LORD ABBETT RESEARCH FUND INC
497, 1998-10-13
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LORD ABBETT

Prospectus

October 1, 1998

Application Inside

LORD ABBETT
GROWTH OPPORTUNITIES
FUND

[LOGO](R) LORD, ABBETT & CO
          Investment Management
A Tradition of Performance Through Disciplined Investing

<PAGE>

This Prospectus  sets forth  concisely the information  about Lord Abbett Growth
Opportunities  Fund ("we" or the "Fund") that you should know before  investing.
Please read this Prospectus before investing and retain it for future reference.

   The Fund's investment  objective is capital  appreciation.  In its search for
growth, the Fund seeks companies which are primarily middle-sized,  based on the
value of their  outstanding  stock.  There  can be no  assurance  the Fund  will
achieve its objective.

   The Statement of Additional  Information dated October 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".  In addition,  the  Commission  maintains a website
(http://www.sec.gov)  that  contains the  Statement of  Additional  Information,
material incorporated by reference,  and other information regarding registrants
that file  electronically  with the Commission.  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
GROWTH OPPORTUNITIES
FUND

PROSPECTUS
   October 1, 1998

TABLE OF CONTENTS                                 PAGE
   How We Invest                                    2
   Risk Factors                                     2
   Portfolio Management                             2
   Investor Expenses                                2
   Financial Highlights                             3
   Purchases                                        4
   Opening Your Account                             6
   Shareholder Services                             6
   Redemptions                                      7
   Dividends and Capital Gains                      8
   Our Management                                   8
   Fund Performance                                 8
   Investment Policies, Risks and Limits            9
   Sales and Service Compensation
     and Activities                                12
   Glossary of Terms                               13

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 o 10153
(800) 426-1130

<PAGE>
- --------------------------------------------------------------------------------
HOW WE INVEST

Normally  we invest  primarily  in equity  securities  of  mid-sized  companies,
defined for this purpose as companies whose  outstanding  equity securities have
an  aggregate  market  value of  between  $1 billion  and $6  billion.  We favor
companies  that show the potential for stronger  than average  earnings  growth.
Under  normal  circumstances,  at least 65% of our total  assets will consist of
investments made in growth companies, as 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,  small-sized  companies  and other  securities,  that could
adversely  affect  performance.  Before  you  invest,  please  read  "Investment
Policies, Risks and Limits".

- --------------------------------------------------------------------------------
PORTFOLIO MANAGEMENT

Stephen J. McGruder, Partner of Lord, Abbett & Co. ("Lord Abbett") and Executive
Vice  President of the Fund, has served as Senior  Portfolio  Manager since July
15,  1998.  He joined Lord Abbett in 1995.  Prior to joining  Lord  Abbett,  Mr.
McGruder  served since  October of 1988 as Vice  President of Wafra  Investment
Advisory Group, a private investment  company.  Mr. McGruder is assisted by, and
may delegate  management  duties to, other Lord Abbett employees who may be Fund
officers.

   Mr. McGruder has over 29 years of investment experience.

   When Mr.  McGruder  became  the  Senior  Portfolio  Manager  of the Fund,  he
introduced a growth style of investing to the Fund. Under this method, companies
are favored that show the potential for stronger-than-expected  earnings growth.
As the  opportunities  present  themselves,  these  kinds of  companies  will be
favored in the selection process. Under the former value style of investing used
to manage the Fund,  companies  were selected  without  regard to current income
under a process that sought to identify and invest in undervalued securities.

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

                                        Class A    Class B   Class C

 Shareholder Transaction Expenses
 Maximum Sales Load 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(1) (as a % of average net assets)
 Management Fee (See "Our Management")     0.90%      0.90%     0.90%
 12b-1 Fees(1)                             0.35%     1.00%      1.00%
 Other Expenses (See "Our Management")     0.28%      0.28%     0.28%
 Total Operating Expenses                  1.53%      2.18%     2.18%

(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.  Lord
    Abbett  Distributor LLC has  voluntarily  agreed not to use a portion of the
    12b-1  fee  attributable  to  Class  A  shares  of the  Fund.  Without  such
    limitation  the 12b-1 fee for Class A shares would be payable at the rate of
    0.50% of average daily net assets.

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

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)    $72      $ 98      $136       $235
 Class C shares       $32      $ 68      $117       $252

 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)    $22      $ 68      $117       $235
 Class C shares       $22      $ 68      $117       $252

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

<PAGE>
- --------------------------------------------------------------------------------
FINANCIAL  HIGHLIGHTS  Except for the six-month  period ended May 31, 1998 which
has not been audited,  the following table has been audited by Deloitte & Touche
LLP, independent  auditors,  in connection with their annual audit of the Fund's
Financial Statements, whose report may be obtained on request. Call 800-821-5129
and ask for the Lord Abbett  Growth  Opportunities  Fund's 1997 annual report or
1998 semi-annual report.

