A Comparison between Two Models of Impulsivity in Explaning Substance Use: UPPS-S Model and Two-factor Model of Impulsivity

U literaturi se javlja linija argumenata koja propituje valjanost popularnog UPPS-P modela impulzivnosti te se kao alternativa predlaže više parsimoničan i teorijski utemeljen Dvofaktorski model impulzivnosti. Za razliku od UPPS-P modela, koji je produkt faktorske analize, Dvofaktorski model ima temelje u biološkim osnovama korištenja sredstava ovisnosti. U ovom istraživanju na uzorku mladih odraslih (N = 609) testira se inkrementalna valjanost UPPS-P modela povrh Dvofaktorskog modela u objašnjenju kriterija korištenja sredstava ovisnosti: životne prevalencije konzumacije marihuane i drugih droga i čestine i problematičnosti konzumacije alkohola i droga. Suprotno pretpostavljenom, pronađena je jasna inkrementalna valjanost UPPS-P modela povrh Dvofaktorskog modela u objašnjenju korištenja sredstava ovisnosti. Dimenzije impulzivnosti objašnjavaju veliki dio varijance kriterija. Najkonzistentniji prediktor korištenja sredstava ovisnosti bila je UPPS-P dimenzija traženje uzbuđenja. Uz traženje uzbuđenja za objašnjenje kriterija korištenja droga najrelevantnija je bila dimenzija nedostatka upornosti. Pozitivna urgentnost je značajno predviđala čestinu i problematičnost konzumacije alkohola. Dimenzije negativne urgentnosti predviđale su problematičnu konzumaciju droga i alkohola.In the current literature, there is a line of arguments that questions the validity of the popular UPPSP model of impulsivity, and as an alternative, a more parsimonious and theoretically based Twofactor model of impulsivity is proposed. Unlike the UPPS-P model, which is a product of factor analysis, the Two-Factor Model has its foundations in the biological basis of substance use. In this study, on a sample of young adults (N = 609), the incremental validity of the UPPS-P model is tested on top of the Two-Factor Model in explaining: the lifetime prevalence of marijuana use and the use of other drugs, the frequency of alcohol and drug use, and the alcohol and drug related problems. Contrary to what was assumed, a clear incremental validity of the UPPS-P model over the Two-factor model was found in explaining substance use. The dimensions of impulsivity explained a large amount of variance in the criteria. The most consistent predictor of substance use was the UPPS-P sensation seeking dimension. When explaining the drug use criteria, along with sensation seeking, the most relevant dimension was the lack of perseverance. Positive urgency significantly predicted the frequency of alcohol consumption and problem use. Dimensions of negative urgency predicted problematic alcohol and drug consumption