Margie E. Lachman is an American psychologist. She is the Minnie and Harold Fierman Professor of Psychology at Brandeis University, director of the Lifespan Developmental Psychology Lab and the director of the Boston Roybal Center for Active Lifestyle Interventions. She was editor of the Journal of Gerontology: Psychological Sciences (2000-2003), and has edited two volumes on midlife development. She is a fellow of the American Psychological Association, Division 20 and the Gerontological Society of America. Lachman's research is in the area of lifespan development with a focus on midlife and later life. Her current work is aimed at identifying psychosocial (e.g., sense of control) and behavioral (e.g., physical exercise) factors that can protect against, minimize, or compensate for declin