBER 31, 1997 (4).........  $  855,789    $   182,642                  $ 147,628   $  1,186,059
                                                       ----------  ---------------  -----------  -----------  ------------
                                                       ----------  ---------------  -----------  -----------  ------------
</TABLE>
 
                                      F-27
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
<TABLE>
<CAPTION>
                                                                       NIELSEN                    EMERGING
YEAR ENDED DECEMBER 31, 1996                              IMS      MEDIA RESEARCH   GARTNER(1)   MARKETS(2)      TOTAL
- -----------------------------------------------------  ----------  ---------------  -----------  -----------  ------------
<S>                                                    <C>         <C>              <C>          <C>          <C>
OPERATING REVENUE....................................  $  904,444    $   319,404     $ 424,382    $  82,366   $  1,730,596
SEGMENT OPERATING INCOME.............................  $  232,827    $    99,461     $  60,114    $ (12,903)  $    379,499
General Corporate Expenses...........................                                                               36,331
Interest Income (3)..................................       3,597                        3,982          221          7,800
Non-Operating Expense--Other--Net....................                                                                2,147
Gains from Dispositions--Net.........................                                                   200            200
                                                       ----------  ---------------  -----------  -----------  ------------
Income Before Provision for Income Taxes.............                                                         $    349,021
Segment Depreciation and Amortization................  $   80,313    $    25,229     $  15,934    $  12,181   $    133,657
Segment Capital Expenditures.........................  $   37,862    $    17,929     $  15,918    $   3,254   $     74,963
IDENTIFIABLE ASSETS AT DECEMBER 31, 1996 (4).........  $  756,966    $   152,307     $ 497,242    $ 206,825   $  1,613,340
                                                       ----------  ---------------  -----------  -----------  ------------
                                                       ----------  ---------------  -----------  -----------  ------------
YEAR ENDED DECEMBER 31, 1995
                                                       ----------  ---------------  -----------  -----------  ------------
OPERATING REVENUE....................................  $  835,442    $   288,652     $ 337,639    $  80,607   $  1,542,340
Restructuring Expense................................  $   12,800                                             $     12,800
SEGMENT OPERATING INCOME.............................  $   89,335    $    87,068     $  51,180    $ (18,366)  $    209,217
General Corporate Expenses...........................                                                               54,540
Interest Income (3)..................................       6,005                        2,761          330          9,096
Non-Operating Expense--Other--Net....................                                                               16,340
Gains from Dispositions--Net.........................       4,524                       10,600                      15,124
                                                       ----------  ---------------  -----------  -----------  ------------
Income Before Provision for Income Taxes.............                                                         $    162,557
Segment Depreciation and Amortization................  $   84,641    $    24,343     $  11,987    $  11,561   $    132,532
Segment Capital Expenditures.........................  $   29,935    $    13,508     $  19,657    $   2,532   $     65,632
IDENTIFIABLE ASSETS AT DECEMBER 31, 1995 (4).........  $  768,684    $   124,535     $ 355,088    $ 132,568   $  1,380,875
                                                       ----------  ---------------  -----------  -----------  ------------
                                                       ----------  ---------------  -----------  -----------  ------------
</TABLE>
 
- ------------------------------
 
(1) The Company maintained a majority interest in Gartner during 1995 and 1996
    and accordingly, reflected Gartner on a consolidated basis. During 1997, The
    Company's voting interest in Gartner fell below 50%. Gartner's results for
    1997 are therefore reflected as Gartner Equity Income and included in
    Non-Operating Income--Net.
 
(2) Intersegment sales of $11,092, $8,877 and $7,929 in 1997, 1996 and 1995,
    respectively, consisting primarily of sales from CTS to IMS and Nielsen
    Media Research, have been excluded.
 
(3) Interest income excludes amounts recorded at corporate of $8,194, $1,656 and
    $1,229 for 1997, 1996 and 1995, respectively.
 
(4) Assets of $393,461, $261,642 and $61,215 at December 31, 1997, 1996 and
    1995, respectively, include cash and cash equivalents, investment in Gartner
    and Property, Plant and Equipment not identified with business segments and
    represent the reconciling items between total identifiable assets shown and
    the Company's total assets.
 
                                      F-28
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
FINANCIAL INFORMATION BY COUNTRY:
 
<TABLE>
<CAPTION>
                                                                        UNITED STATES(1)  ALL OTHER      TOTAL
                                                                        ----------------  ----------  ------------
<S>                                                                     <C>               <C>         <C>
YEAR ENDED DECEMBER 31, 1997
                                                                              --------    ----------  ------------
OPERATING REVENUE (2).................................................    $    759,070    $  659,083  $  1,418,153
LONG-LIVED ASSETS.....................................................    $    363,478    $  190,657  $    554,135
                                                                              --------    ----------  ------------
Year Ended December 31, 1996..........................................
                                                                              --------    ----------  ------------
Operating Revenue (2).................................................    $    950,526    $  780,070  $  1,730,596
Long-Lived Assets.....................................................    $    554,795    $  192,472  $    747,267
                                                                              --------    ----------  ------------
Year Ended December 31, 1995..........................................
                                                                              --------    ----------  ------------
Operating Revenue (2).................................................    $    834,786    $  707,554  $  1,542,340
Long-Lived Assets.....................................................    $    488,730    $  198,554  $    687,284
                                                                              --------    ----------  ------------
                                                                              --------    ----------  ------------
</TABLE>
 
- ------------------------
 
(1) The above table reflects the deconsolidation of Gartner and the sale of
    Pilot, in 1997.
 
(2) Revenue relates to external customers and is primarily attributable to the
    country of domicile.
 
NOTE 20. REORGANIZATION PLAN
 
    On January 15, 1998, the Company announced a plan to separate into two
independent, publicly traded companies--IMS HEALTH and Nielsen Media Research
(the "Cognizant Distribution"). The transaction, which has been structured as a
tax-free dividend of one share of IMS HEALTH common stock for each share of
Cognizant Corporation common stock, is targeted for completion by the middle of
1998. Concurrent with the transaction, Cognizant Corporation will change its
name to Nielsen Media Research, Inc. The separation would create IMS HEALTH as
the premier global provider of information solutions to the pharmaceutical and
healthcare industries, and establish an independent Nielsen Media Research, the
leader in television audience measurement services. Because of the significance
to Cognizant Corporation of the IMS HEALTH business to be distributed to
Cognizant stockholders in the Cognizant Distribution, IMS HEALTH will be the
successor to Cognizant from a financial reporting perspective. The transaction
is subject to final approval by the Company's board of directors and obtaining a
ruling from the Internal Revenue Service with respect to the tax-free treatment
of the transaction.
 
                                      F-29
<PAGE>
                             COGNIZANT CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 21. QUARTERLY FINANCIAL DATA (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                              THREE MONTHS ENDED
                                             -----------------------------------------------------
                                             MARCH 31 (1)  JUNE 30 (1)  SEPTEMBER 30  DECEMBER 31    FULL YEAR
                                             ------------  -----------  ------------  ------------  ------------
<S>                                          <C>           <C>          <C>           <C>           <C>
1997
OPERATING REVENUE..........................   $  315,576    $ 338,260    $  341,041    $  423,276   $  1,418,153
OPERATING INCOME...........................   $   47,887    $  66,701    $   87,163    $  133,591   $    335,342
NET INCOME.................................   $   52,905    $  60,055    $   77,066    $  122,324   $    312,350
BASIC EARNINGS PER SHARE OF COMMON STOCK...   $     0.31    $    0.36    $     0.47    $     0.75   $       1.89
DILUTED EARNINGS PER SHARE OF COMMON
  STOCK....................................   $     0.31    $    0.36    $     0.46    $     0.73   $       1.86
                                             ------------  -----------  ------------  ------------  ------------
 
1996
Operating Revenue..........................   $  370,019    $ 415,703    $  424,188    $  520,686   $  1,730,596
Operating Income (2).......................   $   58,978    $  81,912    $   60,195    $  142,083   $    343,168
Net Income.................................   $   33,277    $  42,875    $   39,858    $   79,441   $    195,451
Basic Earnings Per Share of Common Stock...   $     0.20    $    0.25    $     0.23    $     0.47   $       1.15
Diluted Earnings Per Share of Common
  Stock....................................   $     0.20    $    0.25    $     0.23    $     0.47   $       1.15
                                             ------------  -----------  ------------  ------------  ------------
</TABLE>
 
- ------------------------
 
(1) 1997 quarterly results have been restated to reflect the deconsolidation of
    Gartner.
 
