中国科学院心理研究所机构知识库

借助权重函数π的导出,Kahneman和Tversky解释了一些期望效用理论无法预测和描述的抉择(如艾勒悖论),使预期理论成为风险条件下行为决策的重要描述性模型.文章回顾了推导权重函数的基本假设及权重函数各特性的推导过程,介绍沿用相同的推导逻辑提出的对该函数特性的质疑,及Tversky对质疑的回应和解释.冀透过对权重函数的审视,将质疑的焦点转向最大化原则本身。

A weighting function π was developed by prospect theory to explain that Allais Paradox arises because people behave so as to maximize overall value rather than EU.The way that the decision weight π was derived from choices was reviewed.The controversies and questions to the propoesd properties of subadditive,overweighted low probabilities,subcertainty and subproportionality were presented and discussed with Tversky s own wxplanation and answers.An attempt was made to draw the research attention from which f...