Role of right temporoparietal junction for counterfactual evaluation of partner's decision in ultimatum game.

ABSTRACT: Humans assess the distributions of resources based on their aversion to unfairness. If a partner distributes in an unfair manner even though the partner had a less unfair distribution option, a recipient will believe that the partner should have chosen the counterfactual option. In this study, we investigated the neural basis for fairness evaluation of actual and counterfactual options in the ultimatum game. In this task, a partner chose one distribution option out of two options, and a participant accepted or rejected the option. The behavioral results showed that the acceptance rate was influenced by counterfactual evaluation (CE), among others, as defined by the difference of monetary amount between the actual and counterfactual options. The functional magnetic resonance imaging results

SUBMITTER: Ogawa A 

PROVIDER: S-EPMC10016052 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature