-
Views
-
Cite
Cite
Yi-Chun Chen, Alfredo Di Tillio, Eduardo Faingold, Siyang Xiong, Characterizing the Strategic Impact of Misspecified Beliefs, The Review of Economic Studies, Volume 84, Issue 4, October 2017, Pages 1424–1471, https://doi.org/10.1093/restud/rdw061
- Share Icon Share
Abstract
Previous research has established that the predictions of game theory are quite sensitive to the assumptions made about the players’ beliefs. We evaluate the severity of this robustness problem by characterizing conditions on the primitives of the model—the players’ beliefs and higher-order beliefs about the payoff-relevant parameters—for the behaviour of a given Harsanyi type to be approximated by the behaviour of (a sequence of) perturbed types. This amounts to providing belief-based characterizations of the strategic topologies of Dekel et al. (2006). We apply our characterizations to a variety of questions concerning robustness to perturbations of higher-order beliefs, including genericity of types that are consistent with a common prior, and we investigate the connections between our notions of robustness and the notion of common |$p$|-belief of Monderer and Samet (1989).