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Bubbles and Crashes in a Behavioural Finance Model

  • De Grauwe, Paul

    ()

    (University of Leuven)

  • Grimaldi, Marianna

    ()

    (Research Department, Central Bank of Sweden)

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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Paper provided by Sveriges Riksbank (Central Bank of Sweden) in its series Working Paper Series with number 164.

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Length: 44 pages
Date of creation: 01 May 2004
Date of revision:
Handle: RePEc:hhs:rbnkwp:0164
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Sveriges Riksbank, SE-103 37 Stockholm, Sweden

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Web page: http://www.riksbank.com/
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  12. Kandel, Eugene & Pearson, Neil D, 1995. "Differential Interpretation of Public Signals and Trade in Speculative Markets," Journal of Political Economy, University of Chicago Press, vol. 103(4), pages 831-72, August.
  13. Shang-Jin Wei & Jungshik Kim, 1997. "The Big Players in the Foreign Exchange Market: Do They Trade on Information or Noise?," NBER Working Papers 6256, National Bureau of Economic Research, Inc.
  14. Meese, Richard A. & Rogoff, Kenneth, 1983. "Empirical exchange rate models of the seventies : Do they fit out of sample?," Journal of International Economics, Elsevier, vol. 14(1-2), pages 3-24, February.
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  18. Blanchard, Olivier Jean, 1979. "Speculative bubbles, crashes and rational expectations," Economics Letters, Elsevier, vol. 3(4), pages 387-389.
  19. Yin-Wong Cheung & Menzie D. Chinn & Ian W. Marsh, 2000. "How Do UK-Based Foreign Exchange Dealers Think Their Market Operates?," NBER Working Papers 7524, National Bureau of Economic Research, Inc.
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  24. De Long, J Bradford & Andrei Shleifer & Lawrence H. Summers & Robert J. Waldmann, 1990. "Noise Trader Risk in Financial Markets," Journal of Political Economy, University of Chicago Press, vol. 98(4), pages 703-38, August.
  25. Lux, T. & M. Marchesi, . "Volatility Clustering in Financial Markets: A Micro-Simulation of Interacting Agents," Discussion Paper Serie B 437, University of Bonn, Germany, revised Jul 1998.
  26. Benoit Mandelbrot, 2015. "The Variation of Certain Speculative Prices," World Scientific Book Chapters, in: THE WORLD SCIENTIFIC HANDBOOK OF FUTURES MARKETS, chapter 3, pages 39-78 World Scientific Publishing Co. Pte. Ltd..
  27. Kenneth A. Froot & Jeffrey A. Frankel, 1986. "Interpreting Tests of Forward Discount Bias Using Survey Data on Exchange Rate Expectations," NBER Working Papers 1963, National Bureau of Economic Research, Inc.
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