<TABLE>
<CAPTION>

 Per Class A Share Operating(a)                        Six Months Ended   Year Ended November 30, For the Period August 1, 1995(d)
 Performance:                                            May 31, 1998      1997             1996           to November 30, 1995

<S>                                                       <C>            <C>               <C>                   <C>   
 Net asset value, beginning of period                     $16.18         $12.84            $10.18                $10.00
 Income from Investment Operations
  Net investment income(b)                                   .08            .23              0.30                   .10
  Net realized and unrealized gain on investments           1.72           3.39              2.50                   .08
 Total from investment operations                           1.80           3.62              2.80                   .18
 Distributions
  Dividends from net investment income                     (.22)           (.28)             (.12)                  --
  Net realized gain from security transactions             (2.06)           --               (.02)                  --
 Net asset value, end of period                           $15.70         $16.18            $12.84                $10.18
 Total Return(c)                                           13.01%(e)      28.90%            27.81%                 1.80%(e)
 Ratios/Supplemental Data:
  Net assets, end of period(000)                           $2,095         $1,672            $1,462                 $968
 Ratios to Average Net Assets:
  Expenses, including waiver                                 .00(e)         .00%              .00%                 0.00%(e)
  Expenses, excluding waiver                                 .69(e)        1.58%             2.39%                 1.20%(e)
  Net investment income                                      .55(e)        1.69%             2.67%                 1.04%(e)
 Portfolio turnover rate                                   33.39%         52.86%            30.78%                 1.55%
  Average commissions per share paid on equity transactions                $.049             $.062                 $.048

<FN>
(a) See Notes to Financial Statements.
(b) Net of management fee waiver and expenses assumed.
(c) Total return does not consider the effects of front-end  sales or contingent
    deferred sales charges. 
(d) Commencement of operations.
(e) Not annualized.
</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 usually  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. O
2.  Purchases by Retirement Plans with at least 100 eligible employees. O
3.  Purchases under a Special Retirement Wrap Program. O
4.  Purchases made with dividends and distributions on Class A shares of another
    Eligible Fund.
5.  Purchases  representing  repayment  under  the  

<PAGE>

    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.
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.

                          O 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.  In  addition,
repayment of loans under  Retirement  Plans and 403(b) plans will constitute new
sales for purposes of assessing the CDSC. 

CLASS A SHARE  CDSC.  If you buy  Class A shares  under one of the  starred  (O)
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
 6th anniversary(2)                    None

(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.  An
exception  is made for shares  redeemed  from a Mutual  Fund  Wrap-Fee  Program.

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.


<PAGE>

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).

- --------------------------------------------------------------------------------
OPENING YOUR ACCOUNT
MINIMUM INITIAL INVESTMENT PER FUND
- --------------------------------------------------------------------------------
o Regular account                                  $1,000
- --------------------------------------------------------------------------------
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  LLC or you can  fill  out the
attached  application  and send it to the Fund at the address stated below.  You
may be charged a fee if you effect transactions through an independent dealer or
agent.  You should read this Prospectus  carefully  before placing your order to
assure your order is in proper form.

LORD ABBETT GROWTH OPPORTUNITIES FUND
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  by  check.  For  more
information  regarding  proper  form  of a  purchase  order,  call  the  Fund at
1-800-821-5129.

Payment must be credited in U.S. dollars to our custodian bank's account.

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 

<PAGE>

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.

INVESTING BY PHONE. Upon completion and receipt of the attached application form
(in  particular,  section 7), you can  instruct  the Fund by phone to have money
transferred  from  your  bank  account  to  purchase  shares  of the Fund for an
existing  account.  The Fund will purchase the requested  shares upon receipt of
the money from your  bank. 

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.

   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.


<PAGE>

   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 annually.  

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 12 months.  (If
the taxpayer is in the 15% tax bracket, the rate is 10%.)

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 69 years and currently manages about $26
billion in a family of mutual  funds and other  advisory  accounts.  Lord Abbett
provides similar services to thirty-six  separate mutual fund portfolios  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 Fund was obligated
to pay Lord Abbett at an annual  rate of .75 of 1%. But Lord  Abbett  waived the
fee and subsidized all the Fund's expenses. For the current fiscal year such fee
and expenses are estimated to be .90 and .63 of 1%, respectively. 

THE FUND.  The Fund is a  diversified  separate  series of Lord Abbett  Research
Fund,  Inc.  (the  "Company"),   an  open-end   management   investment  company
incorporated  in Maryland on April 6, 1992.  The Fund's  former name was Mid-Cap
Series.  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.  The Company currently consists of three series.  Only
shares of the Fund are being offered in this prospectus.

- --------------------------------------------------------------------------------
FUND PERFORMANCE

The Fund  completed  its fiscal year on November 30, 1997.  The Fund's net asset
value was $16.18 per share versus $12.84 one year ago. Over the period, the Fund
produced  a total  return  (the  percent  change  in net  asset  value  with all
distributions reinvested) of 28.9%.

   Over  the past  1997  fiscal  year,  the  stock  market  experienced  several
corrections before rebounding to new heights. This occurred against a background
of  surprising  strength in the economy,  concerns of  inflation  and a volatile
interest-rate  environment.  The positive performance of your Fund over the past
year can be  attributed  to the use of the best  ideas  generated  by 


<PAGE>

the Fund's  research team.  Specifically,  individual  issues in the technology,
finance and consumer sectors proved to be rewarding.

