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Non-Bayesian Updating: a Theoretical Framework

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Author Info
Larry Epstein () (University of Rochester)
Jawwad Noor () (University of Rochester)
Alvaro Sandroni () (J.L.Kellogg School of Management, MEDS, Northwestern University)

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Abstract

This paper models an agent in a multi-period setting who does not update according to Bayes. Rule, and who is self-aware and anticipates her updating behavior when formulating plans. Choice-theoretic axiomatic foundations are provided. Then the model is specialized axiomatically to capture updating biases that re.ect excessive weight given to (i) prior be- liefs, or alternatively, (ii) the realized sample. Finally, the paper describes a counterpart of the exchangeable Bayesian model, where the agent tries to learn about parameters, and some answers are provided to the question, "what does a non-Bayesian updater learn?"

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File URL: http://rcer.econ.rochester.edu/RCERPAPERS/rcer_518.pdf
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Publisher Info
Paper provided by University of Rochester - Center for Economic Research (RCER) in its series RCER Working Papers with number 518.

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Length: 49 pages
Date of creation: Jul 2005
Date of revision:
Handle: RePEc:roc:rocher:518

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Postal: UNIVERSITY OF ROCHESTER, CENTER FOR ECONOMIC RESEARCH, DEPARTMENT OF ECONOMICS, HARKNESS 231 ROCHESTER NEW YORK 14627 U.S.A.

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Keywords: skewed returns

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This paper has been announced in the following NEP Reports: References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
  1. Faruk Gul & Wolfgang Pesendorfer, 2004. "Self-Control and the Theory of Consumption," Econometrica, Econometric Society, vol. 72(1), pages 119-158, 01. [Downloadable!] (restricted)
    Other versions:
  2. Jawwad Noor, 2005. "Temptation, Welfare and Revealed Preference," Microeconomics 0509009, EconWPA. [Downloadable!]
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  3. Matthew Rabin, 1998. "Psychology and Economics," Journal of Economic Literature, American Economic Association, vol. 36(1), pages 11-46, March. [Downloadable!] (restricted)
  4. Epstein, Larry G. & Peters, Michael, 1999. "A Revelation Principle for Competing Mechanisms," Journal of Economic Theory, Elsevier, vol. 88(1), pages 119-160, September. [Downloadable!] (restricted)
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  5. Leonid Kogan & Stephen Ross & Jiang Wnag & Mark Westerfield, 2003. "The Price Impact and Survival of Irrational Traders," NBER Working Papers 9434, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  6. Eddie Dekel, 1997. "A Unique Subjective State Space for Unforeseen Contingencies," Discussion Papers 1202, Northwestern University, Center for Mathematical Studies in Economics and Management Science. [Downloadable!]
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  7. Matthew Rabin, 2002. "Inference By Believers In The Law Of Small Numbers," The Quarterly Journal of Economics, MIT Press, vol. 117(3), pages 775-816, August. [Downloadable!] (restricted)
  8. Epstein, Larry G., 1983. "Stationary cardinal utility and optimal growth under uncertainty," Journal of Economic Theory, Elsevier, vol. 31(1), pages 133-152, October. [Downloadable!] (restricted)
  9. 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. [Downloadable!]
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  10. Faruk Gul & Wolfgang Pesendorfer, 2001. "Temptation and Self-Control," Econometrica, Econometric Society, vol. 69(6), pages 1403-1435, November. [Downloadable!] (restricted)
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  11. Kogan, Leonid & Ross, Stephen & Wang, Jiang & Westerfield, Mark, 2003. "The Price Impact and Survival of Irrational Traders," Working papers 4293-03, Massachusetts Institute of Technology (MIT), Sloan School of Management. [Downloadable!]
  12. Brandenburger Adam & Dekel Eddie, 1993. "Hierarchies of Beliefs and Common Knowledge," Journal of Economic Theory, Elsevier, vol. 59(1), pages 189-198, February. [Downloadable!] (restricted)
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(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Chambers, Christopher P. & Hayashi, Takashi, 2005. "Bayesian consistent prior selection," Working Papers 1238, California Institute of Technology, Division of the Humanities and Social Sciences. [Downloadable!]
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