J. Scott Rutan, PhD, is a past president and Distinguished Fellow of the American Group Psychotherapy Association. He founded the Center for Group Psychotherapy at Massachusetts General Hospital and was a cofounder of the Boston Institute for Psychotherapy. Having left his long-time position on the faculty of Harvard Medical School, Dr. Rutan is now a senior faculty member at the Boston Institute for Psychotherapy.

Walter N. Stone, MD, is Professor Emeritus of Psychiatry at the University of Cincinnati College of Medicine. Currently, he is a clinical professor at the University of California, San Francisco. He is a Distinguished Fellow and past president of the American Group Psychotherapy Association, and past chair of the Group Psychotherapy Foundation. Dr. Stone's broad-ranging interests in group psychotherapy include the application of self psychology and dynamic treatment of chronically mentally ill persons. He has published more than 50 articles, book chapters, and books relevant to group training, dynamics, and psychotherapy, including Group Psychotherapy for People with Chronic Mental Illness.

Joseph J. Shay, PhD, is on the staff of the joint McLean Hospital/Massachusetts General Hospital training program and is an instructor in psychology in the Department of Psychiatry at Harvard Medical School. Formerly, he was the director of psychological services and training at a private treatment clinic in Cambridge, Massachusetts. Dr. Shay has published numerous articles and book chapters and has coedited, with Joan Wheelis, Odysseys in Psychotherapy and, with Lise Motherwell, Complex Dilemmas in Group Therapy.