LORD ABBETT RESEARCH FUND INC
497, 1998-04-16
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This Prospectus sets forth concisely the information  about Lord Abbett Research
Fund, Inc. (the "Fund") that you should know before investing.  Please read this
Prospectus before investing and retain it for future reference.

The Fund  consists  of three  series.  Only  shares  of two of those  series  --
Large-Cap Series and Small-Cap Series ("we" or the "Series") are offered by this
Prospectus.  However,  the  Small-Cap  Series will be closed to new investors on
April 9, 1998.  Each Series  offers three  classes  designated  Class A, B and C
shares which provide investors with different purchase options.  See "Purchases"
for a description of these choices.

The Large-Cap  Series'  investment  objective is growth of capital and growth of
income  consistent  with  reasonable  risk.  The  Small-Cap  Series'  investment
objective is to seek long-term capital  appreciation.  There can be no assurance
that each Series will achieve its objective.

The Statement of Additional  Information dated April 1, 1998 has been filed with
the Securities and Exchange  Commission  and is  incorporated  by reference into
this Prospectus. You may obtain it, without charge, by writing to the Fund or by
calling  800-874-3733.  Ask for "Part B of the  Prospectus  -- the  Statement of
Additional Information".

Shaded terms are defined in the Glossary of Terms.

Mutual Fund shares are not deposits or obligations of, or guaranteed or endorsed
by,  any  bank.  Shares  are  not  insured  by  the  Federal  Deposit  Insurance
Corporation,  the Federal Reserve Board,  or any other agency.  An investment in
the Fund involves risks, including the possible loss of principal.

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.

LORD ABBETT
RESEARCH FUND

The Small-Cap Series will be closed to new investors on April 9, 1998. Purchases
may  continue  by  shareholders  with  existing  accounts  and  participants  in
Retirement   Plans  which  currently  offer  the  Series  as  an  option.   Call
800-874-3733 for more information.

PROSPECTUS
April 1, 1998

TABLE OF CONTENTS                       PAGE

Large-Cap Series
        How We Invest                    2
        Risk Factors                     2
        Portfolio Management             2
        Investor Expenses                2
        Financial Highlights             3
Small-Cap Series
        How We Invest                    4
        Risk Factors                     4
        Portfolio Management             4
        Investor Expenses                4
        Financial Highlights             5
Purchases                                6
Opening Your Account                     8
Shareholder Services                     8
Redemptions                              9
Dividends and Capital Gains              9
Our Management                          10
Fund Performance                        10
Investment Policies, Risks and Limits   11
Sales Compensation                      16
Glossary of Terms                       17

Lord, Abbett & Co.

Investment Management
A Tradition of Performance Through Disciplined Investing

The General Motors Building
767 Fifth Avenue o New York o New York o10153
(800) 426-1130
<PAGE>
LARGE-CAP SERIES
HOW WE INVEST
Normally we invest in the common stocks (including  securities  convertible into
common    stocks    such    as    investment-grade    convertible    bonds    or
convertible-preferred  stocks) of companies whose outstanding  equity securities
have  an  aggregate  market  value  of  at  least  $1.5  billion.  Under  normal
circumstances,  at least 65% of the Large-Cap  Series' total assets will consist
of investments made in large-cap companies,  determined at the time of purchase.
See "Investment Policies, Risks and Limits".

RISK FACTORS 

The  value of your  investment  will  fluctuate  in  response  to  stock  market
movements.  The Fund employs other  investment  practices such as investments in
foreign   securities  and  other   securities,   that  could  adversely   affect
performance.  Before you invest,  please read  "Investment  Policies,  Risks and
Limits".

PORTFOLIO MANAGEMENT

Robert G. Morris,  Partner of Lord,  Abbett & Co. ("Lord  Abbett") and Executive
Vice  President of the Fund and  portfolio  manager of the  Large-Cap  Series is
primarily  responsible for the day-to-day management of the Fund. Mr. Morris has
been with Lord Abbett since 1991 and has over 26 years of investment experience.
Mr. Morris delegates management duties to a committee of research professionals.


INVESTOR EXPENSES

The expenses  shown below are based on historical  expenses  adjusted to reflect
current fees. Future expenses may be different than those shown.

LARGE-CAP SERIES                        Class A   Class B   Class C

Shareholder Transaction Expenses
Maximum Sales Charge on Purchases
(as a % of offering price)              5.75%     None      None

Deferred Sales Charge (See "Purchases") None      5.00%     1.00%
Annual Fund Operating Expenses (as a % of average net assets)
Management Fees                         0.75%     0.75%     0.75%
  (See "Our Management")
12b-1 Fees(1)                           0.23%     1.00%     1.00%
Other Expenses                          0.54%     0.54%     0.54%
  (See "Our Management")
Total Operating Expenses                1.52%     2.29%     2.29%


Example

Assume an average  annual  return of 5% and no change in the level of  expenses.
For a $1,000  investment with all dividends and  distributions  reinvested,  you
would have paid the following  total  expenses  assuming you sold your shares at
the end of each time period indicated.

 Share Class             1 year    3 years   5 years   10 years

Class A shares           $72       $103      $136      $229

Class B shares(2)        $73       $101      $142      $243

Class C shares           $33       $ 71      $122      $263

You would pay the following  expenses on the same investment,  assuming you kept
your shares:

Class A shares           $72       $103      $136      $229

Class B shares(2)        $23       $ 71      $122      $243

Class C shares           $23       $ 71      $122      $263

This example is for  comparison  and is not a  representation  of the  Large-Cap
Series' actual expenses and returns, either past or present.

(1)Because of the 12b-1 fee, long-term shareholders may indirectly pay more than
the equivalent of the maximum permitted front-end sales charge.

(2)Class  B shares  will  automatically  convert to Class A shares on the eighth
anniversary of your original purchase of Class B shares.
<PAGE>

FINANCIAL  HIGHLIGHTS The following  table has been audited by Deloitte & Touche
LLP,  independent  auditors,  in  connection  with  their  annual  audit  of the
Large-Cap Series' Financial Statements, whose report may be obtained on request.
Call 800-821-5129 and ask for the Large-Cap Series' 1997 annual report.

 <TABLE>
<CAPTION>

 LARGE-CAP SERIES

  Per Class A Share Operating                          Year Ended November 30,                           June 3, 1992(d)
  Performance:                                         1997      1996      1995      1994      1993      to  November 30, 1992
<S>                                                    <C>       <C>       <C>       <C>       <C>       <C>
  Net asset value, beginning of year                   $17.86    $15.54    $12.79    $12.33    $10.61    $10.00
  Income from investment operations
    Net investment income                              .08(e)    .270      .42       .34       .29          .12
    Net realized and unrealized
    gain on investments                                3.21      3.505     3.44      .65       1.57         .49
Total from investment operations                       3.29      3.775     3.86      .99       1.86         .61
Distributions
    Dividends from net investment income               (.12)     (.57)     (.29)     (.20)     (.14)         --
    Distributions from net realized gain               (.95)     (.885)    (.82)     (.33)      --           --
Net asset value, end of year                           $20.08    $17.86    $15.54    $12.79    $12.33    $10.61
Total Return(a)                                        19.87%    26.25%    32.82%    8.21%     17.72%     6.10%(c)
    Ratios to Average Net Assets:
    Expenses, including waiver and reimbursements      1.52%     0.36%     0.00%     0.00%     0.00%      0.00%(c)
    Expenses, excluding waiver and reimbursements      1.52%     0.96%     1.02%     1.15%     1.20%      0.79%(c)
    Net Investment Income                              0.42%     2.24%     3.27%     2.65%     2.44%      1.39%(c)
</TABLE>

<TABLE>
<CAPTION>

LARGE-CAP SERIES                                  Class B Shares                               Class C Shares
Per Class Share Operating                  Year Ended            August 1, 1996(b) to        April 1, 1997(b) to
Performance                             November 30, 1997        November 30, 1996           November 30, 1997
<S>                                        <C>                   <C>                           <C>   
Net asset value, beginning of period         $17.83              $15.24                        $16.90
Income from investment operations
    Net investment income (loss)            (.06)(e)                .12                        (.07)(e)
    Net realized and unrealized
    gain on securities                       3.20                2.66                          3.18
    Total from investment operations         3.14                2.78                          3.11
Distributions
    Dividends from net investment income     (.02)               (.19)                         --
    Distribution From Net Realized Gain      (.95)               --                            --
Net asset value, end of period               $20.00              $17.83                        $20.01
Total Return(a)                              18.92%              18.39%(c)                     18.40%(c)
Ratios to Average Net Assets:
    Expenses                                 2.28%               0.59%(c)                      1.54%(c)
    Net investment income                    (0.34)%             0.22%(c)                     (0.37)%(c)
</TABLE>

<TABLE>
<CAPTION>

  LARGE-CAP SERIES                                Year Ended November 30,                 June 3, 1992(d) to
  Supplemental Data For All Classes:    1997      1996      1995      1994      1993      November 30, 1992
<S>                                     <C>       <C>       <C>       <C>       <C>       <C>

Net Assets, end of year (000)           $69,796   $23,592   $7,549    $5,558    $4,086    $2,372
Portfolio turnover rate                 30.81%    62.25%    37.17%    43.85%    74.16%    20.70%
  Average commissions per share
  paid on equity transactions           $0.063    $0.056    --        --        --        --
<FN>

(a)Total  return does not consider the effects of front-end  sales or contingent
deferred sales charges.
(b)Commencement of offering Class shares.
(c)Not annualized.
(d)Commencement of Operations.
(e)Calculated using average shares outstanding during the period.
          See Notes to Financial Statements.
</FN>
</TABLE>

<PAGE>
small-cap series

HOW WE INVEST

Normally we invest primarily in a carefully selected portfolio of common stocks.
Dividend and investment  income is of incidental  importance,  and the Small-Cap
Series may invest in securities  which do not produce any income.  The Small-Cap
Series typically will hold a large,  diversified number of securities identified
through  a  quantitative,   value-driven  investment  strategy.  Shares  of  the
Small-Cap Series should be purchased with a long-term view in mind. Under normal
circumstances,  at least  65% of the  Small-Cap  Series'  total  assets  will be
invested in common stocks issued by smaller,  less  well-known  companies  (with
market  capitalizations  of less  than $1  billion)  selected  on the  basis  of
fundamental investment analysis.
See "Investment Policies, Risks and Limits".

RISK FACTORS

Although  the  Small-Cap  Series  may  invest,  from time to time,  in stocks of
large-sized and small-sized  companies guided by the policies  mentioned herein,
the  small  capitalized  companies  in  which it  primarily  invests  may  offer
significant  appreciation potential.  However,  smaller companies may carry more
risk than larger companies.  Generally,  small companies rely on limited product
lines and markets, financial resources, or other factors, and this may make them
more susceptible to setbacks or economic downturns.  Small capitalized companies
may be more volatile in price,  normally have fewer shares outstanding and trade
less  frequently  than large  companies.  Therefore,  the  securities of smaller
companies may be subject to wider price  fluctuations.  In many  instances,  the
securities  of smaller  companies  are traded  over the  counter  and may not be
traded in the  volume  typical  of a national  securities  exchange.  Before you
invest, please read "Investment Policies, Risks and Limits".

PORTFOLIO MANAGEMENT

Robert P. Fetch, Executive Vice President and portfolio manager of the Small-Cap
Series is primarily  responsible for the day-to-day  management of the Small-Cap
Series.  Mr. Fetch has been with Lord Abbett since 1995 and has over 20 years of
investment experience.  Mr. Fetch is assisted by a team consisting of Gregory M.
Macosko and Michael T. Smith.  Prior to joining  Lord  Abbett,  Mr.  Fetch was a
Managing Director of Prudential Investment Advisors.

INVESTOR EXPENSES

The expenses  shown below are based on historical  expenses  adjusted to reflect
current fees. Future expenses may be different than those shown.

 SMALL-CAP SERIES                       Class A   Class B   Class C

Shareholder Transaction Expenses
Maximum Sales Charge on Purchases
(as a % of offering price)              5.75%     None      None
Deferred Sales Charge (See "Purchases") None      5.00%     1.00%
 Annual Fund Operating Expenses (as a % of average net assets)
Management Fees                         0.75%     0.75%     0.75%
  (See "Our Management")
12b-1 Fees(1)                           0.31%     1.00%     1.00%
Other Expenses                          0.11%     0.11%     0.11%
  (See "Our Management")
Total Operating Expenses                1.17%     1.86%     1.86%

Example

Assume an average  annual  return of 5% and no change in the level of  expenses.
For a $1,000  investment with all dividends and  distributions  reinvested,  you
would have paid the following  total  expenses  assuming you sold your shares at
the end of each time period indicated.

Share Class         1 year    3 years   5 years   10 years

Class A shares      $69       $93       $118      $192
Class B shares(2)   $69       $88       $121      $200
Class C shares      $29       $58       $101      $218

You would pay the following  expenses on the same investment,  assuming you kept
your shares:

Class A shares      $69       $93       $118      $192
Class B shares(2)   $19       $58       $101      $200
Class C shares      $19       $58       $101      $218

This example is for comparison and is not a representation  of the Fund's actual
expenses and returns, either past or present.

(1)Because of the 12b-1 fee, long-term shareholders may indirectly pay more than
the equivalent of the maximum permitted front-end sales charge.

(2)Class  B shares  will  automatically  convert to Class A shares on the eighth
anniversary of your original purchase of Class B shares.
<PAGE>

FINANCIAL  HIGHLIGHTS The following  table has been audited by Deloitte & Touche
LLP,  independent  auditors,  in  connection  with  their  annual  audit  of the
Small-Cap Series' Financial Statements, whose report may be obtained on request.
Call 800-821-5129 and ask for the Small-Cap Series' 1997 annual report.
<TABLE>
<CAPTION>
SMALL-CAP SERIES                                  Class A Shares                      Class B Shares               Class C Shares
                                             Year Ended    December 13, 1995(b) Year Ended  November 15, 1996(b) April 1, 1997(b) to
Per Share Operating                          November 30,  to November 30,      November 30,   November 30,        November 30,
Performance:                                 1997           1996                1997           1996                1997
<S>                                          <C>            <C>                 <C>            <C>                 <C>
Net asset value, beginning of year           $12.01         $10.00              $12.00         $11.67              $12.81
Income from investment operations
  Net investment income (loss)                  .02(e)      .127                (.09)(e)        .001               (.05)(e)
  Net realized and unrealized
  gain on investments                          4.53         2.658               4.53            .329               3.68
  Total from investment operations             4.55         2.785               4.44            .33                3.63
Distributions
  Dividends from net investment income          ---         (.075)              ---             ---                ---
  Distributions from net realized gain          ----        (.700)              ---             ---                ---
Net asset value, end of year                 $16.56         $12.01              $16.44         $12.00              $16.44
Total Return(a)                               37.89%        28.24%(c)           37.00%           2.84%(c)          28.34%(c)
  Ratios to Average Net Assets:
  Expenses, including waiver and reimbursements1.17%          .01%(c)           1.86%            0.04%(c)          1.25%(c)
  Expenses, excluding waiver and reimbursements1.17%        1.00%(c)            1.86%            0.07%(c)          1.25%(c)
  Net Investment Income                         .10%        1.02%(c)            (.56)%            .01%(c)          (.30)%(c)

</TABLE>

<TABLE>
<CAPTION>
SMALL-CAP SERIES                        Year Ended          December 13, 1995(d) to
Supplemental Data For All Classes:    November 30,1997        November 30, 1996
<S>                                     <C>                 <C>

Net Assets, end of year (000)           $435,776            $8,772
Portfolio turnover rate                 45.24%              110.09%
  Average commissions per share
  paid on equity transactions           $0.061              $0.052
<FN>
(a)Total  return does not consider the effects of front-end  sales or contingent
deferred sales charges.
(b)Commencement of offering Class shares.
(c)Not annualized.
(d)Commencement of Operations
(e)Calculated using average shares outstanding during the period.
          See Notes to Financial Statements.
</FN>
</TABLE>

<PAGE>

PURCHASES

This Prospectus offers three classes of shares,  Class A, B and C. These classes
of shares  represent  investments  in the same  portfolio of securities  but are
subject to different expenses.  Our shares are continuously offered based on the
per share net asset value  ("NAV") next  computed  after we accept your purchase
order  submitted  in proper  form,  plus a front-end  sales  charge as described
below,  in the case of the Class A shares and without a front-end  sales charge,
in the case of the Class B and C shares as  described  below.  Investors  should
read this section  carefully to determine  which class of shares  represents the
best investment option for their particular situation.

Class A

     o    Normally offered with a front-end sales charge.

     o    Lower annual expenses than Class B and Class C shares.

Class B

     o    No front-end sales charge.

     o    Higher annual expenses than Class A shares.

     o    A contingent  deferred sales charge is applied to shares sold prior to
          the sixth anniversary of purchase.

     o    Automatically convert to Class A shares after eight years.

Class C

     o    No front-end sales charge.

     o    Higher annual expenses than Class A shares.

     o    A contingent  deferred sales charge is applied to shares sold prior to
          the first anniversary of purchase.

It may not be suitable  for you to place a purchase  order for Class B shares of
$500,000 or more or a purchase  order for Class C shares of  $1,000,000 or more.
You should discuss pricing options with your investment  professional.  For more
information, see "Alternative Sales Arrangements" in the Statement of Additional
Information.

Class A Shares. Front-end sales charges are as follows:

                                                   To Compute
                       As a % of     As a % of    Offering Price
                        Offering      Your         Divide
Your Investment          Price       Investment     NAV by
Less than $50,000        5.75%       6.10%        .9425
$50,000 to $99,999       4.75%       4.99%        .9525
$100,000 to $249,999     3.75%       3.90%        .9625
$250,000 to $499,999     2.75%       2.83%        .9725
$500,000 to $999,999     2.00%       2.04%        .9800
$1,000,000 over         No Sales Charge          1.0000

Reducing Your Class A Front-End  Sales  Charges.  There are several ways you can
qualify for a lower sales  charge when  purchasing  Class A shares if you inform
the Fund that you are eligible at the time of purchase.

     o    Rights of  Accumulation--  a Purchaser  can add the share value of any
          Eligible  Fund  already  owned to the amount of the next  purchase  of
          Class A shares for purposes of calculating the sales charge.

     o    Statement of  Intention-- a Purchaser  can purchase  Class A shares of
          any  Eligible  Fund over a 13-month  period and receive the same sales
          charge as if all shares had been purchased at once.  Shares  purchased
          through reinvestment of distributions are not included.

For more  information on eligibility for these  privileges,  read the applicable
sections in the attached application.

Class A Share Purchases Without a Front-End Sales Charge.  Class A shares may be
purchased without a front-end sales charge under the following circumstances.

1  Purchases of $1 million or more. * 

2 Purchases by Retirement Plans with at least 100 eligible employees.*

3 Purchases under a Special Retirement Wrap Program.*

4 Purchases made with dividends and  distributions  on Class A shares of another
Eligible Fund.

5  Purchases   representing  repayment  under  the  loan  feature  of  the  Lord
Abbett-sponsored prototype 403(b) plan for Class A shares.

6 Employees of any consenting  securities  dealer having a sales  agreement with
Lord Abbett Distributor.

7  Purchases under a Mutual Fund Wrap-Fee Program.
<PAGE>

8 Lord Abbett Consultants/Advisers.

9 Employees of our shareholder servicing agent.

10 Employees of any national  securities trade organization to which Lord Abbett
belongs.

11  Employees  of Lord Abbett and our  Directors/Trustees  (active or  retired),
their spouses, including surviving spouses, and other family members.

12 Trustees or  custodians  of any pension or profit  sharing  plan,  or payroll
deduction IRA for the persons mentioned in 6, 9, 10 and 11 above.

     * May be subject to a CDSC.

