Melissa S. Wattenberg, PhD, is a clinical psychologist, co-developed PCGT, and supervises the Psychosocial Rehabilitation & Recovery Center at VA Boston Healthcare. She is assistant professor of psychiatry, Boston University.

Daniel Lee Gross, LICSW, is a clinical social worker at the Veterans Administration Hospital and in private practice in Seattle. He is associate professor at Seattle University's Master of Social Work program.

Barbara L. Niles, PhD, is a psychologist at VA Boston National Center for PTSD and assistant professor of psychiatry, Boston University, investigates impact of psychotherapy and health enhancement for veterans with PTSD.

William S. Unger, PhD, is a psychologist in the Trauma Recovery Services at Providence VA Medical Center and associate clinical professor in the Department of Psychiatry and Human Behavior, Brown University. He served as the chief of the PTSD Program for 16 years.

M. Tracie Shea, PhD, is a psychologist, Trauma Recovery Services, Providence VA, and professor, Department of Psychiatry and Human Behavior, Brown University, developed PCGT, and has played a key role in many clinical trials of PTSD psychosocial treatments.