Dr. George Winokur became an assistant professor of psychiatry in 1955. He was promoted to associate professor in 1959 and full professor in 1966. Some of his responsibilities included running the residency training program and heading the inpatient service. Together with Drs. Eli Robins and Samuel Guze, Dr. Winokur developed a medical model approach to the teaching and practice of psychiatry. Dr. Winokur left the Department in 1971 to chair the Department of Psychiatry at the University of Iowa.