LORD ABBETT RESEARCH FUND INC
485A24F, 1995-05-12
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                                                   1933 Act File No. 33-47641
                                                    1940 Act File No. 811-6650


                        SECURITIES & EXCHANGE COMMISSION
                            Washington, D. C. 20549

                                   FORM N-1A

          REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 [X]
                       Post-Effective Amendment No. 5             [X]
                                      And

          REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT [X]
                                    OF 1940

                              AMENDMENT No. 5                     [X]

                        LORD ABBETT RESEARCH FUND, INC.
                Exact Name of Registrant as Specified in Charter

                     767 FIFTH AVENUE, NEW YORK, N.Y. 10153
                     Address of Principal Executive Office

                  REGISTRANT'S TELEPHONE NUMBER (212) 848-1800

                 Kenneth B. Cutler, Vice President & Secretary
                     767 FIFTH AVENUE, NEW YORK, N.Y. 10153
                    (Name and Address of Agent for Service)

It is proposed that this filing will become effective (check appropriate box)

     immediately on filing pursuant to paragraph (b) of Rule 485

     on (date) pursuant to paragraph (b) of Rule 485

     60 days after filing pursuant to paragraph (a) (1) of Rule 485

     on (date) pursuant to paragraph (a) (1) of Rule 485

 X   75 days after filing pursuant to paragraph (a) (2) of Rule 485
 -                                                                 

     on (date) pursuant to paragraph (a) (2) of Rule 485

If appropriate, check the following box:

this post-effective  amendment  designates a new effective date for a previously
filed post-effective amendment

In  accordance  with Rule 24f-2 under the  Investment  Company  Act of 1940,  an
indefinite  amount of Registrant's  shares of Lord Abbett Mid-Cap  Research Fund
series are being registered by this registration  statement under the Securities
Act of  1933.  Amount  of  Registration  Fee:  $500 for  Securities  Act of 1933
Registration.

Registrant  (Series 1) has registered an indefinite  amount of securities  under
the  Securities  Act of 1933  pursuant  to Rule 24f-  2(a) (1) and a Rule  24f-2
Notice for  Registrant's  (Series 1) most recent  fiscal year was filed with the
Commission on or about January 23, 1995.

                                      
<PAGE>



                                EXPLANATORY NOTE


     This  Post-Effective  Amendment No. 5 (the "Amendment") to the Registrant's
Registration  Statement  relates to Lord Abbett  Mid-Cap  Research  Fund,  a new
series of shares of the Registrant.

     The other series of shares of the Registrant is listed below and is offered
by the Prospectus in Part A of the Post- Effective Amendment to the Registrant's
Registration  Statement as  identified.  The  following is a separate  series of
shares of the Registrant.  This Amendment does not relate to, amend or otherwise
affect the  Prospectus  contained in the prior Post-  Effective  Amendment,  and
pursuant to Rule 485(d) under the  Securities  Act of 1933,  does not affect the
effectiveness of such Post-Effective Amendment.

                                                            Post-Effective
                                                            AMENDMENT NO.
                                                            --------------
                 Series 1                                        4


                        LORD ABBETT RESEARCH FUND, INC.
                                   FORM N-1A
                             Cross Reference Sheet
                         Post-Effective Amendment No. 5
                            Pursuant to Rule 481(b)


                  Form N-1A    Location In Prospectus or
                  ITEM NO.     STATEMENT OF ADDITIONAL INFORMATION

                  1           Cover Page
                  2           Fee Table
                  3 (a)       Financial  Highlights;  Performance
                  3 (b)       N/A 
                  4 (a) (i)   Cover Page
                  4 (a) (ii)  Investment  Objective;  How We Invest
                  4 (b) (c)   How We Invest
                  5 (a)(b)(c) Our Management;  Back Cover Page
                  5 (d)       N/A
                  5 (e)       Back  Cover Page
                  5 (f)       Our  Management  
                  5 (g)       N/A
                  5 A         Performance  
                  6 (a)       Cover  Page
                  6 (b)(c)(d) N/A
                  6 (e)       Cover Page
                  6 (f)(g)    Dividends, Capital Gains
                              Distributions and Taxes
                  7 (a)       Back Cover Page
                  7 (b)(c)(d)
                    (e) (f)   Purchases
                  8 (a)(b)(c)
                    (d)        Redemptions
                  9            N/A
                  10           Cover Page
<PAGE>

                  Form N-1A    Location In Prospectus or
                  ITEM NO.     STATEMENT OF ADDITIONAL INFORMATION

                  11           Cover Page - Table of Contents
                  12           N/A
                  13 (a)(b)(c)
                     (d)       Investment Objective and Policies
                  14           Trustees and Officers
                  15 (a) (b)   N/A
                  15 (c)       Trustees and  Officers
                  16 (a) (i)  Investment  Advisory
                               and Other  Services
                  16 (a) (ii)  Trustees  and Officers 
                  16 (a) (iii) Investment Advisory and Other Services 
                  16 (b)       Investment Advisory and Other Services
                  16 (c) (d) (e)
                     (g)       N/A
                  16 (f)       Purchases, Redemptions
                               and Shareholder Services
                  16 (h)       Investment Advisory and Other Services
                  16 (i)       N/A
                  17 (a)       Portfolio Transactions
                  17 (b)       N/A
                  17 (c)       Portfolio Transactions
                  17 (d)       Portfolio Transactions
                  17 (e)       N/A
                  18 (a)       Cover Page
                  18 (b)       N/A
                  19 (a) (b)   Purchases, Redemptions
                               and Shareholder Services; Notes
                               to Financial Statements
                  19 (c)       N/A
                  20           Taxes
                  21 (a)       Purchases, Redemptions
                               and Shareholder Services
                  21 (b) (c)   N/A
                  22 (a)       N/A
                  22 (b)       Past Performance
                  23           Financial Statements; Supplementary
                               Financial Information

                                                      

<PAGE>

LORD ABBETT MID-CAP RESEARCH FUND
THE GENERAL MOTORS BUILDING
767 FIFTH AVENUE
NEW YORK, NY 10153-0203
800-426-1130


LORD ABBETT  MID-CAP  RESEARCH  FUND (THE  "SERIES") IS A  DIVERSIFIED  SEPARATE
SERIES  OF LORD  ABBETT  RESEARCH  FUND,  INC.  (WE OR THE  FUND),  AN  OPEN-END
MANAGEMENT  INVESTMENT  COMPANY  INCORPORATED  IN MARYLAND ON APRIL 6, 1992. THE
FUND  CURRENTLY  CONSISTS  OF TWO  SERIES.  ONLY  SHARES OF THE SERIES ARE BEING
OFFERED IN THIS PROSPECTUS.

     THE SERIES  INVESTMENT  OBJECTIVE IS TO SEEK CAPITAL  APPRECIATION  THROUGH
INVESTMENTS  PRIMARILY IN EQUITY SECURITIES WHICH ARE BELIEVED TO BE UNDERVALUED
IN THE  MARKETPLACE.  IN ITS SEARCH FOR VALUE,  THE SERIES SEEKS COMPANIES WHICH
ARE PRIMARILY MIDDLE-SIZED, BASED ON THE VALUE OF THEIR OUTSTANDING STOCK. THERE
CAN BE NO ASSURANCE THAT THE SERIES WILL ACHIEVE ITS OBJECTIVE.

     THE DIRECTORS MAY PROVIDE FOR ADDITIONAL  SERIES FROM TIME TO TIME.  WITHIN
EACH SERIES, THE FREELY  TRANSFERABLE SHARES WILL HAVE EQUAL RIGHTS WITH RESPECT
TO DIVIDENDS, ASSETS, LIQUIDATION AND VOTING.

     THIS PROSPECTUS SETS FORTH CONCISELY THE INFORMATION  ABOUT THE SERIES THAT
A PROSPECTIVE  INVESTOR  SHOULD KNOW BEFORE  INVESTING.  ADDITIONAL  INFORMATION
ABOUT THE FUND AND THE SERIES HAS BEEN FILED WITH THE  SECURITIES  AND  EXCHANGE
COMMISSION  AND IS  AVAILABLE  UPON REQUEST  WITHOUT  CHARGE.  THE  STATEMENT OF
ADDITIONAL INFORMATION IS INCORPORATED BY REFERENCE INTO THIS PROSPECTUS AND MAY
BE OBTAINED,  WITHOUT  CHARGE,  BY WRITING TO THE FUND OR BY CALLING THE FUND AT
800-874-3733.  ASK FOR PART B OF THE  PROSPECTUS  THE  STATEMENT  OF  ADDITIONAL
INFORMATION.

     THE DATE OF THIS  PROSPECTUS,  AND THE DATE OF THE  STATEMENT OF ADDITIONAL
INFORMATION, IS JULY __, 1995.


