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Psychiatry Res. 2007 Aug 30;152(2-3):103-12. Epub 2007 Apr 16.

Taxonic structure of schizotypal personality in nonclinical subjects: Issues of replicability and age consistency.

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  • 1Vita-Salute San Raffaele University, Milan, Italy.


To assess the replicability and age consistency of the taxonic structure and base-rate of schizotypy, 803 university students (21.9 years) and 929 high school students (16.4 years) were administered three self-report measures of schizotypal personality. The two groups came from the same town and were matched on gender. MAXCOV analyses were consistent with a low base-rate taxon of approximately 10% only in the university student group; in the younger group, the three schizotypal personality measures did not show clear evidence of taxonicity. These findings support the hypothesis of the taxonic structure of schizotypal personality in adult subjects, but they raise questions concerning the identification of schizotypy in younger samples.

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