Directions (National Academy Press, 1997), New Tools for Environmental Policy: Education, Information and Voluntary Measures (National Academy Press, forthcoming), and Human Dimensions of Global Environmental Change (MIT Press, forthcoming).

NIVES DOLŠAK is a postdoctoral research associate at the Workshop in Political Theory and Policy Analysis, Indiana University, Bloomington. Her research examines institutional challenges in governing common-pool resources at multiple levels of aggregation. Her Ph.D. dissertation focused on designing markets for common-pool resources, including global carbon dioxide emission and sequestration markets. Her published work includes an analysis of domestic sources of international cooperation in curbing global climate change. She is currently co-editing a book, The Commons in the New Millennium: Challenges and Adaptation, with E. Ostrom. She holds a B.A. in economics from the University of Ljubljana, Slovenia, and a joint Ph.D. from the School of Public and Environmental Affairs and the Department of Political Science, Indiana University, Bloomington.

ARMIN FALK is an assistant professor at the University of Zürich and CESifo research fellow and research affiliate in the Labour Economics Programme of the Centre for Economic Policy Research in London, U.K. He teaches classes in organizational theory, microeconomics, and game theory. His research addresses labor economics, behavioral economics, and experimental economics. His recent work studies the determinants of informal sanctions and the theoretical modeling of reciprocity. Another line of research concerns contractual incompleteness and the nature of market interactions. Falk is also interested in economic policy and issues of policy evaluation. He received his Ph.D. in economics from the University of Zürich in 1998.

ERNST FEHR is a professor in labor economics and social policy and director of the Institute for Empirical Research in Economics at the University of Zürich. He also directs the Ludwig Boltzmann Institute for the Analysis of Economic Growth in Vienna. He has published many articles in journals, including American Economic Review, Econometrica, Journal of Political Economy, and Quarterly Journal of Economics. He is on the editorial board of Quarterly Journal of Economics, European Economic Review, Experimental Economics, and Journal of Socio-Economics. In 1999 he won the Gossen Prize of the German Economic Association and in 2000 the Hicks-Tinbergen Medal of the European Economic Association. His research focuses on the interplay among social preferences, social norms, and strategic interactions and on the psychology and economics of incentives. Fehr graduated from the University of Vienna in 1980, where he earned his doctorate in 1986.