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Regret theory and the banking firm: The optimal bank interest margin

  • Wong, Kit Pong
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    This paper examines the optimal bank interest margin, i.e., the spread between the loan rate and the deposit rate of a bank, when the bank is not only risk-averse but also regret-averse. Regret-averse preferences are characterized by a utility function that includes disutility from having chosen ex-post suboptimal alternatives. We show that the presence of regret aversion raises or lowers the optimal bank interest margin than the one chosen by the purely risk-averse bank, depending on whether the probability of default is below or above a threshold value, respectively. Regret aversion as such makes the bank less prudent and more prone to risk-taking when the probability of default is high, thereby adversely affecting the stability of the banking system.

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    File URL: http://www.sciencedirect.com/science/article/pii/S0264999311001787
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    Article provided by Elsevier in its journal Economic Modelling.

    Volume (Year): 28 (2011)
    Issue (Month): 6 ()
    Pages: 2483-2487

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    Handle: RePEc:eee:ecmode:v:28:y:2011:i:6:p:2483-2487
    DOI: 10.1016/j.econmod.2011.07.007
    Contact details of provider: Web page: http://www.elsevier.com/locate/inca/30411

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    1. Michael Braun & Alexander Muermann, 2004. "The Impact of Regret on the Demand for Insurance," Journal of Risk & Insurance, The American Risk and Insurance Association, vol. 71(4), pages 737-767.
    2. Loomes, Graham & Sugden, Robert, 1987. "Testing for Regret and Disappointment in Choice under Uncertainty," Economic Journal, Royal Economic Society, vol. 97(388a), pages 118-29, Supplemen.
    3. Udo Broll & Kit Wong, 2010. "Banking firm and hedging over the business cycle," Portuguese Economic Journal, Springer;Instituto Superior de Economia e Gestao, vol. 9(1), pages 29-33, April.
    4. Zarruk, Emilio R., 1989. "Bank spread with uncertain deposit level and risk aversion," Journal of Banking & Finance, Elsevier, vol. 13(6), pages 797-810, December.
    5. Loomes, Graham, 1988. "Further Evidence of the Impact of Regret and Disappointment in Choice under Uncertainty," Economica, London School of Economics and Political Science, vol. 55(217), pages 47-62, February.
    6. Chang Eric C. & Moon-Whoan Rhee & Kit Pong Wong, 1995. "A note on the spread between the rates of fixed and variable rate loans," Journal of Banking & Finance, Elsevier, vol. 19(8), pages 1479-1487, November.
    7. Demirguc, Asli & Huizinga, Harry, 1999. "Determinants of Commercial Bank Interest Margins and Profitability: Some International Evidence," World Bank Economic Review, World Bank Group, vol. 13(2), pages 379-408, May.
    8. Saunders, Anthony & Schumacher, Liliana, 2000. "The determinants of bank interest rate margins: an international study," Journal of International Money and Finance, Elsevier, vol. 19(6), pages 813-832, December.
    9. Sugden Robert, 1993. "An Axiomatic Foundation for Regret Theory," Journal of Economic Theory, Elsevier, vol. 60(1), pages 159-180, June.
    10. Loomes, Graham & Starmer, Chris & Sugden, Robert, 1992. "Are Preferences Monotonic? Testing Some Predictions of Regret Theory," Economica, London School of Economics and Political Science, vol. 59(233), pages 17-33, February.
    11. David E. Bell, 1983. "Risk Premiums for Decision Regret," Management Science, INFORMS, vol. 29(10), pages 1156-1166, October.
    12. Quiggin, John, 1994. "Regret Theory with General Choice Sets," Journal of Risk and Uncertainty, Springer, vol. 8(2), pages 153-65, March.
    13. Loomes, Graham & Sugden, Robert, 1982. "Regret Theory: An Alternative Theory of Rational Choice under Uncertainty," Economic Journal, Royal Economic Society, vol. 92(368), pages 805-24, December.
    14. Taggart, Robert A, Jr & Greenbaum, Stuart I, 1978. "Bank Capital and Public Regulation," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 10(2), pages 158-69, May.
    15. Starmer, Chris & Sugden, Robert, 1993. "Testing for Juxtaposition and Event-Splitting Effects," Journal of Risk and Uncertainty, Springer, vol. 6(3), pages 235-54, June.
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