G. Larry Mays, PhD, is Regents Professor Emeritus of Criminal Justice at New Mexico State University, Las Cruces. Mays is author or editor of 18 books and nearly 100 scholarly articles, book chapters, encyclopedia entries, and practitioner publications.

Rick Ruddell, PhD, is Law Foundation of Saskatchewan Chair in Police Studies and faculty in the Department of Justice Studies at the University of Regina, Saskatchewan, Canada. Ruddell received his doctorate in criminology and criminal justice at the University of Missouri, St. Louis, and his research has focused upon policing, criminal justice policy, and juvenile justice.