Learning Dynamics in a Nonlinear Stochastic Model of Exchange Rates
This paper considers a version of the Dornbusch model of exchange rate dynamics which allows a nonlinear domestic demand for foreign assets function and imperfect substitutability between domestic and foreign interest bearing assets. Expectations of exchange rate changes are modelled as adaptive with perfect foresight being obtained as a limiting case. For sufficiently rapid speed of adjustment of expectations the model is able to generate cyclical behaviour of the exchange rate and expectations of its change. In the perfect foresight limit the cycles become relaxation cycles. To this underlying model of the fundamentals a white noise "news" process is added. Agents are assumed to attempt to learn about the system dynamics and the link between such learning and exchange rate volatility is studied. Two learning scenarios are considered. In the first scenario economic agents are regarded as a uniformly well-informed group of sophisticated traders. In the second scenario a group of "naive" traders coexist with the sophisticated traders. We find that both learning scenarios lead to increased volatility. However this effect increases in proportion to the weight of the "naive" traders.
|Date of creation:||01 May 1996|
|Date of revision:|
|Contact details of provider:|| Postal: PO Box 123, Broadway, NSW 2007, Australia|
Phone: +61 2 9514 7777
Fax: +61 2 9514 7711
Web page: http://www.uts.edu.au/about/uts-business-school/finance
More information through EDIRC
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Gray, Malcolm R & Turnovsky, Stephen J, 1979. "The Stability of Exchange Rate Dynamics under Perfect Myopic Foresight," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 20(3), pages 643-60, October.
- Guido Tabellini, 1987.
"Learning and the Volatility of Exchange Rates,"
UCLA Economics Working Papers
434, UCLA Department of Economics.
- Karacaoglu, Girol & Ursprung, Heinrich W., 1988. "Exchange rate dynamics under gradual portfolio adjustment," Journal of Macroeconomics, Elsevier, vol. 10(4), pages 565-589.
- Hsieh, David A, 1989. "Testing for Nonlinear Dependence in Daily Foreign Exchange Rates," The Journal of Business, University of Chicago Press, vol. 62(3), pages 339-68, July.
- Chiarella, Carl, 1990. "Excessive exchange rate variability : A possible explanation using nonlinear economic dynamics," European Journal of Political Economy, Elsevier, vol. 6(3), pages 315-352, December.
- Papell, David H., 1992. "Exchange rate and price dynamics under adaptive and rational expectations: An empirical analysis," Journal of International Money and Finance, Elsevier, vol. 11(4), pages 382-396, August.
- Dornbusch, Rudiger, 1976. "Expectations and Exchange Rate Dynamics," Journal of Political Economy, University of Chicago Press, vol. 84(6), pages 1161-76, December.
When requesting a correction, please mention this item's handle: RePEc:uts:wpaper:64. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Duncan Ford)
If references are entirely missing, you can add them using this form.