by virtue of the psychomotor slowness, alcoholics had more omission errors, fewer commission errors, and slower reaction time on the Go trials. This general slowness in the activation of goal-directed responses is confirmed in previous studies as well. Ortner et al. (2003) found alcohol intoxication reduced impulsivity during a delayed discounting task and suggested that alcohol intoxication may lead to more cautious decision-making under certain conditions. Similarly, based on their results on alcoholic and problem gamblers, Lawrence et al. (2009) have concluded that inhibitory control is impaired in alcohol dependence but it occurs in the context of psychomotor slowing. In addition, alcoholics failed to show behavioral adjustments following failed stops on a stop signal task. The findings are interpreted as deficits due to the direct effects of chronic alcohol administration on fronto-striatal circuitry.