   Your Fund is not sector-weighted (diversified in proportion to an index) and,
as such,  during  the past year  relied  on,  and  continues  to rely on,  stock
selection of companies with solid fundamental prospects in the mid-cap universe.

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

- --------------------------------------------------------------------------------
INVESTMENT POLICIES, RISKS AND LIMITS

The Fund is  permitted to utilize,  within  limits  established  by the Board of
Directors,  the following investment policies in an effort to enhance the Fund's
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 Fund
follows  certain  practices that may reduce these risks.  To the extent the Fund
utilizes some of these  policies,  its overall  performance may be positively or
negatively  affected.  

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 Fund 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 Fund  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 Fund's total
assets.  

OPTIONS TRANSACTIONS:  The Fund 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 Fund as the writer of a put option,  might  therefore be obligated
to purchase underlying securities for more than their current market value.

   When the Fund 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.

   Participation in the options market involves investment risks and transaction
costs to which the Fund would not be subject absent the use of these strategies.
If Fund  management's  prediction of movement in the direction of the securities
markets is inaccurate,  the adverse  consequences  to the Fund may leave it in a
worse position than if such strategies were not used.  Risks inherent in the use
of options 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 indices 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 

<PAGE>

particular  instrument  at any time;  and (5) the possible need to defer closing
out certain hedged positions to avoid adverse tax consequences.

   LIMIT:  The Fund may only write  covered put options to the extent that cover
for such options does not exceed 25% of the Fund's net assets. Provided they are
traded on a national  securities exchange and used to increase the Fund's income
and to provide greater  flexibility in the  disposition of the Fund's  portfolio
securities,  the Fund may write  covered  call options on  securities  having an
aggregate  market  value not to exceed 5% of the Fund's gross  assets.  The Fund
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.

   The Fund will write only "covered" options.  An option is covered if, so long
as the Fund 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. 

FOREIGN  INVESTMENTS:  The Fund 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 the
Fund.

   LIMIT:  Up to 35% of the Fund's net assets (at the time of investment) may be
invested in securities that are primarily traded in foreign  countries.  Forward
Foreign  Currency  Contracts:  The Fund 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 Fund may  enter  into  forward
foreign currency contracts in primarily two circumstances.  First, when the Fund
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  Fund  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 Fund 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 Fund 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 Fund, 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 Fund gives the purchaser,  upon
payment  of a premium,  the right to  purchase  from the Fund a currency  at the
exercise  price until the  expiration  of the option.  The Fund 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 


<PAGE>

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  Fund  and the  counterparty  have  provided  for the  Fund,  at the  Fund's
election,  to unwind the OTC option.  The exercise of such an option  ordinarily
would  involve  the  payment by the Fund of an amount  designed  to reflect  the
counterparty's economic loss from an early termination,  but does allow the Fund
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 Fund.  Unlisted options,  together with other
illiquid securities, may comprise no more than 15% of the Fund's 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  Fund  to  cover  such  call  writing  or (b) to be  crossed.  

REPURCHASE  AGREEMENTS:  The  Fund  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
Fund's money is invested in the security.  The Fund's 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 Fund will require additional collateral.

   RISK:  If the seller  defaults and the value of the  collateral  securing the
repurchase agreement declines, the Fund may incur a loss. 

WHEN-ISSUED  OR DELAYED  DELIVERY  TRANSACTIONS:  Such  transactions  arise when
securities  are  purchased or sold by the Fund 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 Fund at the time of
entering other liquid  high-grade  debt  obligations  having a value equal to or
greater  than the Fund's  purchase  commitments;  the  custodian  will  likewise
designate as segregated those 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 Fund's
assets  committed  to the purchase of  securities  on a  when-issued  or delayed
delivery  basis may  increase  the  volatility  of the Fund's  net asset  value.

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:  The Fund 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 the Fund's  liquidity  during
periods of decreased market interest in such securities.

BORROWING:  The Fund may borrow money.

   RISK:  Depending on the  circumstances,  the interest paid on  borrowed money
may reduce the Fund's return.

   LIMIT:  The Fund may not borrow money in excess of 331/3% of its 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.  The Fund may obtain such short-term credit as
may be  necessary  for  the  clearance  of  purchases  and  sales  of  portfolio
securities. 

RIGHTS AND WARRANTS:  The Fund 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 

<PAGE>

the New York or American Stock Exchanges.

   LIMIT: The Fund has no present intention to commit more  than 5% of its gross
assets to rights and warrants.  

CLOSED-END  INVESTMENT  COMPANIES:  The Fund 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 the Fund and the  closed-end  investment
company both charge a management fee.

   LIMIT:  No more than 5% of  the gross  assets of the Fund 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  Fund's  total
assets.

TEMPORARY  INVESTMENTS:  For temporary  defensive  purposes or to create reserve
purchasing power pending other investments, the Fund 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  portfolio.  

