Catherine Classen

San Francisco, California

Catherine Classen, PhD, is Clinical Professor of Psychology and Director of the University of California San Francisco Division of Trauma Recovery Services. Previously she was Professor of Psychiatry at the University of Toronto, Academic Leader of the Trauma Therapy Program at Women’s College Hospital in Toronto and a senior scientist in the Department of Psychiatry and Behavioral Sciences at Stanford School of Medicine. She is a clinician, researcher and educator who has been working in the field of psychological trauma for over 25 years. A primary focus of her research has been investigating psychotherapeutic interventions for survivors of chronic traumatization. She has numerous publications on interventions for complex trauma, the long-term effects of chronic traumatization, and on the principles and strategies for providing trauma-informed care. She has over 100 publications including three books. Her most recent book co-authored by Clark, Classen, Fourt, & Shetty, "Treating the trauma survivor: An essential guide to trauma-informed care," was published by Routledge in 2015. Along with numerous presentations and workshops on trauma and trauma-informed care, she co-authored an online course, "Posttraumatic Stress Disorder: A Primer for Primary Care Physicians," which is an accredited continuing medical education course. She is currently developing an e-learning course on trauma-informed care for providers, administrative staff and security personnel at Women's College Hospital. She is a Past-President (2006-07) and Fellow of the International Society for the Study of Trauma and Dissociation. She is also a certified sensorimotor psychotherapist.


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