Elevated levels of cognitive-perceptual deficits in individuals with a family history of schizophrenia spectrum disorders

Yaralian, Pauline S.; Raine, Adrian; Lencz, Todd; Hooley, Jill M.; Bihrle, Susan E.; Mills, Shari; Ventura, Joseph

« Previous Next »Schizophrenia Research
Volume 46, Issue 1 , Pages 57-63, 30 November 2000

Elevated levels of cognitive-perceptual deficits in individuals with a family history of schizophrenia spectrum disorders

Pauline S. Yaralian
- Department of Psychology, University of Southern California, Los Angeles, CA 90089-1061, USA
Adrian Raine
- Department of Psychology, University of Southern California, Los Angeles, CA 90089-1061, USA
- Corresponding author.
Todd Lencz
- Department of Research, Hillside Hospital (North Shore Long Island Jewish Health System), 75-59 263^rd St., Glen Oaks, NY 11004, USA
Jill M. Hooley
- Department of Psychology, Harvard University, Boston, MA 02138, USA
Susan E. Bihrle
- Department of Psychology, University of Southern California, Los Angeles, CA 90089-1061, USA
Shari Mills
- Department of Psychology, University of Southern California, Los Angeles, CA 90089-1061, USA
Joseph Ventura
- UCLA Department of Psychiatry and Biobehavioral Sciences, Los Angeles, CA 90090–6968, USA

Received 14 July 1999; accepted 30 November 1999.

Abstract

This study finds that the relatives of schizophrenics have elevated scores on the cognitive-

perceptual factor of the schizotypal personality questionnaire (SPQ), particularly for the ‘unusual perceptual experiences’ and ‘ideas of reference’ subscales. These results support recent findings by Kremen et al. (1998) and suggest that previous failures to demonstrate elevated scores on ‘positive’ symptoms of schizotypy may be a function of instrumentation.

Keywords: Cognitive-perceptual, Schizophrenia, Schizotypal personality disorder, SPQ