Journal
SOCIAL COGNITIVE AND AFFECTIVE NEUROSCIENCE
Volume 8, Issue 2, Pages 216-223Publisher
OXFORD UNIV PRESS
DOI: 10.1093/scan/nsr088
Keywords
charitable donations; reward processing; social preferences; functional magnetic resonance imaging (fMRI); nucleus accumbens (NAc)
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Funding
- German Research Council [FL 715/1-1, WE 4427/3-1]
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The motives underlying prosocial behavior, like charitable donations, can be related either to actions or to outcomes. To address the neural basis of outcome orientation in charitable giving, we asked 33 subjects to make choices affecting their own payoffs and payoffs to a charity organization, while being scanned by functional magnetic resonance imaging (fMRI). We experimentally induced a reward prediction error (RPE) by subsequently discarding some of the chosen outcomes. Co-localized to a nucleus accumbens BOLD signal corresponding to the RPE for the subject's own payoff, we observed an equivalent RPE signal for the charity's payoff in those subjects who were willing to donate. This unique demonstration of a neuronal RPE signal for outcomes exclusively affecting unrelated others indicates common brain processes during outcome evaluation for selfish, individual and nonselfish, social rewards and strongly suggests the effectiveness of outcome-oriented motives in charitable giving.
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