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A Model to Analyse Financial Fragility

Author

Listed:
  • Charles A.E. Goodhart
  • Pojanart Sunirand
  • Dimitrios P. Tsomocos

Abstract

This paper sets out a tractable model which illuminates problems relating to individual bank behaviour, to possible contagious inter-relationships between banks, and to the appropriate design of prudential requirements and incentives to limit `excessive' risk-taking. Our model is rich enough to include heterogeneous agents, endogenous default, and multiple commodity, and credit and deposit markets. Yet, it is simple enough to be effectively computable and can therefore be used as a practical framework to analyse financial fragility. Financial fragility in our model emerges naturally as an equilibrium phenomenon. Among other results, a non-trivial quantity theory of money is derived, liquidity and default premia co-determine interest rates, and both regulatory and monetary policies have non-neutral effects. The model also indicates how monetary policy may affect financial fragility, thus highlighting the trade-off between financial stability and economic efficiency.

Suggested Citation

  • Charles A.E. Goodhart & Pojanart Sunirand & Dimitrios P. Tsomocos, 2003. "A Model to Analyse Financial Fragility," OFRC Working Papers Series 2003fe13, Oxford Financial Research Centre.
    • Handle: RePEc:sbs:wpsefe:2003fe13
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    File URL: http://www.finance.ox.ac.uk/file_links/finecon_papers/2003fe13.pdf
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    References listed on IDEAS

    as
    1. Tobin, James, 1982. " The Commercial Banking Firm: A Simple Model," Scandinavian Journal of Economics, Wiley Blackwell, vol. 84(4), pages 495-530.
    2. Geanakoplos, J. D. & Tsomocos, D. P., 2002. "International finance in general equilibrium," Research in Economics, Elsevier, vol. 56(1), pages 85-142, June.
    3. Tsomocos, Dimitrios P., 2003. "Equilibrium analysis, banking and financial instability," Journal of Mathematical Economics, Elsevier, vol. 39(5-6), pages 619-655, July.
    4. Tomoyuki Nakajima & Herakles Polemarchakis, 2005. "Money and Prices Under Uncertainty," Review of Economic Studies, Oxford University Press, vol. 72(1), pages 223-246.
    5. Hart, Oliver D., 1975. "On the optimality of equilibrium when the market structure is incomplete," Journal of Economic Theory, Elsevier, vol. 11(3), pages 418-443, December.
    6. Charles Goodhart, 1989. "Money, Information and Uncertainty: 2nd Edition," MIT Press Books, The MIT Press, edition 2, volume 1, number 0262071223, December.
    Full references (including those not matched with items on IDEAS)

    More about this item

    JEL classification:

    • F3 - International Economics - - International Finance
    • G3 - Financial Economics - - Corporate Finance and Governance
    • J1 - Labor and Demographic Economics - - Demographic Economics

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