PROSPECTUS

INVESTORS SHOULD READ AND RETAIN THIS PROSPECTUS.  SHAREHOLDER  INQUIRIES SHOULD
BE MADE IN  WRITING TO THE FUND OR BY  CALLING  800-821-5129.  YOU CAN ALSO MAKE
INQUIRIES THROUGH YOUR BROKER-DEALER.


               CONTENTS                      PAGE

        1       Investment Objectives        2

        2       Fee Table                    2

        3       How We Invest                2

        4       Purchases                    4

        5       Our Management               5

        6       Dividends, Capital Gains
                Distributions and Taxes      5

        7       Redemptions                  6

        8       Performance                  7


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 PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.
THIS FUND IS SOLD ONLY IN NEW YORK.


<PAGE>



1    INVESTMENT OBJECTIVE
     --------------------
The investment  objective of the Series is to seek capital  appreciation through
investments,   primarily  in  equity  securities,   which  are  believed  to  be
undervalued in the marketplace.

2    FEE TABLE
     ---------
A summary of  expenses of the Series is set forth in the table below in order to
provide  a  better  understanding  of  such  expenses.  The  example  is  not  a
representation  of past or future expenses.  Actual expenses may be more or less
than those shown.

<TABLE>
<CAPTION>
<S>                                     <C>
SHAREHOLDER TRANSACTION EXPENSES
(AS A PERCENTAGE OF OFFERING PRICE)
Maximum Sales Load(1) on Purchases
(See Purchases)                         None
Redemption Fee                          None
- -----------------------------------------------
ANNUAL FUND OPERATING EXPENSES
(AS A PERCENTAGE OF AVERAGE NET ASSETS)
Management Fees (See Our Management)    .00%(2)
12b-1 Fees                              None
Other Expenses (See Our Management)     .00%(2)
- -----------------------------------------------
Total Operating Expenses                .00%(2)
===============================================
Example: Assume annual return of the Series is 5% and there is no change in the
- -------  level of expenses described below. For every $1,000 invested, with re-
         investment of all distributions, you would pay the following total ex-
         penses if you closed your account after the number of years indicated.

                1 year(3)                3 years(3)
                ---------                ----------
                $0                           $0
<FN>
(1)  Sales load is referred to as sales charge throughout this Prospectus.
(2)  Although  not  obligated  to,  Lord,  Abbett & Co.  intends  to  waive  its
     management fee and  subsidized  the expenses of the Series.  The management
     fee for the Series  would be .75% and other  expenses  are  estimated to be
     .40% for the Series for a full fiscal year absent such waiver and  subsidy.
(3)  These  figures  reflect a  management  fee waiver and expense  subsidy from
     Lord,  Abbett & Co.  These  expenses  without  such  waiver and subsidy are
     estimated to be $12 and $38, respectively, for the Series.
</FN>
</TABLE>

3    HOW WE INVEST
     -------------
The Series invest primarily in common stocks (including  securities  convertible
onto common stocks) of mid-cap companies,  defined for this purpose as companies
whose  outstanding  equity  securities have an aggregate market value of between
$200 million and $5  billion. Under  normal  circumstances,  at least 65% of the
Series'  total assets will  consist of  investments  made in mid-cap  companies,
determined  at the time of  purchase.  Stocks  are  selected  based  on  capital
appreciation   potential,   without  regard  to  current  income,   utilizing  a
value-based, disciplined investment process that seeks to identify and invest in
undervalued securities. This investment process consists of three steps.
     First, quantitative research is used to identify a universe of stocks which
are most  cheaply  priced.  From this  universe  of stocks  the most  attractive
companies are set aside as candidates for further analysis.
     In the second step of the process,  fundamental  research seeks to identify
candidates likely to produce attractive  investment returns over a standard time
period. This is done, for example, by analyzing the dynamics of each company and
its business  strategies  and assessing  management's  ability to execute these
strategies, given its resources.
     The third part of the  investment  process is an analysis of the  company's
prospects  in view of our  economic  outlook for a standard  time  period.  This
outlook  is   developed   periodically   throughout   the  year,   taking   into
consideration,  for  example,  such  factors as (i) the level and  direction  of
inflation , interest  rates,  and general  economic  activity;  (ii)  government
monetary and fiscal policies;  (iii) trends in profitability of economic sectors
and (iv) supply/demand balance for financial assets.
     The  investment  portfolio  of the Series  will be  diversified  among many
issuers  representing  many  different  industries.  The portfolio of the Series
reflects the collective  judgment of the Research  Department of Lord,  Abbett &
Co. ("Lord  Abbett") as to what  securities  represent  the greatest  investment
value pursuant to the Series' investment objective and policies.  At the time of
purchase, securities selected for the Series' portfolio may be largely neglected
by the investment community or, if widely followed,  they may be out of favor or
at least controversial.

<PAGE>

     FOREIGN  INVESTMENTS.  Up to 35% of the  Series' net assets (at the time of
investment) may be invested in foreign  securities (of the type described above)
which are primarily traded in foreign countries.
     FOREIGN CURRENCY HEDGING TECHNIQUES. The Series may utilize various foreign
currency hedging techniques described below.
     A forward foreign currency  contract  involves an obligation to purchase or
sell a specific amount of a currency at a set price on a future date. The Series
may  enter  into  forward   foreign   currency   contracts   in  primarily   two
circumstances.  First,  when the Series desires to "lock in" the U.S.  dollar pr
ice of the  security,  by entering  into a forward  contract for the purchase or
sale of the amount of  foreign  currency  involved  in the  underlying  security
transaction,  the  Series  will be able  to  protect  against  a  possible  loss
resulting  from an adverse change in the  relationship  between the U.S. dollar
and the subject foreign  currency during the period between the date of purchase
or sale and the date of settlement.
     Second,  when Fund  management  believes  that the currency of a particular
foreign  country may suffer a decline  against the U.S.  dollar,  the Series may
enter  into  a  forward   contract  to  sell  the  amount  of  foreign  currency
approximating  the  value  of  some  or all of a  Series'  portfolio  securities
denominated in such foreign currency or, in the alternative, a Series may use a
cross-currency-hedging  technique whereby it enters into such a forward contract
to sell  another  currency  (obtained  in exchange  for the  currency  which the
portfolio  securities are  denominated in if such securities are sold) which it
expects to decline in a similar manner but which has a lower  transaction  cost.
Precise  matching  of the  forward  contract  and the  value  of the  securities
involved will  generally not be possible.
     The Series also may purchase foreign currency put options and write foreign
currency call options on U.S. exchanges or U.S.  over-the-counter markets (O-T-C
options are generally  less liquid and involve issuer credit risk). A put option
gives the Series, upon payment of a premium, the right to sell a currency at the
exercise  price until the  expiration of the option and serves to insure against
adverse currency price movements in the underlying  portfolio assets denominated
in that currency.  The premiums paid for such foreign  currency put options will
not exceed 5% of the net assets of the Series.
     Unlisted  options  together with other illiquid  securities may comprise no
more than 15% of the Series' net assets.
     A foreign  currency call option  written by the Series gives the purchaser,
upon payment of a premium,  the right to purchase  from the Series a currency at
the exercise  price until the  expiration of the option.  The Series may write a
call option on a foreign  currency only in conjunction with a purchase of a put
option on that  currency.  Such a  strategy  is  designed  to reduce the cost of
downside currency protection by limiting currency  appreciation  potential.  The
face value of such writing or cross-hedging (described above) may not exceed 90%
of the value of the securities  denominated in such currency (a) invested in by
the Series to cover such call writing or (b) to be crossed.

OTHER  POLICIES.  The Series may invest up to 15% of its net assets in  illiquid
securities.  Securities  determined  by the  Directors to be liquid  pursuant to
Securities and Exchange  Commission Rule 144A will not be subject to this limit.
Investments by the Series in Rule 144A  securities  initially  deter mined to be
liquid could have the effect of diminishing  the level of the Series'  liquidity
during periods of decreased market interest in such securities.  Under the Rule,
a qualifying  unregistered  security may be resold to a qualified  institutional
buyer without  registration and without regard to whether the seller originally
purchased the security for investment.
     The Series may deal in options on securities,  and securities indexes,  and
financial  futures  transactions,  including options on financial  futures.  The
Series may write  (sell)  covered  call options and secured put and call options
provided that no more than 5% of its net assets (at the time of purchase) may be
invested in premiums on such options.
     The Series is not  currently  employing  any of the options  and  financial
futures transactions described above.


