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Alternative TitleThe Formation Mechanism of Ambiguity Aversion:A Perspective Based on the Evaluability Hypothesis
徐富明1; 张军伟1; 刘腾飞1; 蒋多1; 文桂婵1
Source Publication心理科学
Contribution Rank2
Other AbstractAmbiguity aversion refers to the phenomenon that people prefer events with known probabilities to similar ambiguous events in which the decision maker does not know the values of the probabilities. Since ambiguity aversion was proposed by Ellsberg in 1961, there have been three main models accounting for ambiguity aversion: the other evaluation hypothesis, the competence hypothesis and the comparative ignorance hypothesis. The other evaluation hypothesis suggests that increasing the number of people watching a decision enhances ambiguity aversion, and enhances it more than other factors that researchers manipulate.The competence hypothesis suggests that people prefer betting on their own judgment to an equiprobable chance event only when they consider themselves knowledgeable, but not otherwise. The comparative ignorance hypothesis suggests that ambiguity aversion increases with the perception that others are more competent and more knowledgeable. To investigate the influence of joint evaluation and separate evaluation on individuals’ ambiguity aversion, a 2 (ambiguous event vs. risky event) ×2 ( joint evaluation vs. separate evaluation) mixed experimental design was adopted. In the 1first experiment, the subjects were required to indicate their WTP of ambiguous events and risky events. In the 2nd experiment, every piece of experimental episode consisted of "below" and "not below" conditions under which the subjects were required to indicate their WTP. The research revealed that there was no significant difference in WTP between ambiguous events and risky events when evaluated simultaneously, when they were separately evaluated, there was a significant difference in WTP between ambiguous events and risky events. The results indicate that, when risky events and ambiguous events are evaluated simultaneously, people opt for ambiguity aversion; in case of a separate evaluation, however, ambiguity aversion will disappear.
Keyword模糊规避 同时评价 单独评价
Subject Area认知心理学
Indexed ByCSCD
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Document Type期刊论文
Corresponding Author徐富明
Recommended Citation
GB/T 7714
徐富明,张军伟,刘腾飞,等. 模糊规避的形成机制:基于可评价性假设的视角[J]. 心理科学,2012,35(1):177-179.
APA 徐富明,张军伟,刘腾飞,蒋多,&文桂婵.(2012).模糊规避的形成机制:基于可评价性假设的视角.心理科学,35(1),177-179.
MLA 徐富明,et al."模糊规避的形成机制:基于可评价性假设的视角".心理科学 35.1(2012):177-179.
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