(2) Includes a one-time acquisition-related charge of $33,233 related to
    Gartner's acquisition of J3 Learning Corporation in the third quarter.
 
NOTE 22. SUBSEQUENT EVENT (UNAUDITED)
 
    On March 23, 1998 the Company announced it has signed two definitive
agreements to acquire Walsh International Inc. ("Walsh") and Pharmaceutical
Marketing Services Inc. ("PMSI"), subject to regulatory approval. These
acquisitions are separate transactions and will be accounted for as purchases.
They are projected to close in the second quarter of 1998. The transactions have
been independently authorized by the Cognizant, Walsh and PMSI boards of
directors, and are subject to approval by Walsh and PMSI shareholders. Under
terms of the agreements, Walsh shareholders will receive .3041 shares of
Cognizant Corporation common stock per Walsh share (or, based on a Cognizant
share price of $51.792, consideration of approximately $167,000), and PMSI
shareholders will receive .2800 shares of Cognizant Corporation common stock per
PMSI share (or, based on a Cognizant share price of $51.792, consideration of
approximately $180,000). The number of shares of Cognizant Corporation common
stock to be issued in connection with each of the acquisitions is subject to a
collar adjustment based on the price of Cognizant Corporation common stock
during a period prior to the closing of the acquisitions. A one-time, non-cash
charge to write-off in-process research and development is expected, in the
range of $110,000 to $125,000 for both acquisitions combined. The Company
expects to issue approximately 6,700,000 shares from treasury stock to
consummate these transactions. In connection with the Cognizant Distribution,
Walsh and PMSI will become part of IMS HEALTH.
 
                                      F-30
<PAGE>
                             COGNIZANT CORPORATION
                 FIVE-YEAR SELECTED FINANCIAL DATA (UNAUDITED)
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
<TABLE>
<CAPTION>
                                                          FOR YEARS ENDED AND AS OF DECEMBER 31,
                                       ----------------------------------------------------------------------------
                                            1997            1996            1995            1994           1993
                                       --------------  --------------  --------------  --------------  ------------
<S>                                    <C>             <C>             <C>             <C>             <C>
RESULTS OF OPERATIONS:
 
  Operating Revenue..................  $    1,418,153  $    1,730,596  $    1,542,340  $    1,257,415  $  1,039,259
 
  Costs and Expenses(1)(2)...........       1,082,811       1,387,428       1,387,663       1,030,780       897,909
                                       --------------  --------------  --------------  --------------  ------------
 
  Operating Income(1)(2).............         335,342         343,168         154,677         226,635       141,350
 
  Non-Operating Income--Net(3).......          94,893           5,853           7,880          18,853        25,982
                                       --------------  --------------  --------------  --------------  ------------
  Income Before Provision for Income
    Tax..............................         430,235         349,021         162,557         245,488       167,332
 
  Provision For Income Taxes.........        (117,885)       (153,570)        (73,676)        (99,083)      (58,475)
                                       --------------  --------------  --------------  --------------  ------------
Income Before Cumulative Effect of
  Accounting Changes.................         312,350         195,451          88,881         146,405       108,857
Cumulative Effect of Accounting
  Changes, Net of Income Taxes(4)....        --              --              --              --             (41,143)
                                       --------------  --------------  --------------  --------------  ------------
 
Net Income...........................  $      312,350  $      195,451  $       88,881  $      146,405  $     67,714
Basic Earnings Per Share of Common
  Stock..............................  $         1.89  $         1.15  $         0.52  $         0.86  $    --
                                       --------------  --------------  --------------  --------------  ------------
Basic Average Number of Shares
  Outstanding........................     165,163,000     169,944,000     169,522,000     169,946,000       --
                                       --------------  --------------  --------------  --------------  ------------
Diluted Earnings Per Share of Common
  Stock..............................  $         1.86  $         1.15  $         0.52  $         0.85  $    --
                                       --------------  --------------  --------------  --------------  ------------
Diluted Average Number of Shares
  Outstanding........................     167,490,000     170,500,000  $  171,608,000  $  171,700,000  $    --
                                       --------------  --------------  --------------  --------------  ------------
As a % of Operating Revenue:
 
  Operating Income...................           23.6%           19.8%           10.0%           18.0%         13.6%
  Income Before Cumulative Effect of
    Accounting Changes...............           22.0%           11.3%            5.8%           11.6%         10.5%
                                       --------------  --------------  --------------  --------------  ------------
SHAREHOLDERS' EQUITY.................  $      801,570  $      872,613  $      604,588  $      606,483  $    540,833
                                       --------------  --------------  --------------  --------------  ------------
TOTAL ASSETS.........................  $    1,579,520  $    1,874,982  $    1,442,090  $    1,331,038  $  1,158,764
                                       --------------  --------------  --------------  --------------  ------------
</TABLE>
 
- ------------------------
 
(1) 1996 includes a one-time acquisition-related charge of $33,233 related to
    Gartner's acquisition of J3 Learning Corporation.
 
(2) 1995 includes a non-recurring charge of $90,070 (see Note 6 to the Cognizant
    Consolidated Financial Statements) and an incremental provision for
    postemployment benefits of $32,500. Also includes restructuring expense of
    $12,800, $7,957, and $46,408 in 1995, 1994 and 1993, respectively (See Note
    7 to the Cognizant Consolidated Financial Statements).
 
(3) Non-Operating Income in 1997 includes Gartner equity income of $65,120, SAB
    51 gains of $14,689, and gains from dispositions--net of $9,391. Results for
    prior years include gains from dispositions--net of $200, $15,124, $21,473
    and $21,022 in non-operating income in 1996, 1995, 1994 and 1993,
    respectively.
 
(4) 1993 includes the impact of $28,303 for the adoption of SFAS No. 112 and
    $12,840 for the adoption of SFAS No. 106.
 
                                      F-31
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Shareholder of IMS Health Incorporated:
 
    We have audited the accompanying statement of financial position of IMS
Health Incorporated, a wholly-owned subsidiary of Cognizant Corporation, as of
March 31, 1998. This financial statement is the responsibility of the management
of IMS Health Incorporated. Our responsibility is to express an opinion on this
financial statement based on our audit.
 
    We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the statement of financial position. An audit
also includes assessing the accounting principles used and the significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audit of the statement of financial
position provides a reasonable basis for our opinion.
 
    In our opinion, the statement of financial position referred to above
presents fairly, in all material respects, the financial position of IMS Health
Incorporated as of March 31, 1998, in conformity with generally accepted
accounting principles.
 
/s/ Coopers & Lybrand L.L.P.
 
COOPERS & LYBRAND L.L.P.
 
New York, New York
April 1, 1998
 
                                      F-32
<PAGE>
                            IMS HEALTH INCORPORATED
                        STATEMENT OF FINANCIAL POSITION
                                 MARCH 31, 1998
 
                                       ASSETS
 
<TABLE>
<S>                                                                                  <C>
Cash...............................................................................  $  10,000
                                                                                     ---------
Total Assets.......................................................................  $  10,000
                                                                                     ---------
                                                                                     ---------
</TABLE>
 
                       LIABILITIES AND SHAREHOLDER EQUITY
 
<TABLE>
<S>                                                                                  <C>
Common Stock, par value $0.01 per share; authorized--100 shares; issued and
  outstanding-- 100 shares.........................................................  $       1
Capital Surplus....................................................................  $   9,999
                                                                                     ---------
Total Liabilities and Shareholder Equity...........................................  $  10,000
                                                                                     ---------
                                                                                     ---------
</TABLE>
 
    The accompanying notes are an integral part of the financial statement.
 
                                      F-33
<PAGE>
                            IMS HEALTH INCORPORATED
                          NOTES TO FINANCIAL STATEMENT
 
NOTE 1. ORGANIZATION
 
    On February 3, 1998, IMS Health Incorporated (the "Company") was
incorporated under the General Corporation Law of the State of Delaware. The
Company has the authority under its Certificate of Incorporation to issue 100
shares of common stock, par value $0.01 per share (the "Common Stock"), one
hundred shares of which were issued to Cognizant Corporation ("Cognizant") for
$10,000 on February 4, 1998. The Company has no assets other than cash and has
not commenced operations. The Company's activities to date have been solely
related to its incorporation.
 
