D&B
Marketing Information Services, the largest marketing research company of the world
Kantar Group, the
second largest marketing research company of the world. Research International, Milward Brown, MRB Group are all its
members. It is also a member of WPP Group which also includes Olgilvy Mather Worldwide, a
famous advertising company.
IRI, the third
largest marketing research company of the world
GfK, the fourth largest marketing research
company of the world
Arbitron, the
fifth largest marketing research company of the world
Information
Resources Inc.
Westat
Inc.
Maritz
Marketing Research Inc.
Walsh International/PMSI
The
NPD Group
NFO
Research Inc.
Market Facts, Inc.
The M/A/R/C Group Can not browse it once.
Elrick
and Lavidge Inc.
Audits
& Surveys, Inc.
Abt
Associates Inc.
Opinion Research Corp.
Walker
Group
Intersearch Corp.
Macro
International Inc.
Burke
Marketing Research, Inc.
J.
D. Power & Associates
Roper
Starch Worldwide Inc.
Mercer
Managerment Consulting/Marketing Group
Research International (RI)
Chilton Research Services
Yankelovich Partners Inc.
ASI Market Research, Inc.
The
Wirthlin Worldwide
Market Strategies Inc.
Custom Research Inc.
Total
Research Corp.
Response Analysis Corp.
Research
Data Analysis Inc.
Market Decisions
Conway/Milliken & Assocs.