Differing lateralized perceptual-motor patterns in schizophrenic and non-psychotic children.

A neuropsychological assessment stressing lateralized perceptual-motor and cognitive abilities was administered to two groups of hospitalized child and adolescent psychiatric patients, 25 schizophrenics and 25 non-psychotics. The findings included an increased incidence of crossed eye-hand dominance in schizophrenics, poorer tactile sensory function in the right hands of schizophrenics than in the left hands, and lower Vocabulary and Similarities WISC subtest scores than Block Design and Object Assembly scores for schizophrenics. Right-left confusion was associated with finger agnosia for schizophrenics. The results supported the hypothesis that there may be left-hemisphere dysfunction in schizophrenia; however, no single pattern of dysfunction was apparent.