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<p>Schizotypy refers to personality traits linked to an increased risk for schizophrenia-spectrum disorders (SSD). The Schizotypal Personality Questionnaire-Brief Revised (SPQ-BR) is a widely used 32-item self-report measure, but its psychometric properties in German-speaking populations are unexplored. This study comprised 738 individuals, including 33 with SSD, and 148 with other mental disorders. Participants (mean age: 38&#xa0;years, 77% female) completed an online survey that included the German version of the SPQ-BR (SPQ-BR-G) and additional measures to assess convergent and discriminant validity. Reliability, latent factor structure, and validity were assessed. The SPQ-BR-G demonstrated excellent internal consistency (α = 0.91), good convergent validity (r = 0.52–0.58), and discriminant validity (r &lt; 0.50) for the cognitive-perceptual and disorganized factors. Confirmatory factor analysis supported three- and four-factor solutions, while a single-factor model demonstrated poor fit. Subjective well-being was negatively associated with the SPQ-BR-G, after adjusting for sex, age, and education. Compared to the survey sample, SSD patients scored significantly higher on all factor levels and most items (p &lt; 0.05), with 35% ranking in the top SPQ-BR-G decile. In SSD patients, moderate to high correlations were observed between the negative (r = 0.86, p &lt; 0.001) and positive (r = 0.53, p &lt; 0.05) dimensions of the Positive and Negative Syndrome Scale and the SPQ-BR-G. The SPQ-BR-G shows robust psychometric properties, supporting its use in schizotypy research. Its validation enhances cross-cultural comparisons and may aid in early risk and biological risk factor identification for SSD.</p>

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Psychometric properties of the schizotypal personality questionnaire-brief revised (SPQ-BR) in a German-speaking sample

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年2月18日

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  • Vida Gajic,
  • Marie Fitzner,
  • Theresa Schulze,
  • Paul Klusmann,
  • Lyn Giemsa,
  • Phillip Grant,
  • Salome Becker,
  • Inge Maria Hahne,
  • Marco Zierhut,
  • Stephan Ripke,
  • Alice Braun,
  • Julia Kraft

摘要

Schizotypy refers to personality traits linked to an increased risk for schizophrenia-spectrum disorders (SSD). The Schizotypal Personality Questionnaire-Brief Revised (SPQ-BR) is a widely used 32-item self-report measure, but its psychometric properties in German-speaking populations are unexplored. This study comprised 738 individuals, including 33 with SSD, and 148 with other mental disorders. Participants (mean age: 38 years, 77% female) completed an online survey that included the German version of the SPQ-BR (SPQ-BR-G) and additional measures to assess convergent and discriminant validity. Reliability, latent factor structure, and validity were assessed. The SPQ-BR-G demonstrated excellent internal consistency (α = 0.91), good convergent validity (r = 0.52–0.58), and discriminant validity (r < 0.50) for the cognitive-perceptual and disorganized factors. Confirmatory factor analysis supported three- and four-factor solutions, while a single-factor model demonstrated poor fit. Subjective well-being was negatively associated with the SPQ-BR-G, after adjusting for sex, age, and education. Compared to the survey sample, SSD patients scored significantly higher on all factor levels and most items (p < 0.05), with 35% ranking in the top SPQ-BR-G decile. In SSD patients, moderate to high correlations were observed between the negative (r = 0.86, p < 0.001) and positive (r = 0.53, p < 0.05) dimensions of the Positive and Negative Syndrome Scale and the SPQ-BR-G. The SPQ-BR-G shows robust psychometric properties, supporting its use in schizotypy research. Its validation enhances cross-cultural comparisons and may aid in early risk and biological risk factor identification for SSD.