Robert D. Hoge, PhD, is Professor Emeritus of Psychology and Distinguished Research Professor at Carleton University in Ottawa, where he is involved in teaching and research in child and adolescent psychology, forensic psychology, and psychological assessment. He has served as a consultant to numerous government and private agencies in Canada, the United States, and other countries. Dr. Hoge has published numerous articles and books, and he is coauthor of the Youth Level of Service/Case Management Inventory, a widely used risk-need assessment tool. Nancy G. Guerra, EdD, is Professor of Psy...