Schizotypal Personality Questionnaire: New sources of validity evidence in college students

  1. Fonseca-Pedrero, E. 12
  2. Fumero, A. 3
  3. Paino, M. 14
  4. de Miguel, A. 3
  5. Ortuño-Sierra, J. 2
  6. Lemos-Giráldez, S. 14
  7. Muñiz, J. 14
  1. 1 Centro de Investigacion Biomedica en Red de Salud Mental
    info

    Centro de Investigacion Biomedica en Red de Salud Mental

    Madrid, España

    ROR https://ror.org/009byq155

  2. 2 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  3. 3 Universidad de La Laguna
    info

    Universidad de La Laguna

    San Cristobal de La Laguna, España

    ROR https://ror.org/01r9z8p25

  4. 4 Universidad de Oviedo
    info

    Universidad de Oviedo

    Oviedo, España

    ROR https://ror.org/006gksa02

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Revista:
Psychiatry Research

ISSN: 0165-1781

Año de publicación: 2014

Volumen: 219

Número: 1

Páginas: 214-220

Tipo: Artículo

DOI: 10.1016/J.PSYCHRES.2014.04.054 SCOPUS: 2-s2.0-84902549479 WoS: WOS:000339143700028 GOOGLE SCHOLAR

Otras publicaciones en: Psychiatry Research

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Resumen

Schizotypal traits represent the behavioral expression of vulnerability to psychosis in general population. Among the most widely used measurement instruments, we could find the Schizotypal Personality Questionnaire (SPQ) (Raine, 1991). However, some aspects of its psychometric quality have yet to be analyzed. The main goal of the present study was to gather new sources of validity evidence of the SPQ scores in non-clinical young adults. The final sample was made up of 1123 college students (M=20.3 years; S.D.=2.6). The study of the internal structure using exploratory factor analysis revealed that SPQ items were grouped in a theoretical structure of seven second-order factors. Confirmatory factor analyses showed that the four-factor model (Paranoid) displayed better goodness-of-fit indices than the other hypothetical dimensional models tested. More complex measurement models, such as those tested using second-order confirmatory factor analyses and Exploratory Structural Equation Modeling, also showed adequate goodness-of-fit indices. The reliability of the SPQ scores ranged from 0.80 to 0.91. A total of 11 items showed differential functioning by gender. Advances in psychosis phenotype measurement open up new horizons to understand the structure and content of schizotypy. © 2014 Elsevier Ireland Ltd.