Abstract
The present study assessed the construct validity of the Multidimensional Schizotypy Scale (MSS). Specifically, it assessed the associations of the MSS positive, negative, and disorganized schizotypy subscales with interview-rated symptoms and impairment in 177 young adults. As hypothesized, the MSS positive schizotypy subscale was associated with interview-rated positive symptoms, and schizotypal and paranoid personality traits. Negative schizotypy was associated with interview-rated negative symptoms, and schizotypal and schizoid traits, and elevated rates of schizophrenia-spectrum personality disorders. Disorganized schizotypy was associated with disorganized symptoms and attentional deficits. All three subscales were associated with impaired functioning. This was the first study to evaluate the validity of the MSS using interview measures. The findings indicate that the schizotypy dimensions are associated with unique patterns of symptoms and impairment, and support the validity of the MSS.
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