Subjective Contingencies and Limited Bayesian Updating
We depart from Savage’s (1954) common state space assumption and introduce a model that allows for a subjective understanding of uncertainty. Within the revealed preference paradigm, we uniquely identify the agent’s subjective state space via her preferences conditional on incoming information. According to our representation, the agent’s subjective contingencies are coarser than the analyst’s states; she uses an additively separable utility with respect to her set of contingencies; and she adopts an updating rule that follows the Bayesian spirit but is limited by her perception of uncertainty. We illustrate our theory with an application to the Confirmatory Bias.
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- Barton L. Lipman, 1999. "Decision Theory without Logical Omniscience: Toward an Axiomatic Framework for Bounded Rationality," Review of Economic Studies, Oxford University Press, vol. 66(2), pages 339-361.
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- Larry G. Epstein, 2006.
"An Axiomatic Model of Non-Bayesian Updating,"
Review of Economic Studies,
Oxford University Press, vol. 73(2), pages 413-436.
- Larry Epstein, 2002. "An Axiomatic Model of Non-Bayesian Updating," RCER Working Papers 498, University of Rochester - Center for Economic Research (RCER), revised Jan 2005.
- Larry Epstein, 2005. "An Axiomatic Model of Non-Bayesian Updating," RCER Working Papers 521, University of Rochester - Center for Economic Research (RCER).
- Klaus Nehring, 1999. "Preference for Flexibility in a Savage Framework," Econometrica, Econometric Society, vol. 67(1), pages 101-120, January.
- Epstein, Larry G. & Seo, Kyoungwon, 2009. "Subjective states: A more robust model," Games and Economic Behavior, Elsevier, vol. 67(2), pages 408-427, November.
- Matthew Rabin & Joel L. Schrag, 1999. "First Impressions Matter: A Model of Confirmatory Bias," The Quarterly Journal of Economics, Oxford University Press, vol. 114(1), pages 37-82.
- Dekel, Eddie & Lipman, Barton L. & Rustichini, Aldo, 1998. "Recent developments in modeling unforeseen contingencies," European Economic Review, Elsevier, vol. 42(3-5), pages 523-542, May.
- Pietro Ortoleva, 2012. "Modeling the Change of Paradigm: Non-Bayesian Reactions to Unexpected News," American Economic Review, American Economic Association, vol. 102(6), pages 2410-2436, October.
- Gilboa,Itzhak, 2009. "Theory of Decision under Uncertainty," Cambridge Books, Cambridge University Press, number 9780521741231, August.
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