26 schizophrenic patients (40 to 55 yr.), 21 non-schizophrenic patients (40 to 55 yr.), and 18 staff controls (25 to 40 yr.) from the same unit of a public psychiatric hospital were questioned about hand preference. Schizophrenics showed somewhat more confusion about hand preference than other subjects, but otherwise patterns of hand preference did not differ for the three groups. The inclusion of schizophrenics among those groups identified with laterality disturbances, then, was not supported.
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Otto F. Wahl (1976) studied this question.
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