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Support for a two-factor model of impulsivity and hazardous substance use in British and Australian young adults |
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| Authors: | Matthew J Gullo Elizabeth WardSharon Dawe Jane PowellChris J Jackson |
| Institution: | a School of Psychology, Mt. Gravatt Campus, Griffith University, Brisbane, Queensland 4111, Australia b Department of Psychology, Goldsmiths, University of London, Lewisham Way, New Cross, London SE14 6NW, UK c Australian School of Business, University of New South Wales, Kensington, New South Wales 2033, Australia d Institute of Psychology, Health and Society, University of Liverpool, Eleanor Rathbone Building, Bedford Street South, Liverpool L69 7ZA, UK |
| Abstract: | Multiple lines of evidence suggest impulsivity comprises two distinct components relevant to substance misuse. Reward drive reflects sensitivity to rewarding stimuli and subsequent approach motivation. Rash impulsiveness reflects the ability to inhibit such approach behavior in light of negative consequences. However, several studies suggest the latter trait to be a more robust predictor. This begs the question as to whether a less parsimonious two-factor model is necessary. This study employed structural equation modeling to compare the fit of one- and two-factor impulsivity models to alcohol and drug use data provided by British (n = 183) and Australian (n = 271) young adults. Results consistently supported the two-factor model and its cross-cultural consistency, with rash impulsiveness being the more robust predictor. |
| Keywords: | Impulsivity Alcohol Illicit drugs Reward drive Reward sensitivity Rash impulsiveness Substance abuse Addiction Structural equation modeling 2-CARS |
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