Reliability and validity of two Likert versions of the Schizotypal Personality Questionnaire (SPQ)

Viviana Wuthrich*, Timothy C. Bates

*Corresponding author for this work

    Research output: Contribution to journalArticle

    70 Citations (Scopus)

    Abstract

    Two alternative formats of the Schizotypal Personality Questionnaire (SPQ: Raine, 1991) were compared to examine if a Likert format in which SPQ items could be interleaved with other personality measures would promote reporting of symptoms. The Likert versions correlated highly with the standard SPQ (0.88-0.94) and showed better internal reliability compared to the standard version in which three subscales had Cronbach α < 0.70. The Likert versions also identified additional high scorers missed by the standard version and so may be desirable when testing relatives of patients with schizophrenia. Norms for the new version administered to 834 subjects are provided.

    Original languageEnglish
    Pages (from-to)1543-1548
    Number of pages6
    JournalPersonality and Individual Differences
    Volume38
    Issue number7
    DOIs
    Publication statusPublished - May 2005

    Keywords

    • Schizotypal Personality Disorder
    • Schizotypal Personality Questionnaire
    • Schizotypy
    • SPQ
    • Validity

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