<PAGE>

     The Series may engage in (a) investing in closed-end  investment companies,
(b) lending of its portfolio securities to broker-dealers on a secured basis and
(c)  investing in rights and warrants to purchase  securities  (included  within
these purchases but not exceeding 2% of the value of its assets, may be warrants
which  are not  listed on the New York or  American  Stock  Exchanges),  but the
Series has no present  intention  to commit more than 5% of gross  assets to any
one of these three identified practices.
     The  Series  will not  borrow  money,  except as a  temporary  measure  for
extraordinary  or  emergency  purposes and then not in excess of 5% of its gross
assets at the lower of cost or market value.
     The Series may invest,  from time to time, in debt  securities.  Also,  for
temporary defensive purposes or to create reserve purchasing power pending other
investments, the Series may invest in high-quality,  short-term debt obligations
of banks,  corporations  or the U.S.  Government of the type normally owned by a
money market fund.
     The Series will not change its  investment  objective  without  shareholder
approval.  If the Series determines that its objective can best be achieved by a
substantive change in investment policy or strategy,  the Series may make such a
change without shareholder approval by disclosing it in the prospectus.

RISK FACTORS.  If the Series remains small,  there is risk that  redemptions may
(a)  cause  portfolio  securities  to be sold  prematurely  (at a loss or  gain,
depending  upon the  circumstances)  or (b)  hamper or  prevent  a  contemplated
portfolio security purchase.

     FOREIGN  SECURITIES.  Securities  markets of foreign countries in which the
Series may invest  generally are not subject to the same degree of regulation as
the U.S.  markets and may be more  volatile  and less liquid than the major U.S.
markets.  There may be less  publicly-available  information on  publicly-traded
companies, banks and governments in foreign countries than generally is the case
for such entities in the United States. The lack of uniform accounting standards
and practices  among  countries  impairs the validity of direct  comparisons  of
valuation  measures (such as price/earnings  ratios) for securities in different
countries.  Other  considerations  include  political  and  social  instability,
expropriation,  higher transaction  costs,  currency  fluctuations,  withholding
taxes  that  cannot be  passed  through  as a tax  credit  to  shareholders  and
different securities settlement  practices.  Foreign securities may be traded on
days that the Series does not value its portfolio securities,  and, accordingly,
the Series net asset value may be significantly affected.

     Although the Series invests primarily in middle-sized companies, the Series
also may invest,  from time to time, in stocks of  large-sized  and  small-sized
companies  guided  by  the  policies  mentioned  above.  Stock  prices  of  such
small-sized  companies may be more volatile than those of large and middle-sized
companies.
     Convertible bonds and convertible-preferred stocks tend to be more volatile
than  straight  bonds but less  volatile  and more income  producing  than their
underlying common stocks.


4    PURCHASES
     ---------

Our shares may only be  purchased  by  employees  and  partners of Lord  Abbett,
directors  (trustees) of Lord Abbett-managed  funds and spouses and other family
members of such employees,  partners and directors (trustees). All shares may be
purchased  at the net asset  value per share  next  computed  after the order is
received by Lord Abbett.  The minimum initial  investment is $1,000.  Subsequent
investments may be made in any amount. Place your order with Lord Abbett or send
it to Lord Abbett  Research Fund, Inc. (P.O. Box 419100,  Kansas City,  Missouri
64141).
     The net asset value of our shares is  calculated  every  business day as of
the close of the New York  Stock  Exchange  (NYSE),  by  dividing  net assets by
shares  outstanding.  Securities  in the  Series  portfolio  are valued at their
market value as more fully described in the Statement of Additional Information.
A  business  day is a day on  which  the NYSE is open  for  trading.  We are not
obligated  to  maintain  the  offering  or its  terms  and the  offering  may be
suspended,  changed or withdrawn.  Lord Abbett  reserves the right to reject any
order. Certificates representing

<PAGE>

shares of the Fund will not be issued.  This will  relieve  shareholders  of the
responsibility  and inconvenience of safekeeping share certificates and save the
Fund  unnecessary  expense.  If  you  have  any  questions,  call  the  Fund  at
800-821-5129.
     TELEPHONE EXCHANGE  PRIVILEGE:  Shares may be exchanged,  without a service
charge,  for those of any other Lord  Abbett-sponsored  fund except for (i) Lord
Abbett Equity Fund,  Lord Abbett  Series Fund and Lord Abbett  Counsel Group and
(ii) certain tax-free single-state series where the exchanging  shareholder is a
resident  of a state in which such  series is not  offered  for sale  (together,
Eligible Funds).
     You or YOUR REPRESENTATIVE WITH PROPER IDENTIFICATION can instruct the Fund
to exchange shares by telephone.  Shareholders  have this privilege  unless they
refuse it in  writing.  The Fund will not be liable for  following  instructions
communicated  by telephone  that it  reasonably  believes to be genuine and will
employ reasonable  procedures to confirm that instructions received are genuine,
including  requesting  proper   identification,   and  recording  all  telephone
exchanges.   Instructions   must  be   received  by  the  Fund  in  Kansas  City
(800-521-5315)  prior to the  close of the NYSE to obtain  each  funds net asset
value per share on that day.  Expedited  exchanges by telephone may be difficult
to  implement  in times of  drastic  economic  or market  change.  The  exchange
privilege  should  not be used to take  advantage  of  short-term  swings in the
market.  The Fund  reserves the right to terminate or limit the privilege of any
shareholder who makes frequent exchanges.  The Fund can revoke the privilege for
all  shareholders  upon 60 days prior written notice. A prospectus for the other
Lord Abbett-sponsored fund selected by you should be obtained and read before an
exchange.  Exercise  of the  Exchange  Privilege  will be  treated as a sale for
federal income tax purposes and, depending on the circumstances,  a capital gain
or loss may be recognized.


5    OUR MANAGEMENT
     --------------

Our business is managed by our officers on a day-to-day  basis under the overall
direction  of our Board of  Directors  with the  advice of Lord  Abbett  (herein
referred to as management). We employ Lord Abbett as investment manager pursuant
to a Management  Agreement.  Lord Abbett has been an investment manager for over
60 years and currently  manages  approximately $16 billion in a family of mutual
funds and other advisory accounts.  Under the Management Agreement,  Lord Abbett
is  obligated  to provide the Series with  investment  management  services  and
executive and other  personnel,  pay the remuneration of our officers and of our
directors affiliated with Lord Abbett,  provide us with office space and pay for
ordinary  and  necessary  office and  clerical  expenses  relating to  research,
statistical  work and  supervision  of the Series  portfolio  and certain  other
costs.   Lord  Abbett   provides   similar   services  to  fifteen   other  Lord
Abbett-sponsored  funds having  various  investment  objectives and also advises
other investment clients.  John J. Walsh, Jr., Lord Abbett partner for over five
years, is primarily  responsible for the day-to-day management of the Series and
has been since inception.  Mr. Walsh delegates management duties with respect to
the  Series  to a  committee  consisting,  at any  time,  of three  Lord  Abbett
employees from the Research Department.  The members of the committee,  who also
may be officers of the Fund,  have  staggered  terms to assure  continuity and a
forum for  different  judgments  as to what  securities  represent  the greatest
investment value for the Series.
     Under the Management Agreement,  the Series is obligated to pay Lord Abbett
a monthly  fee based on  average  daily net  assets for each month at the annual
rate of .75%. Due to the management fee waiver by Lord Abbett, the effective fee
payable to Lord Abbett by the Series as a percentage of average daily net assets
is expected  to be at the annual  rate of zero  percent for the period from July
27, 1995 (commencement of operations) through November 30, 1995. In addition, we
pay all  expenses  not  expressly  assumed by Lord  Abbett.  The Series ratio of
expenses,  including  management  fee  expenses,  to average net assets for such
period is expected to be zero percent.

<PAGE>

6    DIVIDENDS, CAPITAL GAINS DISTRIBUTIONS AND TAXES
     ------------------------------------------------

With respect to the Series,  dividends from taxable net investment income may be
taken in cash or invested  in  additional  shares at net asset value  (without a
sales charge) and will be paid to shareholders annually in December.
     A  long-term  capital  gains  distribution  is made when the Series has net
profits during the year from sales of securities which it has held more than one
year. If the Series has realized net short-term capital gains, they also will be
distributed.  Any capital gains distributions will be made annually in December.
They may be taken in cash or invested in more shares at net asset value  without
a sales charge.
     Dividends and  distributions  declared in October,  November or December of
any year will be treated for federal income tax purposes as having been received
by shareholders in that year if they are paid before February 1 of the following
year. A supplemental capital gains distribution also may be paid in December.
     The Series intends to meet the requirements of Subchapter M of the Internal
Revenue Code. The Series will try to distribute to  shareholders  all of its net
investment  income and net realized  capital gains, so as to avoid the necessity
of paying federal income tax.  Shareholders,  however, must report dividends and
capital gains  distributions as taxable income.  Distributions  derived from net
long-term   capital   gains  which  are   designated  by  us  as  capital  gains
distributions  will be taxable  to  shareholders  as  long-term  capital  gains,
whether  received in cash or shares,  regardless of how long a taxpayer has held
the shares.  Under current law, net long-term  capital gains of individuals  and
corporations are taxed at the rates  applicable to ordinary income,  except that
the maximum rate for long-term capital gains for individuals is 28%.  Provisions
of the  Contract  with  America  Tax  Relief Act of 1995,  that were  pending in
Congress  as of the date of this  Prospectus,  would have the effect of reducing
the federal income tax rate on capital gains.
     Shareholders  may be subject to a $50 penalty  under the  Internal  Revenue
Code and we may be required to withhold and remit to the U.S. Treasury a portion
(31%)  of  any  redemption  or  repurchase  proceeds  and  of  any  dividend  or
distribution on any account,  where the payee (shareholder)  failed to provide a
correct   taxpayer   identification   number   or  to  make   certain   required
certifications.
     Limitations  imposed by the Internal  Revenue Code on regulated  investment
companies may restrict the Series ability to engage in  transactions in options,
forward contracts and cross hedges.
     We will inform  shareholders of the federal tax status of each dividend and
distribution after the end of each calendar year.
     Shareholders should consult their tax advisers concerning  applicable state
and local taxes as well as on the tax  consequences  of gains or losses from the
redemption or exchange of our shares.


