<PAGE>   1

   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 25, 2000
                                                    REGISTRATION NO. 333-
================================================================================

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM S-8
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                           INFORMATION RESOURCES, INC.
             (Exact name of registrant as specified in its charter)

         DELAWARE                                       36-2947987
(State of incorporation or organization)    (I.R.S. Employer Identification No.)

                150 NORTH CLINTON STREET, CHICAGO, ILLINOIS 60661
                    (Address of Principal Executive Offices)

             INFORMATION RESOURCES, INC. 1999 RESTRICTED STOCK PLAN
     INFORMATION RESOURCES, INC. 1999 NONQUALIFIED DEFINED CONTRIBUTION PLAN
                            (Full title of the plans)

                              MONICA M. WEED, ESQ.
    EXECUTIVE VICE PRESIDENT AND GENERAL COUNSEL, INFORMATION RESOURCES, INC.
                150 NORTH CLINTON STREET, CHICAGO, ILLINOIS 60661
                   (312) 726-1221 (PHONE) (312) 726-1091 (FAX)
           (Name, Address, and Telephone Number of Agent for Service)

                                 WITH A COPY TO:
                           ROBERT A. MCWILLIAMS, ESQ.
 FREEBORN & PETERS, 311 SOUTH WACKER DRIVE, SUITE 3000, CHICAGO, ILLINOIS 60606
                   (312)360-6551 (PHONE) (312) 360-6570 (FAX)

APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after the effective date of this Registration Statement. The
securities that are being registered on this Form are to be offered on a delayed
or continuous basis pursuant to Rule 415 under the Securities Act of 1933.

<TABLE>
<CAPTION>
------------------------------------------------------------------------------------------------------
                                 CALCULATION OF REGISTRATION FEE

             Title Of Securities               Amount To Be    Offering Price        Amount Of
             To Be Registered(1)               Registered(2)   Per Share (3)      Registration Fee
------------------------------------------------------------------------------------------------------
<S>                                               <C>                                  <C>
 Common Stock $.01 par value per share.......     913,406         $7.375               $1,779

------------------------------------------------------------------------------------------------------
</TABLE>

(1)  Includes registration of any interests in the plans.

(2)  This Registration Statement shall also cover any additional shares of
     Registrant's Common Stock which become issuable under the plans by reason
     of any stock dividend, stock split, recapitalization or other similar
     transaction effected without the Registrant's receipt of consideration
     which results in an increase in the number of the Registrant's outstanding
     shares of Common Stock.

(3)  The Offering Price Per Share has been estimated in accordance with Rule
     457(h) under the Securities Act of 1933 as to 913,406 shares of Common
     Stock authorized for issuance pursuant to the plans described below, solely
     for the purpose of calculating the registration fee. The computation is
     based upon the average of the high and low price of the Common Stock as
     reported on the Nasdaq National Market on February 22, 2000. Includes
     36,406 shares and 877,000 shares reserved for issuance under (i) the 1999
     Restricted Stock Plan, and (ii) the 1999 Nonqualified Defined Contribution
     Plan, respectively.



<PAGE>   2


                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3.   INFORMATION INCORPORATED BY REFERENCE.

          The following documents filed by Information Resources, Inc. (the
"Registrant") with the Securities and Exchange Commission (the "Commission") are
incorporated by reference:

          (a)     the Company's Annual Report on Form 10-K for the year ended
                  December 31, 1998;

          (b)     the Company's Quarterly Reports on Form 10-Q for the quarters
                  ended March 31, 1999, June 30, 1999 and September 30, 1999;

          (c)     the description of the Company's common stock, par value $.01
                  per share, contained in the Company's Registration Statement
                  on Form 8-A dated December 22, 1983; and

          (d)     the description of the Company's stock purchase rights
                  contained in the Company's Registration Statement on Form 8-A
                  dated March 15, 1989.

          (e)     All reports and definitive proxy or information statements
                  filed pursuant to Section 13(a), 13(c), 14 or 15(d) of the
                  1934 Act after the date of this Registration Statement and
                  prior to the filing of a post-effective amendment which
                  indicates that all securities offered hereby have been sold or
                  which de-registers all securities then remaining unsold shall
                  be deemed to be incorporated by reference into this
                  Registration Statement and to be a part hereof from the date
                  of filing of such documents.