OBJECTIVE,  RESTRICTION  AND  POLICY  CHANGES.  The  Fund  will not  change  its
investment  objective  or  its  fundamental   restrictions  without  shareholder
approval.  If the Fund  determines  that its objective can best be achieved by a
substantive  change  in  investment   policy,   which  may  be  changed  without
shareholder  approval,  the Fund 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 AND SERVICE COMPENSATION
AND ACTIVITIES

SALES  COMPENSATION.  As part of its plan for distributing  shares, the Fund and
Lord  Abbett  Distributor  pay  sales and  service  compensation  to  Authorized
Institutions  that sell the Fund's shares and service its shareholder  accounts.
These  firms  typically  pass  along  a  portion  of this  compensation  to your
financial representative.

   Sales compensation  originates from two sources: sales charges and 12b-1 fees
that are paid out of the Fund's assets.  Service  compensation  originates  from
12b-1 fees.  ("12b-1" refers to the federal  securities  regulation  authorizing
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 sales and service compensation to Authorized  Institutions,  such as
your dealer,  are shown in the chart on the last page of this  Prospectus.  Lord
Abbett Distributor's portion of such sales and service compensation is discussed
under "Sales  Activities" and "Service  Activities"  below.  Sometimes sales and
service  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.

ADDITIONAL CONCESSIONS may be paid to Authorized Institutions from time to time.

SALES  ACTIVITIES.  Rule 12b-1  distribution  fees may be used to pay Authorized
Institutions  to finance any activity  which is primarily  intended to result in
the sale of shares. Lord Abbett Distributor uses its portion of the distribution
fees  attributable to the Fund's Class A and Class C shares for activities which
are primarily intended to result in the sale of such Class A and Class C shares,
respectively.  These  activities  include,  but are not limited to,  printing of
prospectuses and statements of additional information and reports for other than
existing shareholders,  preparation and distribution of advertising material and
sales  literature,   expenses  of  organizing  and  conducting  sales  seminars,
Additional  Concessions  to  Authorized  Institutions,  the cost  necessary  to
provide  distribution-related  services or personnel,  travel,  office expenses,
equipment and other allocable overhead.  

<PAGE>

SERVICE  ACTIVITIES.  Rule  12b-1  service  fees  may be used to pay  Authorized
Institutions for any activity which is primarily  intended to result in personal
service and/or the  maintenance of shareholder  accounts.  If any portion of the
service  fees is paid to Lord  Abbett  Distributor,  such  fees  will be used to
service and maintain shareholder accounts.

   The amounts  payable by the Fund (whether  distribution or service fees) need
not be directly related to expenses actually incurred by Lord Abbett Distributor
on behalf of the Fund. Thus, even if Lord Abbett  Distributor's  actual expenses
exceed the fee payable to Lord Abbett  Distributor  at any given time,  the Fund
will  not  be  obligated  to  pay  more  than  that  fee,  and  if  Lord  Abbett
Distributor's  expenses  are  less  than  the  fee  it  receives,   Lord  Abbett
Distributor will retain the full amount of the fee.

- --------------------------------------------------------------------------------
GLOSSARY OF TERMS

ADDITIONAL  CONCESSIONS.  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.  Additional  payments may be paid from Lord
Abbett  Distributor's  own resources or from distribution fees received from the
Fund 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".  Lord Abbett Distributor is an Authorized  Institution.  

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 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.

An acceptable form of guarantee would be as follows:


<PAGE>

   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 (and  sometimes  providing  for  acceptance of orders for such
shares on our behalf),  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.

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 


<PAGE>

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 the multi-class  Fund which is shown in
the comparisons below will be more 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.

- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>

                 NAV            MOP            S&P            RMC

<S>            <C>            <C>            <C>            <C>    
8/1/95         $10,000        $ 9,425        $10,000        $10,000
1995           $10,180        $ 9,595        $10,609        $10,524
1996           $13,011        $12,263        $12,600        $12,581
11/30/97       $16,772        $15,808        $16,059        $14,962

                             Fiscal Year-end 11/30


- --------------------------------------------------------------------------------
 
                     AVERAGE ANNUAL TOTAL RETURNS
                         FOR CLASS A SHARES(3)

                                              Life of Series
                     1 Year                  8/1/95 -- 11/30/97
                     21.50%                        21.69%
- --------------------------------------------------------------------------------
<FN>

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

(2) Performance  numbers for the  Standard  &Poor's  Mid-Cap 400 and the Russell
    Mid-Cap Growth Indices which are unmanaged, do not reflect transaction costs
    or  management  fees.  The second index is being used because it is a growth
    index which, in Fund management's  opinion,  is a more appropriate  standard
    against which to measure the Fund's  performance in view of the growth style
    of investing used to manage the portfolio.  See "Portfolio  Management".  An
    investor cannot invest directly in these indices.

