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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," Documents de travail du Centre d'Economie de la Sorbonne 09064, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne, revised Nov 2009.
  2. Peter Klibanoff & Massimo Marinacci & Sujoy Mukerji, 2002. "A smooth model of decision making under ambiguity," ICER Working Papers - Applied Mathematics Series 11-2003, ICER - International Centre for Economic Research, revised Apr 2003.
  3. 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.
  4. Louis Eeckhoudt & Harris Schlesinger, 2006. "Putting Risk in Its Proper Place," American Economic Review, American Economic Association, vol. 96(1), pages 280-289, March.
  5. Raphaël Giraud & Jean-Marc Tallon, 2009. "Are beliefs a matter of taste ? A case for objective imprecise information," Documents de travail du Centre d'Economie de la Sorbonne 09086, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
  6. 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.
  7. 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.
  8. Arthur Snow, 2010. "Ambiguity and the value of information," Journal of Risk and Uncertainty, Springer, vol. 40(2), pages 133-145, April.
  9. Gollier, Christian, 2009. "Portfolio Choices and Asset Prices: The Comparative Statics of Ambiguity Aversion," TSE Working Papers 09-068, Toulouse School of Economics (TSE).
  10. Ian Jewitt & Sujoy Mukerji, 2011. "Ordering Ambiguous Acts," Economics Series Working Papers 553, University of Oxford, Department of Economics.
  11. 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.
  12. 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.
  13. Larry G. Epstein, 2010. "A Paradox for the “Smooth Ambiguity” Model of Preference," Econometrica, Econometric Society, vol. 78(6), pages 2085-2099, November.
  14. Gilboa, Itzhak & Schmeidler, David, 1989. "Maxmin expected utility with non-unique prior," Journal of Mathematical Economics, Elsevier, vol. 18(2), pages 141-153, April.
  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. 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.
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