title: Schizotypal dimensions in normals and schizophrenic patients: a comparison with other clinical samples.
abstract: 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.
authors.affiliation: Department of Experimental Medicine, University of L'Aquila, Coppito II, 67100 L'Aquila, Italy. rossi.aq@tin.it
authors.forename: Alessandro
authors.initials: A
authors.lastname: Rossi
authors.forename: Enrico
authors.initials: E
authors.lastname: Daneluzzo
mesh_terms: 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