An evaluation of the Circadian Type Questionnaire.

Abstract

This study evaluates the psychometric properties and assesses the test-retest reliability and longer-term stability of scores on the Circadian Type Questionnaire (CTQ) of Folkard et al. (1979) in a sample of 445 students. The scales were found to lack internal consistency and the factor structure originally proposed was not replicated. Cultural variation in… (More)
DOI: 10.1080/00140139508925109

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