Abstract
To investigate the cognitive functioning of children and adolescents with Schizophrenia Spectrum disorders and Psychosis Not Otherwise Specified, 22 child and adolescent psychiatric inpatients and day-hospital patients at a state psychiatric hospital with Schizophrenia Spectrum disorders, 30 with Psychosis Not Otherwise Specified, and 130 with other psychiatric disorders, ages 8 to 17 years, were administered the Wechsler Intelligence Scale for Children–III for psychological assessment at admission. The Performance IQs of the ADHD and the Conduct Disorder and Oppositional Defiant Disorder groups were significantly higher than those of the Schizophrenia Spectrum and the Psychosis Not Otherwise Specified groups, and the Full Scale IQs of the Conduct Disorder and Oppositional Defiant Disorder group were significantly higher than those of the Schizophrenia Spectrum group and the Psychosis Not Otherwise Specified group. The Coding scores of the ADHD group were significantly higher than those of the Schizophrenia Spectrum, the Psychosis Not Otherwise Specified, and the Bipolar Disorder groups. There was a significant negative correlation between age and Digit Span for the Schizophrenia Spectrum disorders group.
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