Pechorro, PedroOliveira, João PedroGonçalves, Rui AbrunhosaJesus, Saul Neves de2018-12-072018-12-072018-062183-6051http://hdl.handle.net/10400.1/11133The main aim of the present study was to examine the psychometric properties of a 18-items short version of the Barratt Impulsiveness Scale - 11 short among a Portuguese school sample (N =543) of male and female adolescents. The BIS-11 short version demonstrated good psychometric properties, namely in terms of its three-factor structure, internal consistency, convergent validity, and discriminant validity. In terms of criterion-related validity positive correlations were found with Conduct Disorder symptoms, alcohol use, cannabis use, and unprotected sex (i.e., sex without using condoms). The psychometric properties of the BIS-11 short version generally justify its use among Portuguese adolescents.spaPsychopathic Traits InventoryAlcohol-UseJuvenile-DelinquentsAntisocial-BehaviorPersonality-TraitsCollege-StudentsCommunity SampleDecision-MakingImpulse ControlSubstance Usejournal article10.21865/RIDEP47.2.11