You Have My Word: Reciprocity Expectation Modulates Feedback-Related Negativity in the Trust Game

Qingguo Ma, Liang Meng and Qiang Shen

PLOS ONE, 2015, vol. 10, issue 2, 1-10

Abstract: Promise is one of the most powerful tools producing trust and facilitating cooperation, and sticking to the promise is deemed as a key social norm in social interactions. The present study explored the extent to which promise would influence investors’ decision-making in the trust game where promise had no predictive value regarding trustees’ reciprocation. In addition, we examined the neural underpinnings of the investors’ outcome processing related to the trustees’ promise keeping and promise breaking. Consistent with our hypothesis, behavioral results indicated that promise could effectively increase the investment frequency of investors. Electrophysiological results showed that, promise induced larger differentiated-FRN responses to the reward and non-reward discrepancy. Taken together, these results suggested that promise would promote cooperative behavior, while breach of promise would be regarded as a violation of the social norm, corroborating the vital role of non-enforceable commitment in social decision making.

Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0119129

DOI: 10.1371/journal.pone.0119129

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