Roger D. Congleton is Professor of Economics and Senior Research Associate, Center for Study of Public Choice, at George Mason University, Fairfax, Virginia, where he has taught since 1988. His research focuses on the political economy of constitutions and public policy. Professor Congleton's most recent books include 40 Years of Research on Rent Seeking (two edited volumes, 2008), which surveys the theoretical and applied literatures on rent seeking; Democratic Constitutional Design and Public Policy (2006), which surveys the empirical literature on the effects of democratic constitutional design on public policies and economic growth; Improving Democracy through Constitutional Reform (2003), which analyzes the effects of constitutional reform on policies and economic developments within Sweden during the past two centuries; and Politics by Principle Not Interest (Cambridge University Press, 1998, written with Nobel prize winner James Buchanan), which analyzes how a generality rule can improve the performance of democratic governments. In addition to his books, Professor Congleton has published more than 100 papers in academic journals and edited volumes on such topics as the politics of constitutional reform, the importance of information in democratic decision making, the emergence and significance of norms, and analyzed policy-making within national governments and international organizations.