Daniel S. Nagin is Teresa and H. John Heinz III University Professor of Public Policy and Statistics at the Heinz College, Carnegie Mellon University. His research focuses on the evolution of criminal and antisocial behaviors over the life course, the deterrent effect of criminal and non-criminal penalties on illegal behaviors, and the development of statistical methods for analyzing longitudinal data.

Terrie E. Moffitt studies how genetic and environmental risks work together to shape the developmental course of abnormal human behaviors and psychiatric disorders. Her particular interest is in antisocial and criminal behavior, but she also studies depression, psychosis, and substance abuse. She is a licensed clinical psychologist, who completed her clinical hospital training at the UCLA Neuropsychiatric Institute. She is associate director of the Dunedin Longitudinal Study, which follows 1000 people born in 1972 in New Zealand from birth to age 38 so far.