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PLoS One. 2013 Dec 12;8(12):e82041. doi: 10.1371/journal.pone.0082041. eCollection 2013.

Testing measurement invariance of the schizotypal personality questionnaire-brief scores across Spanish and Swiss adolescents.

Author information

  • 1Department of Educational Sciences, University of La Rioja, La Rioja, Spain.
  • 2Adolescence Clinical Psychology Research Unit, Faculty of Psychology and Educational Sciences, University of Geneva, Geneva, Switzerland ; Office Médico-Pédagogique Research Unit, Department of Psychiatry, University of Geneva School of Medicine, Geneva, Switzerland.
  • 3Center for Biomedical Research in the Mental Health Network (CIBERSAM), Madrid, Spain ; Department of Psychology, University of Oviedo, Oviedo, Spain.
  • 4Office Médico-Pédagogique Research Unit, Department of Psychiatry, University of Geneva School of Medicine, Geneva, Switzerland.
  • 5Department of Educational Sciences, University of La Rioja, La Rioja, Spain ; Center for Biomedical Research in the Mental Health Network (CIBERSAM), Madrid, Spain.
  • 6Adolescence Clinical Psychology Research Unit, Faculty of Psychology and Educational Sciences, University of Geneva, Geneva, Switzerland ; Office Médico-Pédagogique Research Unit, Department of Psychiatry, University of Geneva School of Medicine, Geneva, Switzerland ; Research Department of Clinical, Educational and Health Psychology, University College London, London, United Kingdom.

Abstract

BACKGROUND:

Schizotypy is a complex construct intimately related to psychosis. Empirical evidence indicates that participants with high scores on schizotypal self-report are at a heightened risk for the later development of psychotic disorders. Schizotypal experiences represent the behavioural expression of liability for psychotic disorders. Previous factorial studies have shown that schizotypy is a multidimensional construct similar to that found in patients with schizophrenia. Specifically, using the Schizotypal Personality Questionnaire-Brief (SPQ-B), the three-dimensional model has been widely replicated. However, there has been no in-depth investigation of whether the dimensional structure underlying the SPQ-B scores is invariant across countries.

METHODS:

The main goal of this study was to examine the measurement invariance of the SPQ-B scores across Spanish and Swiss adolescents. The final sample was made up of 261 Spanish participants (51.7% men; M = 16.04 years) and 241 Swiss participants (52.3% men; M = 15.94 years).

RESULTS:

The results indicated that Raine et al.'s three-factor model presented adequate goodness-of-fit indices. Moreover, the results supported the measurement invariance (configural and partial strong invariance) of the SPQ-B scores across the two samples. Spanish participants scored higher on Interpersonal dimension than Swiss when latent means were compared.

DISCUSSION:

The study of measurement equivalence across countries provides preliminary evidence for the Raine et al.'s three-factor model and of the cross-cultural validity of the SPQ-B scores in adolescent population. Future studies should continue to examine the measurement invariance of the schizotypy and psychosis-risk syndromes across cultures.

PMID:
24349180
[PubMed - indexed for MEDLINE]
PMCID:
PMC3861321
Free PMC Article
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