NOTE 2. PROPOSED REORGANIZATION
 
    On January 15, 1998, the Board of Directors of Cognizant approved in
principle a plan to distribute the Common Stock of IMS Health Incorporated to
all holders of outstanding shares of common stock of Cognizant (the
"Distribution"). The Distribution is subject to final approval by Cognizant's
Board of Directors and obtaining a ruling from the Internal Revenue Service with
respect to the tax-free treatment of the transaction. After the Distribution,
the Company will operate as an independent company that will focus on
information solutions to the pharmaceutical and healthcare industries. The
Company's principal businesses will include those of I.M.S. International, Inc.,
Erisco, Inc., Cognizant Enterprises, Inc., Cognizant Technology Solutions
Corporation, SSJ K.K. and an equity investment in Gartner Group, Inc. In
connection with the Distribution, application will be made by the Company to
list its Common Stock on the New York Stock Exchange.
 
NOTE 3. AMENDED CERTIFICATE OF INCORPORATION
 
    Prior to the date of the Distribution, the Company will file a Restated
Certificate of Incorporation which will authorize the issuance of 420,000,000
shares of all classes of stock of which 10,000,000 shares will represent shares
of preferred stock, par value $.01 per share ("Preferred Stock"), 400,000,000
shares will represent shares of Common Stock, and 10,000,000 shares will
represent shares of Series Common Stock, par value $.01 per share ("Series
Common Stock").
 
                                      F-34
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Shareholder of Nielsen Media Research, Inc.:
 
    We have audited the accompanying consolidated statements of financial
position of Nielsen Media Research, Inc. (a wholly-owned subsidiary of Cognizant
Corporation) as of December 31, 1997 and 1996, and the related consolidated
statements of income, divisional equity and cash flows for each of the three
years in the period ended December 31, 1997. These financial statements are the
responsibility of the Company's management. Our responsibility is to express an
opinion on these financial statements based on our audits.
 
    We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the consolidated financial statements are
free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements. An
audit also includes assessing the accounting principles used and the significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis
for our opinion.
 
    In our opinion, the financial statements referred to above present fairly,
in all material respects, the consolidated financial position of Nielsen Media
Research, Inc. as of December 31, 1997 and 1996, and the consolidated results of
its operations and cash flows for each of the three years in the period ended
December 31, 1997, in conformity with generally accepted accounting principles.
 
/s/ Coopers & Lybrand L.L.P.
 
COOPERS & LYBRAND L.L.P.
 
New York, New York
March 30, 1998
 
                                      F-35
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
 
                       CONSOLIDATED STATEMENTS OF INCOME
<TABLE>
<CAPTION>
                                                                             YEAR ENDED DECEMBER 31,
                                                                  ----------------------------------------------
<S>                                                               <C>             <C>             <C>
                                                                       1997            1996            1995
                                                                  --------------  --------------  --------------
 
<CAPTION>
                                                                  DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE
                                                                                       DATA
<S>                                                               <C>             <C>             <C>
OPERATING REVENUE...............................................  $      358,594  $      319,404  $      288,652
                                                                  --------------  --------------  --------------
Operating Costs.................................................         164,516         146,981         133,059
Selling and Administrative Expenses.............................          75,154          65,233          61,682
Depreciation and Amortization...................................          28,663          25,229          24,343
                                                                  --------------  --------------  --------------
INCOME BEFORE PROVISION FOR INCOME TAXES........................          90,261          81,961          69,568
                                                                  --------------  --------------  --------------
Provision for Income Taxes......................................         (37,786)        (34,356)        (29,156)
                                                                  --------------  --------------  --------------
NET INCOME......................................................  $       52,475  $       47,605  $       40,412
                                                                  --------------  --------------  --------------
                                                                  --------------  --------------  --------------
BASIC EARNINGS PER SHARE OF COMMON STOCK........................  $          .32  $          .28  $          .24
                                                                  --------------  --------------  --------------
                                                                  --------------  --------------  --------------
DILUTED EARNINGS PER SHARE OF COMMON STOCK......................  $          .32  $          .28  $          .24
                                                                  --------------  --------------  --------------
                                                                  --------------  --------------  --------------
Average Number of Shares Outstanding--Basic.....................     165,163,000     169,944,000     169,522,000
Dilutive Effect of Shares Issuable as of Year-End Under Stock
  Option Plans..................................................         287,323          59,170               0
Adjustment of Shares Applicable to Exercise of Stock Options....         214,667               0               0
                                                                  --------------  --------------  --------------
Average Number of Shares Outstanding--Diluted...................     165,664,990     170,003,170     169,522,000
                                                                  --------------  --------------  --------------
                                                                  --------------  --------------  --------------
</TABLE>
 
   The accompanying notes are an integral part of the consolidated financial
                                  statements.
 
                                      F-36
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
                 CONSOLIDATED STATEMENTS OF FINANCIAL POSITION
<TABLE>
<CAPTION>
                                                                                                 DECEMBER 31,
                                                                                            ----------------------
<S>                                                                                         <C>         <C>
                                                                                               1997        1996
                                                                                            ----------  ----------
 
<CAPTION>
                                                                                                DOLLAR AMOUNTS
                                                                                                 IN THOUSANDS
<S>                                                                                         <C>         <C>
ASSETS
CURRENT ASSETS
Cash and Cash Equivalents.................................................................  $    5,993  $    5,557
Accounts Receivable--Net..................................................................      51,986      44,773
Other Current Assets......................................................................       4,551       5,145
                                                                                            ----------  ----------
    Total Current Assets..................................................................      62,530      55,475
                                                                                            ----------  ----------
PROPERTY, PLANT AND EQUIPMENT--NET........................................................      55,050      44,310
COMPUTER SOFTWARE.........................................................................      43,093      35,653
INTANGIBLES...............................................................................      10,649      11,686
OTHER ASSETS..............................................................................      21,112      23,207
                                                                                            ----------  ----------
TOTAL ASSETS..............................................................................  $  192,434  $  170,331
                                                                                            ----------  ----------
                                                                                            ----------  ----------
LIABILITIES AND DIVISIONAL EQUITY
 
CURRENT LIABILITIES
Accounts Payable..........................................................................  $   14,355  $    6,876
Accrued and Other Current Liabilities.....................................................      23,629      20,398
Accrued Income Taxes......................................................................       5,475       4,810
Deferred Revenues.........................................................................       1,153       1,254
                                                                                            ----------  ----------
    Total Current Liabilities.............................................................      44,612      33,338
                                                                                            ----------  ----------
POSTRETIREMENT BENEFITS...................................................................      11,845       8,261
DEFERRED INCOME TAXES.....................................................................      34,394      29,379
                                                                                            ----------  ----------
TOTAL LIABILITIES.........................................................................      90,851      70,978
                                                                                            ----------  ----------
COMMITMENTS AND CONTINGENCIES
 
TOTAL DIVISIONAL EQUITY...................................................................     101,583      99,353
                                                                                            ----------  ----------
TOTAL LIABILITIES AND DIVISIONAL EQUITY...................................................  $  192,434  $  170,331
                                                                                            ----------  ----------
                                                                                            ----------  ----------
</TABLE>
 
   The accompanying notes are an integral part of the consolidated financial
                                  statements.
 
