Neurological differences between paranoid and nonparanoid schizophrenia: part I. sensory-motor lateralization

Sensory-motor lateralization was studied prospectively in a consecutive sample of male chronic schizophrenic patients. The sample was divided into paranoid (N = 27) and nonparanoid (N = 53) subjects according to the Tsuang-Winokur criteria. Significantly more left handedness was found in the paranoid group, suggesting the left hemispheric dysfunction may be important in the etiology of paranoid schizophrenia.