Contingent  Deferred Sales Charges ("CDSC").  The CDSC,  regardless of class, is
not charged on shares  acquired  through  reinvestment  of  dividends or capital
gains  distributions and is charged on the original purchase cost or the current
market value of the shares being sold, whichever is lower.

Class A Share  CDSC.  If you buy Class A shares  under one of the  starred (*)
categories  listed above  subject to a dealer's  concession  of up to 1% and you
redeem any of the Class A shares  within 24 months  after the month in which you
initially purchased such shares, the Fund normally will collect a CDSC of 1%.

The  Class  A  share  CDSC   generally   will  be  waived  under  the  following
circumstances.

     o    Benefit payments such as Retirement Plan loans,  hardship withdrawals,
          death, disability,  retirement,  separation from service or any excess
          distribution under Retirement Plans (documentation may be required).

     o    Redemptions continuing as investments in another fund participating in
          a Special Retirement Wrap Program.

Class B Share CDSC. The CDSC for Class B shares  normally  applies if you redeem
your shares before the sixth  anniversary  of their initial  purchase.  The CDSC
varies  depending  on how long you own your shares  according  to the  following
schedule.

                         Contingent Deferred
Anniversary(1)           Sales Charge on
of the Day on            Redemptions
Which the Purchase       (As % of Amount
Order Was Accepted       Subject to Charge)
On        Before
          1st            5.0%
1st       2nd            4.0%
2nd       3rd            3.0%
3rd       4th            3.0%
4th       5th            2.0%
5th       6th            1.0%
on or after the          None
6th anniversary(2)

(1)Anniversary is the 365th day subsequent to a purchase or a prior anniversary.

(2)Class  B shares  will  automatically  convert to Class A shares on the eighth
anniversary of the purchase of Class B shares.


The  Class  B  share  CDSC   generally   will  be  waived  under  the  following
circumstances.

o Benefit payments such as Retirement Plan loans, hardship  withdrawals,  death,
disability, retirement, separation from service or any excess distribution under
Retirement Plans.

     o    Eligible  Mandatory  Distributions  under 403(b) plans and  individual
          retirement accounts.

     o    Death of the shareholder (natural person).

     o    On  redemptions  of shares in connection  with Div-Move and Systematic
          Withdrawal Plans (up to 12% per year).

See "Systematic  Withdrawal  Plan" for more information on CDSCs with respect to
Class B shares.

Class C Share  CDSC.  The 1% CDSC for  Class C shares  normally  applies  if you
redeem your shares before the first anniversary of your original purchase.

Application  of  CDSC to a  Redemption.  To  determine  if a CDSC  applies  to a
redemption, the Fund redeems shares in the following order.

          1    Shares acquired by reinvestment of dividends and capital gains.

          2    Shares  held for six years or more  (Class B) or one year or more
               (Class C).

          3    Shares held the  longest  before the sixth  anniversary  of their
               purchase  (Class B) or  before  the  first  anniversary  of their
               purchase (Class C).
<PAGE>

OPENING YOUR ACCOUNT

Minimum Initial Investment Per Series

o Regular account                  $1000
o Individual Retirement Accounts, 403(b)
  and employer-sponsored retirement plans
  under the Internal Revenue Code   $250
o Invest-A-Matic and Div-Move  $250 initial
                     $50 subsequent minimum

For  Retirement  Plans  and  Mutual  Fund  Wrap  Programs,  there is no  minimum
investment required, regardless of share class.

You may purchase  shares  through any  independent  securities  dealer who has a
sales  agreement  with Lord Abbett  Distributor or you can fill out the attached
application and send it to the Fund at the address stated below. You should read
this Prospectus  carefully  before placing your order to assure your order is in
proper form.

Lord Abbett Research Fund, Inc.
P.O. Box 419100
Kansas City, MO 64141

Proper Form. To be in proper form an order  submitted  directly to the Fund must
contain  (1) a  completed  Application  Form or  information  and  documentation
required  supplementally  by the Fund,  and (2) payment must be credited in U.S.
dollars to our custodian bank's account.  For more information  regarding proper
form of a purchase order, call the Fund at 800-821-5129.

IMPORTANT INFORMATION.  If you fail to provide a correct taxpayer identification
number or to make certain required  certifications,  you may be subject to a $50
penalty  under the  Internal  Revenue  Code and we may be required to withhold a
portion (31%) of any redemption  proceeds and of any dividend or distribution on
your account.

By Exchange.  Telephone the Fund at  1-800-821-5129  to request an exchange from
any eligible Lord Abbett-sponsored fund.

We reserve the right to withdraw  all or any part of the  offering  made by this
Prospectus or to reject any purchase  order. We also reserve the right to waive,
increase or establish minimum investment  requirements.  All purchase orders are
subject to our  acceptance  and are not binding  until  confirmed or accepted in
writing.

SHAREHOLDER SERVICES

Telephone  Exchanges.   You  or  your  investment   professional,   with  proper
identification,  can instruct  the Fund by  telephone to exchange  shares of any
class for the same class of any Eligible Fund.  Instructions must be received by
the Fund in Kansas City by calling  1-800-821-5129 prior to the close of the New
York Stock Exchange ("NYSE") to obtain an Eligible Fund's NAV per class share on
that day. Exchanges will be treated as a sale for federal tax purposes.

For your protection, telephone requests for exchanges are recorded. We will take
measures to verify the  identity  of the  caller,  such as asking for your name,
account  number,  social  security or taxpayer  identification  number and other
relevant  information.  The Fund will not be liable for  following  instructions
communicated by telephone that it reasonably believes to be genuine.

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 limit  or  terminate  this  privilege  for any  shareholder  making  frequent
exchanges and may revoke the privilege for all shareholders  upon 60 days' prior
written notice. You have this privilege unless you refuse it in writing.

You  should  read the  prospectus  of the other  Lord  Abbett-sponsored  fund(s)
selected before making an exchange.

Invest-A-Matic.  You can make fixed,  periodic investments ($250 initial and $50
subsequent  minimum) into the Fund by means of automatic  money  transfers  from
your bank checking account. See the attached Application Form for instructions.

Div-Move.  You can invest the dividends  paid on your account ($50 minimum) into
another account, within the same class, in any Eligible Fund.

The account must be either your account, a joint spousal account, or a custodial
account for your minor child.

Systematic  Withdrawal Plan ("SWP"). You can make periodic cash withdrawals from
your account which are  automatically  paid to you in fixed or variable amounts.
To  participate,  the value of your shares must be at least $10,000,  except for
retirement plans for which there is no minimum.

With respect to Class B shares,  the CDSC will be waived on redemptions of up to
12% of the  current  net  asset  value of your  account  at the time of your SWP
request. For Class B share redemptions over 12% per year, the CDSC will apply to
the entire redemption.  Please contact the Fund for assistance in minimizing the
CDSC in this situation.
<PAGE>

Redemption  proceeds  due to a SWP for  Class B (up to 12% per year) and Class C
shares, will be redeemed in the order described under "Redemptions".

Lord Abbett's  Retirement  Plans. The Lord Abbett Family of Funds offers a range
of qualified retirement plans,  including IRAs, SIMPLE IRAs, Simplified Employee
Pension Plans,  403(b) and pension and  profit-sharing  plans,  including 401(k)
plans. To find out more about these plans, call the Fund at 1-800-842-0828.

Account Changes. For any changes you need to make to your account,  consult your
financial representative or call the Fund at 1-800-821-5129.

Householding.  Generally,  shareholders with the same last name and address will
receive a single  copy of an annual or  semi-annual  report,  unless  additional
reports are specifically requested in writing to the Fund.

Reinvestment  Privilege.  If you sell shares of the Fund,  you have the one time
right to reinvest  some or all of the proceeds in the same class of any Eligible
Fund  within 60 days  without a sales  charge.  If you paid a CDSC when you sold
your  shares,  you will be credited  with the amount of the CDSC.  All  accounts
involved must have the same registration.

Pricing  Shares.  The net asset value ("NAV") per share for each class of shares
is calculated  each business day at the close of regular trading on the New York
Stock Exchange ("NYSE") by dividing a class's net assets by the number of shares
outstanding.  The Fund is open on  those  business  days  when the NYSE is open.
Purchases and  redemptions  are executed at the next NAV to be calculated  after
your request is accepted.

REDEMPTIONS

By Broker. Call your broker or investment  professional for directions on how to
redeem your shares.

By  Telephone.  To obtain the proceeds of an expedited  redemption of $50,000 or
less, you or your  representative can call the Fund at 1-800-821-5129.  The Fund
will employ the procedures  described in telephone exchanges to confirm that the
instructions received are genuine.

The Fund will not be liable for following instructions communicated by telephone
that it reasonably believes to be genuine.

By Mail. Submit a written  redemption  request indicating your Fund's name, your
share class, your account number, the name(s) in which the account is registered
and the dollar value or number of shares you wish to sell.

Include all  necessary  signatures.  If the signer has any Legal  Capacity,  the
signature  and capacity must be  guaranteed  by an Eligible  Guarantor.  Certain
other legal documentation may be required. For more information regarding proper
documentation call 1-800-821-5129.

We will verify that the shares being  redeemed  were  purchased at least 15 days
earlier.  Your  account  balance  must be  sufficient  to cover the amount being
redeemed or your redemption order will not be processed.

Normally  a check  will be  mailed to the  name(s)  and  addresses  in which the
account is registered,  or otherwise  according to your  instruction  within one
business day after  receipt of your  redemption  request.  The Fund reserves the
right to make payment within three business days.

To determine if a CDSC applies to a redemption,  see "Contingent  Deferred Sales
Charges" above.

DIVIDENDS And capital gains

Dividends.  The Fund  distributes most or all of its net earnings in the form of
dividends  which are expected to be paid to shareholders  semi-annually  for the
Large-Cap Series and annually for the Small-Cap Series.

Capital Gains  Distributions.  Any capital gains  distribution is expected to be
made annually and may be taken in cash or reinvested.  Distributions by the Fund
of any net long-term capital gains will be taxable to a shareholder as long-term
capital gains regardless of how long the shareholder has held the shares.  Under
recently enacted  legislation,  the maximum tax rate on long-term  capital gains
for a U.S.  individual,  estate  or trust is  reduced  to 20% for  distributions
derived  from the sale of assets  held by the Fund for more than 18 months.  (If
the  taxpayer  is in the 15% tax  bracket,  the rate is 10%.) For  distributions
derived from the sale of assets held by the Fund  between 12 and 18 months,  the
tax rate remains at 28% (15% if the taxpayer is in the 15% tax bracket).
<PAGE>

Dividends/Capital  Gains  Receipt  or  Reinvestment.  If you  elect  to  receive
dividends  or  capital  gains in cash,  a check will be mailed to you as soon as
possible after the  reinvestment  date. If you arrange for direct deposit,  your
payment will be  electronically  transmitted to your bank account within one day
after the payable date.  Most  investors  reinvest  their  dividends and capital
gains.  If you choose this option,  or if you do not  indicate any choice,  your
dividends and capital gains  distributions  will be automatically  reinvested in
additional shares.

Taxes.  The Fund pays no federal  income tax on the earnings it  distributes  to
shareholders.  Consequently,  dividends  you  receive  from  the  Fund,  whether
reinvested  or  taken in  cash,  are  generally  considered  taxable.  Dividends
declared in 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.

Each  January  the  Fund  will  mail to you,  if  applicable,  a Form  1099  tax
information  statement  detailing your dividends and capital gain distributions.
You should consult your tax adviser concerning applicable state and local taxes.

For  more   information   about  the  tax   consequences   from   dividends  and
distributions, see the Statement of Additional Information.

OUR MANAGEMENT

The Fund is supervised by a Board of Directors,  an  independent  body which has
ultimate  responsibility for the Fund's activities.  The Board has retained Lord
Abbett as investment manager pursuant to a Management Agreement. Lord Abbett has
been an  investment  manager for over 68 years and  currently  manages about $25
billion in a family of mutual  funds and other  advisory  accounts.  Lord Abbett
provides  similar  services to twelve  other  funds  having  various  investment
objectives and also advises other investment clients. For more information about
the services Lord Abbett  provides to the Fund,  see the Statement of Additional
Information.

The Fund pays Lord  Abbett a monthly  fee based on average  daily net assets for
each month.  For the fiscal year ended  November 30, 1997,  the fee paid to Lord
Abbett was at an annual rate of .75 of 1% for each of the  Large-Cap  Series and
the  Small-Cap  Series.  In addition,  the Fund pays all expenses not  expressly
assumed by Lord Abbett.

The Fund.  The Fund is a  diversified  open-end  management  investment  company
established in 1992. Its Class A, B and C shares have equal rights as to voting,
dividends,  assets and liquidation except for differences resulting from certain
class-specific expenses.

FUND PERFORMANCE

About the Large-Cap  Series.  The Large-Cap  Series  produced  strong returns in
1997.  Going  forward,  we are mindful that stock market  valuations  in general
remain near historical  highs. Our industry analysts will continue to diligently
research  securities  to find those that are  expected to increase in value over
time,  while  offering  more  attractive  valuations  than the stock market as a
whole. Over the year, we increased exposure to utilities (such as electric power
companies) and companies that produce consumer  nondurables  (products consumers
use  regularly  or must  replace  frequently,  such as food).  We also  began to
slightly decrease our holdings in technology and consumer  cyclicals  (companies
whose  profits are  affected by cyclical  changes in economic  activity).  These
shifts in the portfolio proved to be helpful to the performance of the Series.

About the Small-Cap Series. The exceptional  performance of the Small-Cap Series
over the past fiscal year can be attributed to select  industrial and technology
stocks in the portfolio.  During the year,  valuations of small-cap  stocks were
favorable, providing many opportunities in the marketplace to purchase companies
with  performance   characteristics   that  drive  toward   consistent,   strong
performance  with low  volatility.  We look for  companies  with long  operating
histories, strong market positions within their industry and financial strength.
These  characteristics  help to reduce business risk and protect  companies from
both economic and competitive  pressures.  We continue to seek issues with solid
fundamental prospects in the small-cap universe to add value to the Series.

See the performance chart on the second to last page of this Prospectus.
<PAGE>

INVESTMENT POLICIES, RISKS AND LIMITS

HOW WE INVEST - LARGE-CAP SERIES

The companies in which  Large-Cap  Series  invests will have good  prospects for
improvement in earnings trends or asset values. The Large-Cap Series will invest
in companies on the basis of the fundamental economic and business factors (such
as government,  fiscal and monetary policies,  employment levels,  demographics,
retail sales and market share) which will affect  future  earnings and which the
Large-Cap Series believes are the primary factors  determining the future market
valuation  of stocks.  There can be no  assurance  that stocks  selected for our
portfolio will  appreciate in value or that their  dividends will increase or be
maintained.

In selecting  securities for investment,  the Large-Cap Series gives more weight
to the  possibilities  of capital  growth  and growth of income  than to current
income.  In seeking to fulfill our objective,  we will invest also in both small
and middle-sized  companies, as measured by the value of their outstanding stock
guided by the policies mentioned herein.

The  Large-Cap  Series'  investment  portfolio  will be  diversified  among many
issuers  representing  many  different  industries.  The portfolio  reflects the
collective  judgment  of the  Research  Department  of  Lord  Abbett  as to what
securities  represent  the greatest  investment  value,  regardless  of industry
sector,  market  capitalization,  or Wall  Street  sponsorship.  At the  time of
purchase,  securities selected for our portfolio may be largely neglected by the
investment  community  or,  if widely  followed,  they may be out of favor or at
least  controversial.  Our  investment  portfolio  typically will encompass less
market risk as measured by its  price-to-normal-earnings and price-to-book-value
ratios.

The Large-Cap Series is permitted to utilize,  within limits  established by the
Board of Directors,  the following  investment  policies in an effort to enhance
the  Large-Cap  Series'  performance.  If no limit is disclosed for a particular
investment  policy,  this means that the Board of Directors  did not establish a
limit for such  investment  policy.  These policies have risks  associated  with
them.  However,  the Large-Cap Series follows certain  practices that may reduce
these risks. To the extent the Large-Cap Series utilizes some of these policies,
its overall performance may be positively or negatively affected.

Selling Covered Call Options:  A covered call option on stock gives the buyer of
the option,  upon payment of a premium to the seller (writer) of the option, the
right to call upon the writer to deliver a specified number of shares of a stock
owned by the writer on or before a fixed date at a predetermined price.

Risk:  Although the Fund  receives  income  based on receipt of the premium,  it
gives up participation in the appreciation of the stock above the  predetermined
price if it is called away by the buyer.

Limit:  Provided they are traded on a national  securities  exchange and used to
increase  Large-Cap  Series'  income and to provide  greater  flexibility in the
disposition of Large-Cap Series' portfolio securities,  the Large-Cap Series may
write covered call options on securities having an aggregate market value not to
exceed 5% of the Series' gross assets.

Foreign  Securities:  Foreign  securities  are  securities  primarily  traded in
countries outside the United States.

Risk:  These securities are not subject to the same degree of regulation and may
be more volatile and less liquid than securities  traded in major U.S.  markets.
Other considerations  include political and social instability,  expropriations,
higher transaction costs, currency fluctuations, nondeductable withholding taxes
and different settlement practices.

Limit:  The  Large-Cap  Series may invest up to 10% of its assets at the time of
investment in foreign securities (of the type described herein).

Financial  Futures:  A  financial  futures  transaction  is  an  exchange-traded
contract  to  buy  or  sell a  standard  quantity  and  quality  of a  financial
instrument or index at a specific  future date and price.  The Large-Cap  Series
may  deal  in  financial  futures  transactions  with  respect  to the  type  of
securities described herein, including indices of such securities and options on
such financial futures.

Risk: The price behavior of the futures  contract may not correlate with that of
the item being hedged.

Limit:  The  Large-Cap  Series  will not enter into any  futures  contracts,  or
options  thereon,  if the aggregate  market value of the  securities  covered by
futures  contracts  plus options on such  financial  futures  exceeds 50% of the
Series' total assets.
<PAGE>

HOW WE INVEST - SMALL-CAP SERIES

The stocks in which the Small-Cap Series  generally  invests are those which, in
Fund management's judgment, are selling below intrinsic value and at prices that
do not adequately reflect their long-term business  potential.  Selected smaller
stocks may be undervalued  because they are often  overlooked by many investors,
or  because  the  public  is overly  pessimistic  about a  company's  prospects.
Accordingly,  their  prices  can rise  either as a result of  improved  business
fundamentals,  particularly when earnings grow faster than general expectations,
or as more investors come to recognize the full extent of a company's underlying
potential.  The price of shares in relation to book value,  sales,  asset value,
earnings,  dividends and cash flow,  both  historical and  prospective,  are key
determinants in the security  selection  process.  These criteria are not rigid,
and other stocks may be included in the Small-Cap  Series' portfolio if they are
expected to help it attain its  objective.  These criteria can be changed by the
Fund's Board of Directors.

The Small-Cap Series may,  however,  invest up to 35% of its total assets in the
securities of any issuer without regard to its size or the market capitalization
of its common stock. Companies in which the Small-Cap Series is likely to invest
may have limited  product  lines,  markets or financial  resources  and may lack
management  depth or  experience.  The  securities  of these  companies may have
limited  marketability  and may be  subject  to more  abrupt or  erratic  market
movements than securities of larger,  more  established  companies or the market
averages in general.

The Small-Cap Series is permitted to utilize,  within limits  established by the
Board of Directors,  the following  investment  policies in an effort to enhance
the  Small-Cap  Series'  performance.  If no limit is disclosed for a particular
investment  policy,  this means that the Board of Directors  did not establish a
limit for such  investment  policy.  These policies have risks  associated  with
them.  However,  the Small-Cap Series follows certain  practices that may reduce
these risks. To the extent the Small-Cap Series utilizes some of these policies,
its overall performance may be positively or negatively affected.

