In the main experiment, the average reaction time to targets was 451 milliseconds (SD = 75) and hit rate was 96.1% (SD = 5.3). In the training session, the average reaction time was 286 milliseconds (SD = 114) and hit rate 99.6% (SD = 3.4). We calculated correlations across reaction times and hit rates with alcohol use variables. Commonly, there were no statistically significant correlations, but we found some single ones; in the main experiment, reaction time correlated negatively with alcohol use, as measured with MAX-D24 (r = −0.15, p < 0.05) and hit rate correlated positively with alcohol use, as measured with RAPI at age 18 (r = 0.17, p < 0.05). In the training session, hit rate correlated positively with alcohol use, measured with MAX-D24 (r = 0.16, p < 0.05).
