Dennis Barr is the Director of Program Evaluation at Facing History and Ourselves, as well as a psychologist. He is a Lecturer of Education at the Harvard Graduate School of Education. He was the principal investigator for the Carnegie Corporation of New York-funded research entitled, Intergroup relations among youth: a study of the impact and processes of Facing History and Ourselves. The Ostracism Case Study emerged from this project. Barr has published articles based on his research on social and ethical development and risk taking behavior in adolescents.