Same–different judgments in paranoid and schizophrenic patients: A laterality study.

12 normal, 12 paranoid, and 12 nonparanoid schizophrenic Ss were presented with arrays of stimuli to the left, right, or both hemispheres and told to say whether all the stimuli in the array were the same or different. Results fail to confirm the hypothesis that there is a dysfunction of hemispheric operation in paranoid or nonparanoid schizophrenia. There was, however, some evidence that paranoid patients scanned more than did nonparanoid or control Ss. (PsycINFO Database Record (c) 2010 APA, all rights reserved)