ABSTRACT
Executives from 20 think tanks were approached to write essays on the role, value, and impact of these organizations, 19 of which submitted essays. The essays illuminate the data and analysis presented in the first half of the book by capturing the diversity of perspectives and the challenges facing some of the leading public policy research organizations in the United States. One of the central objectives of the book is to help understand how the field of think tanks has dramatically changed and why this class of institutions has become so diverse.