7    REDEMPTIONS
     -----------
To obtain the proceeds of an  expedited  redemption  of $50,000 or less,  you or
your  representative  with proper  identification  can telephone the Fund.  This
privilege is automatically  extended to all  shareholders.  The Fund will not be
liable for following  instructions  communicated by telephone that it reasonably
believes  to be genuine  with  respect to the Fund and,  therefore,  will employ
reasonable  procedures  to  confirm  that  instructions  received  are  genuine,
including requesting proper identification,  recording all telephone redemptions
and mailing the proceeds only to the named  shareholder at the address appearing
on the  account  registration.
     If you cannot use the expedited  redemption  procedures  described above to
redeem shares  directly,  send your request to Lord Abbett  Research Fund,  Inc.
(P.O. Box 419100,  Kansas City,  Missouri 64141) with signature(s) and any legal
capacity of the  signer(s)  guaranteed by an eligible  guarantor.
     Under certain  circumstances and subject to prior written notice, our Board
of Directors  may  authorize  redemption  of all of the shares in any account in
which there are fewer than 25 shares.

<PAGE>

8    PERFORMANCE
     -----------
We calculate  our average  annual total return for the Series for a given period
by  determining  an annual  compounded  rate that would  cause the  hypothetical
initial  investment  made on the  first day of the  period  to equal the  ending
redeemable value. The calculation  assumes for the period a $1,000  hypothetical
initial  investment in the Series,  the  reinvestment  of all income and capital
gains distributions on the reinvestment dates at the prices calculated as stated
in the  Prospectus,  and a  complete  redemption  at the  end of the  period  to
determine the ending  redeemable  value.  Further  information  about the Series
performance  will be in its annual report to shareholders  which may be obtained
without charge.

UNDERWRITER AND INVESTMENT MANAGER
Lord, Abbett & Co.
The General Motors Building
767 Fifth Avenue
New York, New York 10153-0203
212-848-1800

CUSTODIAN
Morgan Guaranty Trust Company of New York
60 Wall Street
New York, New York 10005

TRANSFER AGENT AND DIVIDEND DISBURSING AGENT
United Missouri Bank of Kansas City, N.A.
Tenth and Grand
Kansas City, Missouri 64141

SHAREHOLDER SERVICING AGENT
DST Systems, Inc.
P.O. Box 419100
Kansas City, Missouri 64141
800-821-5129

AUDITORS
Deloitte & Touche LLP
<PAGE>
 

LORD ABBETT
STATEMENT OF ADDITIONAL INFORMATION                              JULY __, 1995


                                  LORD ABBETT
                              RESEARCH FUND, INC.

- --------------------------------------------------------------------------------


This Statement of Additional  Information is not a Prospectus.  A Prospectus may
be  obtained  from your  securities  dealer or from  Lord,  Abbett & Co.  ("Lord
Abbett") at The General Motors  Building,  767 Fifth Avenue,  New York, New York
10153-0203.  This Statement  relates to, and should be read in conjunction with,
the Prospectus dated July __, 1995.

Lord  Abbett  Research  Fund,  Inc.  (sometimes  referred  to as the "Fund") was
incorporated  under Maryland law on April 6, 1992. The Fund's Board of Directors
has  authority  to  classify  its shares of common  stock into  separate  Series
without further action by shareholders.  To date,  50,000,000 shares of Series 1
and 50,000,000 shares of a new Series - Lord Abbett Mid-Cap Research Fund - have
been  designated  by the Board of  Directors.  Although no present  plans exist,
further series may be added in the future.  The  Investment  Company Act of 1940
(the "Act") requires that where more than one series exists, each series must be
preferred over all other series with respect to assets specifically allocated to
such series.  Only Lord Abbett Mid-Cap  Research Fund (sometimes  referred to as
the "Series" or "we") is described in this Statement of Additional Information.

Rule 18f-2 under the Act  provides  that any matter  required to be submitted by
the provisions of the Act or applicable state law, or otherwise,  to the holders
of the outstanding voting securities of an investment company, such as the Fund,
shall not be deemed to have been  effectively  acted upon unless approved by the
holders of a majority of the outstanding  shares of each Series affected by such
matter. Rule 18f-2 further provides that a Series shall be deemed to be affected
by a matter  unless the  interests of each Series in the matter are identical or
the matter  does not affect  any  interest  of such  Series.  However,  the Rule
exempts from these  separate  voting  requirements  the selection of independent
public  accountants,  the approval of principal  distributing  contracts and the
election of directors.

Shareholder  inquiries  should  be made by  writing  directly  to the Fund or by
calling 800-821-5129. In addition, you can make inquiries through Lord Abbett.


           TABLE OF CONTENTS                                            PAGE

        1.       Investment Objective and Policies                            2

        2.       Directors and Officers                                       4

        3.       Investment Advisory and Other Services                       5

        4.       Portfolio Transactions                                       5

        5.       Purchases, Redemptions
                 and Shareholder Services                                     6

        6.       Past Performance                                             7

        7.       Taxes                                                        7

        8.       Information About The Fund                                   8




<PAGE>



                                       1.
                       Investment Objectives and Policies

FUNDAMENTAL  INVESTMENT  RESTRICTIONS.  The  Series'  investment  objective  and
policies are described in the Prospectus  under "How We Invest".  In addition to
those  policies  described in the  Prospectus,  we are subject to the  following
fundamental  investment  restrictions  which  cannot be  changed  for the Series
without the  approval  of the  holders of a majority  of the Series'  respective
shares.  The Series may not:  (1) borrow  money  (except that (i) the Series may
borrow  from banks (as defined in the Act) in amounts up to 33 1/3% of its total
assets  (including  the  amount  borrowed),  (ii) the Series may borrow up to an
additional 5% of its total assets for temporary  purposes,  (iii) the Series may
obtain such short-term credit as may be necessary for the clearance of purchases
and sales of portfolio securities and (iv) the Series may purchase securities on
margin to the extent  permitted by applicable law); (2) pledge its assets (other
than to secure  such  borrowings  or, to the  extent  permitted  by the  Series'
investment  policies as set forth in its  prospectus and statement of additional
information,  as they may be  amended  from  time to time,  in  connection  with
hedging   transactions,   short  sales,   when-issued  and  forward   commitment
transactions and similar investment strategies);  (3) engage in the underwriting
of securities  except  pursuant to a merger or acquisition or to the extent that
in connection with the disposition of its portfolio  securities it may be deemed
to be an  underwriter  under federal  securities  laws;  (4) make loans to other
persons,  except that the  acquisition of bonds,  debentures or other  corporate
debt  securities and  investment in government  obligations,  commercial  paper,
pass-through   instruments,   certificates  of  deposit,   bankers  acceptances,
repurchase  agreements or any similar  instruments shall not be deemed to be the
making of a loan,  and except  further  that the  Series may lend its  portfolio
securities,  provided that the lending of portfolio  securities may be made only
in accordance  with  applicable  law and the guidelines set forth in the Series'
prospectus and statement of additional information,  as they may be amended from
time to time;  (5) buy or sell real estate (except that the Series may invest in
securities directly or indirectly secured by real estate or interests therein or
issued  by  companies  which  invest  in  real  estate  or  interests  therein),
commodities or commodity contracts (except to the extent the Series may do so in
accordance  with  applicable  law and the Series'  prospectus  and  statement of
additional  information  as they may be amended  from time to time,  and without
registering as a commodity pool operator under the Commodity  Exchange Act); (6)
with respect to 75% of the gross  assets of the Series,  buy  securities  if the
purchase  would then cause it to (i) have more than 5% of its gross  assets,  at
market value at the time of  investment,  invested in the  securities of any one
issuer  except  securities  issued or  guaranteed  by the U.S.  Government,  its
agencies or instrumentalities or (ii) own more than 10% of the voting securities
of any issuer; (7) invest more than 25% of its assets, taken at market value, in
the securities of issuers in any particular  industry  (excluding  securities of
the U.S.  Government,  its agencies and  instrumentalities);or  (8) issue senior
securities to the extent such issuance would violate applicable law.

