Evaluation of test-retest reliability in the development of psychological scales: A meta-analysis of correlation coefficients described in the “Japanese Journal of Psychology”

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  • 心理尺度構成における再検査信頼性係数の評価
  • 心理尺度構成における再検査信頼性係数の評価 : 「心理学研究」に掲載された文献のメタ分析から
  • シンリ シャクド コウセイ ニ オケル サイケンサ シンライセイ ケイスウ ノ ヒョウカ : 「 シンリガク ケンキュウ 」 ニ ケイサイ サレタ ブンケン ノ メタ ブンセキ カラ
  • ―「心理学研究」に掲載された文献のメタ分析から―

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Abstract

<p>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.</p>

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