Abstract
The Dark Triad (DT) is a constellation of three socially undesirable personality traits: Machiavellianism, psychopathy, and narcissism. This study developed a Japanese version of the Dark Triad Dirty Dozen (DTDD-J) which used a self-report measure of the DT, and examined its reliability and validity. Undergraduate students (N=246) completed the DTDD-J, three measures of each DT personality trait, and the Big-Five Scale. Hierarchical confirmatory factor analysis indicated that the DTDD-J had three group factors corresponding to each DT personality trait, and one general factor of comprehensive DT. Internal consistencies of the DTDD-J were high, except for psychopathy. Concurrent validity and discriminant validity of the DTDD-J were almost consistent with previous research. Although there are remaining issues, the results generally support the reliability and validity of the DTDD-J.
