ERP data of amplitude and latency were analyzed by means of 3- and 4-way repeated measure ANOVAs; the P1 and N1 component were analyzed separately. For P1, there was one between-group factor, "gender" (women and men) and two within-group factors, "emotion" (neutral, distress) and "cerebral hemisphere" (left and right). For N1 there was the extra within-group factor "electrode site" (lateral/occipital, posterior/temporal). Behavioural data were analyzed by means of a 2 way repeated-measures ANOVA performed on mean RTs according to "gender" of viewers and emotional valence of stimuli ("emotion" factor).
