Brief assessment of schizotypy: Developing short forms of the Wisconsin Schizotypy Scales |
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| Affiliation: | 1. Department of Educational Research Methodology, University of North Carolina at Greensboro, NC, United States;2. Department of Psychology, University of North Carolina at Greensboro, NC, United States;3. Learning Research Institute and Department of Psychology, California State University, San Bernardino, CA, United States;4. Department of Psychology, University of Nebraska at Omaha, NE, United States;1. Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN, United States;2. Department of Psychology, University of North Carolina, Chapel Hill, NC, United States;3. Roudebush VA Medical Center, Indianapolis, IN, United States;4. Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, United States;1. Division of Psychology, School of Social Sciences, Nottingham Trent University, Burton Street, Nottingham NG1 4BU, UK;2. King׳s College London, Department of Psychology, Institute of Psychiatry, London, UK;3. NIHR Biomedical Research Centre for Mental Health, South London and Maudsley NHS Foundation Trust, London, UK;4. Department of Psychology, University of Sheffield, Sheffield, UK;1. Department of Educational Sciences, University of La Rioja, Spain;2. Prevention Program for Psychosis (P3), Spain;3. Institute of Psychology, University of Lausanne, Switzerland;4. Research Department of Clinical, Educational and Health Psychology, University College London, UK;5. Department of Psychology, Institute of Psychiatry, Psychology & Neuroscience, King''s College London, UK;6. Center of Liaison Psychiatry and Psychosomatics, University Hospital, University of Cagliari, Italy, and Centro Medico Genneruxi, Cagliari, Italy |
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| Abstract: | The Wisconsin Schizotypy Scales—the Perceptual Aberration, Magical Ideation, Physical Anhedonia, and Revised Social Anhedonia Scales—have been used extensively since their development in the 1970s and 1980s. Based on psychometric analyses using item response theory, the present work presents 15-item short forms of each scale. In addition to being briefer, the short forms omit items with high differential item functioning. Based on data from a sample of young adults (n = 1144), the short forms have strong internal consistency, and they mirror effects found for the longer scales. They thus appear to be a good option for researchers interested in the brief assessment of schizotypic traits. The items are listed in an Appendix A. |
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