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. Copyright

Behavioral approach system, Impulsivity, Rash impulsiveness, Reward sensitivity, Substance dependence,
European Addiction Research
Erasmus School of Philosophy

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(5), 261–268. doi:10.1159/000346178