Use of a standardized psychiatric interview in mentally handicapped patients.

This study attempted to assess the applicability of the Clinical Interview Schedule (Goldberg et al., 1970) to mentally handicapped patients in a hospital. Twenty-seven patients were rated simultaneously by three raters. Of the 31 items assessed for reliability, 11 were completely satisfactory, 8 were satisfactory, 6 unsatisfactory and 6 'not proven'. Ratings made by all raters for overall severity of psychiatric illness correlated significantly with similar ratings made by the consultants responsible for the patients.