                                      F-37
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
<TABLE>
<CAPTION>
                                                                                     YEAR ENDED DECEMBER 31,
                                                                                ----------------------------------
<S>                                                                             <C>         <C>         <C>
                                                                                   1997        1996        1995
                                                                                ----------  ----------  ----------
 
<CAPTION>
                                                                                   DOLLAR AMOUNTS IN THOUSANDS
<S>                                                                             <C>         <C>         <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income....................................................................  $   52,475  $   47,605  $   40,412
Reconciliation of Net Income to Net Cash
Provided by Operating Activities:
    Depreciation and Amortization.............................................      28,663      25,229      24,343
    (Increase) Decrease in Accounts Receivable................................      (7,213)    (14,022)     13,597
    Increase in Accounts Payable..............................................       7,479         896       2,201
    Increase (Decrease) in Postretirement Benefits............................       3,543      (6,183)      9,380
    Deferred Income Taxes.....................................................       5,585      10,473      (4,058)
    Increase in Accrued Income Taxes..........................................         665         728       1,029
    Decrease (Increase) in Other Working Capital Items........................       3,195         (59)      3,369
                                                                                ----------  ----------  ----------
Net Cash Provided by Operating Activities.....................................      94,392      64,667      90,273
                                                                                ----------  ----------  ----------
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Expenditures..........................................................     (24,874)    (17,929)    (13,508)
Additions to Computer Software................................................     (17,121)    (14,356)    (14,298)
Additions to Intangibles......................................................      (7,681)     (6,266)     (3,011)
Other.........................................................................       6,834      (2,234)        (82)
                                                                                ----------  ----------  ----------
Net Cash Used in Investing Activities.........................................     (42,842)    (40,785)    (30,899)
                                                                                ----------  ----------  ----------
CASH FLOWS FROM FINANCING ACTIVITIES:
Net Transfers to Cognizant/D&B................................................     (51,107)    (19,069)    (58,755)
                                                                                ----------  ----------  ----------
Net Cash Used in Financing Activities.........................................     (51,107)    (19,069)    (58,755)
                                                                                ----------  ----------  ----------
Effect of Exchange Rate Changes on Cash and Cash Equivalents..................          (7)        (11)     --
                                                                                ----------  ----------  ----------
Increase in Cash and Cash Equivalents.........................................         436       4,802         619
Cash and Cash Equivalents, Beginning of Period................................       5,557         755         136
                                                                                ----------  ----------  ----------
Cash and Cash Equivalents, End of Period......................................  $    5,993  $    5,557  $      755
                                                                                ----------  ----------  ----------
                                                                                ----------  ----------  ----------
</TABLE>
 
   The accompanying notes are an integral part of the consolidated financial
                                  statements.
 
                                      F-38
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
 
                  CONSOLIDATED STATEMENTS OF DIVISIONAL EQUITY
 
<TABLE>
<CAPTION>
                                                                    YEAR ENDED DECEMBER 31,
                                                                -------------------------------
                                                                  1997       1996       1995
                                                                ---------  ---------  ---------
                                                                  DOLLAR AMOUNTS IN THOUSANDS
<S>                                                             <C>        <C>        <C>
BALANCE, BEGINNING OF PERIOD..................................  $  99,353  $  70,874  $  87,893
Net Income....................................................     52,475     47,605     40,412
Net Transfers to Cognizant/D&B................................    (51,107)   (19,069)   (58,755)
Change in Unrealized Gains on Investments.....................     --         --          1,324
Change in Cumulative Translation Adjustment...................        862        (57)    --
                                                                ---------  ---------  ---------
BALANCE, END OF PERIOD........................................  $ 101,583  $  99,353  $  70,874
                                                                ---------  ---------  ---------
                                                                ---------  ---------  ---------
</TABLE>
 
   The accompanying notes are an integral part of the consolidated financial
                                  statements.
 
                                      F-39
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 1. BASIS OF PRESENTATION
 
    On January 15, 1998, Cognizant Corporation ("Cognizant") announced a plan to
separate into two independent, publicly traded companies--Nielsen Media
Research, Inc. ("Nielsen Media Research"), and IMS Health Incorporated ("IMS
HEALTH") (the "Cognizant Distribution"). The transaction, which has been
structured as a tax-free dividend of one share of IMS HEALTH common stock for
each share of Cognizant Corporation common stock, is targeted for completion by
mid-1998. Concurrent with the transaction, Cognizant Corporation will change its
name to Nielsen Media Research, Inc. Although Nielsen Media Research, Inc. will
be the same corporate legal entity as Cognizant Corporation, except as
specifically included or disclosed in these consolidated financial statements,
or specified in agreements between Nielsen Media Research and IMS HEALTH,
Nielsen Media Research will be indemnified by IMS Health for liabilities of
Cognizant incurred before the date of the Cognizant Distribution.
 
    The separation will create IMS HEALTH as the premier global provider of
information solutions to the pharmaceutical and healthcare industries, and
establish an independent Nielsen Media Research, the leader in television
audience measurement services. The Cognizant Distribution is subject to final
approval by Cognizant's Board of Directors and obtaining a ruling from the
Internal Revenue Service with respect to the tax-free treatment of the
transaction.
 
    As used in the accompanying consolidated financial statements, the term
"Nielsen Media Research" or "the Company" refers to the operations of the
television audience measurement business, the term "IMS HEALTH" refers to the
operations of the pharmaceutical and healthcare information business, and the
term "Cognizant" refers to the pre-Cognizant Distribution consolidated entity
which operates both businesses. The term "D&B" refers to Cognizant's former
parent.
 
    On November 1, 1996 (the "D&B Distribution Date"), The Dun Bradstreet
Corporation ("D&B") distributed to its shareholders all of the outstanding
shares of common stock of Cognizant, then a wholly-owned subsidiary of D&B (the
"D&B Distribution"). In the D&B Distribution, holders of D&B common stock
received one share of Cognizant common stock for every share of D&B common stock
held.
 
    The consolidated financial statements have been prepared using Cognizant's
historical basis in the assets and liabilities and historical results of
operations related to the Company's business.
 
    The consolidated financial statements generally reflect the financial
position, results of operations, and cash flows of the Company as if it were a
separate entity for all periods presented. The consolidated financial statements
include allocations of certain Cognizant corporate headquarters assets
(including prepaid pension assets) and liabilities (including pension and
postretirement benefits) and an allocation of Cognizant corporate and other
expenses (including cash management, legal, accounting, tax, employee benefits,
insurance services, data services and other corporate overhead) relating to the
Company's business for the year ended December 31, 1997 and for the two months
ended December 31, 1996 and corresponding D&B corporate and other expenses for
the ten months ended October 31, 1996 and for the year ended December 31, 1995
(the "Respective Periods"). Management believes these allocations are
reasonable. However, the financial information included herein may not
necessarily reflect the consolidated financial position, results of operations,
and cash flows of the Company in the future or what they would have been if the
Company had been a separate entity during the periods presented.
 
    For purposes of governing certain of the ongoing relationships between the
Company and IMS HEALTH after the Cognizant Distribution and to provide for
orderly transition, the Company and IMS
 
                                      F-40
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 1. BASIS OF PRESENTATION (CONTINUED)
HEALTH will enter into various agreements including a Distribution Agreement,
Tax Allocation Agreement, Employee Benefits Agreement, Intellectual Property
Agreement, Shared Transaction Services Agreement, Data Services Agreement and
Transition Services Agreement. Summaries of these agreements are set forth
elsewhere in this Information Statement.
 
NOTE 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
    CONSOLIDATION.  The consolidated financial statements of the Company include
the accounts of the Company and its subsidiaries after elimination of all
material intercompany accounts and transactions.
 
    CASH EQUIVALENTS.  The Company considers all highly liquid investments with
a maturity of 90 days or less at the time of purchase to be cash equivalents.
 
    PROPERTY, PLANT AND EQUIPMENT.  Buildings and machinery and equipment are
depreciated over their estimated useful lives of 40 and 3 to 5 years,
respectively, using the straight-line method. Leasehold improvements are
amortized on a straight-line basis over the shorter of the term of the lease or
the estimated useful life of the improvement.
 
    COMPUTER SOFTWARE.  Certain direct costs incurred in the development of
computer software for external use or to meet the internal needs of the Company
are capitalized. Computer software costs incurred to establish technological
feasibility or in the preliminary project stage of development are expensed in
the periods in which they are incurred. Capitalization ceases and amortization
starts when a computer software product is available for general release to
customers or when the computer software project is placed in service.
Amortization on a computer software product is computed using the greater of (a)
the ratio of a product's current gross revenues to the total of current and
expected gross revenues or (b) the straight-line method computed by dividing the
capitalized costs by the estimated economic life of a product over three to five
years. The costs of computer software developed for internal use are amortized
on a straight-line basis over three to five years. At each balance sheet date
the Company reviews the recoverability of the unamortized capitalized costs of
computer software by comparing the carrying value of computer software with the
estimated net realizable value.
 
    INTANGIBLES.  Intangibles primarily result from the deferral of direct costs
related to the installation of meters in markets in which customer contracts
preexist. Intangibles are amortized, using the straight-line method, over the
life of the contracts, which are generally five years.
 
    LONG-LIVED ASSETS.  Long-lived assets and certain identifiable intangibles
held and used by an entity are reviewed for impairment whenever events or
changes in circumstances indicate that the carrying amount of an asset may not
be recoverable. Recognition of an impairment loss is recognized when the sum of
undiscounted expected future cash flows is less than the carrying amount of such
assets. The measurement for such impairment loss is then based on the fair value
of the asset.
 
