EXHIBIT 23.7
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
The Board of Directors and Stockholders
Gartner Group, Inc.:
 
We consent to the use of our report dated October 31, 1997, with respect to the
consolidated balance sheets of Gartner Group, Inc. and subsidiaries as of
September 30, 1997 and 1996, and the related consolidated statements of
operations, changes in stockholders' equity, and cash flows for the years then
ended, which report appears in the September 30, 1997 Form 10-K of Gartner
Group, Inc., in this Registration Statement filed on Form S-4 by Cognizant
Corporation and to the reference to our firm under the heading "Experts" in the
Registration Statement.
 
                                              KPMG PEAT MARWICK LLP
 
Stamford, Connecticut
June 1, 1998