Options  Transactions:  The Small-Cap Series may purchase and write (i.e., sell)
put and call options on equity  securities  or stock  indices that are traded on
national securities exchanges.

A put option on equity securities gives the purchaser,  in return for a premium,
the right, for a specified period of time, to sell the securities subject to the
option to the writer of the put at the specified  exercise price.  The writer of
the put option, in return for the premium, has the obligation,  upon exercise of
the option,  to acquire the  securities  underlying  the option at the  exercise
price.

A call option on equity securities gives the purchaser,  in return for a premium
paid,  the  right for a  specified  period of time to  purchase  the  securities
subject to the option at a  specified  price  (the  "exercise  price" or "strike
price").  The  writer of a call  option,  in  return  for the  premium,  has the
obligation, upon exercise of the option, to deliver, depending upon the terms of
the option contract,  the underlying securities to the purchaser upon receipt of
the exercise price.

Options on stock  indices  are  similar to options on equity  securities  except
that,  rather  than the right to take or make  delivery  of stock at a specified
price,  an option on a stock index  gives the holder the right,  in return for a
premium paid, to receive,  upon exercise of the option, an amount of cash if the
closing level of the stock index upon which the option is based is greater than,
in the case of a call, or less than, in the case of a put, the exercise price of
the option. The writer of an index option, in return for a premium, is obligated
to pay the amount of cash due upon exercise of the option.

Risk: The Small-Cap  Series,  as the writer of a put option,  might therefore be
obligated to purchase  underlying  securities for more than their current market
value.

When the Small-Cap  Series  writes a call option,  it gives up the potential for
gain on the underlying  securities in excess of the exercise price of the option
during the period that the option is open.

See "Stock Index Futures" below.

Limit:  The  Small-Cap  Series may only write  covered put options to the extent
that cover for such  options  does not exceed 25% of the  Small-Cap  Series' net
assets. The Small-Cap Series will not purchase an option if, as a result of such
purchase,  more than 20% of its total  assets  would be invested in premiums for
such options.
<PAGE>

The Small-Cap Series will write only "covered" options. An option is covered if,
so long as the  Small-Cap  Series  is  obligated  under the  option,  it owns an
offsetting  position  in the  underlying  securities  or  maintains  cash,  U.S.
Government  securities or other liquid  high-grade debt obligations with a value
sufficient at all times to cover its obligations in a segregated account.

See  "Investment  Objective  and Policies --  Limitation on Purchase and Sale of
Stock  Options,  Options  on Stock  Indices  and  Stock  Index  Futures"  in the
Statement of Additional Information.

Stock Index Futures: A stock index futures contract is an agreement in which one
party agrees to deliver to another an amount of cash equal to a specific  dollar
amount times the  difference  between a specific stock index at the close of the
last trading day of the  contract and the price at which the  agreement is made.
No physical delivery of the underlying stocks in the index is made.

Risk:  Participation in the options or futures markets involves investment risks
and transaction  costs to which the Small-Cap Series would not be subject absent
the use of these strategies.  If the Small-Cap Series management's prediction of
movement in the direction of the securities  markets is inaccurate,  the adverse
consequences  to the  Series  may  leave  it in a  worse  position  than if such
strategies  were not used.  Risks inherent in the use of options and stock index
futures  include (1)  dependence on  management's  ability to predict  correctly
movements in the direction of specific  securities  being hedged or the movement
in stock  indices;  (2) imperfect  correlation  between the price of options and
stock  index  futures and options  thereon  and  movements  in the prices of the
securities being hedged; (3) the fact that skills needed to use these strategies
are different from those needed to select portfolio securities; (4) the possible
absence of a liquid secondary market for any particular  instrument at any time;
(5) the possible  need to defer  closing out certain  hedged  positions to avoid
adverse tax  consequences;  and (6) daily limits on price variance for a futures
contract or related options  imposed by certain futures  exchanges and boards of
trade may restrict transactions in such securities on a particular day.

See  "Investment  Objective  and  Policies"  and  "Taxes"  in the  Statement  of
Additional Information.

Limit:  The  Small-Cap  Series may not purchase or sell stock index  futures if,
immediately  thereafter,  more than one-third of its net assets would be hedged.
In  addition,  except in the case of a call  written and held on the same index,
the  Small-Cap  Series  will write call  options on indices or sell stock  index
futures only if the amount resulting from the multiplication of the then current
level of the index (or indices) upon which the options or futures contract(s) is
based,  the  applicable  multiplier(s),  and the  number of  futures  or options
contracts which would be outstanding  would not exceed one-third of the value of
the Small-Cap Series' net assets.

The  Small-Cap  Series'  ability to enter into stock  index  futures  and listed
options is limited by the  requirements of the Internal Revenue Code of 1986, as
amended  (the  "Internal  Revenue  Code"),  for  qualification,  as a  regulated
investment company.

See "Taxes" in the Statement of Additional Information.

Foreign Investments:  The Small-Cap Series may invest in securities (of the type
described herein) that are primarily traded in foreign countries.

Risk:  Securities  markets of foreign countries in which we 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 or  reduction  to  shareholders  and  different
securities settlement  practices.  Foreign securities may be traded on days that
we do not value our portfolio securities, and, accordingly, net asset values may
be  significantly  affected  on days when  shareholders  do not have access to a
Series.

Limit: Up to 35% of the Small-Cap Series' net assets (at the time of investment)
may be invested in securities that are primarily traded in foreign countries.


<PAGE>

Forward Foreign Currency  Contracts:  The Small-Cap Series may utilize a forward
foreign  currency  contract  which  involves an obligation to purchase or sell a
specific  amount of a currency at a set price on a future  date.  The  Small-Cap
Series may enter into  forward  foreign  currency  contracts  in  primarily  two
circumstances.  First,  when the Small-Cap  Series desires 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 Small-Cap  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 Small-Cap Series may
enter  into  a  forward   contract  to  sell  the  amount  of  foreign  currency
approximating the value of some or all of the portfolio  securities  denominated
in   such   foreign   currency   or,   in   the    alternative,    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 in which the
portfolio  securities  are  denominated  if such  securities  are sold) which it
expects to decline in a similar manner but that has a lower transaction cost.

Risk:  Precise  matching of the forward contract and the value of the securities
involved will generally not be possible.

Foreign Currency Put and Call Options: The Small-Cap Series may purchase foreign
currency put options and write foreign  currency call options on U.S.  exchanges
or U.S.  over-the-counter  markets  ("OTC").  A put option  gives the  Small-Cap
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.

A foreign  currency  call  option  written  by the  Small-Cap  Series  gives the
purchaser,  upon payment of a premium,  the right to purchase from the Small-Cap
Series a currency at the exercise price until the expiration of the option.  The
Small-Cap  Series  may  write  a call  option  on a  foreign  currency  only  in
conjunction with a purchase of a put option on that currency ("Cross  Hedging").
Such a strategy is designed to reduce the cost of downside  currency  protection
by limiting currency appreciation potential.

Risk:  OTC options are generally less liquid and involve issuer credit risk. The
staff of the SEC has taken the  position  that  purchased  OTC  options  and the
assets used as "cover" for written OTC options are  illiquid  securities  unless
the Small-Cap Series and the counterparty  have provided for the Series,  at the
Series'  election,  to unwind the OTC  option.  The  exercise  of such an option
ordinarily  would  involve  the  payment  by the  Small-Cap  Series of an amount
designed to reflect the counterparty's  economic loss from an early termination,
but does allow the Series to treat the assets used as "cover" as "liquid."

Limit:  The premiums paid for such foreign  currency put options will not exceed
5% of the net assets of the Small-Cap Series.  Unlisted  options,  together with
other  illiquid  securities,  may  comprise  no more  than 15% of the  Small-Cap
Series'  net assets.  The face value of such  currency  call  option  writing or
cross-hedging  may not exceed 90% of the value of the securities  denominated in
such currency (a) invested in by the Small-Cap Series to cover such call writing
or (b) to be crossed.

Debt Securities:  The Small-Cap Series may engage in investing in straight bonds
or other debt securities, including lower rated, high-yield bonds.

Risk:  When interest  rates rise the value of debt  securities  tend to fall and
when interest rates fall the value of debt  securities  tend to rise. The longer
the maturity of a debt security, the more this volatility tends to occur.

Limit:  The Small-Cap  Series will not invest more than 5% of its assets (at the
time of investment) in lower rated (BB/Ba or lower), high-yield bonds.

Repurchase  Agreements:  The  Small-Cap  Series  may,  on  occasion,  enter into
repurchase agreements whereby the seller of a security agrees to repurchase that
security  at a mutually  agreed-upon  time and price.  The period of maturity is
usually quite short,  possibly  overnight or a few days,  although it may extend
over a number of months.  The resale price is in excess of the  purchase  price,
reflecting an  agreed-upon  rate of return  effective for the period of time the
Small-Cap  Series'  money is invested in the  security.  The  Small-Cap  Series'
repurchase  agreements will at all times be fully collateralized in an amount at
least equal to the purchase  price,  including  accrued  interest  earned on the
underlying securities.  The instruments held as collateral are valued daily, and
if the value of the  instruments  declines,  the  Small-Cap  Series will require
additional collateral.
<PAGE>

Risk:  If the  seller  defaults  and the value of the  collateral  securing  the
repurchase agreement declines, the Small-Cap Series may incur a loss.

When-issued  or delayed  delivery  transactions:  Such  transactions  arise when
securities  are  purchased  or sold by the  Small-Cap  Series  with  payment and
delivery  taking  place  as much as a month  or more in the  future  in order to
secure what is considered to be an advantageous price and yield to the Series at
the time of entering other liquid  high-grade  debt  obligations  having a value
equal to or greater than the Series'  purchase  commitments;  the custodian will
likewise segregate securities sold on a delayed delivery basis.

Risk:  The  securities  so purchased  are subject to market  fluctuation  and no
interest  accrues  to the  purchaser  during  the period  between  purchase  and
settlement.  At the time of delivery of the  securities the value may be more or
less than the purchase  price and an increase in the percentage of the Small-Cap
Series'  assets  committed to the purchase of  securities  on a  when-issued  or
delayed  delivery  basis may  increase the  volatility  of the Series' net asset
value.

Short Sales: The Small-Cap Series may make short sales of securities or maintain
a short  position,  provided that at all times when a short position is open the
Series owns an equal amount of such securities or securities convertible into or
exchangeable,  without payment of any further consideration, for an equal amount
of the securities of the same issuer as the securities sold short (a "short sale
against-the-box").

Risk:  There  may not  always  be  perfect  correlation  between  a  short  sale
against-the-box  and the deferral of realization of gain or loss for federal tax
purposes.

Limit:  Short sales will be made primarily to defer  realization of gain or loss
for federal tax purposes. The Small-Cap Series does not intend to have more than
5% of its net assets (determined at the time of the short sale) subject to short
sales against-the-box.

OTHER POLICIES COMMON TO BOTH SERIES

Illiquid  Securities:  Securities  not traded on the open  market.  May  include
illiquid Rule 144A securities.

Risk:  Certain securities may be difficult or impossible to sell at the time and
price the seller would like.

Limit:  Each Series may invest up to 15% of its assets in  illiquid  securities.
Securities  determined by the Board of Directors to be liquid are not subject to
this limitation.

Rule  144A  Securities:  Securities  determined  by the  Directors  to be liquid
pursuant to Securities and Exchange Commission Rule 144A (the "Rule"). 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.

Risk:  Investments  in Rule 144A  securities  initially  determined to be liquid
could have the effect of  diminishing  the level of a Series'  liquidity  during
periods of decreased market interest in such securities.

Borrowing:  Each Series may borrow money.

Risk:  Depending on the  circumstances,  the interest paid on borrowed money may
reduce a Series' return.

Limit: Not in excess of 331/3% of total assets  (including the amount borrowed),
and then only as a temporary measure for extraordinary or emergency purposes. Up
to an additional 5% of total assets are available for temporary  purposes.  Each
Series may obtain such  short-term  credit as may be necessary for the clearance
of purchases and sales of portfolio securities.

Rights and  Warrants:  Each Series may hold or sell any  property or  securities
which it may obtain through the exercise of conversion  rights or warrants.  The
term  "warrants"  includes  warrants  which  are not  listed  on the New York or
American Stock Exchanges.
<PAGE>

Limit:  Each Series has no present intention to commit more than 5% of its gross
assets to rights and warrants.

Closed-End Investment Companies: Each Series may invest in closed-end investment
companies.

Risk:  Shares of such  investment  companies  sometimes  trade at a discount  or
premium in  relation to their net asset  value and there may be  duplication  of
fees,  for example,  to the extent that a Series and the  closed-end  investment
company both charge a management fee.

Limit:  No more  than 5% of the  gross  assets of a Series  may be  invested  in
closed-end investment companies.

Securities  Lending:  The lending of securities to financial  institutions which
provide  continuous  collateral  equal to the  market  value  of the  securities
loaned.

Risk:  Delay in  recovery  of  collateral  and loss  should the  borrower of the
security fail financially.

Limit: Loans, in the aggregate, may not exceed 5% of the Series' total assets.

Temporary  Investments:  For temporary  defensive  purposes or to create reserve
purchasing  power  pending  other   investments,   each  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.  Neither  an
issuer's  ceasing to be rated investment grade nor a rating reduction below that
grade will require elimination of a bond from our portfolios.

Objective, Restriction and Policy Changes.

A  Series  will  not  change  its  investment   objective  or  its   fundamental
restrictions  without  shareholder  approval.  If a Series  determines  that its
objective  can best be achieved by a substantive  change in  investment  policy,
which may be  changed  without  shareholder  approval,  the Series may make such
change by disclosing it in the prospectus.

For more information about investment  policies,  restrictions and risk factors,
see the Statement of Additional Information.

SALES COMPENSATION

As part of its plan for  distributing  shares,  the Fund, along with Lord Abbett
Distributor,  pays compensation to Authorized  Institutions that sell the Fund's
shares.  These firms typically pass along a portion of this compensation to your
financial representative.

Compensation  payments originate from two sources:  sales charges and 12b-1 fees
that are paid out of the Fund's assets ("12b-1" refers to the federal securities
regulation  authorizing  annual fees of this type).  The 12b-1 fee rates vary by
share class, according to the Rule 12b-1 plan adopted by the Fund for each share
class.  The sales  charges and 12b-1 fees paid by investors  are detailed in the
class-by-class  information  under  "Investor  Expenses"  and  "Purchases".  The
portion  of  these  expenses  that  are  paid  as   compensation  to  Authorized
Institutions,  such as your  dealer,  are shown in the chart on the last page of
this Prospectus.  Sometimes  compensation is not paid where tracking data is not
available for certain accounts and where the Authorized  Institution waives part
of the compensation as with an account under a Mutual Fund Wrap-Fee Program.

Rule  12b-1  distribution  fees  may be used to pay for  sales  compensation  to
Authorized Institutions,  for any activity which is primarily intended to result
in the  sale of  shares  and,  for  Class  B  shares,  the  financing  of  sales
commissions.

First  Year  Compensation.  Whenever  you make an  investment  in the Fund,  the
Authorized  Institution  receives  compensation as described in the chart on the
last page of this Prospectus.

Annual  Compensation  After First Year.  Beginning with the second year after an
investment is made, the Authorized  Institution  receives annual compensation as
described in the chart on the last page of this Prospectus.

Additional Concessions may be paid to Authorized Institutions from time to time.
<PAGE>

GLOSSARY OF TERMS

Additional Concessions. A supplemental annual distribution fee equal to 0.10% of
the  average  daily  net  asset  value of the  Class A shares  is  available  to
Authorized  Institutions which have a program for the promotion and retention of
such shares satisfying Lord Abbett Distributor.  Class A shares held pursuant to
a  satisfactory  program  would,  for  example,  (i)  constitute  a  significant
percentage of the Fund's net assets,  (ii) be held for a  substantial  length of
time and/or (iii) have a lower than average redemption rate.

Lord Abbett Distributor may, for specified periods,  allow dealers to retain the
full sales charge for sales of shares or may pay an  additional  concession to a
dealer who sells a minimum  dollar  amount of our shares  and/or shares of other
Lord Abbett-sponsored funds. In some instances, such additional concessions will
be offered  only to certain  dealers  expected  to sell  significant  amounts of
shares.  Lord Abbett  Distributor may, from time to time,  implement  promotions
under which Lord Abbett  Distributor  will pay a fee to dealers  with respect to
certain  purchases  not  involving  imposition  of a  sales  charge.  Additional
payments may be paid from Lord Abbett  Distributor's  own  resources and will be
made in the form of cash or,  if  permitted,  non-cash  payments.  The  non-cash
payments will include business  seminars at Lord Abbett's  headquarters or other
locations, including meals and entertainment, or the receipt of merchandise. The
cash payments may include payment of various business expenses of the dealer.

In selecting dealers to execute portfolio transactions for the Fund's portfolio,
if two or more dealers are considered  capable of obtaining best  execution,  we
may  prefer  the  dealer  who has sold our  shares  and/or  shares of other Lord
Abbett-sponsored funds.

Authorized  Institutions.  Institutions and persons  permitted by law to receive
service  and/or  distribution  fees  under a Rule  12b-1  plan  are  "authorized
institutions".

Eligible  Fund.  (a) Any Lord  Abbett-sponsored  fund except  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;  Lord Abbett Equity Fund; Lord Abbett
Series  Fund;  Lord Abbett  Research  Fund -- Mid-Cap  Series;  Lord Abbett U.S.
Government  Securities Money Market Fund ("GSMMF") (except for holdings in GSMMF
which are  attributable  to any shares  exchanged from the Lord Abbett Family of
Funds). (b) Any Authorized Institution's affiliated money market fund satisfying
Lord Abbett Distributor as to certain omnibus account and other criteria.

Eligible  Guarantor.  Any broker or bank that is a member of the medallion stamp
program.  Most major securities  firms and banks are members of this program.  A
notary public is not an eligible guarantor.

Eligible  Mandatory  Distributions.  If  Class B shares  represent  a part of an
individual's total IRA or 403(b)  investment,  the CDSC waiver is available only
for that portion of a mandatory  distribution  which bears the same  relation to
the entire  mandatory  distribution as the B share investment bears to the total
investment.

Employees  of Lord  Abbett/Fund  Directors  (Trustees).  The terms  "directors,"
"trustees"  (of a Fund) and  "employees"  (of Lord Abbett)  include a director's
(trustee's) or employee's  spouse  (including the surviving spouse of a deceased
director  (trustee)  or  employee).   The  terms  "directors,"   "trustees"  and
"employees  of Lord  Abbett"  also  include  other  family  members  and retired
directors (trustees) and employees.

Legal  Capacity.  With respect to a  redemption  request,  if (for  example) the
request is on behalf of the estate of a deceased shareholder,  John W. Doe, by a
person  (Robert A. Doe) who has the legal  capacity to act for the estate of the
deceased  shareholder because he is the executor of the estate, then the request
must be executed as  follows:  Robert A. Doe,  Executor of the Estate of John W.
Doe.

Similarly,  if (for  example)  the  redemption  request  is on behalf of the ABC
Corporation  by a person  (Mary B. Doe) that has the  legal  capacity  to act on
behalf of this  corporation,  because she is the  President of the  corporation,
then the request must be executed as follows:  ABC  Corporation  by Mary B. Doe,
President.
<PAGE>

An acceptable form of guarantee would be as follows:
o In the case of the estate -

   Robert A. Doe, Executor
   of the Estate of John W. Doe

[Date]              SIGNATURE GUARANTEED
          

o In the case of the corporation -

        ABC Corporation
        Mary B. Doe
        By Mary B. Doe, President

[Date]              SIGNATURE GUARANTEED



Lord Abbett Consultants/Advisers.  Consultants and advisers to Lord Abbett, Lord
Abbett Distributor or Lord  Abbett-sponsored  funds who consent to such purchase
if such persons provide services to Lord Abbett, Lord Abbett Distributor or such
funds on a continuing basis and are familiar with such fund.