    REVENUE RECOGNITION.  The Company recognizes subscription revenue as earned,
which is generally pro rata over a one-year period, or as the information is
delivered or related services are performed. For certain metered market
contracts with fixed payment terms, revenue is recognized on a straight-line
basis over the contract period, which is generally five years. The difference
between the amount recognized as revenue and the amount billed for service is
recorded as unbilled receivables.
 
                                      F-41
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    FOREIGN CURRENCY TRANSLATION.  The Company has operations in Canada. Changes
in the value of the Canadian dollar (the functional currency) affect the
Company's consolidated financial statements when translated into U.S. dollars.
 
    For operations in Canada, assets and liabilities are translated using
end-of-period exchange rates; revenues and expenses are translated using average
rates of exchange. Currency translation adjustments are accumulated in a
separate component of Divisional Equity, whereas realized transaction gains and
losses are recognized in current income.
 
    INCOME TAXES.  The Company has been included in the Federal and certain
state and Canadian income tax returns of Cognizant and D&B for the Respective
Periods. The provision for income taxes in the Company's consolidated financial
statements has been calculated on a separate-company basis. Income taxes paid on
behalf of the Company by Cognizant and D&B for the Respective Periods are
included in Divisional Equity. Effective after the Cognizant Distribution, the
Company will file separate income tax returns.
 
    DIVISIONAL EQUITY.  Divisional Equity includes historical investments and
advances from Cognizant and D&B, including net transfers to/from Cognizant and
D&B, third-party liabilities paid on behalf of the Company by Cognizant and D&B
and amounts due to/from Cognizant and D&B for services and other charges, as
well as current-period income through the Respective Periods.
 
    ESTIMATES.  The preparation of financial statements in conformity with
generally accepted accounting principles requires management to make estimates
and assumptions that affect the reported amounts of assets, liabilities,
revenues and expenses and the disclosure of contingent assets and liabilities.
Actual results could differ from those estimates. Estimates are used for, but
not limited to, the accounting for: allowance for uncollectible accounts
receivable, depreciation and amortization, capitalized software costs, employee
benefit plans, taxes and contingencies.
 
    EARNINGS PER SHARE.  In 1997, the Company adopted Statement of Financial
Accounting Standards ("SFAS") No. 128, "Earnings Per Share". Basic earnings per
share are calculated by dividing net income by weighted average common shares.
Diluted earnings per share are calculated by dividing net income by dilutive
potential common shares. Dilutive potential common shares are calculated in
accordance with the treasury stock method, which assumes that proceeds from the
exercise of all Nielsen Media Research employee options are used to repurchase
common stock at market value. The amount of shares remaining after the proceeds
are exhausted represent the potentially dilutive effect of the options. In 1997,
the computation represents the weighted average number of shares of Cognizant.
The computation in 1996 and 1995 includes the weighted average number of D&B
shares outstanding, reflecting the one-for-one distribution ratio and the
weighted average number of shares of Cognizant common stock outstanding during
the Respective Periods.
 
    CONCENTRATIONS OF CREDIT RISK.  The Company maintains trade accounts
receivable and unbilled receivable balances ($66,207 and $62,266 at December 31,
1997 and 1996, respectively), principally from customers in the television media
industry.
 
    RECENTLY ISSUED ACCOUNTING STANDARDS:  In June 1997, the Financial
Accounting Standards Board ("FASB") issued SFAS No. 130, "Reporting
Comprehensive Income", which requires that changes in
 
                                      F-42
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
comprehensive income be shown in a financial statement that is displayed with
the same prominence as other financial statements. This statement is effective
for periods beginning after December 15, 1997. The Company is in the process of
evaluating the disclosure requirements under this standard.
 
    In June 1997, the FASB issued SFAS No. 131, "Disclosures About Segments of
an Enterprise and Related Information", which changes the way public companies
report information about segments. SFAS No. 131, which is based on the
management approach to segment reporting, includes requirements to report
selected segment information quarterly and entity-wide disclosures about
products and services, major customers, and the material countries in which the
entity holds assets and reports revenues. This statement is effective for
periods beginning after December 15, 1997. The Company is in the process of
evaluating the disclosure requirements under this standard.
 
    In February 1998, the FASB issued SFAS No. 132, "Employers' Disclosures
About Pensions And Other Postretirement Benefits", which changes current
financial statement disclosure requirements from those required under SFAS No.
87, "Employers' Accounting for Pensions"; SFAS No. 88, "Employers' Accounting
for Settlements and Curtailments of Defined Benefit Pension Plans and for
Termination Benefits"; and SFAS No. 106, "Employers' Accounting for
Postretirement Benefits Other Than Pensions". The statement does not change the
existing measurement or recognition provisions of SFAS Nos. 87, 88 or 106, and
is effective for periods beginning after December 15, 1997. The Company is in
the process of evaluating the disclosure requirements under this standard.
 
NOTE 3. FINANCIAL INSTRUMENTS
 
    At December 31, 1997, the Company's financial instruments included cash,
cash equivalents, receivables, and accounts payable. At December 31, 1997, the
fair values of cash, cash equivalents, trade receivables and accounts payable
approximated carrying values because of the short-term nature of these
instruments.
 
    The Company's trade receivables do not represent significant concentrations
of credit risk at December 31, 1997 due to the high quality of its customers.
 
NOTE 4. PENSION AND POSTRETIREMENT BENEFITS
 
    At the date of the Cognizant Distribution (the "Cognizant Distribution
Date"), the Company will assume responsibility for pension and postretirement
benefits for active employees and retirees of the Company. An allocation of
assets and liabilities for such benefits has been included in the consolidated
financial statements.
 
    U.S. BENEFIT PLANS.  The Company participates in Cognizant's defined benefit
pension plan covering all eligible employees in the United States. The plan is a
cash balance pension plan under which 6% of creditable compensation plus
interest is credited to eligible employee's retirement accounts on a monthly
basis. At the time of retirement, the vested employee's account balance is
actuarially converted into an annuity. Prior to the D&B Distribution, the
Company participated in the D&B defined benefit pension plan. Accordingly, the
Company has recorded pension expense, as allocated in the Respective Periods by
Cognizant and D&B, totaling $1,571, $2,397, and $2,397 for the years 1997, 1996,
and 1995, respectively.
 
                                      F-43
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 4. PENSION AND POSTRETIREMENT BENEFITS (CONTINUED)
    Certain employees of the Company in the United States also have been
eligible to participate in the Cognizant and D&B-sponsored defined contribution
plans during the Respective Periods. The Company makes a matching contribution
of up to 50% of the employee's contribution based on specified limits of the
employee's salary. The Company's expense related to these plans was $2,021,
$1,797 and $2,340 for the years 1997, 1996 and 1995, respectively.
 
    NON-U.S. BENEFIT PLANS.  The Company's subsidiary in Canada provides
retirement benefits for eligible employees through defined benefit plans. The
projected benefit obligations and accrued pension cost for these funded and
unfunded plans at December 31, 1997 and 1996 and the pension costs for these
plans for the years 1997, 1996 and 1995, respectively, were not significant.
 
    POSTRETIREMENT BENEFITS.  In addition to providing pension benefits,
Cognizant and D&B provide various healthcare and life insurance benefits for
retired Company employees. Employees in the United States become eligible for
these benefits if they reach normal retirement age while working for the
Company. The Company accounts for the plans as multi-employer plans. The cost of
postretirement benefit plans as allocated by Cognizant and D&B during the
respective periods was not significant.
 
NOTE 5. EMPLOYEE STOCK PLANS
 
    Under Cognizant's Key Employees Stock Incentive Plan (the ``Plan") certain
employees of the Company are eligible for the grant of stock options and
restricted stock. These awards are granted at the market value on the date of
grant. Immediately following the D&B Distribution, outstanding stock option
awards under the D&B Key Employee Stock Option Plans held by Company employees
were canceled and replaced by substitute awards under the Plan. At December 31,
1997 outstanding options for Cognizant common stock held by Company employees
totaled 4,107,012, of which 1,006,740 had vested and were exercisable. The
option prices range from $22.99 to $44.47 per share.
 
    Immediately following the Cognizant Distribution Date, outstanding awards
under the Plan held by Company employees will be adjusted or replaced by
substitute awards in accordance with the Plan. The adjusted or substitute awards
will have the same ratio of the exercise price per option to the market value
per share, the same aggregate difference between market value and exercise
price, and the same vesting provisions, option periods and other terms and
conditions as the options they replace.
 
