Onno van der Hart, Ph.D., is Professor of Psychopathology of Chronic Traumatization, Department of Clinical and Health Psychology, Utrecht University, Utrecht, the Netherlands, and a psychologist / psychotherapist at the Sinai Center for Mental Health, Amsterdam, the Netherlands. He is a Past President of the International Society for Traumatic Stress Studies (ISTSS). He was recently honored as an Officer of the Order of Orange-Nassau, Netherlands. Ellert R. S. Nijenhuis, Ph.D., is a clinical psychologist, psychotherapist, and researcher. He is affiliated with Mental Health Care Drenthe, The Netherlands and collaborates with various Universities. He is a former director of the Executive Council of the International Society for the Study of Dissociation (ISSD). Kathy Steele, MN, CS, is Clinical Director of Metropolitan Counseling Services, a training and low cost psychotherapy center, and is in private practice with Metropolitan Psychotherapy Associates in Atlanta, Georgia. She serves on the Board of the International Society for the Study of Traumatic Stress, and is a former member of the Executive Council of the International Society for the Study of Dissociation.