Beth L. Leech is Associate Professor of Political Science at Rutgers University. Her primary research interests involve the roles of interest groups, social movements, and the mass media in the making of public policy. She is currently involved in a project funded by the National Science Foundation that examines policy argumentation and issue definition by interest groups in Washington, and she is writing a book on interest group lobbying strategies. In 2005 she received the Emerging Scholar Award from the Political Organizations and Parties section of the American Political Science Association. Her publications include Basic Interests: The Importance of Groups in Politics and Political Science, written with Frank R. Baumgartner, as well as numerous articles and book chapters. As a Visiting Scholar at CSDP, Beth will complete a book manuscript, Meeting at Grand Central: Culture and the Evolution of Cooperation, as well as a series of journal articles dealing with problems of collective action in agenda-setting processes.