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Deposit insurance and regulation in a Diamond-Dybvig banking model with a risky technology (*)

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  • Denise Hazlett

    (Department of Economics, Whitman College, Walla Walla, WA 99362, USA)

Abstract

Three deposit insurance schemes are studied in a version of the Diamond-Dybvig banking model with a risky technology. The schemes include a full deposit guarantee and two alternatives which people have suggested as ways to limit the moral hazard problem of deposit insurance: deductible and coinsurance. Regulation to suppress the moral hazard problem under each scheme takes the form of solvency and incentive compatibility constraints. When the regulation is relaxed slightly, as it might be under regulatory error, the insurer's payout is lower under the alternatives than under the full guarantee. However, the coinsurance and deductible schemes are less effective at preventing bank runs than the full guarantee. Moreover, in some environments, even the full guarantee itself does not provide enough reassurance to rule out bank runs.

Suggested Citation

  • Denise Hazlett, 1997. "Deposit insurance and regulation in a Diamond-Dybvig banking model with a risky technology (*)," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 9(3), pages 453-470.
    • Handle: RePEc:spr:joecth:v:9:y:1997:i:3:p:453-470
    Note: Received: May 8, 1995; revised version August 14, 1995
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    Cited by:

    1. Samartin, Margarita, 2003. "Should bank runs be prevented?," Journal of Banking & Finance, Elsevier, vol. 27(5), pages 977-1000, May.
    2. Simas Kucinskas, 2015. "Aggregate Risk and Efficiency of Mutual Funds," Tinbergen Institute Discussion Papers 15-113/VI, Tinbergen Institute.
    3. Niinimaki, Juha-Pekka, 2002. "Do time deposits prevent bank runs?," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 12(1), pages 19-31, February.
    4. Harold Ngalawa & Fulbert Tchana Tchana & Nicola Viegi, 2016. "Banking instability and deposit insurance: The role of moral hazard," Journal of Applied Economics, Universidad del CEMA, vol. 19, pages 323-350, November.
    5. John Geanakoplos & Kieran James Walsh, 2018. "Inefficient liquidity provision," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 66(1), pages 213-233, July.
    6. Lee, Wai Sing & Kwok, Chuck C. Y., 2000. "Domestic and international practice of deposit insurance: a survey," Journal of Multinational Financial Management, Elsevier, vol. 10(1), pages 29-62, January.
    7. Antoine Martin, 2006. "Liquidity provision vs. deposit insurance: preventing bank panics without moral hazard," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 28(1), pages 197-211, May.
    8. Kučinskas, Simas, 2019. "Aggregate risk and efficiency of mutual funds," Journal of Banking & Finance, Elsevier, vol. 101(C), pages 1-11.

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