With respect to the restrictions mentioned herein, compliance therewith will not
be affected by change in the market  value of portfolio  securities  but will be
determined at the time of purchase or sale of such securities.

NON-FUNDAMENTAL INVESTMENT RESTRICTIONS. In addition to those policies described
in the Prospectus and the investment  restrictions above which cannot be changed
without  shareholder  approval,  we  also  are  subject  to the  following  non-
fundamental  investment  policies which may be changed by the Board of Directors
without  shareholder  approval.  The  Series may not:  (1) make  short  sales of
securities  or  maintain  a short  position  except to the extent  permitted  by
applicable  law;  (2) invest  knowingly  more than 15% of its net assets (at the
time of investment)  in illiquid  securities  (securities  qualifying for resale
under Rule 144A of the  Securities Act of 1933 ("Rule 144A") that are determined
by the  Directors,  or by Lord Abbett  pursuant to  delegated  authority,  to be
liquid are considered  liquid  securities);  (3) invest in securities  issued by
other  investment  companies  as defined in the Act,  except as permitted by the
Act; (4) purchase  securities of any issuer unless it or its  predecessor  has a
record of three years' continuous operation, except that the Series may purchase
securities  of such  issuers  through  subscription  offers  or other  rights it
receives  as a security  holder of  companies  offering  such  subscriptions  or
rights,  and such  purchases  will then be limited in the aggregate to 5% of the
Series' net assets at the time of investment;  (5) hold securities of any issuer
when more than 1/2 of 1% of the issuer's  securities are owned  beneficially  by
one or more of the Fund's  officers or directors  or by one or more  partners of
the Fund's  underwriter  or investment  adviser if these owners in the aggregate
own beneficially more than 5% of such securities; (6) invest in warrants, valued
at the  lower  of cost or  market,  to  exceed  5% of the  Series'  net  assets,
including  warrants not listed on the New York or American  Stock Exchange which
may not  exceed 2% of such net  assets;  or (7)  invest in real  estate  limited
partnership  interests  or  interest in oil,  gas or other  mineral  leases,  or
exploration  or  development  programs,  except  that the  Series  may invest in
securities  issued  by  companies  that  engage  in oil,  gas or  other  mineral
exploration or development activities.

                                       2

<PAGE>




INVESTMENT TECHNIQUES WHICH MAY BE USED BY THE SERIES

LENDING OF PORTFOLIO SECURITIES.  Although we have no current intention of doing
so in the foreseeable  future,  we may seek to earn income by lending  portfolio
securities.  Under present regulatory policies, such loans may be made to member
firms of the New York Stock  Exchange  ("NYSE")  and are  required to be secured
continuously  by collateral  consisting  of cash,  cash  equivalents,  or United
States Treasury bills maintained in an amount at least equal to the market value
of the securities  loaned.  We will have the right to call a loan and obtain the
securities loaned at any time upon five days' notice.  During the existence of a
loan we will  receive  the  income  earned  on  investment  of  collateral.  The
aggregate value of the securities  loaned will not exceed 5% of the value of the
Series' gross assets.

If the Series enters into repurchase agreements as provided in clause (4) above,
it will do so only with  those  primary  reporting  dealers  that  report to the
Federal  Reserve  Bank of New  York  and  with  the 100  largest  United  States
commercial  banks and the underlying  securities  purchased under the agreements
will consist only of those securities in which the Series otherwise may invest.

FOREIGN  CURRENCY  HEDGING  TECHNIQUES.  The Series may utilize  various foreign
currency hedging techniques described below,  including forward foreign currency
contracts and foreign currency put and call options.

FORWARD FOREIGN CURRENCY CONTRACTS. A forward foreign currency contract involves
an obligation to purchase or sell a specific amount of a specific  currency at a
set price at a future date.  The Series  expects to enter into  forward  foreign
currency contracts in primarily two  circumstances.  First, when the Fund enters
into a contract for the purchase or sale of a security  denominated in a foreign
currency,  it may desire to "lock in" the U.S. dollar price of the security.  By
entering  into a forward  contract  for the  purchase  or sale of the  amount of
foreign currency  involved in the underlying  security  transaction,  the Series
will be able to protect against a possible loss resulting from an adverse change
in the  relationship  between the U.S. dollar and the subject  foreign  currency
during the period  between the date the  security is  purchased  or sold and the
date on which payment is made or received.

Second,  when  management  believes  that the currency of a  particular  foreign
country may suffer a decline against the U.S. dollar,  the Series may enter into
a forward  contract  to sell the amount of foreign  currency  approximating  the
value of some or all of the Series'  portfolio  securities  denominated  in such
foreign  currency  or, in the  alternative,  the Series may use a  cross-hedging
technique  whereby it sells another currency which the Series expects to decline
in a similar way but which has a lower transaction cost. Precise matching of the
forward  contract  amount  and the  value of the  securities  involved  will not
generally be possible since the future value of such  securities  denominated in
foreign currencies will change as a consequence of market movements in the value
of those  securities  between the date the forward  contract is entered into and
the date it  matures.  The Series  does not  intend to enter  into such  forward
contracts under this second circumstance on a continuous basis.

FOREIGN  CURRENCY PUT AND CALL  OPTIONS.  The Series may also  purchase  foreign
currency put options and write foreign  currency call options on U.S.  exchanges
or U.S. over-the-counter markets. A put option gives the Series, upon payment of
a  premium,  the  right to sell a  currency  at the  exercise  price  until  the
expiration of the option and serves to insure  against  adverse  currency  price
movements in the underlying portfolio assets denominated in that currency.

Exchange-listed  options  markets in the United  States  include  several  major
currencies,  and trading may be thin and illiquid.  A number of major investment
firms  trade  unlisted  options  which are more  flexible  than  exchange-listed
options  with  respect  to strike  price and  maturity  date.  Unlisted  options
generally  are  available  in a wider  range  of  currencies.  Unlisted  foreign
currency  options are generally  less liquid than listed options and involve the
credit risk associated with the individual  issuer.  Unlisted options,  together
with other illiquid securities, are subject to a limit of 15% of the Series' net
assets.

A call  option  written by the Series  gives the  purchaser,  upon  payment of a
premium,  the right to purchase  from the Fund a currency at the exercise  price
until the  expiration  of the  option.  The Series may write a call  option on a
foreign  currency  only in  conjunction  with a purchase of a put option on that
currency.  Such a strategy is  designed to reduce the cost of downside  currency
protection by limiting currency appreciation  potential.  The face value of such
writing may not exceed 90% of the

                                       3

<PAGE>



value of the securities  denominated in such currency  invested in by the Series
or in such cross currency (referred to above) to cover such call writing.

The Fund's  custodian will segregate cash or liquid  high-grade  debt securities
belonging to the Series in an amount not less than that  required by SEC Release
10666 with respect to the Series' assets committed to (a) writing  options,  (b)
forward  foreign  currency  contracts  and (c) cross hedges  entered into by the
Series. If the value of the securities  segregated declines,  additional cash or
debt securities will be added on a daily basis (i.e., marked to market), so that
the  segregated  amount  will  not be  less  than  the  amount  of  the  Series'
commitments  with  respect to such written  options,  forward  foreign  currency
contracts and cross hedges. 2. Directors and Officers

The following  director is a partner of Lord,  Abbett & Co., The General  Motors
Building,  767  Fifth  Avenue,  New  York,  New  York  10153-0203.  He has  been
associated  with Lord  Abbett for over five years and is also an officer  and/or
director  or trustee of fifteen  other  Lord  Abbett-sponsored  funds.  He is an
"interested person" as defined in the Act.

Ronald P. Lynch, age 59, President and Chairman

The following  outside  directors are also  directors or trustees of the fifteen
other Lord Abbett-sponsored funds referred to above.

Hansel B. Millican, Jr.
Rochester Button Company
1100 Noblin Avenue
South Boston, Virginia

President and Chief Executive Officer of Rochester Button Company. Age 67.

Thomas J. Neff
Spencer Stuart & Associates
277 Park Avenue
New York, New York

President of Spencer Stuart & Associates,  an executive search  consulting firm.
Age 57.

No director and no officer of the Fund received  compensation  from the Fund for
acting in such capacity.

