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- W4308559670 abstract "We study players interacting under the veil of ignorance, who have—coarse—beliefs represented as subsets of opponents' actions. We analyze when these players follow maxmin or maxmax decision criteria, which we identify with pessimistic or optimistic attitudes, respectively. Explicitly formalizing these attitudes and how players reason interactively under ignorance, we characterize the behavioral implications related to common belief in these events: while optimism is related to Point Rationalizability, a new algorithm—Wald Rationalizability—captures pessimism. Our characterizations allow us to uncover novel results: (i) regarding optimism, we relate it to wishful thinking á la Yildiz (2007) and we prove that dropping the (implicit) “belief-implies-truth” assumption reverses an existence failure described therein; (ii) we shed light on the notion of rationality in ordinal games; (iii) we clarify the conceptual underpinnings behind a discontinuity in Rationalizability hinted in the analysis of Weinstein (2016)." @default.
- W4308559670 created "2022-11-12" @default.
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- W4308559670 date "2022-11-01" @default.
- W4308559670 modified "2023-09-27" @default.
- W4308559670 title "Optimism and pessimism in strategic interactions under ignorance" @default.
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- W4308559670 doi "https://doi.org/10.1016/j.geb.2022.10.012" @default.
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