ISSN 0439-755X
CN 11-1911/B

心理学报 ›› 2016, Vol. 48 ›› Issue (6): 733-745.doi: 10.3724/SP.J.1041.2016.00733

• 论文 • 上一篇    下一篇


祝婧媛1,2; 何贵兵1   

  1. (1浙江大学心理与行为科学系, 杭州 310028) (2厦门大学心理咨询与教育中心, 厦门 361005)
  • 收稿日期:2014-08-14 出版日期:2016-06-25 发布日期:2016-06-25
  • 通讯作者: 何贵兵, E-mail:
  • 基金资助:


Risk source matters much in decision-making: Betrayal aversion and the role of need for affiliation

ZHU Jingyuan1,2; HE Guibing1   

  1. (1 Department of Psychology and Behavioral Science, Zhejiang University, Hangzhou 310028, China) (2 Counseling and Education Center, Xiamen University, Xiamen 361005, China)
  • Received:2014-08-14 Online:2016-06-25 Published:2016-06-25
  • Contact: HE Guibing, E-mail:


经典的风险决策研究及相关理论模型关注人们如何对以不同概率出现的损益结果进行评价与选择, 但很少区分和探究在相同概率和损益值下不同风险来源对决策的影响。事实上, 决策情境中的风险既可能源自客观因素, 也可能源自人为因素。与相同大小的客观风险相比, 人们更规避人为风险, 这种现象被称为“背信规避”。本研究采用信任博弈任务, 通过最小可接受概率法和决策选择法两种方式探讨风险来源对决策冒险性的影响。结果发现:(1)中国被试存在“背信规避”现象, 即对人为风险的规避程度高于客观风险; (2)当恐惧情绪被唤起时, 被试对人为风险的规避程度降低, 使得背信规避现象消失, 甚至出现“反背信规避”倾向; (3)人际联结需求影响背信规避, 人为风险下人际联结需求中介了恐惧情绪对决策冒险性的影响。上述结果有助于加深我们对风险来源影响决策的现象及其机制的理解。

关键词: 风险来源, 背信规避, 恐惧情绪, 人际联结需求


Risk source plays an important role in risky decision making. Unlike “lottery risk” that arises from a stochastic process, “person-based risk” is originated from others’ decisions. Bohnet and Zeckhauser (2004) first studied the effect of risk source on risk preference using “trust game” task in which participants were asked to assign their “minimum acceptable probabilities (MAPs)” for securing the higher payoff, so as to make themselves just incline to the risky option from the sure one. It was found that the MAPs were generally higher when the occurrence of a certain outcome was determined by other person rather than a stochastic process. This phenomenon was named “betrayal aversion”. Nevertheless, Fetchenhauer and Dunning (2012) obtained quite different findings: participants were significantly more willing to choose the risky option in trust game than in lottery game when they were informed that their chance of drawing a white ball or interacting with a trustworthy person was about 50%. These inconsistent findings hint the necessity of undermining the causes of “betrayal aversion”. Hence the present study is to investigate how risk source and need for affiliation affect risky decision-making. In Study 1, participants face a binary-choice trust game with two options: a certain option in which both the participant and the anonymous partner would earn ¥10 for sure, and a risky one in which the participant may have a “good” outcome (with probability of 50%, participant and partner would earn ¥15 respectively) or a “bad” outcome (50% probability, participant earns¥8 and the partner earns ¥22). A between-subject design was used to explore the effects of risk sources. In “lottery risk” condition, whether the risky outcome would be (15, 15) or (8, 22) is depended on a lottery mechanism. In “person-based risk” condition, the outcome distribution depends on the partner’s choice. Participants in Experiment 1 were asked to calibrate their MAPs which could represent their risk preferences. In Experiment 2, participants were asked to choose between the certain option and the risky one directly. After that, their needs for affiliation were measured. The results of Experiment 1 showed that participants are more risk-averse when the outcome is determined by an anonymous partner rather than a lottery mechanism. Experiment 2 found that participants who have low-need for affiliation are betrayal averse, while people with high-need for affiliation prefer lottery risk and person-based risk the same. In Study 2, 2 (sources of risk: lottery risk / person-based risk) × 2 (emotion:no fear/ fear) between-subject experiments were designed to investigate further the effect of need for affiliation on decision-making by arousing the emotion of fear that was induced through watching a horror video in Experiment 3 or describing a frightening scenario in detail in Experiment 4. When emotion of fear aroused, individuals were found more risk-averse under lottery risk, but more risk-seeking under person-based risk. In other words, the betrayal aversion phenomenon even reversed when under fear. It was also found that the need for affiliation acts as a mediator between fear and risky decision making. The findings of “betrayal aversion” and “reversed betrayal aversion” suggested that risk sources are critical to risky decision making. Not only the probabilities but also the risk sources should be considered in evaluation of utility. Compared with the decision making under lottery risk, decision under person-based risk is more complicated. When trust is violated, people may experience betrayal costs. On the contrary, if the partner is trustworthy, people may reap extra psychological benefits such as satisfying the need for affiliation. This study deepened our understanding of trust and betrayal. To encourage trust, it is important to diminish the material costs of betrayal and to emphasize the warmth of interpersonal interaction as well.

Key words: source of risk, betrayal aversion, emotion of fear, need for affiliation

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