Trained as a child, adolescent, and adult psychiatrist at Yale University and George Washington University, Frank W. Putnam, MD, is a leading authority on dissociative disorders. He is Chief of Developmental Traumatology at the National Institute of Mental Health and directs clinical research on the effects of maltreatment, community violence, and other types of trauma across the lifespan. He is the author of "Diagnosis and Treatment of Multiple Personality Disorder,"