Except where indicated,  the following  executive officers of the Fund have been
associated  with Lord  Abbett for over five  years.  Of the  following,  Messrs.
Allen, Carper,  Cutler, Dow, Nordberg and Walsh are partners of Lord Abbett; the
others are employees:  Kenneth B. Cutler,  age 63, Vice President and Secretary;
Stephen I. Allen,  age 42,  Daniel E. Carper age, 43,  Robert S. Dow, age 50, E.
Wayne  Nordberg,  age 59, John J. Walsh,  age 59,  Jeffery H. Boyd, age 38 (with
Lord Abbett  since 1994 - formerly  partner in the law firm of Robinson & Cole),
John J. Gargana, Jr., age 64, Thomas F. Konop, age 53, Victor W. Pizzolato,  age
63, Vice Presidents; and Keith F. O'Connor, age 40, Treasurer.

The Fund's By-Laws provide that the Fund shall not hold an annual meeting of its
stockholders  in any year unless one or more matters are required to be acted on
by  stockholders  under the Act, or unless  called by a majority of the Board of
Directors  or by  stockholders  holding at least one quarter of the stock of the
Fund  outstanding  and  entitled  to vote at the  meeting.  When any such annual
meeting is held, the stockholders  will elect directors and vote on the approval
of the independent auditors of the Fund.


                                       4

<PAGE>

                                       3.
                     Investment Advisory and Other Services

     As described under "Our  Management" in the Prospectus,  Lord Abbett is the
     Fund's investment  manager.  The eight general partners of Lord Abbett, all
     of whom are officers and/or  directors of the Fund, are:  Stephen I. Allen,
     Daniel E. Carper,  Kenneth B. Cutler,  Robert S. Dow,  Thomas S. Henderson,
     Ronald P. Lynch,  E. Wayne Nordberg and John J. Walsh.  The address of each
     partner is The General  Motors  Building,  767 Fifth Avenue,  New York, New
     York 10153-0203.

     Deloitte & Touche LLP, Two World Financial Center, New York, New York 10281
     are the  independent  auditors  of the Fund and must be  approved  at least
     annually  by our Board of  Directors  to continue  in such  capacity.  They
     perform audit services for the Fund including the  examination of financial
     statements included in our annual report to shareholders.

     Morgan Guaranty Trust Company of New York ("Morgan"),  60 Wall Street,  New
     York,  New  York,  is  the  Fund's   custodian.   In  accordance  with  the
     requirements of Rule 17f-5, the Fund's directors have approved arrangements
     permitting  the Fund's  foreign  assets  not held by Morgan or its  foreign
     branches to be held by certain qualified foreign banks and depositories.

                                       4.
                             Portfolio Transactions

     Our policy is to have purchases and sales of portfolio  securities executed
     at the most  favorable  prices,  considering  all costs of the  transaction
     including   brokerage   commissions   and  dealer  markups  and  markdowns,
     consistent with obtaining best execution,  except to the extent that we may
     pay a higher  commission  as  described  below.  This  policy  governs  the
     selection of brokers or dealers and the market in which the  transaction is
     executed.   To  the  extent   permitted  by  law,  we  may,  if  considered
     advantageous, make a purchase from or sale to another Lord Abbett-sponsored
     fund without the intervention of any broker-dealer.

     We select broker-dealers on the basis of their professional  capability and
     the value and quality of their brokerage and research  services.  Normally,
     the  selection is made by our traders who are officers of the Fund and also
     are employees of Lord Abbett.  Our traders do the trading as well for other
     accounts --  investment  companies  (of which they are also  officers)  and
     other  investment  clients -- managed by Lord Abbett.  They are responsible
     for the negotiation of prices and commissions.

     A broker may receive a commission for portfolio  transactions exceeding the
     amount  another  broker would have charged for the same  transaction if our
     traders  determine that such amount of commission is reasonable in relation
     to the  value of the  brokerage  and  research  services  performed  by the
     executing  broker viewed in terms of either the  particular  transaction or
     its overall  responsibilities with respect to us and other accounts managed
     by Lord Abbett.  Brokerage  services may include such factors as showing us
     trading  opportunities  including  blocks,  willingness and ability to take
     positions in  securities,  knowledge  of a  particular  security or market,
     proven  ability  to  handle  a  particular  type  of  trade,   confidential
     treatment,  promptness,  reliability  and quotation  and pricing  services.
     Research  may include the  furnishing  of analyses  and reports  concerning
     issuers,  industries,  securities,  economic factors and trends,  portfolio
     strategy and the performance of accounts. Such research may be used by Lord
     Abbett in servicing all their  accounts,  and not all of such research will
     necessarily be used by Lord Abbett in connection with their services to us;
     conversely,  research  furnished  in  connection  with  brokerage  on other
     accounts  managed  by Lord  Abbett  may be used in  connection  with  their
     services to us, and not all of such  research will  necessarily  be used by
     Lord Abbett in connection  with their services to such other  accounts.  We
     have been  advised by Lord Abbett  that,  although  such  research is often
     useful,  no dollar  value can be  ascribed  to it nor can it be  accurately
     ascribed  or  allocated  to any  account  and it is  not a  substitute  for
     services provided by them to us; nor does it materially reduce or otherwise
     affect the  expenses  incurred  by Lord Abbett in the  performance  of such
     services.  We make no  commitments  regarding  the  allocation of brokerage
     business to or among dealers.

     If two or more  broker-dealers  are  considered  capable  of  offering  the
     equivalent likelihood of best execution, the broker-dealer who has sold our
     shares and/or shares of other Lord Abbett-sponsored funds may be preferred.


                                       5

<PAGE>



     If other  clients of Lord Abbett buy or sell the same  security at the same
     time as we do, transactions will, to the extent  practicable,  be allocated
     among all participating  accounts in proportion to the amount of each order
     and will be executed  daily until  filled so that each  account  shares the
     average price and commission cost of each day.

     If we tender portfolio  securities pursuant to a cash tender offer, we will
     seek to recapture  any fees or  commissions  involved by  designating  Lord
     Abbett  as our  agent so that the fees may be  passed  back to us. As other
     legally  permissible  opportunities come to our attention for the direct or
     indirect  recapture by us of brokerage  commissions or similar fees paid on
     portfolio  transactions,  our directors will determine whether we should or
     should not seek such recapture.

                                       5.
                             Purchases, Redemptions
                            and Shareholder Services

     Information  concerning  how we  value  our  shares  for the  purchase  and
     redemption of our shares is contained in the Prospectus  under  "Purchases"
     and "Redemptions", respectively.

     As disclosed in the Prospectus,  we calculate our net asset value as of the
     close of the New York Stock Exchange ("NYSE") on each day is a day that the
     NYSE is open for trading by dividing  our total net assets by the number of
     shares  outstanding  at the  time of  calculation.  The NYSE is  closed  on
     Saturdays  and  Sundays  and the  following  holidays  -- New  Year's  Day,
     Presidents' Day, Good Friday,  Memorial Day,  Independence  Day, Labor Day,
     Thanksgiving and Christmas.

     The Fund values its portfolio securities at market value as of the close of
     the NYSE. Market value will be determined as follows:  securities listed or
     admitted to trading  privileges on the New York or American  Stock Exchange
     or on the NASDAQ National Market System are valued at the last sales price,
     or, if there is no sale on that day,  at the mean  between the last bid and
     asked prices, or, in the case of bonds, in the over-the-counter  market if,
     in the  judgment  of the  Fund's  officers,  that  market  more  accurately
     reflects the market  value of the bonds.  Over-the-counter  securities  not
     traded on the NASDAQ  National Market System are valued at the mean between
     the last bid and asked prices.  Securities for which market  quotations are
     not available are valued at fair market value under procedures  approved by
     the Board of Directors.

     The maximum  offering  price of our shares on July __, 1995 was computed as
     follows (assuming no sales charge currently in effect):

     Maximum  offering price per share is equal to the net asset value per share
     (net assets divided by shares outstanding) .......................$10.00

     The Fund has entered into a  distribution  agreement with Lord Abbett under
     which Lord Abbett is obligated  to use its best efforts to find  purchasers
     for the  shares  of the Fund  and to make  reasonable  efforts  to sell the
     Series'  shares  so long  as,  in Lord  Abbett's  judgment,  a  substantial
     distribution can be obtained by reasonable efforts.

     As stated in the Prospectus, our shares may be purchased at net asset value
     only by directors (trustees) of the Lord Abbett- sponsored funds,  partners
     and employees of Lord Abbett,  and spouses and other family members of such
     directors (trustees), partners and employees.

     The right to redeem and receive  payment,  as described in the  Prospectus,
     may be  suspended  if the NYSE is closed  (except for weekends or customary
     holidays), trading on the NYSE is restricted or the Securities and Exchange
     Commission deems an emergency to exist.

