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Efficient Allocations under Ambiguity


  • Tomasz Strzalecki
  • Jan Werner


An important implication of the expected utility model under risk aversion is that if agents have the same probability belief, then the efficient allocations under uncertainty are comonotone with the aggregate endowment, and if their beliefs are concordant, then the efficient allocations are measurable with respect to the aggregate endowment. We study these two properties of efficient allocations for models of preferences that exhibit ambiguity aversion using the concept of conditional belief, which we introduce in this paper. We provide characterizations of such conditional beliefs for the standard models of preferences used in applications. ?

Suggested Citation

  • Tomasz Strzalecki & Jan Werner, "undated". "Efficient Allocations under Ambiguity," Working Paper 8325, Harvard University OpenScholar.
  • Handle: RePEc:qsh:wpaper:8325

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    References listed on IDEAS

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    Cited by:

    1. Gottardi, Piero & Tallon, Jean Marc & Ghirardato, Paolo, 2017. "Flexible contracts," Games and Economic Behavior, Elsevier, vol. 103(C), pages 145-167.
    2. Werner, Jan, 2011. "Risk aversion for variational and multiple-prior preferences," Journal of Mathematical Economics, Elsevier, vol. 47(3), pages 382-390.
    3. Han Ozsoylev & Jan Werner, 2011. "Liquidity and asset prices in rational expectations equilibrium with ambiguous information," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 48(2), pages 469-491, October.
    4. Chakravarty, Surajeet & Kelsey, David, 2015. "Sharing ambiguous risks," Journal of Mathematical Economics, Elsevier, vol. 56(C), pages 1-8.
    5. Corbae, Dean & Marimon, Ramon, 2011. "Introduction to Incompleteness and Uncertainty in Economics," Journal of Economic Theory, Elsevier, vol. 146(3), pages 775-784, May.
    6. repec:spr:joecth:v:64:y:2017:i:2:d:10.1007_s00199-016-0979-y is not listed on IDEAS
    7. Piero Gottardi & Jean-Marc Tallon & Paolo Ghirardato, 2015. "Flexible contracts," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) hal-01238046, HAL.
    8. : Kostas Koufopoulos & : Roman Kozhan, 2012. "Optimal Insurance under Advserse Selection and Ambiguity Aversion," Working Papers wpn12-07, Warwick Business School, Finance Group.
    9. Araujo A. & Chateauneuf A. & Gama-Torres J. & Novinski R., 2014. "General equilibrium, risk taking and volatility," Working Papers 2014-181, Department of Research, Ipag Business School.
    10. Luciano Castro & Alain Chateauneuf, 2011. "Ambiguity aversion and trade," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 48(2), pages 243-273, October.
    11. Alain Chateauneuf & Luciano De Castro, 2011. "Ambiguity Aversion and Absence of Trade," Discussion Papers 1535, Northwestern University, Center for Mathematical Studies in Economics and Management Science.

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