Elizabeth Simpson, MDElizabeth B. Simpson, MD, a clinical instructor in psychiatry at the Harvard Medical School, is the Director of the Dialectical Behavior Therapy program at Massachusetts Mental Health Center (MMHC) in Boston. The MMHC offers partial hospital, outpatient, and residential DBT services to chronically mentally ill people with borderline personality disorder. Previously, Dr. Simpson created and ran the Women’s Partial Program at Butler Hospital in Providence, RI, an innovative 5-day DBT program for women with personality disorders and other treatment resistant conditions. Dr. Simpson’s depth and breadth of experience brings a useful perspective to bear on the clinical problems behaviorally disordered individuals present to mental health systems.