Jacques P. Barber, PhD, ABPP, is Professor and Dean of the Derner Institute of Advanced Psychological Studies at Adelphi University. He is also Emeritus Professor of Psychology in the Department of Psychiatry and in the Psychology Graduate Group at the University of Pennsylvania, where he was formerly Associate Director of the Center for Psychotherapy Research, and Adjunct Professor of Psychiatry at New York University School of Medicine. His research focuses on the outcome and process of psychodynamic and cognitive therapies for depression, panic disorder, posttraumatic stress disorder, substance dependence, and personality disorders. He has published more than 225 papers, chapters, and books in the field of psychotherapy and personality. With Richard F. Summers, Dr. Barber is coauthor of Psychodynamic Therapy: A Guide to Evidence-Based Practice and coeditor of Practicing Psychodynamic Therapy: A Casebook. Dr. Barber is past president of the Society for Psychotherapy Research and a recipient of its Distinguished Research Career Award.