text: This sample consisted of all those patients who during the followup period were either diagnosed schizophrenic by ward psychiatrists or met the criteria for schizophrenia in any one of the five diagnostic systems we applied: RDC, St. Louis criteria, New Haven Schizophrenia Index (NHSI) (Astrachan et al. 1972), Taylor-Abrams criteria (Taylor, Abrams, and Gaztanaga 1975), or the World Health Organization Flexible 6 (WHO-6) (Carpenter, Strauss, and Bartko 1973).