reliably (t < 1). No such differences were apparent for participants in the alcohol group, however, t(22) = −1.33, p = .25. Additional contrasts showed that, whereas postcorrect interference effects were unaffected by beverage group (F < 1), posterror interference effects were larger in the alcohol group (M = 26.3 ms) than in the placebo group, (M = 12.3 ms), t(43) = 2.39, p = .02, indicating that posterror adjustments were larger in the placebo group.