and withdrawal state emotion conditions for AVG, Cz, and LM reference modes, depressed and never-depressed groups did not differ in frontal brain activity during the resting condition for these montages. The second hypothesis asserted that, in line with the capability model of individual differences, frontal EEG asymmetry during the approach and withdrawal conditions of the emotional challenge ask would show larger differences between depressed and never-depressed individuals than frontal EEG asymmetry at rest. This prediction was supported for AVG, Cz, and LM references, wherein lifetime MDD+ participants displayed significantly less relative left frontal activity than MDD− participants during approach and withdrawal facial expressions but not during resting sessions. In contrast, results for the CSD-transformed data indicated that EEG asymmetry during all three conditions – approach, withdrawal, and rest –significantly differed as a function of lifetime MDD status.
