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Fundamental and Non-Fundamental Equilibria in the Foreign Exchange Market. A Behavioural Finance Framework

  • Paul de Grauwe
  • Roberto Dieci
  • Marianna Grimaldi
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    We develop a simple model of the exchange rate in which agents optimize their portfolio and use different forecasting rules. They check the profitability of these rules ex post and select the more profitable one. This model produces two kinds of equilibria, a fundamental and a bubble one. In a stochastic environment the model generates a complex dynamics in which bubbles and crashes occur at unpredictable moments. We contrast these ”behavioural” bubbles with ”rational” bubbles.

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    File URL: http://www.cesifo-group.de/portal/page/portal/DocBase_Content/WP/WP-CESifo_Working_Papers/wp-cesifo-2005/wp-cesifo-2005-03/cesifo1_wp1431.pdf
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    Paper provided by CESifo Group Munich in its series CESifo Working Paper Series with number 1431.

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    Date of creation: 2005
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    Handle: RePEc:ces:ceswps:_1431
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    6. Dilip Abreu & Markus K. Brunnermeier, 2002. "Bubbles and crashes," LSE Research Online Documents on Economics 24905, London School of Economics and Political Science, LSE Library.
    7. Charles Engel & James Morley, 2000. "The Adjustment of Prices and the Adjustment of the Exchange Rate," Discussion Papers in Economics at the University of Washington 0009, Department of Economics at the University of Washington.
    8. Richard K. Lyons, 2006. "The Microstructure Approach to Exchange Rates," MIT Press Books, The MIT Press, edition 1, volume 1, number 026262205x, June.
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    11. Wei, S.J. & Kim, J., 1999. "The Big Players in the Foreign Exchange Market: Do They Trade on Information or Noise?," Papers 5, Chicago - Graduate School of Business.
    12. Lux, Thomas & Sornette, Didier, 2002. "On Rational Bubbles and Fat Tails," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 34(3), pages 589-610, August.
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    20. Baxter, M. & Stockman, A.C., 1988. "Business Cycles And The Exchange Rate System: Some International Evidence," RCER Working Papers 140, University of Rochester - Center for Economic Research (RCER).
    21. Brunnermeier, Markus K., 2001. "Asset Pricing under Asymmetric Information: Bubbles, Crashes, Technical Analysis, and Herding," OUP Catalogue, Oxford University Press, number 9780198296980, March.
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