Robert Sugden, a professor of economics at the University of East Anglia, uses a combination of theoretical, experimental, and philosophical methods to investigate issue in welfare economics, social choice, the foundations of decision theory and game theory, and the evolution of social conventions. Educated at the University of York, where he took first class honors and earned distinction in history and economics, he went on to University College, Cardiff, for a master’s degree in economics before returning to York, where he was awarded a D.Litt. in economics in 1988. He began his teaching career there as a lecturer in economics in 1971, moved to the University of Newcastle upon Tyne as a reader in economics in 1978, and accepted his present position in 1985. Dr. Sugden held a Leverhulme Personal Research Professorship at East Anglia for five years and currently holds an Economic and Social Research Council personal research fellowship. He has been a visiting research associate as well as the James M. Buchanan Visiting Fellow at the Virginia Polytechnic Institute and State University, a visiting research fellow at the Australian National University, a visiting professor at the University of California at Davis, and a visiting scholar at Bowling Green State University, the University of British Columbia, and the University of Victoria in British Columbia. A fellow of the British Academy, he was formerly a member of the Council of the Royal Economic Society. He currently serves on the editorial boards of Theory and Decision, the Journal des Economistes et des Etudes Humaines, Economics and Philosophy, Utilitas, Politics, Philosophy and Economics, the Journal of Economic Psychology, and the Journal of Institutional Economics. The author of more than ninety papers published in academic journals, Dr. Sugden is the co-editor (with Benedetto Gui) of Economics and Social Interaction (2005), a book in which economic concepts are used for understanding interpersonal phenomena within the spheres of markets and productive organizations, and, most recently, (with Natalie Gold) of Beyond Individual Choice: Teams and Frames in Game Theory (Princeton University Press, 2006), a book by the late Michael Bacharach, which was unfinished at the author’s death. He is the co-author of four books and the author of two others, The Political Economy of Public Choice (1981) and The Economics of Rights, Co-operation and Welfare, an influential study, first published by Blackwell in 1986 and re-issued by Palgrave Macmillan in 2004, which shows how conventions of property, mutual aid, and voluntary supply of public goods can evolve spontaneously out of interactions of self-interested individuals and become moral norms.