         Any statement contained in a document incorporated or deemed to be
incorporated by reference herein shall be deemed to be modified or superseded
for purposes of this Registration Statement to the extent that a statement
contained herein or in any subsequently filed document which also is deemed to
be incorporated by reference herein modifies or supersedes such statement. Any
such statement so modified or superseded shall not be deemed, except as so
modified or superseded, to constitute a part of this Registration Statement.

ITEM 4.   DESCRIPTION OF SECURITIES.

          Not applicable.

ITEM 5.   INTERESTS OF NAMED EXPERTS AND COUNSEL.

          Not applicable.

ITEM 6.   INDEMNIFICATION OF DIRECTORS AND OFFICERS.

          The Registrant's Certificate of Incorporation: (a) eliminates the
personal liability of the Registrant's directors and officers for monetary
damages arising from a breach of their fiduciary duties under certain
circumstances; and (b) authorizes the Registrant to indemnify its directors and
officers to the fullest extent permitted by the Delaware General Corporation
Law. The limitation of liability in the Certificate of Incorporation does not
affect the availability of equitable remedies such as injunctive relief or
rescission, and does not apply to liabilities arising under the federal
securities laws. The Registrant's



<PAGE>   3


Bylaws: (a) allow for the indemnity of the Registrant's directors and officers
to the fullest extent permitted by the Delaware General Corporation Law; and (b)
require, under certain circumstances, Registrant to advance expenses to its
directors and officers in connection with a legal proceeding.

         Registrant has also entered into indemnification agreements with its
directors which allow for the indemnification of directors for most expenses,
including attorneys' fees, judgments, fines and settlement amounts incurred by
them in any action or proceeding, including any action brought by or in the
right of Registrant, or any other company or enterprise to which the person
provides services at the request of Registrant. Under these Agreements,
Registrant is also required to advance expenses to its directors under certain
circumstances.

ITEM 7.    EXEMPTION FROM REGISTRATION CLAIMED.

           Not applicable.

ITEM 8.    EXHIBITS.

           The exhibits listed on the accompanying Index to Exhibits are a part
of this Registration Statement. (See Exhibit Index below).

ITEM 9.    UNDERTAKINGS.

           (a)  Registrant undertakes:

                (1)  to file, during any period in which offers or sales are
                     being made, a post-effective amendment to this Registration
                     Statement:

                     (i)   To include any prospectus required by Section
                           10(a)(3) of the Securities Act;

                     (ii)  To reflect in the prospectus any facts or events
                           arising after the effective date of the Registration
                           Statement (or the most recent post-effective
                           amendment thereof) which, individually or in the
                           aggregate, represent a fundamental change in the
                           information set forth in the Registration Statement.
                           Notwithstanding the foregoing, any increase or
                           decrease in volume of securities offered (if the
                           total dollar value of securities offered would not
                           exceed that which was registered) and any deviation
                           from the low or high end of the estimated maximum
                           offering range may be reflected in the form of a
                           prospectus filed with the Commission pursuant to Rule
                           424(b) if, in the aggregate, the changes in volume
                           and price represent no more than a 20% change in the
                           maximum aggregate offering price set forth in the
                           "Calculation of Registration Fee" table in the
                           effective Registration Statement;

                     (iii) To include any material information with respect to
                           the plan of distribution not previously disclosed in
                           the Registration Statement or any material change to
                           such information in the Registration Statement;

                     Provided, however, that paragraphs (1)(i) and (1)(iii) do
                not apply if the information required to be included in a
                post-effective amendment by those paragraphs is contained in
                periodic reports filed with or furnished to the Commission by
                the Registrant




                                     - 2 -
<PAGE>   4


                pursuant to Section 13 or Section 15(d) of the Exchange Act that
                are incorporated by reference in the Registration Statement.

                (2)  That, for the purpose of determining any liability under
                     the Securities Act, each such post-effective amendment
                     shall be deemed to be a new registration statement relating
                     to the securities offered therein, and the offering of such
                     securities at that time shall be deemed to be the initial
                     bona fide offering thereof.

                (3)  To remove from registration by means of a post-effective
                     amendment any of the securities being registered which
                     remain unsold at the termination of the offering.


