Dr John C. Gibbs, PhD (Harvard University, 1972), is a professor of developmental psychology at The Ohio State University, USA. He has been a member of the State of Ohio Governor's Council on Juvenile Justice and is a faculty associate of The Ohio State University Criminal Justice Research Center. His work has focused on developmental theory, assessment of social cognition and moral judgment development, and interventions with conduct-disordered adolescents. A coauthor on the second edition of Aggression Replacement Training (Research Press, 1998), he is first author of The EQUIP Program (1995) and coauthor of The EQUIP Program Implementation Guide (2001). His other books include EQUIP for Educators (Research Press, 2005), Moral Development and Reality: Beyond the Theories of Kohlber, Hoffman, and Haidt (3rd ed.; Oxford University Press, in press) and Moral Maturity: Measuring the Development of Sociomoral Reflection (Erlbaum/Taylor & Francis, 1992). Granville Bud Potter, M.

Ed. (Bowling Green State University, 1975) is currently the executive director of the Franklin County (Ohio, USA) Community-Based Correction Facility. While serving in this capacity, he has successfully adapted the EQUIP program to serve adult offenders. Bud is also self- employed as a consultant to correctional and educational agencies. He retired from the Ohio Department of Youth Services in 1998 after 30 years working within institutions and parole divisions. As a consultant, he has worked with agencies in 21 of the United States and 2 states in Australia. He is the past president of the Ohio Correctional and Court Services Association. Much of his professional experience has involved the use of a peer-group modality.

Dr Arnold P. Goldstein, Ph.D. (1933-2002), was Professor of Psychology and Education at Syracuse University , USA as well as Founder and Director of the Syracuse University Center for Research on Aggression. He authored over 60 books and more than 100 articles on aggression, prosocial skills training, and juvenile delinquency. He also served as Director of the New York State Task Force on Juvenile Gangs. Dr. Goldstein received many prestigious awards including the Career Achievement Award from the American Psychological Association's Commitee on Children, Youth, and Families; and the Senior Scientist Award from APA's School Psychology Division.