The Columbia University Department of Psychiatry is one of the largest in the country in terms of faculty size as well as state, federal, and foundation research support. We have extraordinary clinical, educational, and research resources. Our faculty includes over 400 psychiatrists, psychologists, social workers, nurses, and neurobehavioral scientists. Clinical facilities and laboratories of the Psychiatry Department are located in, and affiliated with, a large number of institutions and health care systems. These include NewYork-Presbyterian Hospital, Columbia University Irving Medical Center, the New York State Psychiatric Institute, the New York State Office of Mental Health, the Washington Heights Community Services, and the Research Foundation for Mental Hygiene.The New York State Psychiatric Institute (NYSPI), established in 1895, was one of the first institutions in the United States to integrate teaching, research, and therapeutic approaches to the care of patients with mental illnesses. Since 1925, NYSPI has been affiliated with NewYork-Presbyterian Hospital and the Columbia University Irving Medical Center.