Michel Hersen (Ph.D., ABPP, State University of New York at Buffalo, 1966) is Professor and Dean of the School of Professional Psychology at Pacific University. He completed his post-doctoral training at the West Have VA(Yale University School of Medicine Program). He isPast President of the Association for Advancement of Behavior Therapy. He has coauthored and co-edited 146 books and has published 225 scientific journal articles. He is co-editor of several psychological journals, including Behavior Modification, Aggression & Violent Behavior: A Review Journal, Clinical Psychology Review, and