Joanne H. Twombly, MSW, LICSW is a psychotherapist in private practice in Arlington, Massachusetts. She has over 30 years of experience working with Complex PTSD and Dissociative Disorders and provides trainings and consultation.

She has written chapters on EMDR and Dissociative Disorders, EMDR and Internal Family Systems, and on working with Perpetrator Introjects. Her book “Trauma and Dissociation Informed Internal Family Systems: How to Successfully Treat Complex PTSD, and Dissociative Disorders” (2023) is the first book to integrate Internal Family Systems with knowledge from the trauma and dissociation field.

Her commitment to providing clients with healing and has resulted in her becoming an EMDR Consultant and a Trauma and Recovery HAP Facilitator, Internal Family Systems Certified, and an American Society for Clinical Hypnosis Consultant.

She is a past president of the New England Society of Trauma and Dissociation, served on various ISSTD committees and on the board. She received ISSTD's Distinguished Achievement Award and is an ISSTD Fellow.

Dr. Chefetz is a psychiatrist in private practice in Washington, D.C.

He was President of the International Society for the Study of Trauma and Dissociation (ISSTD) from 2002-2003, and is a Distinguished Visiting Lecturer at the William Alanson White Institute of Psychiatry, Psychoanalysis, and Psychology. He is a faculty member at the Washington School of Psychiatry, the Institute of Contemporary Psychotherapy & Psychoanalysis, and the Washington Baltimore Center for Psychoanalysis. . He is a Certified Consultant at the American Society of Clinical Hypnosis and is trained in Level I and II EMDR.

Dr. Chefetz was editor of “Dissociative Disorders: An Expanding Window into the Psychobiology of Mind” for the Psychiatric Clinics of North America, March 2006, “Neuroscientific and Therapeutic Advances in Dissociative Disorders,” Psychiatric Annals, August 2005, and “Multimodal Treatment of Complex Dissociative Disorders,” Psychoanalytic Inquiry, 20:2, 2000, as well as numerous journal articles on psychodynamic and psychoanalytic perspectives on trauma and dissociation. In 2015 he published Intensive Psychotherapy for Persistent Dissociative Process: The Fear of Feeling Real, with W.W. Norton, in their Interpersonal Neurobiology series.

His website is HERE.