    In October 1995, the FASB issued SFAS No. 123, ``Accounting for Stock-Based
Compensation", which requires that companies with stock-based compensation plans
either recognize compensation expense based on the fair value of options granted
or continue to apply the existing accounting rules and disclose pro forma net
income and earnings per share assuming the fair value method had been applied.
The Company has chosen to continue applying Accounting Principles Board Opinion
No. 25 and related interpretations in accounting for its plans. Accordingly, no
compensation cost has been recognized for the fixed stock option plans. Had
compensation cost for the Company's stock-based compensation plans been
determined based on the fair value at the grant dates for awards to Company
employees under those plans,
 
                                      F-44
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 5. EMPLOYEE STOCK PLANS (CONTINUED)
consistent with the method of SFAS No. 123, the Company's net income and
earnings per share would have been reduced to the pro forma amounts indicated
below:
 
<TABLE>
<CAPTION>
                                                                                            YEAR ENDED DECEMBER 31,
                                                                                        -------------------------------
<S>                                                                                     <C>        <C>        <C>
                                                                                          1997       1996       1995
                                                                                        ---------  ---------  ---------
Net Income
    As reported.......................................................................  $  52,475  $  47,605  $  40,412
    Pro forma.........................................................................  $  49,059  $  46,660  $  40,408
Earnings Per Share:
  Basic/Diluted
    As reported.......................................................................  $     .32  $     .28  $     .24
    Pro forma.........................................................................  $     .30  $     .27  $     .24
</TABLE>
 
- ------------------------
 
Note: The pro forma disclosures shown above are not representative of the
effects on net income and earnings per share in future years.
 
    The fair value of the stock options used to compute the Company's pro forma
net income and earnings per share disclosures is based on an allocation of the
estimated value of the Cognizant and D&B stock options at grant date using the
Black-Scholes option pricing model. The following assumptions were used for
Cognizant options granted in 1997 and 1996: dividend yield of 0.3%; expected
volatility of 25%; a weighted average risk-free interest rate of 5.9%; and an
expected term of 4.5 years. The following assumptions were used for D&B options
granted in 1995: dividend yield of 4.7%; expected volatility of 15%; expected
term of 5 years and a weighted average risk-free interest rate of 6.1%. The
weighted average fair value of the Cognizant and D&B stock options granted in
1997, 1996 and 1995 are $11.46, $10.31 and $6.68, respectively.
 
                                      F-45
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 6. INCOME TAXES
 
    Income before provision for income taxes consisted of:
 
<TABLE>
<CAPTION>
                                                                                     1997       1996       1995
                                                                                   ---------  ---------  ---------
<S>                                                                                <C>        <C>        <C>
Pretax Income....................................................................  $  90,261  $  81,961  $  69,568
</TABLE>
 
    The provision (benefit) for income taxes consisted of:
 
<TABLE>
<CAPTION>
                                                                                     1997       1996       1995
                                                                                   ---------  ---------  ---------
<S>                                                                                <C>        <C>        <C>
U.S. Federal
Current..........................................................................  $  23,600  $  16,735  $  23,984
Deferred.........................................................................      4,674      8,764     (3,397)
                                                                                   ---------  ---------  ---------
                                                                                      28,274     25,499     20,587
                                                                                   ---------  ---------  ---------
U.S. State & Local and Other
Current..........................................................................      8,601      7,148      9,231
Deferred.........................................................................        911      1,709       (662)
                                                                                   ---------  ---------  ---------
                                                                                       9,512      8,857      8,569
                                                                                   ---------  ---------  ---------
Total............................................................................  $  37,786  $  34,356  $  29,156
                                                                                   ---------  ---------  ---------
                                                                                   ---------  ---------  ---------
</TABLE>
 
    The following table summarizes the significant differences between the U.S.
Federal statutory taxes and the Company's provision for income taxes for
consolidated financial statement purposes.
 
<TABLE>
<CAPTION>
                                                                                     1997       1996       1995
                                                                                   ---------  ---------  ---------
<S>                                                                                <C>        <C>        <C>
Tax Expense at Statutory Rate....................................................  $  31,591  $  28,686  $  24,349
State and Local Income Taxes, net of Federal Tax Benefit.........................      6,053      5,355      4,563
Other............................................................................        142        315        244
                                                                                   ---------  ---------  ---------
Total Taxes......................................................................  $  37,786  $  34,356  $  29,156
                                                                                   ---------  ---------  ---------
                                                                                   ---------  ---------  ---------
</TABLE>
 
    The Company's deferred tax assets (liabilities) are comprised of the
following at December 31:
 
<TABLE>
<CAPTION>
                                                                                               1997        1996
                                                                                            ----------  ----------
<S>                                                                                         <C>         <C>
Deferred Tax Assets:
  Postretirement Benefits.................................................................  $    4,428  $    3,177
  Bad Debts...............................................................................       1,735       1,743
  Other...................................................................................         151         285
                                                                                            ----------  ----------
                                                                                                 6,314       5,205
Deferred Tax Liabilities:
  Computer Software and Intangibles.......................................................     (25,524)    (20,498)
  Unbilled Revenue........................................................................      (3,952)     (2,858)
  Postretirement Benefits.................................................................      (3,418)     (3,064)
  Depreciation............................................................................      (5,879)     (6,136)
  Other...................................................................................        (477)          0
                                                                                            ----------  ----------
                                                                                               (39,250)    (32,556)
                                                                                            ----------  ----------
  Net Deferred Tax Liability..............................................................  $  (32,936) $  (27,351)
                                                                                            ----------  ----------
                                                                                            ----------  ----------
</TABLE>
 
                                      F-46
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 7. LEASE COMMITMENTS
 
    Certain of the Company's operations are conducted from leased facilities
under operating leases. Rental expense under real estate operating leases for
the years 1997, 1996 and 1995 was $8,866, $8,842, and $8,938, respectively. The
approximate minimum annual rental expense for real estate operating leases that
have remaining noncancelable lease terms in excess of one year, net of sublease
rentals, at December 31, 1997 was: 1998 -- $7,787; 1999 -- $6,816; 2000 --
$6,621; 2001 -- $4,141; 2002 -- $1,505 and an aggregate of $4,848 thereafter.
 
    The Company also leases or participates in leases of certain computer and
other equipment under operating leases. These leases are frequently renegotiated
or otherwise changed as advancements in computer technology produce
opportunities to lower costs and improve performance. Rental expense under
computer and other equipment leases was $2,045, $1,932, and $2,599 for 1997,
1996 and 1995, respectively. At December 31, 1997, the minimum annual rental
expense for computer and other equipment under operating leases that have
remaining noncancelable lease terms in excess of one year was: 1998 -- $1,333;
1999 -- $863; 2000 -- $479 and 2001 -- $6.
 
    Prior to the Cognizant Distribution Date, the Company will assume certain
Cognizant leases or enter into sublease agreements with IMS HEALTH, an affiliate
or third parties for certain leased facilities, computer and other equipment,
which principally are a continuation of existing lease commitments at market
rates. These commitments are included in the amounts disclosed above.
 
NOTE 8. OTHER TRANSACTIONS WITH AFFILIATES
 
    Cognizant and D&B (pre-D&B Distribution) have used a centralized cash
management system to finance their operations. Cash deposits from most of the
Company's businesses are transferred to Cognizant and were transferred to D&B
(pre-D&B Distribution) on a daily basis. Cognizant and D&B (pre-D&B
Distribution) funded the Company's disbursement bank accounts as required. No
interest has been charged on these transactions. Cash and cash equivalents in
the accompanying consolidated financial statements represent remaining balances
in the Company's accounts.
 
    Cognizant and D&B provided certain centralized services (see Note 1 to the
Consolidated Financial Statements) to the Company. Expenses related to these
services were allocated to the Company based on utilization of specific services
or, where not estimable, based on revenue of the Company in proportion to
Cognizant's and D&B's consolidated revenue. Management believes these allocation
methods are reasonable. These allocations were $34,146, $34,676 and $30,353 in
1997, 1996 and 1995, respectively, and are included in operating costs and
selling and administrative expenses in the Consolidated Statements of Income.
Amounts due to Cognizant and D&B for these allocated expenses are included in
Divisional Equity.
 