           (b)  Registrant undertakes that, for purposes of determining any
                liability under the Securities Act, each filing of the annual
                report of Registrant pursuant to Section 13(a) or Section 15(d)
                of the Exchange Act (and, where applicable, each filing of an
                employee benefit plan's annual report pursuant to Section 15(d)
                of the Exchange Act) that is incorporated by reference in the
                Registration Statement, shall be deemed to be a new registration
                statement relating to the securities offered therein, and the
                offering of such securities at that time shall be deemed to be
                an initial bona fide offering thereof.

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



                                     - 3 -
<PAGE>   5

                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, as amended,
the Registrant certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-8 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized in the City of Chicago, State of Illinois on February 17, 2000.

                                       INFORMATION RESOURCES, INC.

                                       By:  /s/ Joseph P. Durrett
                                          -------------------------------------
                                               Joseph P. Durrett
                                               Chairman, President and Chief
                                               Executive Officer

                                POWER OF ATTORNEY

         KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature
appears below constitutes and appoints Joseph P. Durrett and Monica M. Weed,
jointly and severally, his attorneys-in-fact, each with the power of
substitution, for him in any and all capacities, to sign any amendments to this
Registration Statement on Form S-8, and to file the same, with exhibits thereto
and other documents in connection therewith, with the Securities and Exchange
Commission, hereby ratifying and confirming all that each of said
attorneys-in-fact, or his substitute or substitutes, may do or cause to be done
by virtue hereof.

         Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities indicated on February 17, 2000.


/s/ Joseph P. Durrett                  Chairman, President and Chief Executive
------------------------------------   Officer (Principal Executive Officer)
         Joseph P. Durrett             and Director

/s/ Gary Hill                          Chief Financial Officer (Principal
------------------------------------   Financial and Accounting Officer)
         Gary Hill

/s/ James G. Andress                   Director
------------------------------------
         James G. Andress

/s/ William B. Connell                 Director
------------------------------------
         William B. Connell

/s/ Edwin E. Epstein                   Director
------------------------------------
         Edwin E. Epstein

/s/ Bruce A. Gescheider                Director
------------------------------------
         Bruce A. Gescheider

/s/ John D.C. Little Ph.D.             Director
------------------------------------
         John D.C. Little Ph.D.

/s/ Leonard M. Lodish                  Director
------------------------------------
         Leonard M. Lodish

/s/ Edward E. Lucente                  Director
------------------------------------
         Edward E. Lucente

/s/ Jeffrey P. Stamen                  Director
------------------------------------
         Jeffrey P. Stamen

/s/ R.H. Van Wagener, Jr.              Director
------------------------------------
         R.H. Van Wagener, Jr.

/s/ Thomas W. Wilson                   Director
------------------------------------
         Thomas W. Wilson


                                     - 4 -
<PAGE>   6


                                 EXHIBIT INDEX

Exhibit     Description
-------     -----------

4.1         Certificate of Incorporation of the Registrant, as amended
            (incorporated by reference to Exhibit 3(a) to the Registrant's
            Annual Report on Form 10-K for the year ended December 31, 1988, and
            Exhibit 3(c) to the Registrant's Annual Report on Form 10-K for the
            year ended December 31, 1989)

4.2         By-Laws of the Registrant, as amended (incorporated by reference to
            Exhibit 3(b) to the Registrant's Annual Report on Form 10-K for the
            year ended December 31, 1988, and Exhibit 3(d) to the Registrant's
            Annual Report on Form 10-K for the year ended December 31, 1989)

4.3         Form of Rights Agreement between the Registrant and Harris Trust and
            Savings Bank, as Rights Agent (incorporated by reference to Exhibit
            4.1 to the Registrant's Registration Statement on Form 8-A filed
            with the Commission on March 15, 1989)

5.1         Opinion of Freeborn & Peters (filed herewith)

23.1        Consent of Ernst & Young LLP (filed herewith)

23.2        Consent of Freeborn & Peters (contained in Exhibit 5.1 hereto)

24.1        Power of Attorney (contained on Signature Page)

99.1        Information Resources, Inc. 1999 Restricted Stock Plan (filed
            herewith)

99.2        Information Resources, Inc. 1999 Nonqualified Defined Contribution
            Plan (filed herewith)

99.3        Information Resources, Inc. Nonqualified Defined Contribution Plan
            Trust (filed herewith)
[{"type": "S-8", "sequence": "1", "description": "FORM S-8", "secsgml_size_bytes": 18553}]
{"company-data": {"conformed-name": "INFORMATION RESOURCES INC", "cik": "0000714278", "assigned-sic": "8700", "irs-number": "362947987", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-31182", "film-number": "554106"}, "business-address": {"street1": "150 N CLINTON ST", "city": "CHICAGO", "state": "IL", "zip": "60661-1416", "phone": "3127261221"}, "mail-address": {"street1": "150 N CLINTON ST", "city": "CHICAGO", "state": "IL", "zip": "60661-1416"}}
1

