Thought disorder, perceptual aberrations, and schizotypy

Author(s): Levy, D. L., Lenzenweger, M. F., Holzman, P. S.

Journal/Book: J Abnormal Psychol. 1996; 105: 750 First St NE, Washington, DC 20002-4242. Amer Psychological Assoc. 469-473.

Abstract: Empirical links between schizophrenia and schizotypic psychopathology were examined. The Perceptual Aberration Scale(PerAb; L. J. Chapman, J. O. Chapman, & M. L. Raulin, 1978) was used to identify putative schizotypic individuals and a contrast group of nonschizotypic controls. The Thought Disorder Index (TDI; M. J. Coleman et al., 1993) was used to quantify and classify thought disorder in these individuals. High PerAb participants, selected for having an increased number of self-reported perceptual and body image aberrations, showed an elevation in the amount and frequency of thought disorder as well as an increased number of idiosyncratic verbalizations. This supports the hypothesis that psychometrically identified schizotypic individuals display thought disorder similar to that shown by schizophrenic patients and some of their I st-degree relatives, suggesting that there is a relation between schizotypic psychopathology, as tapped by the PerAb scale, and clinical schizophrenia.

Note: Article MJ Coleman, Mclean Hosp, Psychol Res Lab, 115 Mill St, Belmont, MA 02178 USA

Keyword(s): SCHIZOPHRENIA

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