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A Bayesian Approach to Uncentainty Aversion

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  • Yoram Halevy
  • Vincent Feltkamp

Abstract

The Ellsberg paradox demonstrates that people's beliefs over uncertain events might not be representable by subjective probability. We show that if a risk averse decision maker, who has a well defined Bayesian prior, perceives an Ellsberg type decision problem as possibly composed of a bundle of several positively correlated problems, she will be uncertainty averse. We generalize this argument and derive sufficient conditions for uncertainty aversion. Copyright 2005, Wiley-Blackwell.

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Paper provided by Penn Economics Department in its series Penn CARESS Working Papers with number f17f3e2c6ad93e4b53fd58fc9b88a886.

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Handle: RePEc:cla:penntw:f17f3e2c6ad93e4b53fd58fc9b88a886

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  1. Uzi Segal, 1985. "The Ellsberg Paradox and Risk Aversion: An Anticipated Utility Approach," UCLA Economics Working Papers 362, UCLA Department of Economics.
  2. Hoffman, Elizabeth & McCabe, Kevin & Smith, Vernon L, 1996. "Social Distance and Other-Regarding Behavior in Dictator Games," American Economic Review, American Economic Association, vol. 86(3), pages 653-60, June.
  3. Machina, Mark J & Schmeidler, David, 1992. "A More Robust Definition of Subjective Probability," Econometrica, Econometric Society, vol. 60(4), pages 745-80, July.
  4. Gilboa, Itzhak & Schmeidler, David, 1989. "Maxmin expected utility with non-unique prior," Journal of Mathematical Economics, Elsevier, vol. 18(2), pages 141-153, April.
  5. Sarin, R. & Wakker, P.P., 1996. "A Single-Stage Approach to Anscombe and Aumann's Expected Utility," Discussion Paper 1996-45, Tilburg University, Center for Economic Research.
  6. Aumann, Robert J., 1997. "Rationality and Bounded Rationality," Games and Economic Behavior, Elsevier, vol. 21(1-2), pages 2-14, October.
  7. Camerer, Colin & Weber, Martin, 1992. " Recent Developments in Modeling Preferences: Uncertainty and Ambiguity," Journal of Risk and Uncertainty, Springer, vol. 5(4), pages 325-70, October.
  8. David Schmeidler, 1989. "Subjective Probability and Expected Utility without Additivity," Levine's Working Paper Archive 7662, David K. Levine.
  9. Rothschild, Michael & Stiglitz, Joseph E., 1970. "Increasing risk: I. A definition," Journal of Economic Theory, Elsevier, vol. 2(3), pages 225-243, September.
  10. Gilboa, Itzhak, 1987. "Expected utility with purely subjective non-additive probabilities," Journal of Mathematical Economics, Elsevier, vol. 16(1), pages 65-88, February.
  11. Larry Epstein, 1997. "Uncertainty Aversion," Working Papers epstein-97-01, University of Toronto, Department of Economics.
  12. Yaari, Menahem E, 1987. "The Dual Theory of Choice under Risk," Econometrica, Econometric Society, vol. 55(1), pages 95-115, January.
  13. Sarin, Rakesh K & Wakker, Peter, 1992. "A Simple Axiomatization of Nonadditive Expected Utility," Econometrica, Econometric Society, vol. 60(6), pages 1255-72, November.
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Cited by:
  1. Al-Najjar, Nabil I. & Weinstein, Jonathan, 2013. "A Bayesian Model of Knightian Uncertainty," Economics Series 300, Institute for Advanced Studies.
  2. Takashi Kamihigashi & John Stachurski, 2014. "Partial Stochastic Dominance," Discussion Paper Series DP2014-23, Research Institute for Economics & Business Administration, Kobe University.
  3. Gregory DeAngelo & Gary Charness, 2012. "Deterrence, expected cost, uncertainty and voting: Experimental evidence," Journal of Risk and Uncertainty, Springer, vol. 44(1), pages 73-100, February.
  4. Pierre Fleckinger, 2007. "On Multiagent Moral Hazard under Technological Uncertainty," Working Papers hal-00240716, HAL.
  5. Yang, Chun-Lei & Yao, Lan, 2011. "Ellsberg Paradox and Second-order Preference Theories on Ambiguity: Some New Experimental Evidence," MPRA Paper 28531, University Library of Munich, Germany.
  6. Zvi Safra & Uzi Segal, 2005. "Are Universal Preferences Possible? Calibration Results for Non-Expected Utility Theories," Boston College Working Papers in Economics 633, Boston College Department of Economics.
  7. Rick Harbaugh, 2005. "Prospect Theory or Skill Signaling?," Working Papers 2005-06, Indiana University, Kelley School of Business, Department of Business Economics and Public Policy.
  8. Mark Dean & Pietro Ortoleva, 2012. "Allais, Ellsberg, and Preferences for Hedging," Working Papers 2012-2, Brown University, Department of Economics.
  9. Rasmusen, Eric, 2010. "Career concerns and ambiguity aversion," Economics Letters, Elsevier, vol. 108(2), pages 175-177, August.
  10. Alfred Müller & Marco Scarsini, 2002. "Even Risk-Averters may Love Risk," Theory and Decision, Springer, vol. 52(1), pages 81-99, February.
  11. repec:clg:wpaper:2013-27 is not listed on IDEAS
  12. Christoph Kuzmics, 2012. "Inferring preferences from choices under uncertainty," Working Papers 462, Bielefeld University, Center for Mathematical Economics.

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