Amplitudes were examined using a repeated-measures analysis of variance (rANOVA) with factors reward (reward, no-reward) and task difficulty (high, low). Results are generally reported without strict Bonferroni correction for multiple testing when multiple ERP components were considered to avoid over-correction, thereby potentially manufacturing false negatives. However, we are also referring to the corrected p-values when interpreting the results of the rather exploratory early and mid-range potentials (P1, N1, P2, N2 and P3) in the cue and target phase (yielding a corrected value of p<0.01).