   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 25, 2000
                                                    REGISTRATION NO. 333-
================================================================================

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM S-8
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                           INFORMATION RESOURCES, INC.
             (Exact name of registrant as specified in its charter)

         DELAWARE                                       36-2947987
(State of incorporation or organization)    (I.R.S. Employer Identification No.)

                150 NORTH CLINTON STREET, CHICAGO, ILLINOIS 60661
                    (Address of Principal Executive Offices)

             INFORMATION RESOURCES, INC. 1999 RESTRICTED STOCK PLAN
     INFORMATION RESOURCES, INC. 1999 NONQUALIFIED DEFINED CONTRIBUTION PLAN
                            (Full title of the plans)

                              MONICA M. WEED, ESQ.
    EXECUTIVE VICE PRESIDENT AND GENERAL COUNSEL, INFORMATION RESOURCES, INC.
                150 NORTH CLINTON STREET, CHICAGO, ILLINOIS 60661
                   (312) 726-1221 (PHONE) (312) 726-1091 (FAX)
           (Name, Address, and Telephone Number of Agent for Service)

                                 WITH A COPY TO:
                           ROBERT A. MCWILLIAMS, ESQ.
 FREEBORN & PETERS, 311 SOUTH WACKER DRIVE, SUITE 3000, CHICAGO, ILLINOIS 60606
                   (312)360-6551 (PHONE) (312) 360-6570 (FAX)

APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after the effective date of this Registration Statement. The
securities that are being registered on this Form are to be offered on a delayed
or continuous basis pursuant to Rule 415 under the Securities Act of 1933.
------------------------------------------------------------------------------------------------------
                                 CALCULATION OF REGISTRATION FEE

             Title Of Securities               Amount To Be    Offering Price        Amount Of
             To Be Registered(1)               Registered(2)   Per Share (3)      Registration Fee
------------------------------------------------------------------------------------------------------
Common Stock $.01 par value per share.......     913,406         $7.375               $1,779

------------------------------------------------------------------------------------------------------
(1)  Includes registration of any interests in the plans.

(2)  This Registration Statement shall also cover any additional shares of
     Registrant's Common Stock which become issuable under the plans by reason
     of any stock dividend, stock split, recapitalization or other similar
     transaction effected without the Registrant's receipt of consideration
     which results in an increase in the number of the Registrant's outstanding
     shares of Common Stock.

(3)  The Offering Price Per Share has been estimated in accordance with Rule
     457(h) under the Securities Act of 1933 as to 913,406 shares of Common
     Stock authorized for issuance pursuant to the plans described below, solely
     for the purpose of calculating the registration fee. The computation is
     based upon the average of the high and low price of the Common Stock as
     reported on the Nasdaq National Market on February 22, 2000. Includes
     36,406 shares and 877,000 shares reserved for issuance under (i) the 1999
     Restricted Stock Plan, and (ii) the 1999 Nonqualified Defined Contribution
     Plan, respectively.
2

                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3.   INFORMATION INCORPORATED BY REFERENCE.

          The following documents filed by Information Resources, Inc. (the
"Registrant") with the Securities and Exchange Commission (the "Commission") are
incorporated by reference:

          (a)     the Company's Annual Report on Form 10-K for the year ended
                  December 31, 1998;

          (b)     the Company's Quarterly Reports on Form 10-Q for the quarters
                  ended March 31, 1999, June 30, 1999 and September 30, 1999;

          (c)     the description of the Company's common stock, par value $.01
                  per share, contained in the Company's Registration Statement
                  on Form 8-A dated December 22, 1983; and

          (d)     the description of the Company's stock purchase rights
                  contained in the Company's Registration Statement on Form 8-A
                  dated March 15, 1989.

          (e)     All reports and definitive proxy or information statements
                  filed pursuant to Section 13(a), 13(c), 14 or 15(d) of the
                  1934 Act after the date of this Registration Statement and
                  prior to the filing of a post-effective amendment which
                  indicates that all securities offered hereby have been sold or
                  which de-registers all securities then remaining unsold shall
                  be deemed to be incorporated by reference into this
                  Registration Statement and to be a part hereof from the date
                  of filing of such documents.

