日本語版勇気尺度の作成

──項目反応理論を用いた尺度構成──

抄録

The purpose of this study is to translate the Courage Measure (CM) into Japanese and to examine the validity of the Japanese version of the CM (CM-J). Study 1 (N = 1,000) showed that the CM-J has a one-factor structure similar to previous studies and that it has sufficient measurement accuracy and good reliability based on item response theory. Study 2 (N = 366) confirmed the convergent and criterion-related validity of the CM-J in relation to optimism, pessimism, subjective well-being, Big Five personality traits, and the behavioral indicator. Study 3 (N = 200) confirmed the convergent validity of the CM-J in relation to resilience, bravery, authenticity, and grit. The CM-J is useful to the research of individual differences in courage and, in the future, for screening the clients who potentially drop out in exposure therapy.