Abstract
This study aimed to identify the construct of the Amanojaku trait empirically and to examine its mediating role in the relationship between the Dark Triad and psychological reactance. First, a 6-item Amanojaku scale was constructed, and its one-factor structure was confirmed. The scale includes items related to self-centeredness, a sense of superiority, and condescension. A mediating effect (partial mediation) of the Amanojaku trait was also confirmed in the relationship between psychopathy, narcissism, and reactance.