Less is not always more: The case of the 36-item short form of the Zimbardo Time Perspective Inventory

Michael T. McKay, Frank C. Worrell, Elizabeth C. Temple, John L. Perry, Jon C. Cole, Zena R. Mello

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Recently, a shortened version of the Zimbardo Time Perspective Inventory (ZPTI; Zimbardo & Boyd, 1999) was proposed as a "gold standard" (Sircova et al., 2014, p. 9). In this study, we examined the internal consistency and structural validity of this version of the ZPTI in samples of adolescents from the United Kingdom (. N=. 913) and the United States (. N=. 815), and adults from Australia (. N=. 667). Results provided support for the internal consistency of ZPTI scores, but structural validity analyses indicated poor fit and numerous problematic items. The findings call into question the use of scores on this shortened version of the ZTPI.
    Original languageEnglish
    Pages (from-to)68-71
    Number of pages4
    JournalPersonality and Individual Differences
    Volume72
    Early online date16 Sep 2014
    DOIs
    Publication statusPublished - Jan 2015

    Keywords

    • Confirmatory factor analysis
    • Exploratory structural equation modeling
    • Zimbardo Time Perspective Inventory

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