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Smooth Ambiguity Aversion in the Small and in the Large

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  • Loïc Berger

Abstract

In this paper I use the smooth ambiguity model developed by Klibanoff, Marinacci, and Mukerji (2005) to define the concepts of ambiguity and uncertainty premia in a way analogous to what Pratt (1964) did in the risk theory literature. I show that those concepts may be useful to quantify the effect ambiguity has on the welfare of economic agents. I also provide local approximations of these premia and show the link that exists between them when comparing different degrees of ambiguity aversion not only in the small, but also in the large.

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File URL: https://dipot.ulb.ac.be/dspace/bitstream/2013/95831/4/2011-020-BERGER_smooth.pdf
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Bibliographic Info

Paper provided by ULB -- Universite Libre de Bruxelles in its series Working Papers ECARES with number ECARES 2011-020.

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Length: 35 p.
Date of creation: Aug 2011
Date of revision:
Publication status: Published by:
Handle: RePEc:eca:wpaper:2013/95831

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Keywords: ambiguity aversion; non-expected utility; uncertainty;

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References

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  1. Johanna Etner & Meglena Jeleva & Jean-Marc Tallon, 2009. "Decision theory under uncertainty," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-00429573, HAL.
  2. Gollier, Christian, 2009. "Portfolio Choices and Asset Prices: The Comparative Statics of Ambiguity Aversion," IDEI Working Papers 357, Institut d'Économie Industrielle (IDEI), Toulouse, revised 2011.
  3. Sujoy Mukerji & Peter Klibanoff, 2002. "A Smooth Model of Decision,Making Under Ambiguity," Economics Series Working Papers 113, University of Oxford, Department of Economics.
  4. Fabio Maccheroni & Massimo Marinacci & Aldo Rustichini, 2006. "Ambiguity Aversion, Robustness, and the Variational Representation of Preferences," Econometrica, Econometric Society, vol. 74(6), pages 1447-1498, November.
  5. Raphaël Giraud & Jean-Marc Tallon, 2009. "Are Beliefs a Matter of Taste ? A case for Objective Imprecise Information," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-00442869, HAL.
  6. Al-Najjar, Nabil I. & Weinstein, Jonathan, 2009. "The Ambiguity Aversion Literature: A Critical Assessment," Economics and Philosophy, Cambridge University Press, vol. 25(03), pages 249-284, November.
  7. Ian Jewitt & Sujoy Mukerji, 2011. "Ordering Ambiguous Acts," Economics Series Working Papers 553, University of Oxford, Department of Economics.
  8. LANGE Andreas & TREICH Nicolas, 2007. "Uncertainty, Learning and Ambiguity in Economic Models on Climate Policy: Some Classical Results and New Directions," LERNA Working Papers 07.16.237, LERNA, University of Toulouse.
  9. Einhorn, Hillel J & Hogarth, Robin M, 1986. "Decision Making under Ambiguity," The Journal of Business, University of Chicago Press, vol. 59(4), pages S225-50, October.
  10. Loïc Berger, 2011. "Does Ambiguity Aversion Raise the Optimal Level of Effort? A Two-Period Model," Working Papers ECARES ECARES 2011-021, ULB -- Universite Libre de Bruxelles.
  11. Louis Eeckhoudt & Harris Schlesinger, 2006. "Putting Risk in Its Proper Place," American Economic Review, American Economic Association, vol. 96(1), pages 280-289, March.
  12. Gilboa, Itzhak & Schmeidler, David, 1989. "Maxmin expected utility with non-unique prior," Journal of Mathematical Economics, Elsevier, vol. 18(2), pages 141-153, April.
  13. Siniscalchi, Marciano, 2009. "Two Out Of Three Ain'T Bad: A Comment On “The Ambiguity Aversion Literature: A Critical Assessment”," Economics and Philosophy, Cambridge University Press, vol. 25(03), pages 335-356, November.
  14. Larry G. Epstein, 2010. "A Paradox for the “Smooth Ambiguity” Model of Preference," Econometrica, Econometric Society, vol. 78(6), pages 2085-2099, November.
  15. Al-Najjar, Nabil I. & Weinstein, Jonathan, 2009. "Rejoinder: The “Ambiguity Aversion Literature: A Critical Assessment”," Economics and Philosophy, Cambridge University Press, vol. 25(03), pages 357-369, November.
  16. Arthur Snow, 2010. "Ambiguity and the value of information," Journal of Risk and Uncertainty, Springer, vol. 40(2), pages 133-145, April.
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