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An expected utility theory for state-dependent preferences

机译:状态依赖偏好的期望效用理论

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This note is a generalization and improved interpretation of the main result of Karni and Schmeidler (An Expected utility theory for state-dependent preferences. Working paper no. 48-80 of the Foerder Institute for Economic Research, Faculty of Social Sciences, Tel Aviv University, 1980). A decision-maker is supposed to possess a preference relation on acts and another preference relation on state-prize lotteries, both of which are assumed to satisfy the von Neumann-Morgenstern axioms. In addition, the two preference relations restricted to a state of nature are assumed to agree. We show that these axioms are necessary and sufficient for the existence of subjective expected utility over acts with state-dependent utility functions and a subjective probability measure. This subjective probability measure is unique when conditioned on the set of states of nature in which not all the prizes are equally desirable.
机译:本注释是对Karni和Schmeidler(基于状态的偏好的预期效用理论。)的主要结果的概括和改进的解释。特拉维夫大学社会科学学院Foerder经济研究所的工作论文第48-80号(1980)。决策者应该在行为上具有偏好关系,而在国家奖彩票上则具有另一个偏好关系,这两个假设都可以满足冯·诺伊曼-摩根斯坦特公理。另外,假定限制于自然状态的两个偏好关系是一致的。我们证明,这些公理对于主观预期效用的存在是必要的,并且具有与状态相关的效用函数和主观概率测度有关的作用。当以并非所有奖金都是同等理想的自然状态为条件时,这种主观概率测度是唯一的。

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