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  • Title: Factor structure and measurement invariance of the Wisconsin Schizotypy scales across gender and age.
    Author: Fonseca-Pedrero E, Paino M, Lemos-Giráldez S, Sierra-Baigrie S, Muñiz J.
    Journal: Span J Psychol; 2010 Nov; 13(2):941-50. PubMed ID: 20977041.
    Abstract:
    The Wisconsin Schizotypy Scales are among the most widely used instruments for the assessment of psychosis proneness. The main goal of the present work was to study the dimensional structure underlying the Revised Physical Anhedonia Scale (RPhA), the Revised Social Anhedonia Scale (RSAS), the Magical Ideation Scale (MIS) and the Perceptual Aberration Scale (PAS). It was also explored whether the dimensions underlying these scales were invariant across gender and age. The sample was made up of 710 university students with a mean age of 19.8 years (SD = 1.9). The results showed that the dimensional structure of the Wisconsin scales was similar to that found in previous studies, displaying a Positive dimension and a Negative dimension, the Social Anhedonia Scale being related to both dimensions. Moreover, the factor structure of the schizotypy scales was found to be invariant across participants' gender and age.
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