Lord Abbett  Distributor  LLC. Lord Abbett  Distributor is the Fund's  exclusive
selling agent.  Lord Abbett  Distributor is obligated to use its best efforts to
find  purchasers for the shares of the Fund, and to make  reasonable  efforts to
sell  Fund  shares  so  long  as,  in  Lord  Abbett  Distributor's  judgment,  a
substantial distribution can be obtained.

Mutual Fund Wrap-Fee Program. Certain unaffiliated authorized brokers,  dealers,
registered investment advisers or other financial  institutions who have entered
into an  agreement  with Lord Abbett  Distributor  in  accordance  with  certain
standards approved by Lord Abbett  Distributor,  providing  specifically for the
use of our shares in particular  investment products made available for a fee to
clients of such  brokers,  dealers,  registered  investment  advisers  and other
financial institutions.

Purchaser. The term "purchaser" includes: (i) an individual,  (ii) an individual
and his or her  spouse and  children  under the age of 21 and (iii) a trustee or
other fiduciary  purchasing shares for a single trust estate or single fiduciary
account  (including a pension,  profit-sharing,  or other employee benefit trust
qualified  under  Section  401 of the  Internal  Revenue  Code -- more  than one
qualified   employee  benefit  trust  of  a  single   employer,   including  its
consolidated  subsidiaries,  may be considered a single trust,  as may qualified
plans of multiple  employers  registered in the name of a single bank trustee as
one account), although more than one beneficiary is involved.

Retirement Plans. Employer-sponsored retirement plans under the Internal Revenue
Code.

Special   Retirement  Wrap  Program.   A  program  sponsored  by  an  authorized
institution  showing  one or  more  characteristics  distinguishing  it,  in the
opinion of Lord Abbett  Distributor  from a mutual fund wrap-fee  program.  Such
characteristics  include,  among  other  things,  the  fact  that an  authorized
institution  does not charge its  clients  any fee of a  consulting  or advisory
nature that is  economically  equivalent to the  distribution  fee under Class A
12b-1  Plan  and the fact  that  the  program  relates  to  participant-directed
Retirement Plans.

Total Return. "Total return" for the one-, five- and ten-year periods represents
the average annual  compounded  rate of return on an investment of $1,000 in the
Fund at the maximum public offering price. When total return is quoted for Class
A shares,  it includes the payment of the maximum  initial  sales  charge.  When
total return is shown for Class B and Class C shares,  it reflects the effect of
the  applicable  CDSC.  Total return also may be presented  for other periods or
based on  investments  at reduced  sales charge  levels or net asset value.  Any
quotation of total return not  reflecting  the maximum sales charge  (front-end,
level, or back-end) would be reduced if such sales charge were used.  Quotations
of yield or total return for any period when an expense  limitation is in effect
will be  greater  than if the  limitation  had not  been in  effect.  See  "Past
Performance"  in the  Statement of  Additional  Information  for a more detailed
description.
<PAGE>

Yield.  Each class of shares  calculates  its "yield" by dividing the annualized
net investment  income per share on the portfolio  during a 30-day period by the
maximum  offering  price on the last day of the period.  The yield of each class
will differ because of the different  expenses  (including actual 12b-1 fees) of
each class of shares. The yield data represents a hypothetical investment return
on the  portfolio,  and does not measure  investment  return  based on dividends
actually paid to shareholders. To show that return, a dividend distribution rate
may be  calculated.  Dividend  distribution  rate is  calculated by dividing the
dividends of a class derived from net  investment  income during a stated period
by the maximum offering price on the last day of the period. Yields and dividend
distribution  rate for  Class A shares  reflect  the  deduction  of the  maximum
initial sales charge,  but may also be shown based on the Fund's net asset value
per share. Yields for Class B and Class C shares do not reflect the deduction of
the CDSC.


This  Prospectus  does not constitute an offering in any  jurisdiction  in which
such offer is not  authorized  or in which the person  making  such offer is not
qualified to do so or to anyone to whom it is unlawful to make such offer.

No person is authorized to give any  information or to make any  representations
not contained in this Prospectus or in supplemental sales material authorized by
the  Fund  and  no  person  is  entitled  to  rely  upon  any   information   or
representation not contained herein or therein.
<PAGE>

The performance of the Class A shares of each multi-class  Series which is shown
in the comparisons  below will be greater than or less than that shown below for
Class B and Class C shares based on the  differences  in sales  charges and fees
paid by shareholders investing in the different classes.

Comparison  of change in value of a $10,000  investment in Class A shares in the
Large-Cap Series,  assuming  reinvestment of all dividends and distributions and
the unmanaged Standard & Poor's 500 Index.

The following chart was represented by a line graph.

          The Series               The Series                    Standard
          (Class A Shares)         (Class A Shares)              & Poor's
Date      at Net Asset Value       at Maximum Offering Price(1)  500 Index(2)

6/3/92         10,000               9,425                        10,000
11/30/92       10,610              10,000                        10,534
11/30/93       12,490              11,772                        11,597
11/30/94       13,516              12,739                        11,719
11/30/95       17,952              16,921                        16,048
11/30/96       22,665              21,362                        20,503
11/30/97       27,169              25,607                        26,349


Average Annual Total Return for Class A Shares(3)

          1 year    3 Years   Life of Series (6/30/92-11/30/97) 
          13.00%    23.75%    18.67%

Average Annual Total Return for Class B Shares(4)

        1 year      Life of Series (8/1/96-11/30/97)
        14.16%      25.35%

Average Annual Total Return for Class C Shares(5)

        Life of Series (4/1/97-11/30/97)
        17.22%

(1)Data  reflects  the  deduction of the maximum  initial  sales charge of 5.75%
applicable to Class A shares.

(2)Performance  numbers  for the  unmanaged  Standard  & Poor's 500 Index do not
reflect transaction costs or management fees. An investor cannot invest directly
in the Standard & Poor's 500 Index.

(3)Total  return is the percent change in value,  after deduction of the maximum
initial sales charge of 5.75%  applicable to Class A shares,  with all dividends
and  distributions  reinvested  for the periods  shown ending  November 30, 1997
using the SEC-required uniform method to compute such return.

(4)The  Class B shares were first  offered on 8/1/96.  Performance  reflects the
deduction of a 4% CDSC.

(5)The Class C shares were first offered on 4/1/97.  Performance is at net asset
value.



Comparison  of change in value of a $10,000  investment in Class A shares in the
Small-Cap Series,  assuming  reinvestment of all dividends and distributions and
the unmanaged Standard & Poor's 500 Index.

The following chart was represented by a line graph.


          The Series               The Series                    
          (Class A Shares)         (Class A Shares)              Russell 2000
Date      at Net Asset Value       at Maximum Offering Price(1)  Index(2)

12/13/95       10,000               9,425                        10,000
11/30/96       12,824              12,087                        11,656
11/30/97       17,683              16,667                        14,385


Average Annual Total Return for Class A Shares(3)

        1 year  Life of Series  (12/13/95-11/30/97)
        30.00%  29.65%

Average Annual  Total  Return  for  Class B  Shares(4)  1 year  Life  of  Series
        (11/15/96-11/30/97) 31.52% 33.51%

Average Annual Total Return for Class C Shares(5)
        Life of Series  (4/1/97-11/30/97)
        27.05%

(1)Data  reflects  the  deduction of the maximum  initial  sales charge of 5.75%
applicable to Class A shares.

(2)Performance  numbers  for the  unmanaged  Standard  & Poor's 500 Index do not
reflect transaction costs or management fees. An investor cannot invest directly
in the Standard & Poor's 500 Index.

(3)Total  return is the percent change in value,  after deduction of the maximum
initial sales charge of 5.75%  applicable to Class A shares,  with all dividends
and  distributions  reinvested  for the periods  shown ending  November 30, 1997
using the SEC-required uniform method to compute such return.

(4)The Class B shares were first offered on 11/15/96.  Performance  reflects the
deduction of a 4% CDSC.

(5)The Class C shares were first offered on 4/1/97.  Performance is at net asset
value.

<PAGE>

                            FIRST YEAR COMPENSATION
<TABLE>
<CAPTION>
Class A investments

                                        Front-end
                                        sales charge             Dealer's
                                        paid by investors        concession              Service fee(1)       Total compensation(2)
                                        (% of offering price)    (% of offering price)   (%of net investment) (% of offering price)
<S>                                     <C>                      <C>                     <C>                  <C>
Less than $50,000                       5.75%                    5.00%                    0.25%               5.24%
$50,000 - $99,999                       4.75%                    4.00%                    0.25%               4.24%
$100,000 - $249,999                     3.75%                    3.25%                    0.25%               3.49%
$250,000 - $499,999                     2.75%                    2.25%                    0.25%               2.49%
$500,000 - $999,999                     2.00%                    1.75%                    0.25%               2.00%

$1 million or more(3) or
Retirement Plan - 
 100 or more eligible employees(3) or
Special Retirement Wrap Program(3)

First $5 million                   no front-end sales charge     1.00%                    0.25%               1.25%
Next $5 million above that         no front-end sales charge     0.55%                    0.25%               0.80%
Next $40 million above that        no front-end sales charge     0.50%                    0.25%               0.75%
Over $50 million                   no front-end sales charge     0.25%                    0.25%               0.50%
Class B  investments                                             Paid at time of sale (% of net asset value)
All  amounts                       no front-end sales charge     3.75%                    0.25%               4.00%
Class C investments
All  amounts                       no front-end sales charge     0.75%                    0.25%               1.00%

ANNUAL COMPENSATION AFTER FIRST YEAR

Class A investments
All amounts                        no front-end sales charge      none                    0.25%               0.25%
Class B  investments                                                  Percentage of average net assets (4)
All  amounts                       no front-end sales charge       none                   0.25%               0.25%
Class C investments
All  amounts                       no front-end sales charge       0.75%                  0.25%               1.00%

<FN>
(1) The  service  fee for Class A shares  is paid  quarterly.  The first  year's
service fee on Class B and C shares is paid at the time of sale.

(2)   Reallowance/concession   percentages   and  service  fee  percentages  are
calculated   from  different   amounts,   and  therefore  may  not  equal  total
compensation   percentages  if  combined  using  simple   addition.   Additional
Concessions may be paid to Authorized Institutions from time to time.

(3)  Concessions  are paid at the time of sale on all Class A shares sold during
any  12-month  period  starting  from the day of the first net asset value sale.
With  respect  to(a)  Class A share  purchases  at $1  million  or  more,  sales
qualifying at such level under rights of accumulation and statement of intention
privileges are included and(b) for Special  Retirement  Wrap Programs,  only new
sales are eligible and exchanges into the Fund are excluded.

(4) With respect to Class B and C shares, 0.25% and 1.00%, respectively,  of the
average  annual net asset  value of such shares  outstanding  during the quarter
(including distribution reinvestment shares after the first anniversary of their
issuance) is paid to Authorized  Institutions.  These fees are paid quarterly in
arrears.  CDSC  revenues  collected  by Lord  Abbett  Funds  may be used to fund
commission payments when there is no initial sales charge.
</FN>
</TABLE>
<PAGE>

Investment Manager and Underwriter
Lord, Abbett & Co. and Lord Abbett Distributor LLC
The General Motors Building
767 Fifth Avenue
New York, New York 10153-0203
212-848-1800

Custodian
The Bank of New York
48 Wall Street
New York, New York 10286

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

Counsel
Debevoise & Plimpton

Printed in the U.S.A.

LARF-1-498
(4/98)

LORD ABBETT
RESEARCH FUND, INC.
The General Motors Building
767 Fifth Avenue
New York, NY 10153-0203

April 1, 1998                           Application Inside

Lord Abbett
Research Fund

     Large-Cap Series
     Small-Cap Series

<PAGE>
LORD ABBETT


Statement of Additional Information                               April 1, 1998

                         Lord Abbett Research Fund, Inc.
                                Large-Cap Series
                                Small-Cap Series

This Statement of Additional  Information is not a Prospectus.  A Prospectus for
Lord Abbett  Research Fund,  Inc. (the "Fund" or "We") may be obtained from your
securities   dealer  or  from  Lord  Abbett   Distributor   LLC  ("Lord   Abbett
Distributor")  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 April 1, 1998.

Our Board of Directors  has  authority  to create and classify  shares of common
stock in separate  series,  without  further  action by  shareholders.  To date,
70,000,000  shares  of  the  Large-Cap  Series  and  100,000,000  shares  of the
Small-Cap  Series have been authorized at $0.001 par value.  Both Series consist
of three  classes  (A, B and C).  The Board of  Directors  will  allocate  these
authorized shares among the classes of each Series from time to time. All shares
have  equal  noncumulative  voting  rights  and equal  rights  with  respect  to
dividends,  assets and liquidation,  except for certain class-specific expenses.
They are fully paid and  nonassessable  when  issued and have no  preemptive  or
conversion rights.  Although no present plans exist to do so, further series may
be added in the future.  The  Investment  Company Act of 1940,  as amended  (the
"Act"),  requires  that where more than one series  exists,  each series must be
preferred over all other series in respect of assets  specifically  allocated to
such series.

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 class or series affected
by such  matter.  Rule 18f-2  further  provides  that a class or series shall be
deemed to be affected by a matter  unless the  interests of each class or series
in the  matter are  substantially  identical  or the matter  does not affect any
interest of such class or series.  However,  the Rule  exempts the  selection of
independent public accountants, the approval of principal distribution contracts
and the election of directors from the separate voting requirements of the Rule.

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
Distributor.


               TABLE OF CONTENTS                                 PAGE

            1.       Investment Policies                          2
            2.       Directors and Officers                      10
            3.       Investment Advisory and Other Services      12
            4.       Portfolio Transactions                      13
            5.       Purchases, Redemptions
                      and Shareholder Services                   14
            6.       Past Performance                            23
            7.       Taxes                                       24
            8.       Information About The Fund                  25
            9.       Financial Statements                        25

<PAGE>


                                       1.
                               Investment Policies

Fundamental Investment Restrictions.
We are subject to the following investment  restrictions which cannot be changed
without  approval of the holders of a majority of our outstanding  shares.  Each
Series may not:  (1) borrow  money,  except that (i) each Series may borrow from
banks (as defined in the Investment Company Act of 1940, as amended (the "Act"))
in amounts up to 33 1/3% of its total assets  (including  the amount  borrowed),
(ii) each  Series  may  borrow up to an  additional  5% of its total  assets for
temporary  purposes,  (iii) each Series may obtain such short-term credit as may
be necessary for the  clearance of purchases  and sales of portfolio  securities
and (iv) each Series may purchase  securities on margin to the extent  permitted
by applicable law; (2) pledge its assets (other than to secure borrowings, or to
the  extent  permitted  by the  Series'  investment  policies  as  permitted  by
applicable law); (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 subject to this limitation,  and except
further that each Series may lend its  portfolio  securities,  provided that the
lending of portfolio  securities may be made only in accordance  with applicable
law;  (5) buy or sell  real  estate  (except  that  each  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)  or
commodities or commodity  contracts  (except to the extent each Series may do so
in accordance  with  applicable law and without  registering as a commodity pool
operator  under  the  Commodity  Exchange  Act as,  for  example,  with  futures
contracts);  (6) with  respect to 75% of the gross  assets of each  Series,  buy
securities  of one issuer  representing  more than (i) 5% of each Series'  gross
assets,  except  securities  issued or  guaranteed by the U.S.  Government,  its
agencies  or  instrumentalities  or (ii) 10% of the  voting  securities  of such
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 changes 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  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.  Each Series may
not: (1) borrow in excess of 33 1/3% of its total assets  (including  the amount
borrowed),  and then only as a temporary  measure for extraordinary or emergency
purposes; (2) make short sales of securities or maintain a short position except
to the extent permitted by applicable law; (3) invest knowingly more than 15% of
its net assets (at the time of  investment) in illiquid  securities,  except for
securities  qualifying for resale under Rule 144A of the Securities Act of 1933,
deemed to be liquid by the Board of Directors;  (4) invest in the  securities of
other investment  companies except as permitted by applicable law; (5) invest in
securities of issuers which, with their predecessors, have a record of less than
three years' continuous operations, if more than 5% of each Series' total assets
would be  invested  in such  securities  (this  restriction  shall  not apply to
mortgaged-backed  securities,  asset-backed  securities or obligations issued or
guaranteed by the U. S. Government, its agencies or instrumentalities); (6) hold
securities of any issuer if more than 1/2 of 1% of the securities of such issuer
are owned  beneficially  by one or more  officers or directors of the Fund or by
one or more partners or members of the Fund's  underwriter or investment adviser
if these owners in the aggregate own beneficially more than 5% of the securities
of such issuer;  (7) invest in warrants if, at the time of the acquisition,  its
investment in warrants,  valued at the lower of cost or market,  would exceed 5%
of each Series' total assets (included within such limitation, but not to exceed
2% of each Series'  total assets,  are warrants  which are not listed on the New
York or American Stock Exchange or a major foreign exchange); (8) invest in real
estate limited  partnership  interests or interests in oil, gas or other mineral
leases,  or exploration or other development  programs,  except that each Series
may invest in  securities  issued by companies  that engage in oil, gas or other
mineral exploration or other development activities; (9) write, purchase or sell
puts, calls,  straddles,  spreads or combinations thereof,  except to the extent
permitted in the Fund's prospectus and statement of additional  information,  as
they may be  amended  from time to time;  or (10) buy from or sell to any of the
Fund's officers,  directors,  employees, or its investment adviser or any of the

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<PAGE>

Fund's  officers,  directors,  partners or employees,  any securities other than
shares of the Funds' common stock.

For the fiscal year ended  November 30, 1997,  the  portfolio  turnover rate was
30.81% for the Large-Cap  Series  compared to 62.25% for the previous  year. For
the fiscal  year ended  November  30,  1997,  the  Small-Cap  Series'  portfolio
turnover rate was 45.24% compared to 110.09% for the previous fiscal year.

Lending of Portfolio Securities.  Although both Series have no current intention
of doing so, each 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. Each Series 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 either Series' gross
assets.

LARGE-CAP SERIES (ONLY)
Other Investment Restrictions(which can be changed without shareholder approval)

Covered Call Options.  As stated in the  Prospectus,  the  Large-Cap  Series may
write  covered  call  options on  securities  in our  portfolio in an attempt to
increase its income and to provide greater flexibility in the disposition of its
portfolio  securities.  A "call  option"  is a  contract  sold for a price  (the
"premium")  giving its holder the right to buy a specific  number of shares of a
stock at a specific price prior to a specified  date. A "covered call option" is
a call  option  issued on  securities  already  owned by the  writer of the call
option for  delivery to the holder upon the  exercise of the option.  During the
period of the option,  the Large-Cap  Series  forgoes the  opportunity to profit
from any  increase  in the market  price of the  underlying  security  above the
exercise  price of the option (to the extent that the  increase  exceeds our net
premium).   The  Large-Cap   Series  also  may  enter  into  "closing   purchase
transactions"  in order to terminate its  obligation  to deliver the  underlying
security  (this may result in a  short-term  gain or loss).  A closing  purchase
transaction  is the  purchase  of a call  option (at a cost which may be more or
less than the premium received for writing the original call option) on the same
security with the same exercise  price and call period as the option  previously
written.  If the  Large-Cap  Series is unable to enter  into a closing  purchase
transaction,  it may be required to hold a security that it otherwise might have
sold to protect against  depreciation.  The Large-Cap  Series does not intend to
write covered call options with respect to securities  with an aggregate  market
value of more  than 5% of the  Series'  gross  assets  at the time an  option is
written.  This  percentage  limitation  will  not  be  increased  without  prior
disclosure in the Series' current prospectus.

