Programs that are staffed by physicians who specialize in the prevention, diagnosis and treatment of mental, emotional and behavior disorders. Psychiatrists have specialized training, knowledge and skills which enable them to explore the biologic, psychological and social components of illnesses; and are licensed to prescribe medication, conduct physical examinations, order and interpret laboratory tests and EEGs and order brain imaging studies such as CT, CAT, MRI and PET scans as well as evaluate and treat psychological and interpersonal problems and provide continuing psychiatric care.