According to recent theories of addiction, the commonly used term impulsivity comprises two factors: rash impulsiveness and reward sensitivity. The present study addresses the relevance and generalizability of this two-factor model in a clinical sample of substance use disorder patients. This was examined by examining both internal and external validity. In addition, a comparison was made between self-reported and behavioral measures reflecting reward sensitivity and rash impulsiveness. Results provide evidence for the existence of the two hypothesized impulsivity factors in a clinical sample of substance dependent patients. Meaningful relationships between the model and drug use characteristics have been found, providing further evidence for the validity of the two-factor model. Furthermore, it is suggested that behavioral and self-report measures of impulsivity represent different constructs.
European Addiction Research
Department of Psychology

Boog, M.C., Goudriaan, A.E., van de Wetering, B.J.M, Deuss, H, & Franken, I.H.A. (2013). The concepts of Rash Impulsiveness and Reward Sensitivity in substance use disorders. European Addiction Research, 19, 261–268. Retrieved from