    Net transfers to or from Cognizant and D&B, included in Divisional Equity,
include advances and loans from affiliates, net cash transfers to or from
Cognizant and D&B, third-party liabilities paid on behalf of the Company by
Cognizant and D&B, amounts due to or from Cognizant and D&B for services and
other charges, and income taxes paid on behalf of the Company by Cognizant and
D&B during the Respective Periods. No interest has been charged on these
transactions. The weighted average balance due from Cognizant and D&B was
$334,329, $342,319 and $275,471 for 1997, 1996 and 1995, respectively.
 
                                      F-47
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 8. OTHER TRANSACTIONS WITH AFFILIATES (CONTINUED)
    The activity in the net transfers to Cognizant and D&B account for the
periods through the respective Distribution Dates included in Divisional Equity
in the Consolidated Statements of Divisional Equity is summarized as follows:
 
<TABLE>
<CAPTION>
                                                                         YEAR ENDED    YEAR ENDED    YEAR ENDED
                                                                        DECEMBER 31,  DECEMBER 31,  DECEMBER 31,
                                                                            1997          1996          1995
                                                                        ------------  ------------  ------------
<S>                                                                     <C>           <C>           <C>
Cognizant/D&B Services and Other Charges..............................   $  (37,738)   $  (38,870)   $  (35,090)
Loans and Advances--Net...............................................       12,151       (28,980)       (6,683)
U.S. Income Taxes.....................................................      (23,600)      (16,735)      (23,984)
Cash Transfers--Net...................................................      100,294       103,654       124,512
                                                                        ------------  ------------  ------------
Net Transfers to Cognizant/D&B........................................   $   51,107    $   19,069    $   58,755
                                                                        ------------  ------------  ------------
                                                                        ------------  ------------  ------------
</TABLE>
 
    For purposes of governing certain of the ongoing relationships between the
Company and IMS HEALTH after the Cognizant Distribution and to provide for an
orderly transition, the Company and IMS HEALTH will enter into various
agreements including a Distribution Agreement, Tax Allocation Agreement,
Employee Benefits Agreement, Intellectual Property Agreement, Shared Transaction
Services Agreement, Data Services Agreement and Transition Services Agreement.
Among other things, the agreements will set forth principles to be applied in
allocating certain Cognizant Distribution-related costs and specify portions of
contingent liabilities (including certain contingent liabilities arising from
the D&B Distribution) to be shared if certain amounts are exceeded.
 
NOTE 9. CAPITAL STOCK
 
    Under a Shareholder Rights Plan (the "Rights Plan") adopted by the Cognizant
Board of Directors, each certificate for a share of Cognizant's common stock
also represents one Preferred Share Purchase Right (a ``Right"). In the event a
person or group (an ``Acquiring Person") acquires beneficial ownership of, or
commences or announces an intention to make a tender offer for more than 15% of
the outstanding shares of common stock, each Right entitles the holder to
purchase one one-thousandth of a share of Series A Junior Participating
Preferred Stock at $210 per each one one-thousandth of a share (the ``Purchase
Price"). In the event a person or group becomes an Acquiring Person, or
Cognizant is acquired in a merger or other business combination or 50% or more
of its assets or earning power are sold, each holder of a Right (other than an
Acquiring Person) has the right to receive common stock of Cognizant or the
entity that engaged in such transaction, as applicable, which has a market value
of two times the Purchase Price. The Rights, which do not have voting rights and
are subject to adjustment in certain circumstances, expire on October 23, 2006
and are redeemable by Cognizant at a price of $0.01 per Right under certain
circumstances. The Company intends to continue this Rights Plan.
 
NOTE 10. LITIGATION
 
    The Company and its subsidiaries are involved in legal proceedings and
litigation arising in the ordinary course of business. In the opinion of
management, the outcome of such current legal proceedings and litigation, if
decided adversely, could have a material adverse effect on quarterly or annual
operating results or cash flows when resolved in a future period. However, in
the opinion of management, these matters will not materially affect the
Company's consolidated financial position.
 
                                      F-48
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 10. LITIGATION (CONTINUED)
    On July 29, 1996, Information Resources, Inc. ("IRI") filed a complaint in
the United States District Court for the Southern District of New York, naming
as defendants D&B, A.C. Nielsen Company and IMS, a unit of Cognizant (the "IRI
Action"). The complaint alleges, among other things, various violations of the
antitrust laws and damages in excess of $350,000, which amount IRI has asked to
be trebled under the antitrust laws. IRI also seeks punitive damages in an
unspecified amount. In connection with the D&B Distribution, D&B, ACNielsen
Corporation ("ACNielsen") and Cognizant entered into an Indemnity and Joint
Defense Agreement (the "Indemnity and Joint Defense Agreement") pursuant to
which ACNielsen agreed to be responsible for any potential liabilities which may
ultimately be incurred by D&B or Cognizant as a result of such action, up to a
minimum amount to be determined by an independent investment bank if and when
any such liabilities are incurred. The determination of such maximum amount will
be based on ACNielsen's ability to satisfy such liabilities and remain
financially viable, subject to certain assumptions and limitations. However,
Cognizant and D&B agreed that to the extent that ACNielsen is unable to satisfy
any such liabilities in full and remain financially viable, Cognizant and D&B
will each be responsible for 50% of the difference between the amount, if any,
which may be payable as a result of such litigation and the maximum amount which
ACNielsen is then able to pay as determined by such investment bank. Under the
terms of the D&B Distribution Agreement, dated October 28, 1996, among
Cognizant, D&B and ACNielsen (the "1996 Distribution Agreement"), pursuant to
which shares of Cognizant and ACNielsen were distributed to the stockholders of
D&B as a condition to the Cognizant Distribution, Nielsen Media Research and IMS
HEALTH are required to undertake to be jointly and severally liable to D&B and
ACNielsen. However, pursuant to the Distribution Agreement, IMS HEALTH and
Nielsen Media Research have agreed that, as between themselves, IMS HEALTH will
assume 75%, and Nielsen Media Research will assume 25%, of any payments to be
made in respect of the IRI Action under the Indemnity and Joint Defense
Agreement or otherwise, including any ongoing legal fees and expenses related
thereto incurred in 1999 or thereafter. IMS HEALTH has agreed to be fully
responsible for any legal fees and expenses incurred during 1998. Nielsen Media
Research's aggregate liability to IMS HEALTH for payments in respect of the IRI
Action and certain other contingent liabilities shall not exceed $125 million.
Management is unable to predict at this time the final outcome of the IRI Action
or whether the resolution of such matter could materially affect Nielsen Media
Research's results of operations, cash flows or financial position.
 
NOTE 11. SUPPLEMENTAL FINANCIAL DATA
 
ACCOUNTS RECEIVABLE--NET:
 
<TABLE>
<CAPTION>
                                                                                                1997       1996
                                                                                              ---------  ---------
<S>                                                                                           <C>        <C>
Trade.......................................................................................  $  53,641  $  46,719
Less: Allowance for Doubtful Accounts.......................................................     (3,294)    (3,773)
Other.......................................................................................      1,639      1,827
                                                                                              ---------  ---------
                                                                                              $  51,986  $  44,773
                                                                                              ---------  ---------
                                                                                              ---------  ---------
</TABLE>
 
                                      F-49
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 11. SUPPLEMENTAL FINANCIAL DATA (CONTINUED)
OTHER CURRENT ASSETS:
 
<TABLE>
<CAPTION>
                                                                                                   1997       1996
                                                                                                 ---------  ---------
<S>                                                                                              <C>        <C>
Deferred Income Taxes..........................................................................  $   1,458  $   2,028
Prepaid Expenses...............................................................................      3,093      3,117
                                                                                                 ---------  ---------
                                                                                                 $   4,551  $   5,145
                                                                                                 ---------  ---------
                                                                                                 ---------  ---------
</TABLE>
 
PROPERTY, PLANT AND EQUIPMENT--NET, CARRIED AT COST, LESS ACCUMULATED
  DEPRECIATION AND AMORTIZATION:
 
<TABLE>
<CAPTION>
                                                                                               1997        1996
                                                                                            ----------  ----------
<S>                                                                                         <C>         <C>
Buildings.................................................................................  $   13,413  $   13,360
Machinery and Equipment...................................................................     134,155     111,372
Less: Accumulated Depreciation............................................................     (98,325)    (85,506)
Leasehold Improvements, less: Accumulated Amortization of $2,597 and $1,886...............       4,243       4,059
Land......................................................................................       1,564       1,025
                                                                                            ----------  ----------
                                                                                            $   55,050  $   44,310
                                                                                            ----------  ----------
                                                                                            ----------  ----------
</TABLE>
 
COMPUTER SOFTWARE AND INTANGIBLES
 
<TABLE>
<CAPTION>
                                                                                             COMPUTER
                                                                                             SOFTWARE    INTANGIBLES
                                                                                            -----------  -----------
<S>                                                                                         <C>          <C>
January 1, 1996...........................................................................   $  27,601    $  12,299
Additions at Cost.........................................................................      14,356        6,266
Amortization..............................................................................      (7,021)      (4,599)
Other Deductions and Reclassifications....................................................         717       (2,280)
                                                                                            -----------  -----------
December 31, 1996.........................................................................      35,653       11,686
Additions at Cost.........................................................................      17,121        7,681
Amortization..............................................................................      (9,641)      (4,934)
Other Deductions and Reclassifications....................................................         (40)      (3,784)
                                                                                            -----------  -----------
December 31, 1997.........................................................................   $  43,093    $  10,649
                                                                                            -----------  -----------
                                                                                            -----------  -----------
</TABLE>
 
    Accumulated Amortization of Computer Software was $32,605 and $23,019 at
December 31, 1997 and 1996, respectively.
 