         Any statement contained in a document incorporated or deemed to be
incorporated by reference herein shall be deemed to be modified or superseded
for purposes of this Registration Statement to the extent that a statement
contained herein or in any subsequently filed document which also is deemed to
be incorporated by reference herein modifies or supersedes such statement. Any
such statement so modified or superseded shall not be deemed, except as so
modified or superseded, to constitute a part of this Registration Statement.

ITEM 4.   DESCRIPTION OF SECURITIES.

          Not applicable.

ITEM 5.   INTERESTS OF NAMED EXPERTS AND COUNSEL.

          Not applicable.

ITEM 6.   INDEMNIFICATION OF DIRECTORS AND OFFICERS.

          The Registrant's Certificate of Incorporation: (a) eliminates the
personal liability of the Registrant's directors and officers for monetary
damages arising from a breach of their fiduciary duties under certain
circumstances; and (b) authorizes the Registrant to indemnify its directors and
officers to the fullest extent permitted by the Delaware General Corporation
Law. The limitation of liability in the Certificate of Incorporation does not
affect the availability of equitable remedies such as injunctive relief or
rescission, and does not apply to liabilities arising under the federal
securities laws. The Registrant's
3

Bylaws: (a) allow for the indemnity of the Registrant's directors and officers
to the fullest extent permitted by the Delaware General Corporation Law; and (b)
require, under certain circumstances, Registrant to advance expenses to its
directors and officers in connection with a legal proceeding.

         Registrant has also entered into indemnification agreements with its
directors which allow for the indemnification of directors for most expenses,
including attorneys' fees, judgments, fines and settlement amounts incurred by
them in any action or proceeding, including any action brought by or in the
right of Registrant, or any other company or enterprise to which the person
provides services at the request of Registrant. Under these Agreements,
Registrant is also required to advance expenses to its directors under certain
circumstances.

ITEM 7.    EXEMPTION FROM REGISTRATION CLAIMED.

           Not applicable.

ITEM 8.    EXHIBITS.

           The exhibits listed on the accompanying Index to Exhibits are a part
of this Registration Statement. (See Exhibit Index below).

ITEM 9.    UNDERTAKINGS.

           (a)  Registrant undertakes:

                (1)  to file, during any period in which offers or sales are
                     being made, a post-effective amendment to this Registration
                     Statement:

                     (i)   To include any prospectus required by Section
                           10(a)(3) of the Securities Act;

                     (ii)  To reflect in the prospectus any facts or events
                           arising after the effective date of the Registration
                           Statement (or the most recent post-effective
                           amendment thereof) which, individually or in the
                           aggregate, represent a fundamental change in the
                           information set forth in the Registration Statement.
                           Notwithstanding the foregoing, any increase or
                           decrease in volume of securities offered (if the
                           total dollar value of securities offered would not
                           exceed that which was registered) and any deviation
                           from the low or high end of the estimated maximum
                           offering range may be reflected in the form of a
                           prospectus filed with the Commission pursuant to Rule
                           424(b) if, in the aggregate, the changes in volume
                           and price represent no more than a 20% change in the
                           maximum aggregate offering price set forth in the
                           "Calculation of Registration Fee" table in the
                           effective Registration Statement;

                     (iii) To include any material information with respect to
                           the plan of distribution not previously disclosed in
                           the Registration Statement or any material change to
                           such information in the Registration Statement;

                     Provided, however, that paragraphs (1)(i) and (1)(iii) do
                not apply if the information required to be included in a
                post-effective amendment by those paragraphs is contained in
                periodic reports filed with or furnished to the Commission by
                the Registrant

                                     - 2 -
4

                pursuant to Section 13 or Section 15(d) of the Exchange Act that
                are incorporated by reference in the Registration Statement.

                (2)  That, for the purpose of determining any liability under
                     the Securities Act, each such post-effective amendment
                     shall be deemed to be a new registration statement relating
                     to the securities offered therein, and the offering of such
                     securities at that time shall be deemed to be the initial
                     bona fide offering thereof.

                (3)  To remove from registration by means of a post-effective
                     amendment any of the securities being registered which
                     remain unsold at the termination of the offering.

