Meta-Analytic Reliability Generalization Study of Perceived Stress Scale In Türkiye Sample

Abstract

The aim of the study is to examine the meta-analytic reliability generalization of the 14, 10, and 8-item forms of the Perceived Stress Scale, developed by Cohen et al. in 1983, for theses produced in Turkey. For this purpose, how different moderator variables affect the reliability coefficients and publication bias were also examined 81 Cronbach Alpha coefficients from 78 studies selected in accordance with the established criteria were included in the meta-analysis. Reliability generalization was used in the analysis of the data. Analyzes were made with the random effects model using the coefficient values converted from the Bonett method. In the study, the effect size value was found to be .82 (95% CI: .80, .83), and it was concluded that the sample type (α= .81) and the study area (α= .81) moderator variables had a statistically significant effect on the reliability estimation in terms of heterogeneity of effect sizes. This revealed that these two moderator variables affected the estimations of the reliability coefficients. In addition, it has been observed that other moderator variables such as age, gender, and the number of items in the scale are not sources of heterogeneity and have no effect on reliability estimation. From this, it was deduced that the scale works well enough to generalize to different situations with different item numbers. Finally, according to the results of the analysis for the determination of publication bias, it was seen that there was no publication bias in the study.