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模糊规避的形成机制:基于可评价性假设的视角
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
2012
Source Publication心理科学
Correspondent Emailfumingxu@126.com
ISSN1671-6981
Subtype期刊论文
Volume35Issue:1Pages:177-179
Contribution Rank2
Abstract模糊规避是指在相同奖赏的情况下,决策者会力图规避从主观上判断具有模糊概率的事件而偏好具有相同精确概率的事件。本研究使用同时评价、单独评价的研究范式从随机事件和自然事件两个领域来探讨模糊规避的形成机制。研究结果表明,当风险事件和模糊事件同时评价时,个体倾向于模糊规避;当风险事件和模糊事件单独评价时,模糊规避会消失。
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
URL查看原文
Indexed ByCSCD
Language中文
CSCD IDCSCD:4465197
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Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/14752
Collection认知与发展心理学研究室
Corresponding Author徐富明
Affiliation1.华中师范大学心理学院暨湖北省人的发展与心理健康重点实验室
2.中国科学院心理研究所
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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