           (b)  Registrant undertakes that, for purposes of determining any
                liability under the Securities Act, each filing of the annual
                report of Registrant pursuant to Section 13(a) or Section 15(d)
                of the Exchange Act (and, where applicable, each filing of an
                employee benefit plan's annual report pursuant to Section 15(d)
                of the Exchange Act) that is incorporated by reference in the
                Registration Statement, shall be deemed to be a new registration
                statement relating to the securities offered therein, and the
                offering of such securities at that time shall be deemed to be
                an initial bona fide offering thereof.

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

                                     - 3 -
5

                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, as amended,
the Registrant certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-8 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized in the City of Chicago, State of Illinois on February 17, 2000.

                                       INFORMATION RESOURCES, INC.

                                       By:  /s/ Joseph P. Durrett
                                          -------------------------------------
                                               Joseph P. Durrett
                                               Chairman, President and Chief
                                               Executive Officer

                                POWER OF ATTORNEY

         KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature
appears below constitutes and appoints Joseph P. Durrett and Monica M. Weed,
jointly and severally, his attorneys-in-fact, each with the power of
substitution, for him in any and all capacities, to sign any amendments to this
Registration Statement on Form S-8, and to file the same, with exhibits thereto
and other documents in connection therewith, with the Securities and Exchange
Commission, hereby ratifying and confirming all that each of said
attorneys-in-fact, or his substitute or substitutes, may do or cause to be done
by virtue hereof.

         Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities indicated on February 17, 2000.

/s/ Joseph P. Durrett                  Chairman, President and Chief Executive
------------------------------------   Officer (Principal Executive Officer)
         Joseph P. Durrett             and Director

/s/ Gary Hill                          Chief Financial Officer (Principal
------------------------------------   Financial and Accounting Officer)
         Gary Hill

/s/ James G. Andress                   Director
------------------------------------
         James G. Andress

/s/ William B. Connell                 Director
------------------------------------
         William B. Connell

/s/ Edwin E. Epstein                   Director
------------------------------------
         Edwin E. Epstein

/s/ Bruce A. Gescheider                Director
------------------------------------
         Bruce A. Gescheider

/s/ John D.C. Little Ph.D.             Director
------------------------------------
         John D.C. Little Ph.D.

/s/ Leonard M. Lodish                  Director
------------------------------------
         Leonard M. Lodish

/s/ Edward E. Lucente                  Director
------------------------------------
         Edward E. Lucente

/s/ Jeffrey P. Stamen                  Director
------------------------------------
         Jeffrey P. Stamen

/s/ R.H. Van Wagener, Jr.              Director
------------------------------------
         R.H. Van Wagener, Jr.

/s/ Thomas W. Wilson                   Director
------------------------------------
         Thomas W. Wilson

                                     - 4 -
6

                                 EXHIBIT INDEX

Exhibit     Description
-------     -----------

4.1         Certificate of Incorporation of the Registrant, as amended
            (incorporated by reference to Exhibit 3(a) to the Registrant's
            Annual Report on Form 10-K for the year ended December 31, 1988, and
            Exhibit 3(c) to the Registrant's Annual Report on Form 10-K for the
            year ended December 31, 1989)

4.2         By-Laws of the Registrant, as amended (incorporated by reference to
            Exhibit 3(b) to the Registrant's Annual Report on Form 10-K for the
            year ended December 31, 1988, and Exhibit 3(d) to the Registrant's
            Annual Report on Form 10-K for the year ended December 31, 1989)

4.3         Form of Rights Agreement between the Registrant and Harris Trust and
            Savings Bank, as Rights Agent (incorporated by reference to Exhibit
            4.1 to the Registrant's Registration Statement on Form 8-A filed
            with the Commission on March 15, 1989)

5.1         Opinion of Freeborn & Peters (filed herewith)

23.1        Consent of Ernst & Young LLP (filed herewith)

23.2        Consent of Freeborn & Peters (contained in Exhibit 5.1 hereto)

24.1        Power of Attorney (contained on Signature Page)

99.1        Information Resources, Inc. 1999 Restricted Stock Plan (filed
            herewith)

99.2        Information Resources, Inc. 1999 Nonqualified Defined Contribution
            Plan (filed herewith)

99.3        Information Resources, Inc. Nonqualified Defined Contribution Plan
            Trust (filed herewith)