incompatible trials only. Data from an additional four participants were excluded from the N2 and FSW analysis due to excessive artifact in the stimulus-locked data; therefore the final sample for these analyses consisted of 86 participants (control: n = 24; placebo and alcohol: n = 31 per group). Initial analyses showed that the amplitude of the N2 peaked between 215 to 345 ms post-stimulus onset and was most pronounced over frontal and frontal-central scalp locations, consistent with past research (van Veen & Carter, 2002). Preliminary analyses indicated the FSW emerged 800–1200 ms post-stimulus onset and was most pronounced over frontal and fronto-central electrode locations, as in previous research (see Bailey et al., 2010; West & Bailey, 2012). Analyses of the N2 and FSW included data from electrodes at frontal (F3, Fz, F4) and fronto-central (FC3, FCz, FC4) locations. Mean N2 and FSW amplitudes were submitted to separate 3 (Group: control, placebo, alcohol) × 2 (Previous trial accuracy: correct, incorrect) × 2 (Current trial type: compatible, incompatible) × 2 (Coronal: frontal, frontal-central) × 3 (Sagittal: left, midline, right) HLMs. Mean amplitudes as a function of beverage group, previous trial accuracy, and compatibility are displayed in Table 2, and Figures 3 and
