After earning a B.S. degree from Villanova University, Dr. DiGiuseppe received his Ph.D. from Hofstra University in 1975. He completed a postdoctoral fellowship at AEI in 1977. In 1980 he became the Institute’s Director of Professional Education, a position he has held since then. He is also a Core Faculty Trainer for Albert Ellis Institute. He has trained hundreds of therapists in Rational Emotive Behavior Therapy (REBT) throughout the world. He received the Jack Krasner Early Career Contribution Award from APA’s Division of Psychotherapy (29) and was elected a fellow of the American Psychological Association’s divisions of Psychotherapy, Clinical, School, and Family Psychology.

Dr. DiGiuseppe joined the faculty of St. John’s University in 1987 and is presently professor and chair of the psychology department. He has been very active in the Association for Behavioral and Cognitive Therapies (ABCT). Dr. DiGiuseppe helped develop the Diplomate in Behavioral Psychology (1986-87) and served on the Diplomate board. He was associate program chair (1995), and program chair (1996) for ABCT. He has served on the editorial board of ABCT’s Cognitive and Behavioral Practice. He served as ABCT convention coordinator (1997 – 2000) and associate convener for the 2001 World Congress for Behavior Therapy. Dr. DiGiuseppe developed and promoted popular convention formats such as the Master Clinician Series and the World Rounds demonstrations. Dr. DiGiuseppe was elected ABCT representative-at-large in 2001 and recently served as President of the organization.

Dr. DiGiuseppe has contributed to the scientific and clinical literature with six books, more than 120 chapters and articles, and hundreds of conference presentations. He is co-authored two psychological tests, The Anger Disorders Scale (for Adults, and the Anger Regulation and Expression Scale (for children and adolescents). He has co-authored several books on REBT including the Practitioner’s Guide to Rational Emotive Behavior Therapy, which is undergoing its third edition. His present scholarship focuses on clinical aspects of anger and REBT, on which he lectures widely.