A reward prediction error for charitable donations reveals outcome orientation of donators
A reward prediction error for charitable donations reveals outcome orientation of donators
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DOI：
10.1093/scan/nsr088
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发表时间：
2013-02-01
影响因子：
4.2
通讯作者：
Fliessbach, Klaus
中科院分区：
文献类型：
--
作者：
Kuss, Katarina;Falk, Armin;Fliessbach, Klaus
亲社会行为的动机，如慈善捐赠，既可以与行动有关，也可以与结果有关。为了探讨慈善捐赠中结果导向的神经基础，我们要求33名受试者在接受功能磁共振成像(FMRI)扫描的同时，做出影响他们自己和慈善组织回报的选择。我们通过实验导致奖励预测误差(RPE)，随后丢弃了一些选择的结果。我们将共同定位于伏隔核内对应于受试者自身回报的RPE的大胆信号，在那些愿意捐赠的受试者中观察到了与慈善回报相同的RPE信号。这一独特的神经RPE信号表明，结果只影响无关的其他人，这表明在自私、个人和非自私的社会回报的结果评估过程中，共同的大脑过程，并强烈表明结果导向动机在慈善捐赠中的有效性。
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.