Brief assessment of schizotypal traits: A multinational study

Eduardo Fonseca-Pedrero, Javier Ortuño-Sierra, Beatriz Lucas-Molina, Martin Debbané, Raymond C K Chan, David C Cicero, Lisa C Zhang, Colleen Brenner, Emma Barkus, Richard J Linscott, Thomas Kwapil, Neus Barrantes-Vidal, Alex Cohen, Adrian Raine, Michael T Compton, Erin B Tone, Julie Suhr, Julio Bobes, Axit Fumero, Stella GiakoumakiIoannis Tsaousis, Antonio Preti, Michael Chmielewski, Julien Laloyaux, Anwar Mechri, Mohamed Aymen Lahmar, Viviana Wuthrich, Frank Larøi, Johanna C Badcock, Assen Jablensky, David Barron, Viren Swami, Ulrich S Tran, Martin Voracek

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

The Schizotypal Personality Questionnaire-Brief (SPQ-B) was developed with the aim of examining variations in healthy trait schizotypy, as well as latent vulnerability to psychotic-spectrum disorders. No previous study has studied the cross-cultural validity of the SPQ-B in a large cross-national sample. The main goal of the present study was to analyze the reliability and the internal structure of SPQ-B scores in a multinational sample of 28,426 participants recruited from 14 countries. The mean age was 22.63years (SD=7.08; range 16-68years), 37.7% (n=10,711) were men. The omega coefficients were high, ranging from 0.86 to 0.92 for the total sample. Confirmatory factor analysis revealed that SPQ-B items were grouped either in a theoretical structure of three first-order factors (Cognitive-Perceptual, Interpersonal, and Disorganized) or in a bifactor model (three first-order factors plus a general factor of schizotypal personality). In addition, the results supported configural but not strong measurement invariance of SPQ-B scores across samples. These findings provide new information about the factor structure of schizotypal personality, and support the validity and utility of the SPQ-B, a brief and easy tool for assessing self-reported schizotypal traits, in cross-national research. Theoretical and clinical implications for diagnostic systems, psychosis models, and cross-national mental health strategies are derived from these results.

Original languageEnglish
Pages (from-to)182-191
Number of pages10
JournalSchizophrenia Research
Volume197
Early online date4 Nov 2017
DOIs
Publication statusPublished - 1 Jul 2018
Externally publishedYes

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