Richard Sosis is an associate professor of anthropology at the University of Connecticut. His work has focused on the evolution of cooperation and the adaptive significance of religious behavior, with particular interest in the relationship between ritual and intra-group cooperation. To explore these issues, he has conducted fieldwork with remote cooperative fishers in the Federated States of Micronesia and with various communities throughout Israel, including Ultra-Orthodox Jews and members of secular and religious kibbutzim. He has also pursued ethnohistorical research on 19th century communal societies and conducted economic experiments with student and non-student populations in the United States and Israel.