marginally significantp = 0.09
ERP data P1 An ANOVA on P1 amplitudes showed a marginally significant main effect of reward values, F (1, 18) = 3.18, p = 0.09, η p 2 = 0.15, suggesting that participants demonstrated larger P1 mean amplitudes after high reward cues ( M = 2.84 μV, SD = 0.48) than after low reward cues ( M = 2.47 μV, SD = 0.53; see Fig. 1 ).