     Our Board of Directors may authorize redemption of all of the shares in any
     account in which there are fewer than 25 shares.  Before  authorizing  such
     redemption,  the  Board  must  determine  that it is in our  economic  best
     interest or necessary to reduce  disproportionately  burdensome expenses in
     servicing shareholder accounts. At least 60 days' prior written notice will
     be given before any such  redemption,  during which time  shareholders  may
     avoid  redemption by bringing  their  accounts up to the minimum set by the
     Board.

                                       6

<PAGE>

                                       6.
                                Past Performance

     The Fund computes the average annual compounded rate of total return during
     specified  periods  that would  equate the initial  amount  invested to the
     ending  redeemable  value of such  investment by adding one to the computed
     average annual total return, raising the sum to a power equal to the number
     of years  covered  by the  computation  and  multiplying  the result by one
     thousand dollars,  which represents a hypothetical initial investment.  The
     calculation  assumes deduction of the maximum sales charge from the initial
     amount invested (in this case there is no sales charge) and reinvestment of
     all income  dividends and capital gains  distributions  on the reinvestment
     dates  at  prices  calculated  as  stated  in the  Prospectus.  The  ending
     redeemable value is determined by assuming a complete redemption at the end
     of the period(s) covered by the average annual total return computation.

     These figures represent past  performance,  and an investor should be aware
     that the investment  return and principal  value of a Fund  investment will
     fluctuate so that an investor's shares, when redeemed, may be worth more or
     less than their original cost.  Therefore,  there is no assurance that this
     performance will be repeated in the future.

                                       7.
                                     Taxes

     The value of any shares  redeemed by the Fund or otherwise sold may be more
     or less  than your tax basis in the  shares at the time the  redemption  or
     sale is made. Any gain or loss generally will be taxable for federal income
     tax  purposes.  Any loss  realized on the sale or redemption of Fund shares
     which you have held for six months or less will be treated for tax purposes
     as  a  long-term   capital  loss  to  the  extent  of  any  capital   gains
     distributions which you received with respect to such shares. Losses on the
     sale of  stock  or  securities  are not  deductible  if,  within  a  period
     beginning  30 days before the date of the sale and ending 30 days after the
     date  of  sale,  the  taxpayer   acquires  stock  or  securities  that  are
     substantially identical.

     The writing of call options and other  investment  techniques and practices
     which the Fund may utilize, as described above under "Investment Objectives
     and Policies," may create  "straddles" for United States federal income tax
     purposes  and may affect the  character  and timing of the  recognition  of
     gains and losses by the Fund. Such  transactions may increase the amount of
     short-term  capital gain  realized by the Fund,  which is taxed as ordinary
     income  when  distributed  to  shareholders.  Limitations  imposed  by  the
     Internal  Revenue Code on regulated  investment  companies may restrict the
     Fund's ability to engage in transactions in options.

     As described in the  Prospectus  under "How We Invest - Risk  Factors," the
     Fund may be subject to foreign  withholding  taxes which  would  reduce the
     yield on its investments.  Tax treaties  between certain  countries and the
     United States may reduce or eliminate such taxes.  It is expected that Fund
     shareholders  who are subject to United States  federal income tax will not
     be entitled to claim a federal  income tax credit or deduction  for foreign
     income taxes paid by the Fund.

     The Fund will be  subject  to a 4%  non-deductible  excise  tax on  certain
     amounts not distributed  (and not treated as having been  distributed) on a
     timely basis in accordance with a calendar-year  distribution  requirement.
     The Fund intends to distribute to shareholders each year an amount adequate
     to avoid the imposition of such excise tax. Dividends paid by the Fund will
     qualify for the dividends-received deduction for corporations to the extent
     they are derived from dividends paid by domestic corporations.

     Gains and losses  realized by the Fund on certain  transactions,  including
     sales of foreign debt securities and certain transactions involving foreign
     currency, will be treated as ordinary income or loss for federal income tax
     purposes to the extent,  if any, that such gains or losses are attributable
     to  changes  in  exchange  rates  for  foreign   currencies.   Accordingly,
     distributions  taxable as ordinary  income will include the net amount,  if
     any, of such foreign  exchange gains and will be reduced by the net amount,
     if any, of such foreign exchange losses.

     If the Fund purchases shares in certain foreign investment entities, called
     "passive foreign investment  companies," it may be subject to United States
     federal income tax on a portion of any "excess  distribution"  or gain from
     the  disposition  of such shares,  even if such income is  distributed as a
     taxable dividend by the Fund to its shareholders. Additional charges in the

                                       7

<PAGE>



     nature of interest may be imposed on either the Fund or its shareholders in
     respect of deferred taxes arising from such distributions or gains.

     If the Fund were to invest in a passive  foreign  investment  company  with
     respect  to which the Fund  elected  to make a  "qualified  electing  fund"
     election, in lieu of the foregoing requirements, the Fund might be required
     to include in income each year a portion of the  ordinary  earnings and net
     capital gains of the qualified  electing fund, even if such amount were not
     distributed to the Fund.

                                       8.
                           Information About the Fund

     The directors, trustees and officers of Lord Abbett-sponsored mutual funds,
     together with the partners and  employees of Lord Abbett,  are permitted to
     purchase and sell  securities for their personal  investment  accounts.  In
     engaging in personal  securities  transactions,  however,  such persons are
     subject to requirements  and  restrictions  contained in the Fund's Code of
     Ethics which complies,  in substance,  with each of the  recommendations of
     the Investment Company  Institute's  Advisory Group on Personal  Investing.
     Among  other  things,  the Code  requires  that Lord  Abbett  partners  and
     employees  obtain  advance  approval  before buying or selling  securities,
     submit confirmations and quarterly transaction reports, and obtain approval
     before  becoming a director of any company;  and it prohibits  such persons
     from   investing   in  a  security   7  days   before  or  after  any  Lord
     Abbett-sponsored  fund or Lord Abbett-managed  account considers a trade or
     trades  in such  security,  prohibiting  profiting  on  trades  of the same
     security within 60 days and trading on material and non-public information.
     The Code imposes  certain  similar  requirements  and  restrictions  on the
     independent  directors  and trustees of each Lord  Abbett-sponsored  mutual
     fund to the extent  contemplated  by the  recommendations  of such Advisory
     Group.





                                       8

<PAGE>



     PART C OTHER INFORMATION

     Item 24. FINANCIAL STATEMENTS AND EXHIBITS

          (a) Financial Statements

          (b) Exhibits -
          
               99.B1 Articles Supplementary to Articles of Incorporation*
               99.B2 By-Laws**
               99.B4 Form of Specimen Share Certificate*
               99.B5 Management  Agreement between Registrant and Lord, Abbett &
                     Co.**
               99.B6 Form of Distribution Agreement*
               99.B7(a) Retirement  Plan for  Non-interested  Person Directors
                        and Trustees of Lord Abbett Funds.***

               99.B7(b) Lord Abbett Prototype Retirements Plans****
                          (1) 401(k)
                          (2) IRA
                          (3) 403(b)
                          (4) Profit-Sharing, and 
                          (5) Money Purchases
               99.B8 Global Custody Agreement**
               99.B9 Agreement between Registrant and  Transfer Agent** 
               99.B10 Opinion and Consent of Counsel*

If an exhibit is not mentioned it is not applicable.

     *    To be filed.
     **   Incorporated  by reference to  Post-Effective  Amendment  No. 4 to the
          Registrant's   Registration   Statement   (on  Form  N-1A)  (File  No.
          811-6650).
     ***  Incorporated  by reference to  Post-Effective  Amendment  No. 7 to the
          Registration Statement (on Form N1-A) of Lord Abbett Equity Fund (File
          No. 811-6033).
     **** Incorporated  by reference to  Post-Effective  Amendment  No. 6 to the
          Registration  Statement (on Form N1-A) of Lord Abbett Securities Trust
          (File No. 811-7538).

     Item 25. PERSON CONTROLLED BY OR UNDER COMMON CONTROL WITH REGISTRANT

               None.

     Item 26.  NUMBER  OF RECORD  HOLDERS  OF  SECURITIES

              Lord  Abbett  Mid-Cap Research Fund - None.

     Item 27. INDEMNIFICATION

          Registrant is incorporated under the laws of the State of Maryland and
          is subject  to  Section  2-418 of the  Corporations  and  Associations
          Article of the Annotated Code of the State of Maryland controlling the
          indemnification  of directors and officers.  Since  Registrant has its
          executive  offices  in the State of New York,  and is  qualified  as a
          foreign  corporation doing business in such State, the persons covered
          by the  foregoing  statute  may also be entitled to and subject to the
          limitations of the  indemnification  provisions of Section  721-727 of
          the New York Business Corporation Law.

