著者

小塩 真司

出版者

心理学評論刊行会

雑誌

心理学評論 (ISSN:03861058)

巻号頁・発行日

vol.59, no.1, pp.68-83, 2016 (Released:2018-04-13)

参考文献数

105

被引用文献数

22

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Reporting of reliability coefficients is an important procedure in articles describing the development of new psychological scales. However, it appears that Japanese psychology researchers have not yet arrived at a consensus regarding what constitutes a desirable magnitude for a reliability coefficient. In this study, I conducted a meta-analysis summarizing 65 test-retest correlations from 58 studies published in the Japanese Journal of Psychology, which is a highly-ranked peer-reviewed psychological journal in Japan. The results of a meta-analysis, which involved the use of a random effect model, showed that the desirable mean test-retest correlation was ρ =.76 (95% CI =.70–.81). There was no significant relationship between the test-retest correlations and coefficients alpha. The number of items of the scale correlated positively with the test-retest correlation coefficients. Researchers tended to mention problems regarding test-retest coefficients only when they were less than r =.50. The desirable usage of reliability coefficients was also discussed.