Predictive Validity of the Three-Factor Model of Impulsivity for Risky Behaviors

Impulsivity is a multifaceted construct particularly relevant for understanding a wide variety of behaviors, especially risky behaviors. A recent conceptualization of impulsivity identifies three impulsivity factors—pervasive influence of feelings, feelings trigger action, and lack of follow-through—that have been shown to predict different behaviors. In this contribution, we examine the psychometric properties of an Italian version of such a three-factor model on a relatively large sample (N = 845). Moreover, on a subsample (n = 766) we determined whether specific dimensions of impulsivity are related to a series of risky behaviors, assessed 3 weeks later, by testing the predictive validity of the multidimensional inventory also in comparison with a standard measure of personality (HEXACO). An exploratory structural equation model confirmed the original 3-dimension structure and showed that the Italian adaptation has satisfactory psychometric properties. Convergent validity with the HEXACO dimensions was established. Furthermore, only the factors feelings trigger action and lack of follow-through, not pervasive influence of feelings, predicted risky behaviors. Findings provide a clear support to the 3-factor model of impulsivity and demonstrate its usefulness for a better comprehension of risky behaviors.