    Accumulated Amortization of Intangibles was $22,773 and $34,309 at December
31, 1997 and 1996, respectively.
 
                                      F-50
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
               DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE DATA
 
NOTE 11. SUPPLEMENTAL FINANCIAL DATA (CONTINUED)
OTHER ASSETS:
 
<TABLE>
<CAPTION>
                                                                                                1997       1996
                                                                                              ---------  ---------
<S>                                                                                           <C>        <C>
Unbilled Receivables........................................................................  $  12,566  $  15,547
Pension Assets..............................................................................      8,546      7,660
                                                                                              ---------  ---------
                                                                                              $  21,112  $  23,207
                                                                                              ---------  ---------
                                                                                              ---------  ---------
</TABLE>
 
ACCOUNTS PAYABLE:
 
<TABLE>
<CAPTION>
                                                                                                 1997       1996
                                                                                               ---------  ---------
<S>                                                                                            <C>        <C>
Trade........................................................................................  $  11,714  $   5,003
Taxes Other Than Income Taxes................................................................      2,641      1,873
                                                                                               ---------  ---------
                                                                                               $  14,355  $   6,876
                                                                                               ---------  ---------
                                                                                               ---------  ---------
</TABLE>
 
ACCRUED AND OTHER CURRENT LIABILITIES:
 
<TABLE>
<CAPTION>
                                                                                                1997       1996
                                                                                              ---------  ---------
<S>                                                                                           <C>        <C>
Salaries, Wages, Bonuses and Other Compensation.............................................  $  13,386  $   4,820
Other.......................................................................................     10,243     15,578
                                                                                              ---------  ---------
                                                                                              $  23,629  $  20,398
                                                                                              ---------  ---------
                                                                                              ---------  ---------
</TABLE>
 
NOTE 12. QUARTERLY FINANCIAL DATA (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                        THREE MONTHS ENDED
                                         ------------------------------------------------
                                                                  SEPTEMBER    DECEMBER
                                          MARCH 31,   JUNE 30,       30,          31,      FULL YEAR
                                         -----------  ---------  -----------  -----------  ---------
<S>                                      <C>          <C>        <C>          <C>          <C>
1997
OPERATING REVENUE......................   $  86,271   $  87,184   $  89,911    $  95,228   $ 358,594
OPERATING INCOME.......................   $  21,910   $  22,980   $  24,267    $  21,104   $  90,261
NET INCOME.............................   $  12,730   $  13,351   $  14,099    $  12,295   $  52,475
BASIC EARNINGS PER SHARE OF
  COMMON STOCK.........................   $    0.07   $    0.08   $    0.09    $    0.08   $    0.32
DILUTED EARNINGS PER SHARE OF
  COMMON STOCK.........................   $    0.07   $    0.08   $    0.09    $    0.08   $    0.32
 
1996
Operating Revenue......................   $  76,821   $  78,194   $  79,823    $  84,566   $ 319,404
Operating Income.......................   $  19,164   $  20,246   $  21,322    $  21,229   $  81,961
Net Income.............................   $  11,134   $  11,763   $  12,387    $  12,321   $  47,605
Basic Earnings Per Share of Common
  Stock................................   $    0.07   $    0.07   $    0.07    $    0.07   $    0.28
Diluted Earnings Per Share of Common
  Stock................................   $    0.07   $    0.07   $    0.07    $    0.07   $    0.28
</TABLE>
 
                                      F-51
<PAGE>
REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Shareholder of Nielsen Media Research, Inc.
 
Our report on the consolidated financial statements of Nielsen Media Research,
Inc. as of December 31, 1997 and 1996, and for each of the three years in the
period ended December 31, 1997, is included in this Form 10 on page F-35 of the
Information Statement. In connection with our audits of such financial
statements, we have also audited the related financial statement schedule set
forth on page F-53 of this Form 10.
 
In our opinion, the financial statement schedule referred to above when
considered in relation to the basic financial statements taken as a whole,
presents fairly, in all material respects, the information required to be
included therein.
 
                                          /s/ Coopers & Lybrand L.L.P.
 
                                          COOPERS & LYBRAND L.L.P.
 
New York, New York
March 30, 1998
 
                                      F-52
<PAGE>
                          NIELSEN MEDIA RESEARCH, INC.
                 SCHEDULE II--VALUATION AND QUALIFYING ACCOUNTS
              FOR THE YEAR ENDED DECEMBER 31, 1997, 1996 AND 1995
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                       COL. A                            COL. B       COL. C       COL. D       COL. E
- -----------------------------------------------------  -----------  -----------  -----------  -----------
                                                                     ADDITIONS
                                                       BALANCE AT   CHARGED TO                  BALANCE
                                                        BEGINNING    COSTS AND                  AT END
                     DESCRIPTION                        OF PERIOD    EXPENSES    DEDUCTIONS    OF PERIOD
- -----------------------------------------------------  -----------  -----------  -----------  -----------
<S>                                                    <C>          <C>          <C>          <C>
ALLOWANCE FOR DOUBTFUL ACCOUNTS:
  For the Year Ended December 31, 1997...............   $   3,773    $     328    $     807    $   3,294
                                                       -----------  -----------  -----------  -----------
                                                       -----------  -----------  -----------  -----------
 
  For the Year Ended December 31, 1996...............   $   3,311    $     900    $     438    $   3,773
                                                       -----------  -----------  -----------  -----------
                                                       -----------  -----------  -----------  -----------
 
  For the Year Ended December 31, 1995...............   $   2,644    $     664    $      (3)   $   3,311
                                                       -----------  -----------  -----------  -----------
                                                       -----------  -----------  -----------  -----------
</TABLE>
 
                                      F-53

<PAGE>
                                                                    EXHIBIT 99.2
 
                                                                          , 1998
 
To all Cognizant Stockholders:
 
    On            , 1998, the Board of Directors of Cognizant Corporation
declared a dividend of shares of IMS Health Incorporated to achieve the
reorganization of Cognizant as two separate companies.
 
    If you are a stockholder of Cognizant as of the close of business on
           , 1998, the record date for the dividend, certificates representing
shares in IMS HEALTH will be mailed to you automatically. For each share of
Cognizant you hold, you will receive one share of IMS HEALTH.
 
    Stock certificates representing your shares in IMS HEALTH will be sent to
you on or about            , 1998. The Cognizant certificates you currently hold
will represent your investment in the "new" Nielsen Media Research, Inc., which
is the new name for the former Cognizant Corporation.
 
    Shares of IMS HEALTH will trade "regular way" on the New York Stock Exchange
beginning            , 1998. The symbol for IMS HEALTH will be "RX" and the
symbol for the "new" Nielsen Media Research will be changed to "NSN".
 
    Detailed information on the reorganization plan and the businesses of IMS
HEALTH and Nielsen Media Research is contained in the accompanying document,
which we urge you to read carefully.
 
    The Board believes the reorganization will enhance management focus on each
business and allow the two companies to pursue opportunities that will improve
their competitive position, enhance their valuation and create wealth for
stockholders.
 
                                    Sincerely,
 
                                    Robert E. Weissman
 
                                    Chairman and Chief Executive Officer
 
                                    Cognizant Corporation


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