Daniel S. Nagin is the Lester Hamburg University Professor of Public Policy and Statistics and since 2006 has served as the college’s Associate Dean of Faculty. He received his Ph.D. in 1976 from what is now the Heinz College of Information Systems and Public Policy. He is the co-editor of Criminology and Public Policy, chaired the National Research Council’s Committee on Deterrence and the Death Penalty, and served as Deputy Secretary for Fiscal Policy and Analysis in the Pennsylvania Department of Revenue from 1981 to 1986. He is an elected Fellow or Member of the American Society of Criminology, American Association for the Advancement of Science, American Academy of Political and Social Science, American Academy of Arts and Science, and (US) National Academy of Sciences. He is also...