Interest group theory, incrementalism and policy making, effects of public opinion on the legislative process
Incrementalism and Public Policy (Longman, 1992); Lobbyists and Legislators; various book chapters and articles (Journal of Politics, Polity) on the influence of interest groups or public opinion on policy making
Woodrow Wilson Fellow; E.E. Schattschneider Award from the American Political Science Association for best dissertation in American politics; Jack Walker Award from the American Political Science Association's section on Political Organizations and Parties for the contribution of my 1978 Journal of Politics article on the study of interest groups
