Wayne N. Welsh is Professor Emeritus of Criminal Justice at Temple University. He has published numerous peer-reviewed articles in journals such as Criminal Justice and Behavior, Drug and Alcohol Dependence, Crime & Delinquency, and Criminology. Welsh served as Deputy Editor of The Prison Journal from 1993 to 2000. He has conducted research in two broad areas: (1) applications of organizational theory to criminal justice and examinations of organizational change; and (2) theories of violent behavior and intervention/prevention programs.

Philip W. Harris is Associate Professor Emeritus in the Department of Criminal Justice at Temple University, where he taught courses and conducted research on juvenile justice policy, organizational development, and program and policy analysis for 35 years. Prior to arriving at Temple in 1980, he served as a professional services administrator for a private juvenile correctional agency in Montreal, where he was responsible for assessment services and staff training. Harris is the 2001 recipient of the Alva and Gunnar Myrdal Government Service Award, given annually by the American Evaluation Association, and was awarded the 2005 Marguerite Warren and Ted Palmer Award from the Sentencing and Corrections Division of the American Society of Criminology.

Bradley D. Edwards is Associate Professor in the Department of Criminal Justice & Criminology at East Tennessee State University, where he teaches classes primarily related to policy analysis. His previous publications include the areas of policing, corrections, ethics, corporate misconduct, and rural crime. He has also served as the author or co-author on several previous Routledge books. These include Introduction to Criminal Justice, which is currently in its 10th edition, and Justice, Crime, and Ethics, which is in its 11th edition.