accurate (M = .87) than control group participants (M = .72), t(43) = 2.65, p < .05, and just as accurate as placebo group participants (M = .81), t(43) = 1.34, p = .19, at detecting when they had responded incorrectly. An additional analysis on judgments made about correct-response trials (left-hand side of Figure 7) showed that participants in all beverage groups were equally able to recognize their correct responses, F(2, 62) = 1.82, p = .17. Another possibility suggested by the error detection hypothesis is that alcohol participants might be more likely than those in the other groups to mistakenly judge some of their incorrect responses as correct. However, participants in all beverage groups were equally unlikely to make this mistake (F < 1).