Rights and Warrants.  The Large-Cap  Series may invest in rights and warrants to
purchase  securities.  Included within that amount,  but not to exceed 2% of the
value of the Large-Cap Series' net assets,  may be warrants which are not listed
on the NYSE or American Stock Exchange.

Rights represent a privilege  offered to holders of record of issued  securities
to subscribe (usually on a pro rata basis) for additional securities of the same
class,  of a  different  class  or of a  different  issuer,  as the case may be.
Warrants  represent the privilege to purchase  securities at a stipulated  price
and are usually valid for several  years.  Rights and warrants  generally do not
entitle a holder to  dividends or voting  rights with respect to the  underlying
securities  nor do they  represent  any  rights  in the  assets  of the  issuing
company.

Also, the value of a right or warrant may not necessarily  change with the value
of the underlying securities and rights and warrants cease to have value if they
are not exercised prior to their expiration date.

Options and Financial Futures Transactions

General.  The  Large-Cap  Series  may engage in options  and  financial  futures
transactions in accordance with the Large-Cap  Series  investment  objective and
policies.  Although the Large-Cap Series is not currently employing such options

3
<PAGE>

and financial futures  transactions,  the Series may engage in such transactions
in the future if it appears advantageous to us to do so, in order to cushion the
effects of fluctuating interest rates and adverse market conditions.  The use of
options and financial  futures,  and possible  benefits and attendant risks, are
discussed  below,  along with  information  concerning  certain other investment
policies and techniques.

Financial Futures  Contracts.  The Large-Cap Series may enter into contracts for
the future  delivery of a financial  instrument,  such as a security or the cash
value of a securities index. This investment  technique is designed primarily to
hedge (i.e.,  protect) against  anticipated  future changes in interest rates or
market conditions which otherwise might adversely affect the value of securities
which the  Large-Cap  Series hold or intend to  purchase.  A "sale" of a futures
contract  means the  undertaking  of a  contractual  obligation  to deliver  the
securities  or the cash  value  of an  index  called  for by the  contract  at a
specified price during a specified  delivery  period.  A "purchase" of a futures
contract  means the  undertaking  of a  contractual  obligation  to acquire  the
securities  or cash value of an index at a  specified  price  during a specified
delivery period. At the time of delivery  pursuant to the contract,  adjustments
are  made to  recognize  differences  in value  arising  from  the  delivery  of
securities  which differ from those  specified in the  contract.  In some cases,
securities called for by a futures contract may not have been issued at the time
the contract was written.  The Large-Cap  Series will not enter into any futures
contracts or options on futures  contracts if the  aggregate of the market value
of the securities covered by the Large-Cap Series outstanding  futures contracts
and securities  covered by futures contracts subject to the outstanding  options
written by us would exceed 50% of the Large-Cap Series total assets.

Although  some  financial  futures  contracts by their terms call for the actual
delivery or acquisition of securities, in most cases, a party will close out the
contractual  commitment  before delivery without having to make or take delivery
of the security by purchasing (or selling,  as the case may be) on a commodities
exchange an identical  futures  contract calling for delivery in the same month.
Such a  transaction,  if effected  through a member of an exchange,  cancels the
obligation to make or take delivery of the securities.  All  transactions in the
futures market are made, offset or fulfilled through a clearing house associated
with the exchange on which the contracts are traded.  The Large-Cap  Series will
incur  brokerage fees when it purchases or sells  contracts and will be required
to maintain margin deposits.  At the time it enters into a futures contract,  it
is required to deposit with its custodian,  on behalf of the broker, a specified
amount of cash or  eligible  securities  called  "initial  margin."  The initial
margin  required  for a futures  contract  is set by the  exchange  on which the
contract is traded.  Subsequent payments, called "variation margin," to and from
the broker are made on a daily basis as the market price of the futures contract
fluctuates.  The costs incurred in connection  with futures  transactions  could
reduce our return.  Futures contracts entail risks. If the investment  adviser's
judgment about the general  direction of interest rates or markets is wrong, the
overall  performance  may be poorer than if no such  contracts  had been entered
into.

There may be an  imperfect  correlation  between  movements in prices of futures
contracts and  portfolio  securities  being hedged.  The degree of difference in
price  movements  between  futures  contracts and the  securities (or securities
indices)  being  hedged  depends  upon such things as  variations  in demand for
futures  contracts and  securities  underlying  the  contracts  and  differences
between  the  liquidity  of the markets for such  contracts  and the  securities
underlying  them.  In addition,  the market  prices of futures  contracts may be
affected by certain factors not directly  related to the underlying  securities.
At any given  time,  the  availability  of futures  contracts,  and hence  their
prices, are influenced by credit conditions and margin requirements.  Due to the
possibility  of price  distortions  in the  futures  market  and  because of the
imperfect  correlation  between  movements  in  the  prices  of  securities  and
movements  in the  prices of futures  contracts,  a correct  forecast  of market
trends  by the  investment  adviser  may  not  result  in a  successful  hedging
transaction.

Options on Financial  Futures  Contracts.  The Large-Cap Series may purchase and
write  call and put  options  on  financial  futures  contracts.  An option on a
futures  contract gives the purchaser the right, in return for the premium paid,
to assume a position in a futures contract at a specified  exercise price at any
time during the period of the option.  Upon  exercise,  the writer of the option
delivers the futures contract to the holder at the exercise price. The Large-Cap
Series would be required to deposit with Series'  custodian  initial  margin and
maintenance  margin with  respect to put and call  options on futures  contracts
written by the Series. Options on futures contracts involve risks similar to the
risks relating to transactions in financial futures  contracts  described above.
Generally  speaking,  a given  dollar  amount  used to  purchase  an option on a
financial  futures  contract  can  hedge  a much  greater  value  of  underlying
securities than if that amount were used to directly purchase the same financial
futures.  Should  the  event  it  intends  to hedge  (or  protect)  against  not
materialize,  however,  the  option  may  expire  worthless,  in which  case the
Large-Cap Series would lose the premium paid therefor.

4
<PAGE>

Segregated  Accounts.  To the extent  required  to comply  with  Securities  and
Exchange Commission Release 10666 and subsequent  interpretation  thereof by the
Commission or its staff,  when purchasing a futures  contract,  or writing a put
option,  the  Large-Cap  Series  will  maintain in a  segregated  account at its
custodian  bank  liquid  high  grade  debt  obligations,  such as cash  and U.S.
Government Securities to cover its position.

SMALL-CAP  SERIES  (ONLY) Other  Investment  Restrictions  (which can be changed
without shareholder approval)

Repurchase Agreements. If the Small-Cap Series enters into repurchase agreements
as provided in clause (4) of the fundamental  investment  restrictions 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 Small-Cap Series otherwise may invest.

Foreign  Currency Hedging  Techniques.  The Small-Cap 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 Small-Cap  Series expects to enter into forward
foreign  currency  contracts in primarily  two  circumstances.  First,  when the
Small-Cap  Series  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  Small-Cap  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 Small-Cap Series may
enter  into  a  forward   contract  to  sell  the  amount  of  foreign  currency
approximating  the  value  of some  or all of the  Small-Cap  Series'  portfolio
securities  denominated  in such foreign  currency or, in the  alternative,  the
Small-Cap  Series may use a  cross-hedging  technique  whereby it sells  another
currency  which the  Small-Cap  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 Small-Cap Series does not intend to enter into such forward  contracts under
this second circumstance on a continuous basis.

Management  of the  Fund is by its  officers  on a day to day  basis  under  the
overall supervision of the Board of Directors with advice of Lord, Abbett & Co.

Foreign  Currency Put and Call Options.  The Small-Cap  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.  A put option gives the  Small-Cap
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 Small-Cap
Series' net assets.

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<PAGE>

A call option written by the Small-Cap 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 Small-Cap 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 value of the securities denominated in
such  currency  invested in by the  Small-Cap  Series or in such cross  currency
(referred to above) to cover such call writing.

Limitations  on the  Purchases  and  Sales of Stock  Options,  Options  on Stock
Indices and Stock Index  Futures.  The  Small-Cap  Series may write put and call
options on stocks only if they are covered, and such options must remain covered
so long as the Small-Cap  Series is obligated as a writer.  The Small-Cap Series
will not (a) write puts having an aggregate  exercise  price greater than 25% of
the Series' total net assets; or (b) purchase (i) put options on stocks not held
in the Small-Cap Series'  portfolio,  (ii) put options on stock indices or (iii)
call  options  on stocks or stock  indices  if,  after  any such  purchase,  the
aggregate  premiums  paid for such  options  would  exceed 20% of the  Small-Cap
Series' total net assets.

Call Options on Stock.  The Small-Cap  Series may, from time to time, write call
options on its portfolio  securities.  The Small-Cap  Series may write only call
options which are "covered,"  meaning that the Small-Cap  Series either owns the
underlying  security  or has an absolute  and  immediate  right to acquire  that
security, without additional cash consideration,  upon conversion or exchange of
other  securities  currently held in its portfolio.  In addition,  the Small-Cap
Series will not permit the call to become  uncovered  prior to the expiration of
the option or termination  through a closing  purchase  transaction as described
below. If the Small-Cap Series writes a call option, the purchaser of the option
has the right to buy (and the Series has the  obligation to sell) the underlying
security at the exercise  price  throughout  the term of the option.  The amount
paid to the Small-Cap  Series by the  purchaser of the option is the  "premium."
The Small-Cap  Series'  obligation to deliver the  underlying  security  against
payment of the exercise  price would  terminate  either upon  expiration  of the
option or earlier if the  Small-Cap  Series  were to effect a "closing  purchase
transaction" through the purchase of an equivalent option on an exchange.  There
can be no assurance that a closing  purchase  transaction  can be effected.  The
Small-Cap  Series does not intend to write  covered call options with respect to
securities  with an aggregate  market value of more than 5% of it's gross assets
at the  time an  option  is  written.  This  percentage  limitation  will not be
increased without prior disclosure in our current prospectus.

The Small-Cap Series would not be able to effect a closing purchase  transaction
after it had received notice of exercise.  In order to write a call option,  the
Small-Cap  Series is required  to comply with the rules of The Options  Clearing
Corporation and the various  exchanges with respect to collateral  requirements.
The Small-Cap  Series may not purchase call options except in connection  with a
closing  purchase  transaction.  It is  possible  that the cost of  effecting  a
closing  purchase  transaction  may be greater than the premium  received by the
Small-Cap Series for writing the option.

Generally,  the Small-Cap  Series  intends to write listed  covered call options
during  periods when it  anticipates  declines in the market values of portfolio
securities  because the premiums  received may offset to some extent the decline
in the Small-Cap  Series' net asset value  occasioned by such declines in market
value.  Except as part of the "sell  discipline"  described below, the Small-Cap
Series will  generally not write listed covered call options when it anticipates
that the market values of it's portfolio securities will increase.

One reason for the Small-Cap  Series to write call options is as part of a "sell
discipline." If the Small-Cap Series decides that a portfolio  security would be
overvalued  and should be sold at a certain price higher than the current price,
it could  write an option on the stock at the  higher  price.  Should  the stock
subsequently reach that price and the option be exercised,  the Small-Cap Series
would, in effect, have increased the selling price of that stock, which it would
have sold at that price in any event, by the amount of the premium. In the event
the market price of the stock  declined and the option were not  exercised,  the
premium would offset all or some portion of the decline. It is possible that the
price of the stock could increase beyond the exercise price; in that event,  the
Small-Cap  Series would forego the  opportunity to sell the stock at that higher
price.

In  addition,  call  options  may be used as part  of a  different  strategy  in
connection with sales of portfolio  securities.  If, in the judgment of the Fund
Management, the market price of a stock is overvalued and it should be sold, the
Small-Cap  Series  may  elect  to write a call  option  with an  exercise  price

6
<PAGE>

substantially  below  the  current  market  price.  As long as the  value of the
underlying  security  remains  above the  exercise  price during the term of the
option,  the option will, in all  probability,  be exercised,  in which case the
Small-Cap  Series will be required to sell the stock at the exercise  price.  If
the sum of the premium and the  exercise  price  exceeds the market price of the
stock at the time the call option is written,  the Small-Cap  Series  would,  in
effect,  have  increased  the selling price of the stock.  The Small-Cap  Series
would not write a call option in these  circumstances  if the sum of the premium
and the exercise price were less than the current market price of the stock.

Put Options on Stock. The Small-Cap Series may also write listed put options. If
the Small-Cap  Series  writes a put option,  it is obligated to purchase a given
security at a specified price at any time during the term of the option.

Writing listed put options is a useful  portfolio  investment  strategy when the
Small-Cap Series has cash or other reserves available for investment as a result
of  sales  of  Small-Cap  Series  shares  or,  more  importantly,  because  Fund
Management  believes  a more  defensive  and less  fully  invested  position  is
desirable in light of market conditions. If the Fund Management wishes to invest
its cash or reserves  in a  particular  security  at a price lower than  current
market value,  it may write a put option on that  security at an exercise  price
which reflects the lower price it is willing to pay. The buyer of the put option
generally will not exercise the option unless the market price of the underlying
security  declines to a price near or below the exercise price. If the Small-Cap
Series writes a listed put, the price of the  underlying  stock declines and the
option is exercised,  the premium, net of transaction  charges,  will reduce the
purchase  price paid by the  Small-Cap  Series  for the stock.  The price of the
stock may  decline  by an amount in excess of the  premium,  in which  event the
Small-Cap  Series would have foregone an  opportunity to purchase the stock at a
lower price.

If, prior to the exercise of a put option,  the Small-Cap Series determines that
it no longer  wishes to  invest  in the stock on which the put  option  had been
written,  the Series may be able to effect a closing purchase  transaction on an
exchange by  purchasing  a put option of the same series as the one which it has
previously written.  The cost of effecting a closing purchase transaction may be
greater  than the  premium  received  on writing  the put option and there is no
guarantee that a closing purchase transaction can be effected.

Stock Index Options.  Except as describe below,  the Small-Cap Series will write
call  options on indices  only if on such date it holds a portfolio of stocks at
least equal to the value of the index times the  multiplier  times the number of
contracts.  When the Small-Cap  Series  writes a call option on a  broadly-based
stock market index,  the Small-Cap Series will segregate or put into escrow with
its custodian,  or pledge to a broker as collateral for the option,  one or more
"qualified  securities" with a market value at the time the option is written of
not less than 100% of the current  index value  times the  multiplier  times the
number of contracts.

Segregated  Accounts.  If the  Small-Cap  Series  has  written  an  option on an
industry or market segment index,  it will segregate or put into escrow with its
custodian,  or pledge to a broker as  collateral  for the  option,  at least ten
"qualified  securities,"  which are  securities of an issuer in such industry or
market  segment,  with a market  value at the time the  option is written of not
less than 100% of the current index value times the multiplier  times the number
of contracts.  A "qualified security" is an equity security which is listed on a
national securities exchange or listed on the National Association of Securities
Dealers  Automated  Quotation  System against which the Small-Cap Series has not
written a stock  call  option  and which  has not been  hedged by the  Small-Cap
Series by the sale of stock index futures.  Such  securities will include stocks
which  represent at least 50% of the weighing of the industry or market  segment
index and will represent at least 50% of the Small-Cap  Series' holdings in that
industry or market segment.  No individual security will represent more than 25%
of the amount so segregated, pledged or escrowed. If at the close of business on
any day the market value of such qualified securities so segregated, escrowed or
pledged falls below 100% of the current index value times the  multiplier  times
the number of  contracts,  the  Small-Cap  Series will so  segregate,  escrow or
pledge  an  amount  in  cash,  Treasury  bills or  other  high-grade  short-term
obligations  equal in value to the difference.  In addition,  when the Small-Cap
Series writes a call on an index which is  in-the-money  at the time the call is
written, the Small-Cap Series will segregate with its custodian or pledge to the
broker as collateral cash, equity securities,  non-investment  grade debt, short
term U.S. Government  securities or other high-grade short-term debt obligations
equal in value  to the  amount  by which  the  call is  in-the-money  times  the
multiplier times the number of contracts.  Any amount segregated pursuant to the
foregoing  sentence  may be  applied  to the  Small-Cap  Series'  obligation  to
segregate additional amounts in the event that the market value of the qualified
securities  falls  below 100% of the current  index  value times the  multiplier
times the number of contracts.  However, if the Small-Cap Series holds a call on
the same index as the call written where the exercise  price of the call held is

7
<PAGE>

equal to or less than the exercise price of the call written or greater than the
exercise  price of the call  written  if the  difference  is  maintained  by the
Small-Cap Series in cash, equity securities, non-investment grade debt, treasury
bills or other high-grade  short-term  obligations in a segregated  account with
its  custodian,  it will not be subject  to the  requirements  describe  in this
paragraph.  In instances involving the purchase of stock index futures contracts
by the Small-Cap Series, an amount of cash or permitted  securities equal to the
market value of the futures contracts will be deposited in a segregated  account
with its custodian and/or in a margin account with a broker to collateralize the
position and thereby insure that the use of such futures are unleveraged.

Under regulations of the Commodity Exchange Act, investment companies registered
under the Act are exempt  from the  definition  of  "commodity  pool  operator,"
provided all of the Small-Cap  Series'  commodity  futures or commodity  options
transactions constitute bona fide hedging transactions within the meaning of the
CFTC's  regulations.  The  Small-Cap  Series  will use stock  index  futures and
options  on  futures  as  described  herein  in a manner  consistent  with  this
requirement.

Stock Index Futures.  The Small-Cap  Series will engage in transactions in stock
index  futures  contracts  as a hedge  against  changes  resulting  from  market
conditions in the values of securities  which are held in the Small-Cap  Series'
portfolio or which it intends to purchase.  The Small-Cap  Series will engage in
such  transactions  when they are economically  appropriate for the reduction of
risks inherent in the ongoing  management of the Small-Cap Series. The Small-Cap
Series may not purchase or sell stock index futures if, immediately  thereafter,
more than  one-third of its net assets would be hedged and, in addition,  except
as  described  above in the case of a call  written  and held on the same index,
will write call  options on  indices  or sell stock  index  futures  only if the
amount resulting from the  multiplication of the then current level of the index
(or  indices)  upon  which  the  option  or future  contract(s)  is  based,  the
applicable  multiplier(s),  and the number of futures or options contracts which
would be outstanding,  would not exceed  one-third of the value of the Small-Cap
Series' net assets.

Risks of Transactions in Stock Options.  Writing options  involves the risk that
there  will be no market in which to  effect a  closing  transaction.  An option
position may be closed out only on an exchange which provides a secondary market
for an option of the same series.  Although the Small-Cap  Series will generally
write only  those  options  for which  there  appears to be an active  secondary
market, there is no assurance that a liquid secondary market on an exchange will
exist for any particular option, or at any particular time, and for some options
no secondary  market on an exchange may exist.  If the  Small-Cap  Series,  as a
covered call option writer,  is unable to effect a closing purchase  transaction
in a secondary market, it will not be able to sell the underlying security until
the option expires or it delivers the underlying security upon exercise.

Risks of Options on Indices.  The Small-Cap Series' purchase and sale of options
on indices will be subject to risks  described above under "Risk of Transactions
in Stock Options." In addition,  the distinctive  characteristics  of options on
indices create certain risks that are not present with stock options.

Because the value of an index option  depends upon movements in the level of the
index rather than the price of a particular stock,  whether the Small-Cap Series
will  realize  a gain or loss on the  purchase  or sale of an option on an index
depends  upon  movements  in the  level  of stock  prices  in the  stock  market
generally or in an industry or market segment rather than movements in the price
of a particular  stock.  Accordingly,  successful use by the Small-Cap Series of
options on  indices  would be subject  to the  investment  adviser's  ability to
predict correctly movements in the direction of the stock market generally or of
a particular  industry.  This  requires  different  skills and  techniques  than
predicting changes in the price of individual stocks.

