Fonseca-Pedrero Eduardo, Paino Mercedes, Ortuño-Sierra Javier, Lemos-Giráldez Serafín, Muñiz José
Department of Educational Sciences, University of La Rioja, Spain; Center for Biomedical Research in the Mental Health Network (CIBERSAM), Spain.
Department of Psychology, University of Oviedo, Spain; Center for Biomedical Research in the Mental Health Network (CIBERSAM), Spain.
Compr Psychiatry. 2014 Apr;55(3):699-707. doi: 10.1016/j.comppsych.2013.09.013. Epub 2013 Oct 26.
The Wisconsin Schizotypy Scales are one of the most used measuring instruments for the assessment of psychometric risk for psychosis. The main goal of the present study was to analyze the reliability of the scores and to provide new sources of validity evidence for the brief version of the Magical Ideation Scale (MIS-B) and the Perceptual Aberration Scale (PAS-B). The final sample was comprised of a total of 1349 university students divided into two subsamples (n1=710; M=19.8 years; n2=639; M=21.2 years). Results show that both measurement instruments have adequate psychometric properties under Classical Test Theory and Item Response Theory. Internal structure analysis of MIS-B and PAS-B, through exploratory and confirmatory factor analysis, yielded an essentially one-dimensional solution. Cronbach's alpha coefficient for the total score of MIS-B ranged between 0.86 and 0.87, whereas for the PAS-B it ranged between 0.78 and 0.89. A total of 5 items showed a differential functioning for sex. The results indicate that the MIS-B and PAS-B are brief measurement instruments with adequate psychometric properties for the assessment of the positive dimension of the psychosis phenotype and could be used as screening tools in the detection of individuals at risk for psychosis in the general population.
威斯康星分裂型人格量表是评估精神病心理测量风险最常用的测量工具之一。本研究的主要目的是分析分数的可靠性，并为简明版的神奇观念量表（MIS-B）和知觉畸变量表（PAS-B）提供新的效度证据来源。最终样本共有1349名大学生，分为两个子样本（n1 = 710；平均年龄19.8岁；n2 = 639；平均年龄21.2岁）。结果表明，在经典测验理论和项目反应理论下，这两种测量工具都具有足够的心理测量学特性。通过探索性和验证性因素分析对MIS-B和PAS-B进行内部结构分析，得出了基本为一维的解决方案。MIS-B总分的克朗巴哈α系数在0.86至0.87之间，而PAS-B的系数在0.78至0.89之间。共有5个项目在性别上表现出差异功能。结果表明，MIS-B和PAS-B是用于评估精神病表型阳性维度的具有足够心理测量学特性的简短测量工具，可作为筛查工具用于检测普通人群中有精神病风险的个体。
