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Uncertainty Averse Bank Runners

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Author Info
Guido Cozzi
Paolo Giordani

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Abstract

In the framework of a Diamond-Dybvig-Peck-Shell banking model, in which a broad class of feasible contractual arrangements is allowed and which admits a run equilibrium, we stress the assumption that depositors are uncertain of their position in the queue when expecting a run. The formalization of the depositor's attitude towards this form of uncertainty is inspired by the multiple prior maxmin expected utility (MEU) theory axiomatized by Gilboa and Schmeidler (1989). We prove that there exists a positive measure set of subjective prior beliefs, obtained from the minimization over the set of admissible priors, for which the bank run equilibrium disappears. The implication is that `suspension schemes' are valuable since, in addition to the improvement in risk-sharing among agents (Wallace (1990)), they may undermine panic-driven bank runs.

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Publisher Info
Paper provided by Sapienza University of Rome, Department of Public Economics in its series Working Papers with number 71.

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Length: 13 pages
Date of creation: May 2004
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Handle: RePEc:sap:wpaper:71

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Related research
Keywords: Uncertainty; Multi-Prior Beliefs; Suspension Schemes; Panic-Driven Bank Runs.;

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Find related papers by JEL classification:
D81 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Criteria for Decision-Making under Risk and Uncertainty
G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Mortgages

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  1. Edward J. Green & Ping Lin, 2000. "Diamond and Dybvig's classic theory of financial intermediation : what's missing?," Quarterly Review, Federal Reserve Bank of Minneapolis, issue Win, pages 3-13. [Downloadable!]
  2. Neil Wallace, 1988. "Another attempt to explain an illiquid banking system: the Diamond and Dybvig model with sequential service taken seriously," Quarterly Review, Federal Reserve Bank of Minneapolis, issue Fall, pages 3-16. [Downloadable!]
  3. Sarin, Rakesh K & Wakker, Peter, 1992. "A Simple Axiomatization of Nonadditive Expected Utility," Econometrica, Econometric Society, vol. 60(6), pages 1255-72, November. [Downloadable!] (restricted)
  4. Epstein, Larry G & Wang, Tan, 1994. "Intertemporal Asset Pricing Under Knightian Uncertainty," Econometrica, Econometric Society, vol. 62(2), pages 283-322, March. [Downloadable!] (restricted)
  5. Gilboa, Itzhak & Schmeidler, David, 1989. "Maxmin expected utility with non-unique prior," Journal of Mathematical Economics, Elsevier, vol. 18(2), pages 141-153, April. [Downloadable!] (restricted)
  6. Schmeidler, David, 1989. "Subjective Probability and Expected Utility without Additivity," Econometrica, Econometric Society, vol. 57(3), pages 571-87, May. [Downloadable!] (restricted)
  7. Diamond, Douglas W & Dybvig, Philip H, 1983. "Bank Runs, Deposit Insurance, and Liquidity," Journal of Political Economy, University of Chicago Press, vol. 91(3), pages 401-19, June. [Downloadable!] (restricted)
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  8. James Peck & Karl Shell, 2003. "Equilibrium Bank Runs," Journal of Political Economy, University of Chicago Press, vol. 111(1), pages 103-123, February. [Downloadable!] (restricted)
    Other versions:
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