Cristina Bicchieri is the S.J.P. Harvie Professor of Social Thought and Comparative Ethics in the Philosophy Department at the University of Pennsylvania, and director of the Philosophy, Politics and Economics program. She is also a Professor in the Legal Sudies department of the Wharton School, and a member of the Graduate group in Psychology. She is one of the world's foremost scholars of rational choice and philosophy of social science, and a leader in the new field of behavioral ethics.