consuming alcohol, a placebo, or a non-alcoholic control beverage. Behavioral (i.e., RT, accuracy, and posterror CE in RT) and ERP (i.e., ERN, N2, and FSW) indices of performance and cognitive control were examined on trials following correct and incorrect responses. Based on prior work (Bartholow et al., 2012; Ridderinkhof et al., 2002), we expected ERN amplitude to be decreased (indicating reduced conflict monitoring during control failures) and the post-error CE in RT to be increased (indicating impaired performance adjustment) by alcohol. We further hypothesized that the amplitude of the N2 and FSW elicited by high-conflict (incompatible) flanker arrays would be attenuated in the alcohol relative to the control and placebo groups, but only on post-error trials. Finally, we predicted that these indices of control would rebound in the alcohol group on subsequent trials.
