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Incomplete Information Games with Ambiguity Averse Players

机译:歧义厌恶玩家的不完整信息游戏

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We study incomplete information games with ambiguity averse players. Our focus is on equilibrium concepts satisfying sequential optimality-each player's strategy is optimal at each information set given opponents' strategies. We show sequential optimality, which does not make any explicit assumption on updating, is equivalent to sequential optimality with respect to beliefs updated using a particular generalization of Bayesian updating. Ambiguity aversion expands the set of equilibria compatible with players sharing common ambiguous beliefs. We connect ambiguity aversion with belief robustness. Examples illustrate new strategic behavior, including strategic use of ambiguity, under ambiguity aversion.
机译:我们研究有歧义厌恶玩家的不完整信息游戏。我们关注满足连续最优性的均衡概念-每个参与者的策略在给定对手策略的情况下在每个信息集都是最优的。我们显示了顺序最优,它没有对更新做任何明确的假设,对于使用贝叶斯更新的特定概括进行更新的信念而言,等效于顺序最优。歧义厌恶扩大了与拥有共同模棱两可信念的玩家兼容的均衡范围。我们将歧义厌恶与信念稳健性联系起来。实例说明了在歧义规避下新的战略行为,包括歧义的战略使用。

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  • 来源
    《American economic journal》 |2020年第2期|135-187|共53页
  • 作者单位

    Faculty of Engineering Tel Aviv University Tel Aviv 69978 Israel;

    Department of Managerial Economics and Decision Sciences Kellogg School of Management Northwestern University Evanston IL 60208;

    School of Economics and Finance Queen Mary University of London London E1 4NS United Kingdom;

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