Roger P. Greenberg, PhD, is Professor and Head of the Division of Clinical Psychology in the Department of Psychiatry at the State University of New York. He also has an active private practice. Dr. Greenberg received his doctorate in clinical psychology from Syracuse University. His other books include The Scientific Credibility of Freud's Theories and Therapy (with Seymour Fisher) and The Limits of Biological Treatments for Psychological Distress: Comparisons with Psychotherapy and Placebo.