Schizotypal dimensions in normals and schizophrenic patients: a comparison with other clinical samples.
Schizotypy is usually referred to as a "liability" to schizophrenia, but it could also be more generally referred to as nonspecific "psychosis-proneness". This study examined the structure of schizotypy in a normal sample and in a sample of schizophrenics through the administration of the Schizotypal Personality Questionnaire (SPQ). Within a "fully dimensional" approach to psychiatric disorders, this study also compared SPQ scores in clinical samples of subjects with bipolar, unipolar and obsessive-compulsive (OCD) disorders. The results suggested that the disorganized three-factor model, Cognitive-Perceptual, Interpersonal Deficits and Disorganization, underlies individual differences across samples of normal and schizophrenic patients. Furthermore, the SPQ measures discriminated schizophrenia and bipolars from major depression but not from OCD.
Rossi
Alessandro
A
Department of Experimental Medicine, University of L'Aquila, Coppito II, 67100 L'Aquila, Italy. rossi.aq@tin.it
Daneluzzo
Enrico
E
D000328:Adult; D001714:Bipolar Disorder / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D003865:Major Depressive Disorder / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D009771:Obsessive-Compulsive Disorder / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D010555:Personality Inventory; D012559:Schizophrenia / Q000175:diagnosis* / Q000453:epidemiology; D012565:Schizophrenic Psychology; D012569:Schizotypal Personality Disorder / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology; D012720:Severity of Illness Index