(3) Total  return  is the  percent  change  in  value  with  all  dividends  and
    distributions  reinvested  for the  periods  shown  using  the  SEC-required
    uniform method to compute such return.
</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>

                                                       FIRST YEAR COMPENSATION


                                       Front-end
                                       sales charge           Dealer's
                                       paid by investors      concession             Service fee(1)          Total compensation(2)
Class A investments                    (% 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
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.
</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.
LAgof-1-1098
(10/98)

LORD ABBETT  
GROWTH  OPPORTUNITIES  FUND 
The General  Motors  Building 
767 Fifth Avenue 
New York, NY 10153-0203



<PAGE>

- --------------------------------------------------------------------------------
LORD ABBETT
Statement of Additional Information                              October 1, 1998


                      Lord Abbett Growth Opportunities Fund


This Statement of Additional  Information is not a Prospectus.  A Prospectus may
be obtained  from your  securities  dealer or from Lord Abbett  Distributor  LLC
("Lord Abbett") at The General Motors Building,  767 Fifth Avenue, New York, New
York  10153-0203.  This Statement  relates to, and should be read in conjunction
with, the Prospectus dated October 1, 1998.

The Lord Abbett Growth  Opportunities Fund (sometimes referred to as "we" or the
"Fund") is a diversified separate Series of Lord Abbett Research Fund, Inc. (the
"Company"),  an open-end management  investment company incorporated in Maryland
on April 6, 1992. The Fund's former name was Mid-Cap Series.  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.  Only
shares of the Fund are described in this Statement of Additional Information. To
date  130,000,000  shares  of the Fund  have  been  designated  by the  Board of
Directors.


Rule 18f-2 under the  Investment  Company Act of 1940,  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 the Fund  affected  by such  matter.  Rule 18f-2  further
provides  that a Fund  shall be deemed to be  affected  by a matter  unless  the
interests of the Fund in the matter are  identical or the matter does not affect
any interest of such Fund. However,  the Rule exempts from these separate voting
requirements the selection of independent  public  accountants,  the approval of
principal distributing contracts and the election of directors.

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

              TABLE OF CONTENTS                PAGE

        1.    Investment Objective and Policies         2

        2.    Directors and Officers                    4

        3.    Investment Advisory and Other Services    7

        4.    Portfolio Transactions                    8

        5.    Purchases, Redemptions
              and Shareholder Services                  9

        6.    Past Performance                          17

        7.    Taxes                                     18

        8.    Information About The Fund                19

        9.    Financial Statements                      19

<PAGE>

                                         1.
                        INVESTMENT OBJECTIVE AND POLICIES

FUNDAMENTAL  INVESTMENT  RESTRICTIONS.   The  Fund's  investment  objective  and
policies are described in the  Prospectus  under "How We Invest." In addition to
those policies described in the Prospectus, the Fund is subject to the following
fundamental investment restrictions which cannot be changed for the Fund without
the approval of the holders of a majority of the Fund's respective  shares.  The
Fund may not: (1) borrow  money  ,except that (i) the Fund may borrow from banks
(as defined in the Act) in amounts up to 33 1/3% of its total assets  (including
the amount  borrowed),  (ii) the Fund may borrow up to an  additional  5% of its
total assets for temporary  purposes,  (iii) the Fund may obtain such short-term
credit as may be necessary for the clearance of purchases and sales of portfolio
securities  and (iv) the Fund may  purchase  securities  on margin to the extent
permitted by  applicable  law; (2) pledge its assets  (other than to secure such
borrowings,  or to the extent  permitted  by the Fund's  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 the Fund 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 the Fund 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 the Fund 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 the  Fund,  buy
securities  of one  issuer  representing  more than (i) 5% of its gross  assets,
except securities issued or guaranteed by the U.S.  Government,  its agencies or
instrumentalities  or (ii) own more  than 10% of the  voting  securities  of any
issuer;  (7) invest more than 25% of its assets,  taken at market value,  in the
securities of issuers in any particular  industry  (excluding  securities of the
U.S.  Government,  its  agencies  and  instrumentalities);  or (8) issue  senior
securities to the extent such issuance would violate applicable law.

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

NON-FUNDAMENTAL INVESTMENT RESTRICTIONS. In addition to those policies described
in the Prospectus and the investment  restrictions above which cannot be changed
without  shareholder  approval,  the  Fund  also  is  subject  to the  following
non-fundamental  investment  policies  which  may be  changed  by the  Board  of
Directors without shareholder  approval.  The Fund 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 ("Rule 144A"), deemed to be
liquid by the Board of Directors;  (4) invest in securities of other  investment
companies  as defined in the Act,  except as permitted  by  applicable  law; (5)
invest in securities of which,  with their  predecessors,  have a record of less
than three years of  continuous  operation,  if more than 5% of the Fund's 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  when more than 1/2 of 1% of the  securities  of such
issuer are owned beneficially by one or more of the Fund's officers or directors
or by one or more partners of the Fund's  underwriter  or investment  adviser if
these owners in the aggregate own  beneficially  more than 5% of such securities
of such  issuer;  (7) invest in  warrants  if, at the time of  acquisition,  its
investment in warrants,  valued at the lower of cost or market,  to exceed 5% of
the Fund's total assets (included  within such limitation,  but not to exceed 2%
of the Funds total assets,  are warrants which are not listed on the New York or
American  Stock Exchange or a foreign  exchange);  and (8) invest in real estate
limited  partnership  interests or interest in oil, gas or other mineral leases,
or  exploration  or  development  programs,  except  that the Fund may invest in
securities  issued  by  companies  that  engage  in oil,  gas or  other  mineral
exploration or development activities.


