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Welfare-improving ambiguity in insurance markets with asymmetric information

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  • Koufopoulos, Kostas
  • Kozhan, Roman

Abstract

We consider a model of competitive insurance markets involving both asymmetric information and ambiguity about the accident probability. We show that there can exist a full-insurance pooling equilibrium. We also present an example where an increase in ambiguity leads to a strict Pareto improvement. Higher ambiguity relaxes high-risks' incentive compatibility constraint and allows low risks to buy more insurance. Higher ambiguity also deteriorates low risks' expected utility from holding an uncertain prospect. If the former effect dominates, the expected utility of low risks increases and given that high risks' utility remains unaffected, the increase in ambiguity implies a strict Pareto improvement.

Suggested Citation

  • Koufopoulos, Kostas & Kozhan, Roman, 2014. "Welfare-improving ambiguity in insurance markets with asymmetric information," Journal of Economic Theory, Elsevier, vol. 151(C), pages 551-560.
    • Handle: RePEc:eee:jetheo:v:151:y:2014:i:c:p:551-560
    DOI: 10.1016/j.jet.2013.11.003
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    1. Johanna Etner & Meglena Jeleva & Jean‐Marc Tallon, 2012. "Decision Theory Under Ambiguity," Journal of Economic Surveys, Wiley Blackwell, vol. 26(2), pages 234-270, April.
    2. Arthur Snow, 2010. "Ambiguity and the value of information," Journal of Risk and Uncertainty, Springer, vol. 40(2), pages 133-145, April.
    3. Quiggin, John, 1982. "A theory of anticipated utility," Journal of Economic Behavior & Organization, Elsevier, vol. 3(4), pages 323-343, December.
    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. Peter Klibanoff & Massimo Marinacci & Sujoy Mukerji, 2005. "A Smooth Model of Decision Making under Ambiguity," Econometrica, Econometric Society, vol. 73(6), pages 1849-1892, November.
    6. Gilboa, Itzhak & Schmeidler, David, 1989. "Maxmin expected utility with non-unique prior," Journal of Mathematical Economics, Elsevier, vol. 18(2), pages 141-153, April.
    7. Peter Bossaerts & Paolo Ghirardato & Serena Guarnaschelli & William R. Zame, 2010. "Ambiguity in Asset Markets: Theory and Experiment," The Review of Financial Studies, Society for Financial Studies, vol. 23(4), pages 1325-1359, April.
    8. Johanna Etner & Meglena Jeleva & Jean-Marc Tallon, 2009. "Decision theory under uncertainty," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-00429573, HAL.
    9. Michael Rothschild & Joseph Stiglitz, 1976. "Equilibrium in Competitive Insurance Markets: An Essay on the Economics of Imperfect Information," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 90(4), pages 629-649.
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    Cited by:

    1. Jeleva, Meglena & Tallon, Jean-Marc, 2016. "Ambiguïté, comportements et marchés financiers," L'Actualité Economique, Société Canadienne de Science Economique, vol. 92(1-2), pages 351-383, Mars-Juin.
    2. Glenn W. Harrison & Jia Min Ng, 2019. "Behavioral insurance and economic theory: A literature review," Risk Management and Insurance Review, American Risk and Insurance Association, vol. 22(2), pages 133-182, July.
    3. Wanda Mimra & Achim Wambach, 2019. "Contract withdrawals and equilibrium in competitive markets with adverse selection," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 67(4), pages 875-907, June.
    4. Robin Chark & Vincent Mak & A. V. Muthukrishnan, 2020. "The premium as informational cue in insurance decision making," Theory and Decision, Springer, vol. 88(3), pages 369-404, April.
    5. Nihad Aliyev, 2019. "Financial Markets with Multidimensional Uncertainty," PhD Thesis, Finance Discipline Group, UTS Business School, University of Technology, Sydney, number 2-2019.
    6. Hiroaki Sakamoto, 2014. "Public Bads, Heterogeneous Beliefs, and the Value of Information," Discussion papers e-13-009, Graduate School of Economics Project Center, Kyoto University.
    7. Chiara FALCO & Douch KONG & Valentina ROTONDI & Valeria SPELTA, 2016. "Investment, Insurance and Weather Shocks: Evidence from a Lab Experiment in Cambodia," Departmental Working Papers 2016-10, Department of Economics, Management and Quantitative Methods at Università degli Studi di Milano.
    8. Falco, Chiara & Rotondi, Valentina & Kong, Douch & Spelta, Valeria, 2021. "Investment, insurance and weather shocks: Evidence from Cambodia," Ecological Economics, Elsevier, vol. 188(C).
    9. Mingli Zheng & Chong Wang & Chaozheng Li, 2016. "Insurance Contracts with Adverse Selection When the Insurer Has Ambiguity about the Composition of the Consumers," Annals of Economics and Finance, Society for AEF, vol. 17(1), pages 179-206, May.
    10. Aliyev, Nihad & He, Xue-Zhong, 2023. "Ambiguous price formation," Journal of Mathematical Economics, Elsevier, vol. 106(C).
    11. Takaaki Hamada, 2023. "Endogenous timing in tax competition: The effect of asymmetric information," Journal of Public Economic Theory, Association for Public Economic Theory, vol. 25(3), pages 570-614, June.

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    More about this item

    Keywords

    Ambiguity aversion; Asymmetric information; Welfare improvement;
    All these keywords.

    JEL classification:

    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • G22 - Financial Economics - - Financial Institutions and Services - - - Insurance; Insurance Companies; Actuarial Studies

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