The Dark Triad, reinforcement sensitivity and substance use

Substance use is frequently perceived as a problematic behavior associated with negative social, psychological and physiological consequences. Despite the perception that substance use constitutes problematic behavior, previous literature on the personality characteristics of substance users is scarce. The majority of past research has focused on clinical samples as opposed to normative substance use among non-clinical samples. The current study investigated the relationship between the Dark Triad, reinforcement sensitivity and substance use. Participants consisted of 242 students (122 males and 120 females) from Western University ages 18 to 37 years (M = 18.85, SD = 2.05). Participants completed an online survey that included the Short Dark Triad, the BIS/BAS scales and a substance use questionnaire. Results revealed that all components of the Dark Triad were positively correlated with behavioral approach, psychopathy was negatively correlated with behavioral inhibition, psychopathy and narcissism were positively correlated with substance use, and behavioral inhibition was negatively correlated with substance use. Contrary to expectations, there was no significant mediation among the Dark Triad components, BAS and substance use. By identifying the personality traits of substance users, researchers can attempt to decrease the costs associated with substance use by developing prevention programs that target high-risk individuals.