Ronald C. KESSLER Ronald Kessler is a Professor of Health Care Policy at Harvard Medical School. His research deals broadly with the social determinants of mental health and illness as studied from an epidemiological perspective. He is the author of over 500 publications and the recipient of many awards for his research, including Senior Scientist and MERIT awards from the National Institute of Mental Health. Kessler has been rated by the ISI as the most widely cited researcher in the field of psychiatry in the world for each of the last ten years. He is a member of the Institute of Medicine and in 2008 was the first psychiatric epidemiologist ever elected to membership in the US National Academies of Science. Kessler is the Principal Investigator of the U.S. National Comorbidity Survey, the first nationally representative survey of the prevalence and correlates of mental disorders in the US ( He is also the Director of the World Health Organization World Mental Health Survey Initiative, a series of comparative community epidemiological surveys of the prevalence of mental disorders, patterns of help-seeking, and barriers to treatment of these disorders in 28 countries around the world ( He is also the Director of the Hurricane Katrina Community Advisory Group ( In addition to his epidemiological studies, Kessler is involved in evaluating a number of innovative programs for the prevention and treatment of mental illness in high-risk segments of the population. Finally, he is the PI of the Harvard Medical School site of a major research program funded by the US Army and the National Institute of Mental Health to study risk and protective factors for suicide among Army personnel.