Journal
PSYCHOPHYSIOLOGY
Volume 48, Issue 4, Pages 507-514Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1469-8986.2010.01081.x
Keywords
Decision-making; Microeconomics; Feedback negativity; Somatic markers; Ultimatum game
Funding
- Friedrich-Schiller-Universitat Jena
- Volkswagen Foundation
- Alexander von Humboldt Foundation
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Rational choice theory predicts that humans always optimize the expected utility of options when making decisions. However, in decision-making games, humans often punish their opponents even when doing so reduces their own reward. We used the Ultimatum and Dictator games to examine the affective correlates of decision-making. We show that the feedback negativity, an event-related brain potential that originates in the anterior cingulate cortex that has been related to reinforcement learning, predicts the decision to reject unfair offers in the Ultimatum game. Furthermore, the decision to reject is positively related to more negative emotional reactions and to increased autonomic nervous system activity. These findings support the idea that subjective emotional markers guide decision-making and that the anterior cingulate cortex integrates instances of reinforcement and punishment to provide such affective markers.
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