Index prices may be distorted if trading of certain stocks included in the index
is  interrupted.  Trading in the index option also may be interrupted in certain
circumstances,  such as if trading were halted in a substantial number of stocks
included in the index. If this occurred,  the Small-Cap Series would not be able
to close out options which it had purchased or written and, if  restrictions  on
exercise were imposed, may be unable to exercise an option it holds, which could
result  in  substantial  losses to the  Small-Cap  Series.  It is the  Small-Cap
Series'  policy to purchase or write  options  only on indices  which  include a
number of stocks  sufficient to minimize the likelihood of a trading halt in the
index.

8
<PAGE>

Trading  in index  options  commenced  in  April  1983  with the S&P 100  option
(formerly  called the CBOE 100).  Since that time a number of  additional  index
option  contracts have been introduced  including  options on industry  indices.
Although the markets for certain index option contracts have developed  rapidly,
the markets for other index options are still relatively  illiquid.  The ability
to  establish  and close out  positions  on such  options will be subject to the
development and maintenance of a liquid secondary market. It is not certain that
this market will develop in all index option  contracts.  The  Small-Cap  Series
will not purchase or sell any index option  contract  unless and until,  in Fund
management's  opinion,  the market for such options has  developed  sufficiently
that such risk in connection with such transactions in no greater than such risk
in connection with options on stocks.

Special  Risks of Writing Calls on Indices.  Because  exercises of index options
are settled in cash, a call writer cannot determine the amount of its settlement
obligations  in advance  and,  unlike call  writing on specific  stocks,  cannot
provide in advance  for,  or cover,  its  potential  settlement  obligations  by
acquiring and holding the underlying  securities.  However, the Small-Cap Series
will write call options on indices only under the circumstances  described above
under "Limitations on the Purchases and Sales of Stock Options, Options on Stock
Indices and Stock Index Futures."

Price movements in the Small-Cap Series'  portfolio  probably will not correlate
precisely  with movements in the level of the index and,  therefore,  the Series
bears the risk that the price of the securities held may not increase as much as
the index.  In such  event the  Small-Cap  Series  would bear a loss on the call
which is not  completely  offset  by  movements  in the  price of the  Small-Cap
Series'  portfolio.  It is also  possible  that  the  index  may  rise  when the
Small-Cap  Series'  portfolio  of stocks does not rise.  If this  occurred,  the
Small-Cap  Series would  experience a loss on the call which is not offset by an
increase in the value of its portfolio  and might also  experience a loss in its
portfolio.  However,  because the value of a diversified  portfolio  will,  over
time,  tend to move in the same direction as the market,  movements in the value
of the Small-Cap Series in the opposite  direction to the market would be likely
to occur for only a short period or to a small degree.

Unless the  Small-Cap  Series has other  liquid  assets that are  sufficient  to
satisfy  the  exercise  of a call,  the  Small-Cap  Series  would be required to
liquidate  portfolio  securities  in order to satisfy the  exercise.  Because an
exercise must be settled within hours after receiving the notice of exercise, if
the Small-Cap Series fails to anticipate an exercise,  it may have to borrow (in
amounts not exceeding 20% of the Series' total assets) pending settlement of the
sale of securities in its portfolio and would incur interest charges thereon.

When the  Small-Cap  Series  has  written a call,  there is also a risk that the
market  may  decline  between  the  time the  call is  written  and the time the
Small-Cap Series is able to sell stocks in its portfolio. As with stock options,
the  Small-Cap  Series  will not learn that an index  option has been  exercised
until the day following the exercise date but,  unlike a call on stock where the
Small-Cap  Series  would  be  able  to  deliver  the  underlying  securities  in
settlement,  the Series may have to sell part of its stock portfolio in order to
make  settlement in cash, and the price of such stocks might decline before they
can be sold. This timing risk makes certain  strategies  involving more than one
option  substantially more risky with index options than with stock options. For
example,  even if an index  call  which the  Small-Cap  Series  has  written  is
"covered"  by an index call held by the  Small-Cap  Series  with the same strike
price,  the Small-Cap  Series will bear the risk that the level of the index may
decline  between the close of trading on the date the  exercise  notice is filed
with the clearing corporation and the close of trading on the date the Small-Cap
Series  exercises the call it holds or the time the  Small-Cap  Series sells the
call which in either case would occur no earlier than the day  following the day
the exercise notice was filed.

Special Risks of Purchasing Puts and Calls on Indices.  If the Small-Cap  Series
holds an index option and exercises it before final determination of the closing
index  value  for that day,  it runs the risk  that the level of the  underlying
index may change before closing. If such a change causes the exercised option to
fall out-of-the-money, the Series will be required to pay the difference between
the  closing  index  value  and the  exercise  price of the  option  (times  the
applicable  multiple) to the assigned writer.  Although the Small-Cap Series may
be able to minimize this risk by withholding  exercise  instructions  until just
before the daily cut off time or by selling  rather  than  exercising  an option
when the index  level is close to the  exercise  price it may not be possible to
eliminate this risk entirely  because the cut off times for index options may be
earlier  than  those  fixed  for other  types of  options  and may occur  before
definitive closing index values are announced.

9
<PAGE>

                                       2.
                             Directors and Officers

The  following  directors are partners of Lord,  Abbett & Co.  ("Lord  Abbett"),
General Motors Building,  767 Fifth Avenue, New York, New York 10153-0203.  They
have been  associated with Lord Abbett for over five years and are also officers
and directors/trustees of the twelve other Lord Abbett-sponsored funds. They are
"interested  persons" as defined in the Act, and as such,  may be  considered to
have an indirect  financial  interest in the Rule 12b-1 Plans  described  in the
Prospectus.

Robert S. Dow, age 53, Chairman and President
E. Wayne Nordberg, age 59, Vice President

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

E. Thayer Bigelow
Courtroom Television Network
600 Third Avenue
New York, New York

Chief Executive Officer of Courtroom  Television.  Formerly  President and Chief
Executive Officer of Time Warner Cable Programming, Inc. Prior to that, formerly
President and Chief Operating Officer of Home Box Office, Inc. Age 56.

Stewart S. Dixon
Wildman, Harrold, Allen & Dixon
225 W. Wacker Drive (Suite 2800)
Chicago, Illinois

Partner in the law firm of Wildman, Harrold, Allen & Dixon. Age 67.

John C. Jansing
162 S. Beach Road
Hobe Sound, Florida

Retired. Former Chairman of Independent Election Corporation of America, a proxy
tabulating firm. Age 72.

C. Alan MacDonald
Directorship Inc.
8 Sound Shore Drive
Greenwich, Connecticut

Managing  Director of Directorship  Inc., a consultancy in board  management and
corporate  governance.  Formerly  General Partner of The Marketing  Partnership,
Inc., a full service marketing  consulting firm  (1994-1997).  Prior to that, he
was Chairman and Chief Executive Officer of Lincoln Snacks,  Inc.,  manufacturer
of branded snack foods  (1992-1994).  His career spans 36 years at Stouffers and
Nestle  with 18 of the years as Chief  Executive  Officer.  Currently  serves as
Director of DenAmerica Corp., J. B. Williams Company,  Inc.,  Fountainhead Water
Company and Exigent Diagnostics. Age 64.

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

President and Chief Executive Officer of Rochester Button Company.  Age 69.

10
<PAGE>


Thomas J. Neff
Spencer Stuart U.S.
277 Park Avenue
New York, New York

Chairman of Spencer Stuart U.S., an executive search consulting firm. Age 60.

The second column of the following table sets forth the compensation accrued for
the Fund's outside directors. The third and fourth columns set forth information
with respect to the equity-based benefits accrued for outside directors/trustees
maintained by the Lord Abbett-sponsored  funds. The fourth column sets forth the
total compensation payable by such funds to the outside  directors/trustees.  No
director  of the Fund  associated  with Lord  Abbett  and no officer of the Fund
received any compensation from the Fund for acting as a director or officer.

<TABLE>
<CAPTION>
                                 For the Fiscal Year Ended November 30, 1997

         (1)                        (2)                       (3)                       (4)
<S>                        <C>                       <C>                        <C>
                                                     Pension or                 For Year Ended
                                                     Retirement Benefits        December 31, 1997
                                                     Accrued by the             Total Compensation
                           Aggregate                 Fund and                   Accrued by the Fund and
                           Compensation              Twelve Other Lord          Twelve Other Lord
                           Accrued by                Abbett-sponsored           Abbett-sponsored
NAME OF DIRECTOR           THE FUND(1)               FUNDS(2)                   FUNDS(3)

E. Thayer Bigelow          $ 311                     $17,068                    $ 56,000
Stewart S. Dixon           $ 306                     $32,190                    $ 55,000
John C. Jansing            $ 306                     $45,085(4)                 $ 55,000
C. Alan MacDonald          $ 320                     $30,703                    $ 57,400
Hansel B. Millican, Jr.    $ 307                     $37,747                    $ 55,000
Thomas J. Neff             $ 311                     $19,853                    $ 56,000

<FN>
1.       Outside  directors'  fees,  including  attendance  fees for  board  and
         committee meetings, are allocated among all Lord Abbett-sponsored funds
         based on the net assets of each fund.  A portion of the fees payable by
         the Fund to its outside  directors/trustees  is being  deferred under a
         plan that deems the  deferred  amounts to be  invested in shares of the
         Fund for later distribution to the directors/trustees.

2.       The amounts in Column 3 were accrued by the Lord Abbett-Sponsored Funds
         for the 12 months  ended  October 31,  1997 with  respect to the equity
         based plans  established for  independent  directors in 1996. This plan
         supercedes  a  previously  approved  retirement  plan  for  all  future
         directors.  Current  directors  had the option to convert their accrued
         benefits under the retirement plan. All of the outside directors except
         one made such an election.

3.   This column shows  aggregate  compensation,  including  directors  fees and
     attendance fees for board and committee  meetings,  of a nature referred to
     in footnote one, accrued by the Lord Abbett-sponsored funds during the year
     ended December 31, 1997. The amounts of the aggregate  compensation payable
     by the  Fund as of  November  30,  1997  deemed  invested  in Fund  shares,
     including dividends reinvested and changes in net asset value applicable to
     such deemed  investments,  were:  Mr.  Bigelow,  $334;  Mr. Dixon,  $0; Mr.
     Jansing, $327; Mr. MacDonald,  $0; Mr. Millican,  $331; and Mr. Neff, $334.
     If the amounts deemed invested in Fund shares were added to each director's

11
<PAGE>

     actual  holdings of Fund shares as of November 30, 1997 each would own, the
     following:  Mr. Bigelow, 19 shares; Mr. Dixon, 0 shares; Mr. Jansing,  1420
     shares; Mr. MacDonald, 4,008 shares; Mr. Millican, 19 shares; and Mr. Neff,
     19 shares.

4.       Mr. Jansing chose to continue to receive  benefits under the retirement
         plan which  provides  that  outside  directors  (Trustees)  may receive
         annual  retirement  benefits  for  life  equal to  their  final  annual
         retainer  following  retirement  at or after  age 72 with at least  ten
         years of service.  Thus,  if Mr.  Jansing were to retire and the annual
         retainer  payable by the funds  were the same as it is today,  he would
         receive annual retirement benefits of $50,000.
</FN>
</TABLE>


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, Brown, Carper, Ms. Foster, Messrs. Hilstad,  Morris, Noelke and Walsh are
partners of Lord Abbett;  the others are  employees:  Robert G. Morris,  age 53,
Executive  Vice  President;  Robert P. Fetch,  age 45,  Executive Vice President
(with  Lord  Abbett  since  1995;   formerly  Managing  Director  at  Prudential
Investment  Advisors);  Paul A.  Hilstad,  age 55, Vice  President and Secretary
(with Lord Abbett since 1995; formerly Senior Vice President and General Counsel
of American Capital Management & Research, Inc.); Stephen I. Allen, age 44; Zane
Brown,  age 46, Daniel E. Carper,  age 46; Daria L. Foster,  age 43; Lawrence H.
Kaplan,  age 41 (with Lord Abbett since 1997 - formerly Vice President and Chief
Counsel  of  Salomon  Brothers  Asset  Management  Inc from 1995 to 1997,  prior
thereto Senior Vice  President,  Director and General  Counsel of Kidder Peabody
Asset  Management,  Inc.);  Thomas F. Konop, age 55; Gregory M. Macosko,  age 51
(with Lord Abbett since 1996;  formerly  Portfolio  Manager and Analyst at Royce
Associates);  Robert J.  Noelke,  age 41; A. Edward  Oberhaus,  age 38; Keith F.
O'Connor, age 42; John J. Walsh, age 62, Vice Presidents;  and Donna M. McManus,
age 37,  Treasurer  (with Lord Abbett since 1996,  formerly a Senior  Manager at
Deloitte & Touche LLP).

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  Investment  Company  Act of 1940,  as amended  (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.

As of March 1, 1998 our officers and  directors as a group owned less than 1% of
our outstanding shares.


                                       3.
                     Investment Advisory and Other Services

As described under "Our Management" in the Prospectus, Lord Abbett is the Fund's
investment  manager.  Ten of the  twelve  general  partners  of Lord  Abbett are
officers and/or  trustees of the Fund and are identified as follows:  Stephen I.
Allen, Zane E. Brown, Daniel E. Carper,  Robert S. Dow, Daria L. Foster, Paul A.
Hilstad,  Robert G.  Morris,  Robert J.  Noelke,  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. The other general partners of Lord Abbett
who are neither  officers  nor  trustees  of the Fund are W.  Thomas  Hudson and
Michael McLaughlin.

The services  performed by Lord Abbett are described  under "Our  Management" in
the  Prospectus.  Under the Management  Agreement,  we are obligated to pay Lord
Abbett a monthly fee,  based on average daily net assets for each month,  at the
annual rate of .75 of 1% of each Series'  average daily net assets.  In addition
we are  obligated  to pay all  expenses  not  expressly  assumed by Lord Abbett,
including, without limitation, outside directors' fees and expenses, association
membership  dues,  legal  and  auditing  fees,  taxes,   transfer  and  dividend
disbursing  agent  fees,  shareholder  servicing  costs,  expenses  relating  to
shareholder  meetings,  expenses  of  preparing,   printing  and  mailing  stock
certificates and shareholder  reports,  expenses of registering our shares under
federal and state securities laws,  expenses of preparing,  printing and mailing
prospectuses to existing shareholders,  insurance premiums,  brokerage and other
expenses connected with executing portfolio  transactions.  For the fiscal years
ended November 30, 1995 and 1994, although not obligated to, Lord Abbett assumed
the  above-mentioned  expenses of the Large-Cap Series, in the amount of $18,000
for each year.

12
<PAGE>

Although not obligated to do so, Lord Abbett waived all of its  management  fees
with respect to the  Large-Cap  Series for the fiscal  years ended  November 30,
1995 and a portion of its fee for the fiscal year ended 1996. Absent such waiver
the management  fees for the fiscal years ended November 30, 1995 and 1996 would
have been $50,255 and $78,668 respectively.  For the fiscal years ended November
30, 1996 and 1997 Lord Abbett  received  $38,364 and  $334,394  respectively  in
management fees with respect to the Large-Cap Series.

For the period  December 13, 1995  (commencement  of operations) to November 30,
1996,  Lord  Abbett  waived  $24,461  in  management  fees with  respect  to the
Small-Cap  Series.  For the  same  time  period,  Lord  Abbett  did not  receive
management fees with respect to the Small-Cap Series.  For the fiscal year ended
November 30, 1997,  Lord Abbett  received  $1,075,019  in  management  fees with
respect to Small-Cap Series.

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
the Fund's 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.

The Bank of New York ("BNY"),  48 Wall Street,  New York, New York 10268, 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 BNY or its  foreign  branches  to be held by certain  qualified  foreign
banks and depositories.


                                       4.
                             Portfolio Transactions

Our policy is to obtain best execution on all our portfolio transactions,  which
means that we seek 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 and taking into account
the full range and quality of the brokers'  services.  Consistent with obtaining
best execution,  we generally pay, as described below, a higher  commission than
some brokers might charge on the same  transactions.  Our policy with respect to
best  execution  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.

Broker-dealers  are selected on the basis of their  professional  capability and
the value and quality of their brokerage and research  services.  Normally,  the
selection is made by traders who are officers of the Fund and also are employees
of Lord  Abbett.  These  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  obtaining  best
execution.

We pay a  commission  rate  that we  believe  is  appropriate  to  give  maximum
assurance that our brokers will provide us, on a continuing  basis,  the highest
level of brokerage  services  available.  While we do not always seek the lowest
possible  commissions on particular trades, we believe that our commission rates
are in line with the rates that many other  institutions  pay.  Our  traders are
authorized  to pay brokerage  commissions  in excess of those that other brokers
might  accept  on the  same  transactions  in  recognition  of the  value of the
services  performed  by the  executing  brokers,  viewed in terms of either  the
particular  transaction  or the  overall  responsibilities  of Lord  Abbett with
respect to us and the other accounts they manage.  Such services include showing
us trading  opportunities  including  blocks,  a 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
and reliability.

Some of these brokers also provide research  services at least some of which are
useful to Lord Abbett in their overall  responsibilities  with respect to us and
the other accounts they manage. Research includes the furnishing of analyses and
reports concerning issuers, industries, securities, economic factors and trends,
portfolio  strategy and the  performance  of accounts and trading  equipment and
computer software  packages,  acquired from third-party  suppliers,  that enable
Lord Abbett to access various  information  bases.  Such services may be used by
Lord Abbett in servicing all their  accounts,  and not all of such services will

13
<PAGE>

necessarily  be used by Lord Abbett in connection  with their  management of the
Fund; conversely,  such services furnished in connection with brokerage on other
accounts  managed by Lord Abbett may be used in connection with their management
of the  Fund,  and not all of such  services  will  necessarily  be used by Lord
Abbett in connection  with their advisory  services to such other  accounts.  We
have been advised by Lord Abbett that  research  services  received from brokers
cannot be allocated to any  particular  account,  are not a substitute  for Lord
Abbett's  services but are  supplemental  to their own research effort and, when
utilized,  are subject to internal  analysis  before being  incorporated by Lord
Abbett into their investment  process.  As a practical  matter,  it would not be
possible for Lord Abbett to generate all of the information  presently  provided
by brokers.  While  receipt of research  services from  brokerage  firms has not
reduced Lord Abbett's  normal research  activities,  the expenses of Lord Abbett
could be  materially  increased  if it  attempted  to generate  such  additional
information  through its own staff and  purchased  such  equipment  and software
packages directly from the suppliers.

No commitments  are made  regarding the  allocation of brokerage  business to or
among brokers, and trades are executed only when they are dictated by investment
decisions of the Fund to purchase or sell portfolio securities.

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.

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.  Other  clients  who direct  that their  brokerage
business be placed with  specific  brokers or who invest  through wrap  accounts
introduced to Lord Abbett by certain brokers may not participate  with us in the
buying and selling of the same  securities as described  above. If these clients
wish to buy or sell the same security as we do, they may have their transactions
executed at times different from our  transactions  and thus may not receive the
same price or incur the same commission cost as we do.

We will not seek  "reciprocal"  dealer  business  (for the  purpose of  applying
commissions  in whole or in part for our benefit or  otherwise)  from dealers as
consideration for the direction to them of portfolio business.

For the  fiscal  years  ended  November  30,  1995,  1996 and 1997 we paid total
commissions to independent broker-dealers of $7,832, $28,649 and $88,234 for the
Large-Cap Series,  respectively.  For the period December 13, 1995 (commencement
of  operations) to November 30, 1996 and fiscal year ended November 30, 1997, we
paid total  commissions to independent  broker-dealers of $45,266 and $1,812,425
for the Small-Cap Series.


                                       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 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, Martin Luther King, Jr. 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. 

14
<PAGE>

Securities  for which market  quotations  are not  available  are valued at fair
market value under procedures approved by the Board of Directors.

The net asset value per share for the Class B and C shares will be determined in
the same  manner  as for the  Class A  shares  (net  assets  divided  by  shares
outstanding).

The maximum offering price of Class A shares of the Large-Cap Series on November
30, 1997 was computed as follows:

Net asset value per share (net assets divided
by shares outstanding) . . . . . . . . . . . . . . . . . . . . . . . . . .$20.08

Maximum offering price per share (net asset
value divided by .9425) . . . . . . . . . . . . . . . .  . . . . . . . . .$21.31


The maximum offering price of Class A shares of the Small-Cap Series on November
30, 1997 was computed as follows:

Net asset value per share (net assets divided
by shares outstanding). . . . . . . . . . . . . . . . . . . . . . . . . . $16.56

Maximum offering price per share (net asset
value divided by .9425) ). . . . . . . . . . . . . . . . . . . . . . . .. $17.57

Our Class B and C shares will be offered at net asset value.

The Fund has entered into a distribution  agreement with Lord Abbett Distributor
LLC, a New York  limited  liability  company  ("Lord  Abbett  Distributor")  and
subsidiary  of Lord Abbett under which Lord Abbett  Distributor  is obligated to
use its best efforts to find  purchasers for the shares of the Fund, and to make
reasonable efforts to sell Fund shares so long as, in Lord Abbett  Distributor's
judgment, a substantial distribution can be obtained by reasonable efforts.

For  the  last  three  fiscal  years  Lord  Abbett,   as  the  Fund's  principal
underwriter,  received net commissions after allowance of a portion of the sales
charge to independent dealers with respect to Class A shares as follows:

Large-Cap Series
                                   Year Ended November 30,
                                    1997             1996
                                    ----             ----

Gross sales charge                 $1,005,548        $270,755
Amount allowed to dealers          $  864,739        $234,486
                                   ----------        --------

Net commissions
received by
Lord Abbett                        $ 140,809         $ 36,269
                                    ========          =======



15
<PAGE>


Small-Cap Series
                                                  Period December 13, 1995
                              Year Ended          (commencement of operations)
                              November 30, 1997   to November 30, 1996

Gross sales charge            $7,021,169             $46,090
Amount allowed to dealers     $6,026,914             $39,745
                              ----------             -------

Net commissions
received by
Lord Abbett                   $  994,255              $6,345
                              ==========              ======

Conversion  of Class B Shares.  The  conversion  of Class B shares on the eighth
anniversary  of their purchase is subject to the  continuing  availability  of a
private  letter  ruling  from the  Internal  Revenue  Service,  or an opinion of
counsel or tax adviser, to the effect that the conversion of Class B shares does
not  constitute a taxable event for the holder under Federal  income tax law. If
such  a  revenue  ruling  or  opinion  is no  longer  available,  the  automatic
conversion  feature may be suspended,  in which event no further  conversions of
Class B shares would occur while such  suspension  remained in effect.  Although
Class B shares  could  then be  exchanged  for  Class A shares  on the  basis of
relative net asset value of the two classes,  without the  imposition of a sales
charge or fee, such exchange could constitute a taxable event for the holder.

ALTERNATIVE SALES ARRANGEMENTS

Classes of Shares.  The Fund offers investors five different  classes of shares.
This Prospectus  offers four of those classes  designated  Class A, B and C. The
different  classes of shares  represent  investments  in the same  portfolio  of
securities but are subject to different  expenses and will likely have different
share prices.  Investors  should read this section  carefully to determine which
class represents the best investment option for their particular situation.

Class A Shares.  If you buy Class A shares,  you pay an initial  sales charge on
investments  of less than $1 million (or on investments  for  employer-sponsored
retirement  plans under the Internal  Revenue Code  (hereinafter  referred to as
"Retirement Plans") with less than 100 eligible employees or on investments that
do not  qualify to be under a "special  retirement  wrap  program"  as a program
sponsored  by an  authorized  institution  showing  one or more  characteristics
distinguishing  it, in the opinion of Lord Abbett Distributor from a mutual fund
wrap fee program). If you purchase Class A shares as part of an investment of at
least $1 million (or for Retirement  Plans with at least 100 eligible  employees
or under a  special  retirement  wrap  program)  in  shares  of one or more Lord
Abbett-sponsored  funds,  you will not pay an initial sales  charge,  but if you
redeem  any of those  shares  within 24 months  after the month in which you buy
them, you may pay to the Fund a contingent  deferred sales charge ("CDSC") of 1%
except for redemptions under a special  retirement wrap program.  Class A shares
of the Large-Cap  Series are subject to service and  distribution  fees that are
currently estimated to total annually  approximately .23 of 1% of the annual net
asset value of the Class A shares.  Class A shares of the  Small-Cap  Series are
subject to service and distribution  fees that are currently  estimated to total
annually  approximately  .31 of 1% of the annual net asset  value of the Class A
shares.  The  initial  sales  charge  rates,  the CDSC and the Rule  12b-1  plan
applicable to the Class A shares are described in "Buying Class A Shares" below.

Class B Shares.  If you buy Class B shares,  you pay no sales charge at the time
of  purchase,  but if you redeem your  shares  before the sixth  anniversary  of
buying them, you will normally pay a CDSC to Lord Abbett  Distributor LLC ("Lord
Abbett  Distributor").  That CDSC varies  depending  on how long you own shares.
Class B shares are subject to service and distribution fees at an annual rate of
1% of the  annual net asset  value of the Class B shares.  The CDSC and the Rule
12b-1 plan  applicable  to the Class B shares are  described in "Buying  Class B
Shares" below.

Class C Shares.  If you buy Class C shares,  you pay no sales charge at the time
of  purchase,  but if you redeem your  shares  before the first  anniversary  of
buying  them,  you will  normally  pay the Fund a CDSC of 1%. Class C shares are
subject to service and  distribution  fees at an annual rate of 1% of the annual
net  asset  value of the  Class C  shares.  The CDSC  and the  Rule  12b-1  plan
applicable to the C shares are described in "Buying Class C Shares" below.

16
<PAGE>

Which  Class of Shares  Should You  Choose?  Once you decide that the Fund is an
appropriate  investment  for you,  the  decision  as to which class of shares is
better  suited to your needs  depends  on a number of  factors  which you should
discuss with your financial adviser. The Fund's class-specific  expenses and the
effect of the different  types of sales charges on your  investment  will affect
your investment  results over time. The most important  factors are how much you
plan to invest and how long you plan to hold your investment.  If your goals and
objectives  change over time and you plan to  purchase  additional  shares,  you
should  re-evaluate those factors to see if you should consider another class of
shares.

In the following discussion, to help provide you and your financial adviser with
a framework in which to choose a class,  we have made some  assumptions  using a
hypothetical  investment  in the Fund. We used the sales charge rates that apply
to Class  A,  Class B and  Class C, and  considered  the  effect  of the  higher
distribution  fees on Class B and  Class C  expenses  (which  will  affect  your
investment  return). Of course, the actual performance of your investment cannot
be predicted and will vary, based on the Fund's actual investment  returns,  the
operating  expenses  borne by each class of shares,  and the class of shares you
purchase.  The factors briefly discussed below are not intended to be investment
advice,  guidelines  or  recommendations,   because  each  investor's  financial
considerations are different. The discussion below of the factors to consider in
purchasing a particular  class of shares assumes that you will purchase only one
class of shares and not a combination of shares of different classes.

How Long Do You Expect to Hold Your  Investment?  While future  financial  needs
cannot be  predicted  with  certainty,  knowing how long you expect to hold your
investment  will assist you in selecting the  appropriate  class of shares.  For
example,  over time, the reduced sales charges available for larger purchases of
Class A shares may offset the effect of paying an initial  sales  charge on your
investment,  compared to the effect over time of higher class-specific  expenses
on Class B or Class C shares for which no initial sales charge is paid.  Because
of the effect of  class-based  expenses,  your choice  should also depend on how
much you plan to invest.

Investing for the Short Term. If you have a short-term  investment horizon (that
is,  you plan to hold your  shares  for not more  than six  years),  you  should
probably  consider  purchasing  Class A or Class C shares  rather  than  Class B
shares.  This is because of the effect of the Class B CDSC if you redeem  before
the sixth  anniversary  of your  purchase,  as well as the effect of the Class B
distribution  fee on the  investment  return for that  class in the short  term.
Class C shares might be the  appropriate  choice  (especially for investments of
less than $100,000), because there is no initial sales charge on Class C shares,
and the CDSC does not apply to amounts you redeem after holding them one year.

However,  if you plan to invest more than $100,000 for the short term,  then the
more you invest and the more your investment horizon increases toward six years,
the more  attractive  the Class A share  option may become.  This is because the
annual  distribution  fee on Class C shares  will have a greater  impact on your
account over the longer term than the reduced  front-end sales charge  available
for  larger  purchases  of Class A shares.  For  example,  Class A might be more
appropriate  than Class C for  investments of more than $100,000  expected to be
held for 5 or 6 years (or more).  For investments  over $250,000  expected to be
held 4 to 6 years (or more),  Class A shares may become  more  appropriate  than
Class  C. If you are  investing  $500,000  or  more,  Class  A may  become  more
desirable as your investment horizon approaches 3 years or more.

For most investors who invest $1 million or more or for Retirement Plans with at
least 100 eligible employees or for investments pursuant to a special retirement
wrap program, in most cases Class A shares will be the most advantageous choice,
no matter how long you intend to hold your shares.  For that reason,  it may not
be suitable for you to place a purchase  order for Class B shares of $500,000 or
more or a purchase  order for Class C shares of $1,000,000 or more. In addition,
it may not be  suitable  for you to place an order for Class B or C shares for a
Retirement Plan with at least 100 eligible employees or for a special retirement
wrap program. You should discuss this with your financial advisor.

Investing  for the Longer Term.  If you are  investing  for the longer term (for
example,  to provide  for future  college  expenses  for your  child) and do not

17
<PAGE>

expect to need access to your money for seven years or more,  Class B shares may
be an appropriate  investment  option, if you plan to invest less than $100,000.
If you plan to invest more than $100,000 over the long term, Class A shares will
likely be more  advantageous than Class B shares or Class C shares, as discussed
above,  because of the effect of the expected  lower expenses for Class A shares
and the reduced initial sales charges available for larger  investments in Class
A shares under the Fund's Rights of Accumulation.  Of course, these examples are
based on approximations of the effect of current sales charges and expenses on a
hypothetical  investment  over  time,  and  should  not be  relied  on as  rigid
guidelines.

Are There  Differences  in Account  Features  That Matter to You?  Some  account
features  are  available  in whole or in part to  Class A,  Class B and  Class C
shareholders.  Other features (such as Systematic Withdrawal Plans) might not be
advisable in non-Retirement  Plan accounts for Class B shareholders  (because of
the effect of the CDSC on the entire  amount of a  withdrawal  if it exceeds 12%
annually) and in any account for Class C  shareholders  during the first year of
share  ownership  (due  to the  CDSC  on  withdrawals  during  that  year).  See
"Systematic  Withdrawal Plan" under "Shareholder Services" in the Prospectus for
more  information  about the 12% annual waiver of the CDSC. You should carefully
review how you plan to use your  investment  account before deciding which class
of shares you buy. For  example,  the  dividends  payable to Class B and Class C
shareholders  will be  reduced  by the  expenses  borne  solely by each of these
classes, such as the higher distribution fee to which Class B and Class C shares
are subject, as described below.

How Does It Affect Payments to My Broker?  A salesperson,  such as a broker,  or
any other person who is entitled to receive compensation for selling Fund shares
may  receive  different  compensation  for  selling  one class than for  selling
another class. As discussed in more detail below, such compensation is primarily
paid at the time of sale in the case of  Class A and B shares  and is paid  over
time, so long as shares remain outstanding, in the case of Class C shares. It is
important that investors understand that the primary purpose of the CDSC for the
Class B shares  and the  distribution  fee for Class B and Class C shares is the
same as the purpose of the front-end sales charge on sales of Class A shares: to
compensate  brokers and other persons selling such shares. The CDSC, if payable,
supplements  the Class B  distribution  fee and reduces the Class C distribution
fee expenses for the Fund and Class C shareholders.

Class A, B and C Rule 12b-1 Plans. As described in the Prospectus,  the Fund has
adopted  on  behalf  of each  class  of each  Series,  a  Distribution  Plan and
Agreement  pursuant to Rule 12b-1 of the Act:  the "A Plans",  the "B Plans" and
the "C  Plans",  respectively.  In  adopting  each  Plan  and in  approving  its
continuance,  the Board of Directors  has  concluded  that there is a reasonable
likelihood  that each Plan will  benefit  its  respective  Class and such Class'
shareholders.  The expected benefits include greater sales and lower redemptions
of Class  shares,  which should  allow each Class to maintain a consistent  cash
flow, and a higher quality of service to shareholders by authorized institutions
than would  otherwise be the case. The C Plan went into effect on April 1, 1997.
Lord Abbett used all amounts  received under each A Plan for payments to dealers
for (i)  providing  continuous  services  to the Class A  shareholders,  such as
answering shareholder inquiries, maintaining records, and assisting shareholders
in making redemptions,  transfers,  additional  purchases and exchanges and (ii)
their assistance in distributing Class A shares of each Series.

The fees  payable  under  the A Plan,  B Plan and C Plan  are  described  in the
Prospectus.  For the fiscal  year ended  November  30, 1997 fees paid to dealers
under the A Plans for the  Large-Cap  Series were $73,684 and for the  Small-Cap
Series were $236,338.

For the fiscal year ended  November  30,  1997 fees paid to dealers  under the B
Plans for the Large-Cap  Series were $133,177 and for the Small-Cap  Series were
$594,944.

For the fiscal year ended  November  30,  1997 fees paid to dealers  under the C
Plans for the  Large-Cap  Series were $4,548 and for the  Small-Cap  Series were
$111,432.

Each Plan  requires  the  directors  to review,  on a quarterly  basis,  written
reports of all amounts expended  pursuant to the Plan and the purposes for which
such  expenditures  were made.  Each Plan shall  continue  in effect only if its
continuance is specifically approved at least annually by vote of the directors,
including a majority of the directors who are not interested persons of the Fund
and who have no direct or indirect  financial  interest in the  operation of the
Plan or in any  agreements  related to the Plan ("outside  directors"),  cast in
person at a meeting called for the purpose of voting on the Plan. No Plan may be
amended to  increase  materially  above the limits set forth  therein the amount

18
<PAGE>

spent for distribution expenses thereunder without approval by a majority of the
outstanding  voting  securities  of the  applicable  Class and the approval of a
majority of the directors,  including a majority of the outside directors.  Each
Plan  may be  terminated  at any  time  by  vote of a  majority  of the  outside
directors or by vote of a majority of its Class's outstanding voting securities.

Contingent  Deferred Sales Charges. A Contingent  Deferred Sales Charge ("CDSC")
(i) applies  regardless of class, (ii) will not apply to shares purchased by the
reinvestment of dividends or capital gains distributions; (iii) will be assessed
on the lesser of the net asset value of the shares at the time of  redemption or
the original  purchase  price and (iv) will not be imposed on (a) the  aggregate
dollar  amount  of your  account,  in the  case of Class A  shares,  and (b) the
percentage  of  each  share  redeemed,  in the  case of  class  B and C  shares,
representing  an increase in net asset  value over the  initial  purchase  price
(including  increases  due to the  reinvestment  of dividends  and capital gains
distributions).

Class A Shares.  As  stated  in the  Prospectus,  a CDSC of 1% is  imposed  with
respect  to  those   Class  A  shares  (or  Class  A  shares  of  another   Lord
Abbett-sponsored  fund or series  acquired  through  exchange of such shares) on
which the Fund has paid the one-time  distribution  fee of 1% if such shares are
redeemed out of the Lord Abbett-sponsored  family of funds within a period of 24
months from the end of the month in which the original sale occurred.

Class B  Shares.  As  stated in the  Prospectus,  if Class B shares  (or Class B
shares of another Lord Abbett-sponsored fund or series acquired through exchange
of such shares) are redeemed  out of the Lord  Abbett-sponsored  family of funds
for cash before the sixth anniversary of their purchase, a CDSC will be deducted
from  the  redemption  proceeds.  The  Class  B CDSC  is  paid  to  Lord  Abbett
Distributor  to  reimburse  its  expenses,  in whole or in part,  for  providing
distribution-related  service to the Fund in connection with the sale of Class B
shares.

To determine  whether the CDSC applies to a redemption,  the Fund redeems shares
in the following  order:  (1) shares  acquired by  reinvestment of dividends and
capital gains  distributions,  (2) shares held on or after the sixth anniversary
of  their  purchase,   and  (3)  shares  held  the  longest  before  such  sixth
anniversary.

The amount of the contingent  deferred sales charge will depend on the number of
years since you invested and the dollar amount being redeemed,  according to the
following schedule:

Anniversary of the Day on               Contingent Deferred Sales Charge
Which the Purchase Order Was            on Redemptions 
Accepted                                (As % of Amount Subject to Charge)
Before the 1st. . . . . . . . . . . . . . . . . . . . . . . . . . . .  5.0%
On the 1st, before the 2nd. . . . . . . . . . . . . . . . . . . . . .  4.0%
On the 2nd, before the 3rd . . . . . . . . . . . . . . . . . . . .     3.0%
On the 3rd, before the 4th. . . . . . . . . . . . . . . . . . . . .    3.0%
On the 4th, before the 5th. . . . . . . . . . . . . . . . . . . . .    2.0%
On the 5th, before the 6th. . . . . . . . . . . . . . . . . . . . .    1.0%
On or after the 6th anniversary. . . . . . . . . . . . . . . . .       None

In the table, an  "anniversary" is the 365th day subsequent to the acceptance of
a purchase  order or a prior  anniversary.  All purchases are considered to have
been made on the business day on which the purchase order was accepted.

Class C Shares. As stated in the Prospectus,  if Class C shares are redeemed for
cash before the first anniversary of their purchase,  the redeeming  shareholder
will be  required to pay to the Fund on behalf of Class C shares a CDSC of 1% of
the lower of cost or the then net  asset  value of Class C shares  redeemed.  If
such shares are exchanged  into the same class of another Lord  Abbett-sponsored
fund and  subsequently  redeemed before the first  anniversary of their original
purchase,  the  charge  will be  collected  by the  other  fund on behalf of the
Series' Class C shares.

General.  Each percentage (1% in the case of Class A and C shares and 5% through
1% in the case of Class B shares) used to calculate  CDSC's  described above for
the Class A, Class B and Class C shares is sometimes  hereinafter referred to as
the "Applicable Percentage".

19
<PAGE>

With respect to Class A and Class B shares, no CDSC is payable on redemptions by
participants or beneficiaries from employer-sponsored retirement plans under the
Internal  Revenue  Code  for  benefit  payments  due  to  plan  loans,  hardship
withdrawals,  death,  retirement or  separation  from service and for returns of
excess  contributions  to  retirement  plan  sponsors.  With  respect to Class B
shares,  no CDSC is payable for  redemptions  (i) in connection  with Systematic
Withdrawal  Plan and Div-Move  services as described below under those headings,
(ii) in connection with mandatory  distribution  under 403(b) plans and IRAs and
(iii) in connection  with death of the  shareholder.  In the case of Class A and
Class C shares,  the CDSC is received  by the Fund and is intended to  reimburse
all or a portion  of the  amount  paid by the Fund if the  shares  are  redeemed
before the Fund has had an  opportunity to realize the  anticipated  benefits of
having a  long-term  shareholder  account  in the  Fund.  In the case of Class B
shares,  the CDSC is  received  by Lord  Abbett  Distributor  and is intended to
reimburse  its  expenses of providing  distribution-related  service to the Fund
(including  recoupment of the commission  payments made) in connection  with the
sale of Class B shares before Lord Abbett  Distributor has had an opportunity to
realize its  anticipated  reimbursement  by having such a long-term  shareholder
account subject to the B Plan distribution fee.