<PAGE>

INVESTMENT TECHNIQUES WHICH MAY BE USED BY THE FUND

LENDING OF  PORTFOLIO  SECURITIES.  The Fund 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.  The Fund 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 the Fund will receive the income earned on investment of
collateral.  The aggregate value of the securities  loaned will not exceed 5% of
the value of the Fund's gross assets.

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

FOREIGN  CURRENCY  HEDGING  TECHNIQUES.  The Fund 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 Fund  expects  to enter into  forward  foreign
currency contracts in primarily two  circumstances.  First, when the Fund enters
into a contract for the purchase or sale of a security  denominated in a foreign
currency,  it may desire to "lock in" the U.S. dollar price of the security.  By
entering  into a forward  contract  for the  purchase  or sale of the  amount of
foreign currency involved in the underlying security transaction,  the Fund 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 Fund may enter into a
forward contract to sell the amount of foreign currency  approximating the value
of some or all of the Fund's  portfolio  securities  denominated in such foreign
currency  or, in the  alternative,  the Fund may use a  cross-hedging  technique
whereby it sells another currency which the Fund 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 Fund does not intend to enter into such forward  contracts
under this second circumstance on a continuous basis.

FOREIGN  CURRENCY  PUT AND CALL  OPTIONS.  The Fund  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 Fund, 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 Fund's net
assets.

<PAGE>

A call  option  written  by the Fund  gives the  purchaser,  upon  payment  of a
premium,  the right to purchase  from the Fund a currency at the exercise  price
until  the  expiration  of the  option.  The Fund 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 a Fund or in such cross currency  (referred to above) to
cover such call writing.

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


                                         2.
                             DIRECTORS AND OFFICERS

The following  director is a partner of Lord, Abbett & Co. ("Lord Abbett"),  The
General Motors Building, 767 Fifth Avenue, New York, New York 10153-0203. He has
been  associated  with Lord  Abbett for over five years and is also an  officer,
director or trustee of the twelve other Lord  Abbett-sponsored  funds.  He is an
"interested  person" as defined in the Act, and as such,  may be  considered  to
have an  indirect  financial  interest in the Rule 12b-1 Plan  described  in the
Prospectus.

Robert S. Dow, age 53, Chairman and 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

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 57.

William H.T. Bush
Bush-O'Donnell & Co., Inc
101 South Hanley Road, Suite 1025
St. Louis, Missouri

Co-founder   and   Chairman  of  the  Board  of  financial   advisory   firm  of
Bush-O'Donnell & Company. Age 60.


Robert B. Calhoun
Monitor Clipper Partners
650 Madison Avenue, 9th Floor
New York, NY

Managing Director of Monitor Clipper Partners and President of the Clipper Group
L.P., both private equity investment funds. Age 56.



<PAGE>

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,
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 65.

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

President and Chief Executive Officer of Rochester Button Company.  Age 70.

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

Chairman of Spencer  Stuart,  an executive  search  consulting  firm.  Currently
serves as Director of Ace, Ltd (NYSE). 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
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.
<PAGE>

<TABLE>
<CAPTION>

                       For the Fiscal Year Ended November 30, 1997

      (1)                   (2)                      (3)                        (4)
                                                  Pension or               For Year Ended
                                                  Retirement Benefits      December 31, 1997
                                                  Accrued by the Fund      Total Compensation
                         Aggregate                and All Other            Accrued by the Fund
                         Compensation             Lord Abbett-Sponsored    And All other Lord
NAME OF DIRECTOR         ACCRUED BY THE FUND      FUNDS2                   ABBETT--SPONSORED FUNDS3


<S>                       <C>                      <C>                     <C>    
E. Thayer Bigelow         None                     $17,068                 $56,000
William T. Bush*          None                     None                    None
Robert B. Calhoun**       None                     None                    None
Stewart S. Dixon          None                     $32,190                 $55,000
John C. Jansing           None                     $45,0854                $55,000
C. Alan MacDonald         None                     $30,703                 $57,400
Hansel B. Millican, Jr.   None                     $37,747                 $55,000
Thomas J. Neff            None                     $19,853                 $56,000


<FN>
- --------------------------------------------------------------------------------
* Elected as a director, June 17, 1998 effective as of August 13, 1998 
**Elected as a director, May 5, 1998 effective as of June 17, 1998


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. The Fund has not commenced  paying such fees.  When
    the Fund starts to pay such fees,  a portion of the fees payable by the Fund
    to its outside  directors/trustees  will be deferred under a plan that deems
    the  deferred  amounts  to be  invested  in  shares  of the Fund  for  later
    distribution  to  the  directors/trustees.  The  amounts  of  the  aggregate
    compensation payable by the other series of the Fund as of November 30,1997,
    deemed  invested  in Company  Shares,  including  dividends  reinvested  and
    changes in net asset value applicable to such deemed investments,  were: Mr.
    Bigelow,   $39,081;  Mr.  Dixon,  $107,152,   Mr.  Jansing,   $142,903,  Mr.
    MacDonald,$84,555; Mr. Millican,$143,927; and Mr. Neff,$143,008.

