Revealing the nuanced associations between facets of trait impulsivity and reactive and proactive aggression

Although impulsivity has been repeatedly associated with aggression, specific associations between facets of impulsivity and reactive (RA) and proactive (PA) have yet to be fully elucidated. This may be due, in part, to overlapping variance among facets of impulsivity and between RA/PA. The current study systematically examined associations among these variables using both bivariate correlations as well as path analysis. In addition to raw aggression scores, we isolated the variance unique to both RA/PA by regressing RA onto PA (and vice versa), and saving these residual aggression scores. Participants included 384 racially-diverse undergraduates. Results indicated facets of impulsivity uniquely characterize RA/PA, particularly using residual aggression scores. RA was uniquely characterized by higher levels of Negative Urgency followed by low Perseverance, as well as high Premeditation and low Positive Urgency. In contrast, PA was uniquely characterized by higher levels of Positive Urgency, and to a lesser degree, high Premeditation. Results indicate facets of impulsivity represent potentially different underlying pathways to specific subtypes of aggression. As such, impulsivity, particularly in the context of affect, may be especially important to consider in relation to specific subtypes of aggression. 2015 Elsevier Ltd. All rights reserved.