tend to choose more immediate, smaller rewards rather than wait for larger rewards (Dougherty et al. 2005b). These individuals also show state-level increases in some impulsive behaviors as a function of alcohol consumption, whereby alcohol consumption leads to more errors of commission (failure to inhibit a response one should have inhibited) in a laboratory task (Dougherty et al. 2002). Because this type of error may reflect urgent responding, it is possible that some individuals act based on high trait levels of urgency that are compounded by alcohol-induced state increases in urgency, again suggesting multiple links between impulsivity and alcohol use.
