A theoretical approach to resolving the psychometric problems associated with the Zimbardo Time Perspective Inventory: Results from the USA, Australia, Slovenia, and the United Kingdom.

We examined the internal consistency, structural validity, and convergent validity of scores on a version of the ZTPI that consisted only of items that specifically referenced time constructs, the ZTPI-TP. Participants consisted of five samples of adolescents and adults from four countries: Australia (653 adults), Slovenia (425 adolescents and adults), the United Kingdom (913 adolescents; 455 adults), and the United States (815 adolescents). Structural validity analyses provided stronger support for ZTPI-TP scores than for ZTPI scores, and convergent validity evidence also provided support for ZTPI-TP scores. However, analyses revealed that the PF and PH factors were still problematic, especially with regard to factor coefficients and internal consistency estimates. We concluded that the ZTPI-TP can form the basis for a more robust version of the ZTPI. (PsycINFO Database Record (c) 2018 APA, all rights reserved)
Source: European Journal of Psychological Assessment - Category: Psychiatry & Psychology Source Type: research