          The general effect of these statutes is to protect officers, directors
          and  employees of  Registrant  against  legal  liability  and expenses
          incurred  by  reason  of  their  positions  with the  Registrant.  The
          statutes provide for indemnification for liability for proceedings not
          brought on behalf of the corporation and for those brought on

                                       1

<PAGE>



         behalf of the  corporation,  and in each case  place  conditions  under
         which  indemnification will be permitted,  including  requirements that
         the officer,  director or employee  acted in good faith.  Under certain
         conditions,  payment of expenses in advance of final disposition may be
         permitted. The By-Laws of Registrant, without limiting the authority of
         Registrant to indemnify any of its officers, employees or agents to the
         extent consistent with applicable law, makes the indemnification of its
         directors  mandatory  subject only to the  conditions  and  limitations
         imposed by the above-mentioned Section 2-418 of Maryland Law and by the
         provisions  of Section 17(h) of the  Investment  Company Act of 1940 as
         interpreted  and required to be implemented by SEC Release No. IC-11330
         of September 4, 1980.

         In referring in its By-Laws to, and making indemnification of directors
         subject to the conditions and limitations of, both Section 2-418 of the
         Maryland Law and Section 17(h) of the  Investment  Company Act of 1940,
         Registrant intends that conditions and limitations on the extent of the
         indemnification  of  directors  imposed  by the  provisions  of  either
         Section 2-418 or Section  17(h) shall apply and that any  inconsistency
         between the two will be resolved by  applying  the  provisions  of said
         Section 17(h) if the  condition or limitation  imposed by Section 17(h)
         is the more  stringent.  In referring in its By-Laws to SEC Release No.
         IC-11330 as the source for interpretation and implemen-

         tation of said Section 17(h),  Registrant  understands that it would be
         required  under  its  By-Laws  to use  reasonable  and  fair  means  in
         determining  whether  indemnification  of a director should be made and
         undertakes to use either (1) a final  decision on the merits by a court
         or other body before whom the proceeding was brought that the person to
         be  indemnified  ("indemnitee")  was not liable to Registrant or to its
         security holders by reason of willful mal-

         feasance,  bad faith,  gross negligence,  or reckless  disregard of the
         duties involved in the conduct of his office  ("disabling  conduct") or
         (2) in the  absence of such a  decision,  a  reasonable  determination,
         based upon a review of the facts, that the indemnitee was not liable by
         reason of such  disabling  conduct,  by (a) the vote of a majority of a
         quorum of directors who are neither "interested persons" (as defined in
         the 1940 Act) of Registrant  nor parties to the  proceeding,  or (b) an
         independent legal counsel in a written opinion.  Also,  Registrant will
         make  advances  of  attorneys'  fees or other  expenses  incurred  by a
         director in his defense  only if (in  addition  to his  undertaking  to
         repay the advance if he is not ultimately  entitled to indemnification)
         (1)  the  indemnitee  provides  a  security  for his  undertaking,  (2)
         Registrant  shall be insured  against  losses  arising by reason of any
         lawful advances,  or (3) a majority of a quorum of the non- interested,
         non-party directors of Registrant, or an independent legal counsel in a
         written  opinion,  shall  determine,  based  on  a  review  of  readily
         available  facts,  that there is reason to believe that the  indemnitee
         ultimately will be found entitled to indemnification.

         Insofar as  indemnification  for liability arising under the Securities
         Act of 1933 may be permitted  to  directors,  officers and  controlling
         persons of the  registrant  pursuant to the  foregoing  provisions,  or
         otherwise,  the  registrant has been advised that in the opinion of the
         Securities  and Exchange  Commission  such  indemnification  is against
         public policy as expressed in the Act and is, therefore, unenforceable.
         In the event that a claim for indemnification  against such liabilities
         (other than the payment by the  registrant of expense  incurred or paid
         by a director,  officer or controlling  person of the registrant in the
         successful  defense of any action,  suit or  proceeding) is asserted by
         such  director,  officer or controlling  person in connection  with the
         securities being registered, the registrant will, unless in the opinion
         of its counsel the matter has been  settled by  controlling  precedent,
         submit to a court of appropriate jurisdiction the question whether such
         indemnification  by it is against public policy as expressed in the Act
         and will be governed by the final adjudication of such issue.

         Item 28. BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER


         Lord,  Abbett & Co. acts as  investment  advisor for  seventeen,  other
         open-end investment companies (of which it is principal underwriter for
         fifteen),  and as  investment  adviser to  approximately  5,100 private
         accounts.  Other than acting as directors  and/or  officers of open-end
         investment  companies  managed  by Lord,  Abbett  & Co.,  none of Lord,
         Abbett & Co.'s  partners has, in the past two fiscal years,  engaged in
         any other business, profession, vocation or employment of a substantial
         nature for his own  account or in the  capacity of  director,  officer,
         employee, partner or trustee of any entity except as follows:


                                       2

<PAGE>



                      John J. Walsh
                      Trustee
                      The Brooklyn Hospital Center
                      100 Parkside Avenue
                      Brooklyn, N.Y.

         Item 29. PRINCIPAL UNDERWRITER

                  (a) Affiliated Fund, Inc.
                      Lord Abbett U. S. Government Securities Fund, Inc.
                      Lord Abbett Bond-Debenture Fund, Inc.
                      Lord Abbett Value Appreciation Fund, Inc.
                      Lord Abbett Developing Growth Fund, Inc.
                      Lord Abbett Tax-Free Income Fund, Inc.
                      Lord Abbett California Tax-Free Income Fund, Inc.
                      Lord Abbett Fundamental Value Fund, Inc.
                      Lord Abbett Global Fund, Inc.
                      Lord Abbett U. S. Government Securities Money Market 
                         Fund, Inc.
                      Lord Abbett Series Fund, Inc.
                      Lord Abbett Equity Fund
                      Lord Abbett Tax-Free Income Trust
                      Lord Abbett Securities Trust
                      Lord Abbett Investment Trust

                    INVESTMENT ADVISOR

                    American  Skandia  Trust  (Lord  Abbett  Growth  and  Income
                         Portfolio) 
                    America's Utility Fund, Inc.


                      (b)    The partners of Lord, Abbett & Co. are:

                     Name and Principal          Positions and Offices
                     Business Address             with Registrant
                     ------------------           --------------------
                      Ronald P. Lynch             President, Chairman
                      Thomas S. Henderson          Vice President
                      Kenneth B. Cutler            Vice President & Secretary
                      Stephen I. Allen             Vice President
                      Daniel E. Carper             Vice President
                      Robert S. Dow                Vice President
                      E. Wayne Nordberg            Vice President
                      John J. Walsh                Vice President

                    (1)  Each of the above has a principal  business address 767
                         Fifth Avenue, New York, NY 10153

                    (c)  Not applicable

     Item 30. LOCATION OF ACCOUNTS AND RECORDS
                                                                      
          Registrant  maintains  the  records,  required by Rules 31a - 1(a) and
          (b), and 31a - 2(a) at its main office.

          Lord,  Abbett & Co. maintains the records required by Rules 31a - 1(f)
          and 31a - 2(e) at its main office.


                                       3

<PAGE>


         Certain records such as canceled stock  certificates and correspondence
         may be  physically  maintained  at the main office of the  Registrant's
         Transfer Agent,  Custodian,  or Shareholder  Servicing Agent within the
         requirements of Rule 31a-3.

     Item 31. MANAGEMENT SERVICES

                None

     Item 32. UNDERTAKINGS

          The Registrant  undertakes to file a  post-effective  amendment to the
          registration  statement,  using  financial  statements with respect to
          Series 2 which need not be certified,  within four to six months after
          the effective date of the registration statement.

                                       4



<PAGE>

                                   SIGNATURES

Pursuant to the  requirements  of the  Securities Act of 1933 and the Investment
Company Act of 1940 the Registrant has duly caused this  Registration  Statement
and/or any  amendment  thereto  to be signed on its  behalf by the  undersigned,
thereunto duly authorized,  in the City of New York and State of New York on the
12th day of May 1995

                              LORD ABBETT RESEARCH FUND, INC.


                              By   /S/ RONALD P. LYNCH
                                   -------------------------------
                                    Ronald P. Lynch, Chairman

Pursuant to the  requirements of the Securities Act of 1933,  this  Registration
Statement has been signed below by the following  persons in the  capacities and
on the dates indicated.



NAME                              TITLE                          DATE
- -----                            ------                          -----

                               Chairman,
/s/ Ronald P. Lynch            President & Director             May 12, 1995
- ---------------------------



/s/ John J. Gargana, Jr.       Vice President &                 May 12, 1995
- ---------------------------    Chief Financial Officer



/s/ Hansel B. Millican, Jr.    Director                         May 12, 1995
- ---------------------------



/s/ Thomas J. Neff             Director                         May 12, 1995
- ---------------------------






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