Previous studies have shown that the Dark Triad traits (psychopathy, narcissism and Machiavellianism) are associated with impulsivity. However, prior work has relied exclusively on retrospective assessment via self-report questionnaires or on one-time behavioral measures of impulsive behavior. Therefore, we examined how the Dark Triad traits relate to moment-to-moment impulsivity as people navigate through their natural environment in a given day. For 14 days, 283 non-clinical adult volunteers carried smartphone devices to monitor their daily impulsive behaviors. Participants were randomly prompted five times per day. In addition, the pattern of correspondence between the moment-to-moment impulsivity monitoring and the already established impulsivity assessment methods (retrospective self-report questionnaire, i.e., 48-item Discounting Inventory; behavioral task, i.e., Delay-Discounting task with pairs of hypothetical choices) was tested. Strong correlations were found between psychopathy, narcissism, and self-reported impulsivity. Moreover, those traits showed weaker (but still significant) correlations with both, the one-time behavioral and the momentary monitoring measures of impulsivity. Machiavellianism did not correlate with any type of impulsivity assessment. When testing the association between the self-report, behavioral, and momentary measures of impulsivity, analysis revealed weak to moderate correlations. Reliably, these results support other recent findings suggesting that those three impulsivity tasks probably measure different constructs.
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