Dr. Sarah Kleiman specializes in the assessment and treatment of Posttraumatic Stress Disorder (PTSD) and is actively engaged in research, clinical work, and teaching. As a research psychologist at VA Boston, she is involved in numerous longitudinal and PTSD treatment studies being conducted at the National Center for PTSD. As an instructor at Harvard University, she has taught undergraduate and graduate courses (primarily on trauma and PTSD) for eight semesters. Dr. Kleiman is also a research consultant on PTSD studies sponsored by non-profit organizations, pharmaceutical companies, and the Department of Defense, and is a Clinical Investigator for the MDMA-assisted psychotherapy Phase 3 clinical trial sponsored by the Multidisciplinary Association for Psychedelic Studies.