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ERP waveforms presented separately by condition at electrodes Cz (top) and Pz (bottom) for the full sample (N = 101). Expected outcomes indicate behavioral non-switch trials in which the rule remained unchanged. Unexpected outcomes indicate reversal trials in which the rule changed unexpectedly. Reward and punishment refer to the valence of the presented outcome, indicating that the fictional customer (not the participant) won or lost money on that trial.
