Comparisons between alcoholics and control groups on demographic measures, cognitive, and behavioral performance during the task and scales are shown in Table 2. Significant differences between groups were found for errors made on the Go trials t (22.24) = 2.50, p < 0.05, Nonplanning t (38) = 3.45, p < 0.01, and Motor t (38) = 3.28, p < 0.01, subscales of the BIS-11 scale, as well as Total Impulsiveness t (38) = 3.87, p < 0.001; alcoholics made more errors on Go trials, and scored higher on Nonplanning and Motor subscales, as well as Total Impulsiveness of the BIS-11 scale compared to control subjects. No statistically significant differences were found for age, MMSE, NoGo error, correct response percentage, reaction time, and the attentional impulsiveness subscale of BIS-11, indicating that the groups were comparable on these measures.
