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Bubbles and Crashes in a Behavioural Finance Model

Listed author(s):
  • Paul De Grauwe
  • Marianna Grimaldi

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-2004/wp-cesifo-2004-05/cesifo1_wp1194.pdf
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Paper provided by CESifo Group Munich in its series CESifo Working Paper Series with number 1194.

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Date of creation: 2004
Handle: RePEc:ces:ceswps:_1194
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  11. Blanchard, Olivier Jean, 1979. "Speculative bubbles, crashes and rational expectations," Economics Letters, Elsevier, vol. 3(4), pages 387-389.
  12. Kurz, Mordecai, 1994. "On the Structure and Diversity of Rational Beliefs," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 4(6), pages 877-900, October.
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  19. 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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  23. Lux, T. & M. Marchesi, "undated". "Volatility Clustering in Financial Markets: A Micro-Simulation of Interacting Agents," Discussion Paper Serie B 437, University of Bonn, Germany, revised Jul 1998.
  24. Cheung, Yin-Wong & Chinn, Menzie David & Marsh, Ian W, 1999. "How Do UK-Based Foreign Exchange Dealers Think Their Market Operates?," CEPR Discussion Papers 2230, C.E.P.R. Discussion Papers.
  25. 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 831-872, August.
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  29. Isard,Peter, 1995. "Exchange Rate Economics," Cambridge Books, Cambridge University Press, number 9780521460477, May.
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