In 1958 he founded the marketing and research firm Daniel Yankelovich, Inc., which was later renamed as Yankelovich, Skelly, & White, Inc., remaining chair till 1986. In 2008, Yankelovich merged with Henley HeadlightVision to create The Futures Company, a planning consultancy that exists under the WPP communications holding company. He also founded The New York Times/Yankelovich Poll, now The New York Times/CBS Poll. In 1976, together with Cyrus Vance, he founded Public Agenda, a nonpartisan group devoted to public opinion and citizen education. In 1995 he was awarded the Helen Dinerman Award by the World Association for Public Opinion Research.
Yankelovich conducted an analysis of Landmark Education, Analysis of The Landmark Forum and Its Benefits, which consisted of a survey conducted of more than 1300 people who completed The Landmark Forum during a three-month period. Some details of the study methodology, especially concerning sampling methods and demographics of study participants, remain undefined in Landmark Education's "full report" on it. It is unknown whether any part of Yankelovich's study was based on direct empirical research through participation in any of Landmark Education's related coursework. Yankelovich concluded that 3 month after having participated 90% to 95% self-reported value in taking the course.
The New Framework Group
By 1982, Yankelovich had grown concerned that many of the postwar policies which had more or less succeeded between 1945-1980 were badly in need of rethinking. With Congressman Les Aspin, Yankelovich chaired The New Framework Group, which brought together prominent men and women in a variety of fields, to discuss fruitful areas of reform. They created four subgroups: in economic policy, foreign affairs, social policy, and the role of government.
Publications
His books include Coming to Public Judgment:Making Democracy Work in a Complex World, The Magic of Dialogue:Transforming Conflict into Cooperation, Profit With Honor: The New Stage of Market Capitalism, and Uniting America: Restoring the Vital Center to American Democracy ).
In 2012, he founded the Yankelovich Center for Social Science Research at the University of California, San Diego, devoted to using social science to find practical solutions to the nation's most pressing problems. The center's projects include a commission to recommend evidence-based strategies for increasing upward mobility.