Submission 180
Correct but Unfavorable Outcomes Elicit an Error Positivity: Evidence from a Rock-Paper-Scissors Paradigm
SymposiumTalk-02
Presented by: Peter Löschner
The error positivity (Pe) is a neural correlate of performance monitoring and has been associated with error awareness and the accumulation of evidence that an error has occurred. We examined whether the Pe constitutes a higher-order error signal reflecting inference-based outcome evaluation. To this end, we designed a multistage task modeled after the game rock–paper–scissors, in which the overall outcome depended on the correctness of responses across two successive stages. Notably, a correct second-stage response could yield an overall unfavorable outcome if it followed an erroneous first-stage response. We found the generally observed Pe following immediate errors within each stage. Crucially, we also observed a Pe after correct second-stage responses when these responses were associated with an unfavorable outcome. A pattern classifier trained on this higher-order Pe successfully decoded the Pe elicited by first-stage errors. Our findings suggest that the Pe reflects an evaluative process that integrates multiple response outcomes to infer the overall outcome of a multistage task.