The other funds and series which participate in the Telephone Exchange Privilege
(except (a) Lord Abbett U.S.  Government  Securities  Money  Market  Fund,  Inc.
("GSMMF"),  (b)  certain  series of Lord  Abbett  Tax-Free  Income Fund and Lord
Abbett  Tax-Free  Income Trust for which a Rule 12b-1 Plan is not yet in effect,
and (c) any authorized  institution's  affiliated  money market fund  satisfying
Lord  Abbett  Distributor  as to certain  omnibus  account  and other  criteria,
hereinafter  referred  to  as  an  "authorized  money  market  fund"  or  "AMMF"
(collectively,  the "Non-12b-1 Funds")) have instituted a CDSC for each class on
the same terms and conditions.  No CDSC will be charged on an exchange of shares
of the same class between Lord Abbett funds or between such funds and AMMF. Upon
redemption of shares out of the Lord Abbett family of funds or out of AMMF,  the
CDSC  will be  charged  on  behalf  of and  paid:  (i) to the fund in which  the
original purchase  (subject to a CDSC) occurred,  in the case of the Class A and
Class C shares and (ii) to Lord Abbett  Distributor if the original purchase was
subject to a CDSC, in the case of the Class B shares.  Thus, if shares of a Lord
Abbett fund are  exchanged for shares of the same class of another such fund and
the shares of the same class  tendered  ("Exchanged  Shares")  are  subject to a
CDSC,  the CDSC will carry over to the shares of the same class being  acquired,
including GSMMF and AMMF ("Acquired  Shares").  Any CDSC that is carried over to
Acquired  Shares is calculated as if the holder of the Acquired  Shares had held
those shares from the date on which he or she became the holder of the Exchanged
Shares.  Although the Non-12b-1  Funds will not pay a distribution  fee on their
own shares, and will, therefore,  not impose their own CDSC, the Non-12b-1 Funds
will collect the CDSC (a) on behalf of other Lord Abbett  funds,  in the case of
the Class A and Class C shares and (b) on behalf of Lord Abbett Distributor,  in
the case of the Class B shares. Acquired Shares held in GSMMF and AMMF which are
subject to a CDSC will be  credited  with the time such shares are held in GSMMF
but will not be credited with the time such shares are held in AMMF.  Therefore,
if your Acquired Shares held in AMMF qualified for no CDSC or a lower Applicable
Percentage at the time of exchange into AMMF,  that  Applicable  Percentage will
apply to  redemptions  for cash from AMMF,  regardless of the time you have held
Acquired Shares in AMMF.

In no event will the amount of the CDSC exceed the Applicable  Percentage of the
lesser of (i) the net asset value of the shares  redeemed  or (ii) the  original
cost of such  shares (or of the  Exchanged  Shares for which  such  shares  were
acquired).  No CDSC  will be  imposed  when  the  investor  redeems  (i)  shares
representing an aggregate dollar amount of your account,  in the case of Class A
shares, (ii) that percentage of each share redeemed,  in the case of Class B and
C shares, derived from increases in the value of the shares above the total cost
of shares being redeemed due to increases in net asset value,  (iii) shares with
respect to which no Lord  Abbett fund paid a 12b-1 fee and, in the case of Class
B shares, Lord Abbett Distributor paid no sales charge or service fee (including
shares  acquired  through  reinvestment  of dividend  income and  capital  gains
distributions) or (iv) shares which,  together with Exchanged Shares,  have been
held  continuously for 24 months from the end of the month in which the original
sale  occurred  (in the case of Class A  shares);  for six years or more (in the
case  of  Class B  shares)  and for one  year or more  (in the  case of  Class C
shares). In determining whether a CDSC is payable, (a) shares not subject to the
CDSC will be redeemed  before  shares  subject to the CDSC and (b) of the shares
subject to a CDSC, those held the longest will be the first to be redeemed.

Exchanges.  The Prospectus briefly describes the Telephone  Exchange  Privilege.
You may  exchange  some or all of your shares of any class for those in the same
class of: (i) Lord Abbett-sponsored funds currently offered to the public with a

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<PAGE>

sales charge  (front-end,  back-end or level ), (ii) GSMMF or (iii) AMMF, to the
extent  offers  and  sales  may be made in  your  state.  You  should  read  the
prospectus of the other fund before exchanging. In establishing a new account by
exchange,  shares of the Series  being  exchanged  must have a value equal to at
least the minimum initial investment  required for the other fund into which the
exchange is made.

Shareholders in other Lord  Abbett-sponsored  funds and AMMF have the same right
to exchange  their shares for the  corresponding  class of each Series'  shares.
Exchanges  are based on relative  net asset values on the day  instructions  are
received by the Fund in Kansas City if the  instructions  are received  prior to
the close of the NYSE in proper form. No sales charges are imposed except in the
case of  exchanges  out of  GSMMF or AMMF  (unless  a sales  charge  (front-end,
back-end or level) was paid on the initial investment in a Lord Abbett-sponsored
fund).  Exercise of the exchange privilege will be treated as a sale for federal
income tax purposes, and, depending on the circumstances,  a gain or loss may be
recognized. In the case of an exchange of shares that have been held for 90 days
or less where no sales charge is payable on the  exchange,  the  original  sales
charge incurred with respect to the exchanged  shares will be taken into account
in  determining  gain or loss on the  exchange  only to the extent  such  charge
exceeds the sales charge that would have been payable on the acquired shares had
they been acquired for cash rather than by exchange. The portion of the original
sales charge not so taken into  account will  increase the basis of the acquired
shares.

Shareholders have the exchange  privilege unless they refuse it in writing.  You
should  not view the  exchange  privilege  as a means for  taking  advantage  of
short-term swings in the market,  and we reserve the right to terminate or limit
the privilege of any shareholder who makes frequent exchanges.  We can revoke or
modify the privilege for all shareholders upon 60 days' prior notice.  "Eligible
Funds" are AMMF and other Lord Abbett-sponsored funds which are eligible for the
exchange  privilege,  except Lord Abbett Series Fund  ("LASF")  which offers its
shares only in connection with certain variable annuity  contracts,  Lord Abbett
Equity  Fund  ("LAEF")  which is not issuing  shares,  and series of Lord Abbett
Research Fund not offered to the general public ("LARF").

Statement of Intention.  Under the terms of the Statement of Intention to invest
$50,000 or more over a 13-month period as described in the Prospectus, shares of
a Lord  Abbett-sponsored  fund (other than shares of LAEF, LASF, LARF, GSMMF and
AMMF,  unless holdings in GSMMF and AMMF are  attributable  to shares  exchanged
from a Lord  Abbett-sponsored  fund offered with a front-end,  back-end or level
sales charge) currently owned by you are credited as purchases (at their current
offering prices on the date the Statement is signed) toward achieving the stated
investment and reduced  initial sales charge for Class A shares.  Class A shares
valued  at 5% of the  amount  of  intended  purchases  are  escrowed  and may be
redeemed to cover the  additional  sales charge  payable if the Statement is not
completed.  The Statement of Intention is neither a binding obligation on you to
buy, nor on the Fund to sell, the full amount indicated.

Rights of Accumulation.  As stated in the Prospectus,  purchasers (as defined in
the Prospectus) may accumulate their investment in Lord  Abbett-sponsored  funds
(other than LAEF, LARF,  LASF,  GSMMF, and AMMF unless holdings in GSMMF or AMMF
are attributable to shares exchanged from a Lord  Abbett-sponsored  fund offered
with a front-end,  back-end or level sales charge) so that a current investment,
plus the  purchaser's  holdings  valued at the current  maximum  offering price,
reach a level eligible for a discounted sales charge for Class A shares.

Net Asset Value Purchases of Class A Shares.  As stated in the  Prospectus,  our
Class A shares may be purchased at net asset value by our  directors,  employees
of Lord Abbett,  employees of our  shareholder  servicing agent and employees of
any securities  dealer having a sales agreement with Lord Abbett who consents to
such   purchases  or  by  the  director  or  custodian   under  any  pension  or
profit-sharing plan or Payroll Deduction IRA established for the benefit of such
persons  or for the  benefit  of  employees  of any  national  securities  trade
organization  to which Lord Abbett  belongs or any company with an account(s) in
excess of $10  million  managed  by Lord  Abbett  on a  private-advisory-account
basis.  For purposes of this  paragraph,  the terms  "directors" and "employees"
include a trustee's or employee's  spouse  (including the surviving  spouse of a
deceased director or employee). The terms "our directors" and "employees of Lord
Abbett" also include other family members and retired directors and employees.

Our Class A shares also may be purchased at net asset value (a) at $1 million or
more,  (b) with  dividends and  distributions  from Class A shares of other Lord
Abbett-sponsored  funds,  except  for LARF,  LAEF and  LASF,  (c) under the loan
feature of the Lord  Abbett-sponsored  prototype 403(b) plan for share purchases
representing the repayment of principal and interest,  (d) by certain authorized
brokers, dealers, registered investment advisers or other financial institutions
who have entered into an agreement  with Lord Abbett  Distributor  in accordance
with  certain  standards   approved  by  Lord  Abbett   Distributor,   providing
specifically  for the use of our shares in particular  investment  products made

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<PAGE>

available for a fee to clients of such brokers,  dealers,  registered investment
advisers and other financial institutions, ("mutual fund wrap fee program"), (e)
by employees,  partners and owners of  unaffiliated  consultants and advisors to
Lord Abbett, Lord Abbett Distributor or Lord Abbett-sponsored  funds who consent
to such  purchase if such persons  provide  service to Lord Abbett,  Lord Abbett
Distributor  or such  funds on a  continuing  basis and are  familiar  with such
funds, (f) through Retirement Plans with at least 100 eligible employees, (g) in
connection with a merger, acquisition or other reorganization, and (h) through a
"special retirement wrap program" sponsored by an authorized institution showing
one or more  characteristics  distinguishing  it, in the  opinion of Lord Abbett
Distributor from a mutual fund wrap program. Such characteristics include, among
other  things,  the fact that an  authorized  institution  does not  charge  its
clients  any  fee of a  consulting  or  advisory  nature  that  is  economically
equivalent  to the  distribution  fee under Class A 12b-1 Plan and the fact that
the program relates to participant-directed  Retirement Plan. Shares are offered
at net asset value to these investors for the purpose of promoting goodwill with
employees  and  others  with whom Lord  Abbett  Distributor  and/or the Fund has
business relationships.

Redemptions.  A  redemption  order is in proper form when it contains all of the
information and  documentation  required by the order form or  supplementally by
Lord Abbett Distributor or the Fund to carry out the order. The signature(s) and
any legal capacity of the signer(s) must be guaranteed by an eligible guarantor.
See the Prospectus for expedited redemption procedures.

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 6 month's  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.

Div-Move. Under the Div-Move service described in the Prospectus, you can invest
the dividends paid on your account of any class into an existing  account of the
same class in any other  Eligible Fund. The account must be either your account,
a joint account for you and your spouse, a single account for your spouse,  or a
custodial  account for your minor child under the age of 21. You should read the
prospectus of the other fund before investing.

Invest-A-Matic.  The  Invest-A-Matic  method of investing in the Fund and/or any
other  Eligible Fund is described in the  Prospectus.  To avail yourself of this
method you must complete the application form,  selecting the time and amount of
your bank checking account  withdrawals and the funds for investment,  include a
voided, unsigned check and complete the bank authorization.

Systematic  Withdrawal  Plans.  The Systematic  Withdrawal  Plan ("SWP") also is
described  in the  Prospectus.  You may  establish  a SWP if you own or purchase
uncertificated shares having a current offering price value of at least $10,000.
Lord Abbett prototype  retirement plans have no such minimum.  With respect to a
SWP for Class B shares,  the CDSC will be waived for  redemptions of 12% or less
per year and for  redemptions  over 12% per  year,  the CDSC  will  apply to the
entire  redemption.  Therefore,  please  contact  the  Fund  for  assistance  in
minimizing the CDSC in this situation.  With respect to Class C shares, the CDSC
will be waived on and after the first  anniversary  of their  purchase.  The SWP
involves  the  planned  redemption  of shares on a periodic  basis by  receiving
either  fixed or  variable  amounts at  periodic  intervals.  Since the value of
shares  redeemed  may be more or  less  than  their  cost,  gain or loss  may be
recognized for income tax purposes on each periodic payment.  Normally,  you may
not make  regular  investments  at the same  time you are  receiving  systematic
withdrawal  payments because it is not in your interest to pay a sales charge on
new  investments  when in  effect  a  portion  of that  new  investment  is soon
withdrawn.  The minimum investment accepted while a withdrawal plan is in effect
is  $1,000.  The SWP may be  terminated  by you or by us at any time by  written
notice.

Retirement  Plans.  The Prospectus  indicates the types of retirement  plans for
which Lord Abbett provides forms and  explanations.  Lord Abbett makes available

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<PAGE>

the retirement plan forms,  including 401(k) plans and custodial  agreements for
IRAs  (Individual  Retirement  Accounts,  including  Simple IRAs and  Simplified
Employee Pensions), 403(b) plans and qualified pension and profit-sharing plans.
The forms name  Investors  Fiduciary  Trust  Company as  custodian  and  contain
specific   information   about  the  plans.   Explanations  of  the  eligibility
requirements,  annual  custodial fees and allowable tax advantages and penalties
are set forth in the  relevant  plan  documents.  Adoption of any of these plans
should be on the advice of your legal counsel or qualified tax adviser.



                                       6.
                                Past Performance

Each Series computes the average annual compounded rate of total return for each
class 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
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.

In  calculating  total  returns for Class A shares,  the current  maximum  sales
charge of 5.75% (as a  percentage  of the offering  price) is deducted  from the
initial  investment (unless the return is shown at net asset value). For Class B
shares,  the payment of the applicable CDSC (5.0% prior to the first anniversary
of purchase, 4.0% prior to the second anniversary of purchase, 3.0% prior to the
third and fourth anniversaries of purchase,  2.0% prior to the fifth anniversary
of purchase,  1.0% prior to the sixth anniversary of purchase and no CDSC on and
after the sixth  anniversary  of purchase) is applied to the Series'  investment
result for that class for the time  period  shown  (unless  the total  return is
shown at net asset value).  For Class C shares,  the 1.0% CDSC is applied to the
Series'  investment result for that class for the time period shown prior to the
first  anniversary  of purchase  (unless the total  return is shown at net asset
value).  Total  returns  also  assume  that  all  dividends  and  capital  gains
distributions during the period are reinvested at net asset value per share, and
that the  investment  is redeemed at the end of the period.  Total  returns also
assume that all dividends and capital gains distributions  during the period are
reinvested at net asset value per share,  and that the investment is redeemed at
the end of the period.

Using the method to compute  average annual  compounded  total return  described
above, for the Class A shares of the Large-Cap Series for each of the two fiscal
years ending  November 30, 1996 and 1997, and the  life-of-Series  periods (from
commencement of operations on June 3, 1992 through November 30, 1997) assuming a
$1,000  investment at the beginning of the period,  the average  annual rates of
total return were 19.00%,  13.00% and 18.67% and the redeemable  values amounted
to $1,190, $1,130 and $2,561 respectively. With respect to Class A shares of the
Small-Cap  Series  for the  fiscal  year  ended  November  30,  1997 and for the
life-of-Series,  (commencement of operations  December 13, 1995 through November
30, 1997)  assuming a $1,000  investment  at the  beginning  of the period,  the
average  annual  rate of total  return was 30.00% and 29.65% and the  redeemable
value amounted to $1,300 and $1,667 respectively.

Our  yield  quotation  for each  class is  based on a 30-day  period  ended on a
specified date,  computed by dividing the net investment income per share earned
during the period by the maximum  offering  price per share of such class on the
last day of the period.  This is determined  by finding the following  quotient:
take the dividends  and interest  earned during the period for a class minus its
expenses  accrued  for the period and divide by the  product of (i) the  average
daily number of Class shares outstanding during the period that were entitled to
receive dividends and (ii) the maximum offering price per share of such class on
the last day of the period.  To this quotient add one. This sum is multiplied by
itself  five  times.   Then  one  is   subtracted   from  the  product  of  this
multiplication  and the remainder is  multiplied  by two.  Yield for the Class A
shares reflects the deduction of the maximum initial sales charge,  but may also
be shown based on the Class A net asset value per share.  Yields for Class B and
C shares do not reflect the deduction of the CDSC.

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<PAGE>

These figures represent past  performance,  and an investor should be aware that
the investment return and principal value of a Series' 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 each Series or repurchased or otherwise sold
may be  more  or less  than  your  tax  basis  in the  shares  at the  time  the
redemption,  repurchase  or sale is made.  Any gain or loss  will  generally  be
taxable  for  federal  income  tax  purposes.  Any loss  realized  on the  sale,
redemption or repurchase of a Series'  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 the sale, the taxpayer  acquires stock or securities  that are
substantially identical.

Each  Series  will be  subject  to a  four-percent  nondeductible  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. Each
Series  intends to distribute to  shareholders  each year an amount  adequate to
avoid the imposition of such excise tax.

The writing of call options and other investment  techniques and practices which
each Series 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 a Series.  Such  transactions  may increase the amount of short-term  capital
gain realized by each Series, which is taxed as ordinary income when distributed
to shareholders.  Limitations  imposed by the Internal Revenue Code on regulated
investment companies may restrict each Series' ability to engage in transactions
in options.

Certain  futures  contracts and certain  listed options held by a Series will be
required to be "marked to market" for federal income tax purpose,  i.e., treated
as having  been sold at their fair  market  value on the last day of the Series'
taxable year (referred to as Section 1256 Contracts).  sixty percent of any gain
or loss recognized on actual or deemed sales of such Section 1256 Contracts will
be treated as long-term  capital gain or loss, and 40% of such gain or loss will
be treated as  short-term  capital  gain or loss.  The Series may be required to
defer the recognition of losses on securities and options and futures  contracts
to the extent of any recognized gain on offsetting positions held by the Series.

As described in the Prospectus under "How We Invest - Risk Factors," each Series
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  shareholders of each Series
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
each Series.

Gains and losses  realized  by each  Series 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 either Series purchases shares in certain foreign investment entities, called
"passive  foreign  investment  companies,"  it may be subject  to United  States

24
<PAGE>

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

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

Dividends paid by a Series will qualify for the dividends-received deduction for
corporations  to the extent they are  derived  from  dividends  paid by domestic
corporations.

The  foregoing  discussion  relates  solely to U.S.  federal  income  tax law as
applicable to United States  persons  (United  States  citizens or residents and
United States domestic  corporations,  partnerships,  trusts and estates).  Each
shareholder  who is not a United States  person  should  consult his tax advisor
regarding  U.S.  and foreign tax  consequences  of the  ownership of shares of a
Series,  including a 30% (or lower treaty rate) United States withholding tax on
dividends representing ordinary income and net short-term capital gains, and the
applicability  of United States gift and estate taxes to non-United  States gift
and estate taxes to non-United States persons who own Series shares.


                                       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.


                                       9.
                              Financial Statements

The  financial  statements  for the fiscal year ended  November 30, 1997 and the
report  of  Deloitte  & Touche  LLP,  independent  auditors,  on such  financial
statements  contained  in the 1997  Annual  Report to  Shareholders  of the Lord
Abbett  Research  Fund,  Inc.,  are  incorporated  herein by  reference  to such
financial  statements  and report in reliance  upon the  authority of Deloitte &
Touche LLP as experts in auditing and accounting.


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