2.  The amounts in Column 3 were accrued by the Lord Abbett-Sponsored Fund's for
    the 12 months ended November 30, 1997 with respect to the equity based plans
    established  for  independent  directors  in 1996.  This plan  supersedes  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.  Each plan also  provided for a  pre-retirement  death benefit and
    actuarially reduced joint-and-survivor spousal benefits.

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.  Since no amounts of aggregate  compensation  were
    payable by the Fund for the year ended  November  30,  1997,  no shares were
    deemed invested in Fund 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 Company have
been associated with Lord Abbett for over five years. Of the following,  Messrs.
Brown,  Carper,  Hilstad,  Morris,  and Walsh are partners of Lord  Abbett;  the
others are employees: Robert G. Morris, age 52, Robert P. Fetch, age 45, Stephen
J. McGruder, age 54, Executive Vice Presidents,

<PAGE>

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.); Zane E. Brown, age 46; Daniel E. Carper,  age 46;
Lawrence H. Kaplan,  age 41 (with Lord Abbett since 1997 formerly Vice President
and Chief Counsel of Salomon  Brothers Asset  Management Inc. 1995 - 1997; prior
thereto Senior Vice President and Associate General Counsel of Kidder, Peabody &
Co.  Incorporated);  Thomas F. Konop,  age 56;  Gregory M.  Macosko,  age 51, A.
Edward Oberhaus,  age 38; Keith F. O'Connor, age 43; 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 Company's  By-Laws provide that the Company shall not hold an annual meeting
of its  stockholders  in any year unless one or more  matters are required to be
acted on by  stockholders  under the Act, or unless  called by a majority of the
Board of Directors or by stockholders  holding at least one quarter of the stock
of the Company  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 Company.

As of November 30, 1997 our officers and directors,  as a group, owned less than
12% of the Fund's outstanding shares.

                                         3.
                     INVESTMENT ADVISORY AND OTHER SERVICES

As  described  under "Our  Management"  in the  Prospectus,  Lord  Abbett is the
company's  investment  manager.  Seven of the seventeen general partners of Lord
Abbett are  officers  and/or  directors  of the  Company and are  identified  as
follows:  Zane E. Brown, Daniel E. Carper,  Robert S. Dow, Robert P. Fetch, Paul
A. Hilstad, Stephen J. McGruder,  Robert G. Morris, and John J. Walsh. The other
general  partners of Lord Abbett who are neither  officers nor  directors of the
Fund are Stephen I. Allen,  John E. Erad,  Daria L.  Foster,  Robert I.  Gerber,
Robert J. Noelke, Michael McLaughlin, W. Thomas Hudson, Christopher Towle and R.
Mark Pennington. The address of each partner is The General Motors Building, 767
Fifth Avenue, New York, New York 10153-0203.

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 .90 of 1% of the Fund's average daily net assets.  For the period
from August 1, 1995 (commencement of operations)  through November 30, 1995, and
each of the two fiscal  years ended  November  30, 1997 and the fiscal half year
ended May 31,  1998  this  management  fee was .75 of 1% and was  waived by Lord
Abbett with respect to the Fund and, except for this waiver, would have amounted
to $2,125, $8,249; $10,844, and $7,077 respectively.  On September 15, 1998, the
Fund's shareholders voted to raise the management fee to .90 of 1%.

We are  obligated  to pay all  expenses  not  expressly  assumed by Lord Abbett,
including,  without  limitation,  12b-1  expenses,  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 the Fund's
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
period from August 1, 1995  (commencement  of operations)  through  November 30,
1995 and each of the two fiscal years ended  November  30, 1997,  and the fiscal
half  year  ended  May  31,  1998,  Lord  Abbett,  although  not  obligated  to,
voluntarily assumed the above-mentioned expenses which, if not so assumed, would
have amounted to $7,544, $18,000; $12,000, and $6,000 respectively, with respect
to the Fund.

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

The Bank of New York ("BONY"), 48 Wall Street, New York, New York, is the Fund's
custodian.  In  accordance  with the  requirements  of Rule  17f-5,  the  Fund's
directors  have approved  arrangements  permitting the Fund's foreign assets not
held by BONY or its  foreign  branches to be held by certain  qualified  foreign
banks and depositories.


<PAGE>

                                         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 pay a commission rate determined to attract the services we
require, as described below. That rate may be higher or lower than other 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  Company  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 in a timely manner, 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
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 Fund's 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 


<PAGE>

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.

