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Rational speculation and exchange rates

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  • Duarte, Margarida
  • Stockman, Alan C.

Abstract

In this paper we develop a general equilibrium model of exchange rates where expectations of future variables directly affect the current exchange rate through an 'asset-market' term. This term, which results from the assumptions of incomplete asset markets and segmented product markets, does not appear in most models of exchange rates and it allows for changes in expectations about variables at t+1 to affect the date-t exchange rates without requiring changes in other contemporaneous variables. Therefore, the model has the potential to deliver changes in exchange rates, resulting from rational speculation, without much change in consumption allocations or goods' prices, making it consistent with the common view that exchange rates behave like asset prices. To implement the idea that exchange rates respond to expectations about future economic conditions, we introduce a regime variable governing the covariance structure of shocks to productivity and money growth in each country. Changes in the information variable are intended to generate changes in home and foreign agents' perceptions of the relative risks of holding the nominal asset. The model is roughly consistent with the common view that exchange rates behave like asset prices. However, it does not generate a sufficient degree of rational speculation to explain either observed variation of risk premia in foreign exchange markets or observed variation in exchange rates.

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Bibliographic Info

Article provided by Elsevier in its journal Journal of Monetary Economics.

Volume (Year): 52 (2005)
Issue (Month): 1 (January)
Pages: 3-29

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Handle: RePEc:eee:moneco:v:52:y:2005:i:1:p:3-29

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Web page: http://www.elsevier.com/locate/inca/505566

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  1. Maurice Obstfeld & Kenneth Rogoff, 2000. "The Six Major Puzzles in International Macroeconomics: Is There a Common Cause?," NBER Working Papers 7777, National Bureau of Economic Research, Inc.
  2. Svensson, Lars E O & van Wijnbergen, Sweder, 1989. "Excess Capacity, Monopolistic Competition, and International Transmission of Monetary Disturbances," Economic Journal, Royal Economic Society, vol. 99(397), pages 785-805, September.
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  4. Maurice Obstfeld & Kenneth S. Rogoff, 1996. "Foundations of International Macroeconomics," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262150476.
  5. Alan C. Stockman, 1978. "A Theory of Exchange Rate Determination," UCLA Economics Working Papers 122, UCLA Department of Economics.
  6. V. V Chari & Patrick J. Kehoe & Ellen R. McGrattan, 2002. "Can Sticky Price Models Generate Volatile and Persistent Real Exchange Rates?," Review of Economic Studies, Oxford University Press, vol. 69(3), pages 533-563.
  7. David K. Backus & Allan W. Gregory & Chris I. Telmer, 1990. "Accounting for Forward Rates in Markets for Foreign Currency," Working Papers 792, Queen's University, Department of Economics.
  8. Maurice Obstfeld & Kenneth Rogoff, 1996. "Exchange Rate Dynamics Redux," NBER Working Papers 4693, National Bureau of Economic Research, Inc.
  9. Hodrick, Robert J., 1989. "Risk, uncertainty, and exchange rates," Journal of Monetary Economics, Elsevier, vol. 23(3), pages 433-459, May.
  10. Dornbusch, Rudiger, 1976. "Expectations and Exchange Rate Dynamics," Journal of Political Economy, University of Chicago Press, vol. 84(6), pages 1161-76, December.
  11. Brennan, Michael J. & Xia, Yihong, 2004. "International Capital Markets and Foreign Exchange Risk," University of California at Los Angeles, Anderson Graduate School of Management qt53z0s29k, Anderson Graduate School of Management, UCLA.
  12. Dumas, Bernard, 1992. "Dynamic Equilibrium and the Real Exchange Rate in a Spatially Separated World," Review of Financial Studies, Society for Financial Studies, vol. 5(2), pages 153-80.
  13. Charles Engel, 1999. "On the Foreign Exchange Risk Premium in Sticky-Price General Equilibrium Models," International Tax and Public Finance, Springer, vol. 6(4), pages 491-505, November.
  14. Lucas, Robert Jr., 1982. "Interest rates and currency prices in a two-country world," Journal of Monetary Economics, Elsevier, vol. 10(3), pages 335-359.
  15. repec:cup:cbooks:9780521562942 is not listed on IDEAS
  16. Charles Engel, 2003. "Expenditure Switching and Exchange-Rate Policy," NBER Chapters, in: NBER Macroeconomics Annual 2002, Volume 17, pages 231-300 National Bureau of Economic Research, Inc.
  17. Michael B. Devereux & Charles Engel, 2002. "Exchange Rate Pass-Through, Exchange Rate Volatility, and Exchange Rate Disconnect," NBER Working Papers 8858, National Bureau of Economic Research, Inc.
  18. Fama, Eugene F., 1984. "Forward and spot exchange rates," Journal of Monetary Economics, Elsevier, vol. 14(3), pages 319-338, November.
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