TY - JOUR
T1 - A critical examination of the reliability and validity of the SZTPI-15 in British, American and Australian samples
AU - McKay, Michael T.
AU - Worrell, Frank C.
AU - Temple, Elizabeth C.
AU - Perry, John
AU - Cole, Jon C.
PY - 2014/10
Y1 - 2014/10
N2 - As an individual difference variable assessing the extent to which attitudes towards past, present and future influence behavior, time perspective is a potentially useful construct. However, its development and utility has been compromised by measurement issues. Recently, a short form of the Zimbardo Time Perspective Inventory (ZTPI), the SZTPI-15 has been suggested to yield valid and reliable scores. Using three independent samples from America, Australia, and the United Kingdom, the present study tested the psychometric properties of SZPTI-15 scores. Confirmatory factor analyses did not support the 5-factor structure and internal consistency estimates for four of the subscales were low. Fit indices obtained from exploratory structural equation modeling were better, suggesting that permitting items to load on multiple factors improved model fit. Correlations with variables shown to be related to ZTPI factors broadly supported the concurrent validity of the SZTPI-15. Results suggest that further psychometric examination of SZTPI-15 scores is required.
AB - As an individual difference variable assessing the extent to which attitudes towards past, present and future influence behavior, time perspective is a potentially useful construct. However, its development and utility has been compromised by measurement issues. Recently, a short form of the Zimbardo Time Perspective Inventory (ZTPI), the SZTPI-15 has been suggested to yield valid and reliable scores. Using three independent samples from America, Australia, and the United Kingdom, the present study tested the psychometric properties of SZPTI-15 scores. Confirmatory factor analyses did not support the 5-factor structure and internal consistency estimates for four of the subscales were low. Fit indices obtained from exploratory structural equation modeling were better, suggesting that permitting items to load on multiple factors improved model fit. Correlations with variables shown to be related to ZTPI factors broadly supported the concurrent validity of the SZTPI-15. Results suggest that further psychometric examination of SZTPI-15 scores is required.
KW - Confirmatory factor analysis
KW - Exploratory structural equation modeling
KW - SZTPI-15
KW - Time perspective
UR - http://www.scopus.com/inward/record.url?scp=84902437526&partnerID=8YFLogxK
U2 - 10.1016/j.paid.2014.05.030
DO - 10.1016/j.paid.2014.05.030
M3 - Article
AN - SCOPUS:84902437526
SN - 0191-8869
VL - 69
SP - 168
EP - 172
JO - Personality and Individual Differences
JF - Personality and Individual Differences
ER -