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

For the period from August 1, 1995  (commencement  of  operations)  through year
ended  November 30, 1995,  fiscal years ended  November 30, 1996,  1997, and the
fiscal half year ended May 31,  1998 we paid total  commissions  to  independent
broker-dealers of $3,245, $2,155, $3,687 and $4,027, respectively.

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

The  maximum  offering  price of our shares on October 1, 1998 was  computed  as
follows:

THE FUND

Net asset  value per  share (net  assets  value  divided by  shares outstanding)
 .......$11.91  
Maximum  offering price per share (net asset value divided by .9425) .... $12.64

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

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

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

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



<PAGE>

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 four different  classes of shares.
This  Statement  of  Additional   Information  offers  three  of  those  classes
designated Class A, B, and C. The fourth class is offered in another  prospectus
and  statement  of  additional  information.  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
are subject to service and  distribution  fees that are  currently  estimated to
total  annually  approximately  0.28 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 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 below.

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


<PAGE>

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
expect to need access to your money for seven years or more,


<PAGE>

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 a Distribution Plan and Agreement  pursuant to Rule 12b-1 of the Act for
each of the three  Fund  Classes:  the "A Plan," the "B Plan," and the "C Plan,"
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 shares of each Class,
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. Lord Abbett used all amounts received under each Plan for
payments to dealers for (i) providing continuous services to 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 shares of the Fund.

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
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.


<PAGE>

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)  and upon  early  redemption  of  shares.  In the case of Class A
shares,  this increase is represented by shares having an aggregate dollar value
in  your  account.  In the  case of  Class  B and C  shares,  this  increase  is
represented by that  percentage of each share redeemed where the net asset value
exceeded the initial purchase price.

CLASS A SHARES. As stated in the Prospectus,  subject to certain  exceptions,  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,  subject to certain exceptions,  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 services 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 CDSC will depend on the number of years since you invested and
the dollar amount being redeemed, according to the following schedule:

                                             Contingent Deferred Sales Charge
Anniversary of the Day on                    on Redemptions (As % of Amount 
Which the Purchase Order Was Accepted        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,  subject to certain exceptions,  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 this Fund's Class C shares.


<PAGE>

GENERAL.  The  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  CDSCs  described  above for
the Class A, Class B and Class C shares is sometimes  hereinafter referred to as
the "Applicable Percentage."

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 A shares
purchased pursuant to a special  retirement wrap program,  no CDSC is payable on
redemptions  which continue as investments in another fund  participating in the
program.  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 an  individual
shareholder (a natural person).  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 services 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 


<PAGE>

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
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 Fund 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 the Fund's  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  and Lord
Abbett Equity Fund ("LAEF") which is not issuing shares.

STATEMENT  OF  INTENTION.  Under  the terms of the  Statement  of  Intention  as
described  in the  Prospectus,  you may invest  $100,000 or more over a 13-month
period in shares of a Lord  Abbett-sponsored  fund  (other  than shares of LAEF,
LASF,  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).  Shares  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  of  Intention 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,  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.


<PAGE>

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 director'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  retired  directors and employees and other family  members
thereof.  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 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
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 and (g)
in connection with a merger,  acquisition or other  reorganization (h) through a
"special  retirement wrap program sponsored by an authorized  institution having
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 the Class A 12b-1  Plan and the fact
that the program relates to a  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 30 days'  prior  written  notice  will be given
before any such redemption,  during which time shareholders may avoid redemption
by bringing their accounts up to the minimum set by the Board.

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.


<PAGE>

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
Class B shares the CDSC will be waived on  redemptions  of up to 12% per year of
the current net asset value of your account at the time the SWP is  established.
For Class B share  redemptions  of 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
the retirement  plan forms including  401(k) plans and custodial  agreements for
IRAs (Individual Retirement Accounts, including Traditional, Education, Roth and
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 excluding
401(k) 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

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

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

<PAGE>

                                       7.
                                      TAXES

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

The writing of call options and other investment  techniques and practices which
the Fund may  utilize,  as  described  above under  "Investment  Objectives  and
Policies," may create  "straddles" for United States federal income tax purposes
and may affect the character and timing of the  recognition  of gains and losses
by the Fund.  Such  transactions  may increase the amount of short-term  capital
gain realized by the Fund, which is taxed as ordinary income when distributed to
shareholders.  Limitations  imposed by the  Internal  Revenue  Code on regulated
investment  companies may restrict the Fund's ability to engage in  transactions
in options. As described in the Prospectus under "How We Invest - Risk Factors,"
the Fund may be subject to foreign  withholding  taxes  which  would  reduce the
yield on its investments.  Tax treaties between certain countries and the United
States may reduce or eliminate such taxes. It is expected that Fund shareholders
who are  subject to United  States  federal  income tax will not be  entitled to
claim a federal  income tax credit or deduction for foreign income taxes paid by
the Fund.

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

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

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

<PAGE>

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


                                         8.
                           INFORMATION ABOUT THE FUND

The  directors,  trustees and officers of Lord  Abbett-sponsored  mutual Fund's,
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 G1 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 with respect to the Fund for the fiscal half year ended
May 31, 1998  (unaudited)  and 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 Fund 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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