of means was again in the unpredicted direction, with the lifetime MDD+ group exhibiting higher relative left frontal activity than the lifetime MDD− group. The approach condition, although replicating the pattern of means evident in the main results (wherein the lifetime MDD+ group displayed relatively less left frontal activity than the MDD− group), became non-significant for all three references when accounting for possible EMG contributions to EEG asymmetry (AVG, Cz, and LME: .05 < p < .13). For the CSD mode, the lifetime MDD main effect that was significant in the main analysis was reduced to marginal significance once EMG was taken into account (F(1, 302) = 3.6, p < .07).
