Abstract
Rumination has been regarded as the predictors of both the onset and maintenance of depression. This study developed the Japanese version of the Leuven Adaptation of the Rumination on Sadness Scale (LARSS; Raes et al., 2008), which measures causal analytical, understanding, and uncontrollable aspects of rumination. To evaluate the reliability and validity, undergraduate students (N=319) completed the Japanese version of LARSS, depression, mindfulness, and other rumination scales. In addition, other students (N=59) completed the LARSS twice to determine test–retest reliability. Similar to the original LARSS, the Japanese version showed three-factor structure with adequate model fit on confirmatory factor analysis, comprising Causal Analysis, Understanding, and Uncontrollability factors. The three factors had good internal consistency and test–retest reliability in a month. Consistent with prior research, Uncontrollability was only related to depression when the other two factors were controlled. Moreover, mindfulness skills negatively correlated only with Uncontrollability. These results substantiate the reliability and validity of the Japanese version of the LARSS.
