Summary
Using the concept of ex-post optimality, we compare different exchange rate regimes, including floating exchange rates and fixed exchange rates with a Monetary Union in a two country OLG model with stochastic endowments. The emphasis of this comparison is on the welfare consequences of agents having incorrect beliefs. We do not assume that agents can hold any beliefs, but rather that their beliefs are rational that is consistent with the observed empirical behavior of the economy. We study a large set of possible policies, but two of them have our particular interest. The first policy implies devaluations in reaction to a negative shock, while the other implies a fixed exchange rate. These policies have very different consequences. The first will for generic beliefs not result in an ex-post optimal allocation. The other policy is on the other hand always feasible and results in an ex-post optimal allocation. When the two countries form a Monetary Union, the expost optimal allocation is also achieved. The meaning of “endogenous uncertainty” as an institutionally induced uncertainty is illustrated.
I would like to thank Horace W. Brock, Gianluca Cassese, Paula Orlando, Ho-Mou Wu as well as seminar participants at Copenhagen Business School, ESEM98, Keio University, Kyoto University, Osaka University, SITE (Stanford) and University of Copenhagen for many useful comments on the paper. I am also grateful to Mark J. Garmaise, Takako Fujiwara-Greve, and an anonymous referee for many helpful suggestions for improving the paper. Without the many discussions about Rational Beliefs and related issues I have had with Mordecai Kurz over the years, the research presented here would not have been possible. Financial support from The Carlsberg Foundation, Danish Social Research Council, University of Copenhagen and SITE is gratefully acknowledged.
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References
Frankel, J.A., Froot, K.A.: Chartists, fundamentalists and trading in the foreign exchange market. American Economic Review 80, 24–38 (1990)
Goldberg, M.D., Frydman, R.: Imperfect knowledge and behavior in the foreign exchange markets. The Economic Journal 106, 869–893 (1996)
Hammond, P. : Ex-ante and ex-post welfare optimality under Uncertainty. Economica 48, 235–250 (1981)
Hauswald, R.B.H.: The excess volatility of foreign exchange rates: statistical puzzle or theoretical artifact? Kelley School of Business, Indiana University (1999)
Kareken, J., Wallace, N.: On the indeterminacy of equilibrium exchange rates. Quarterly Journal of Economics 96, 207–222 (1981)
Kurz, M.: The Kesten-Stigum model and the treatment of uncertainty in equilibrium theory. In: Balch, M.S., McFadden, D.L., Wu, S.Y. (eds.) Essays on economic behavior under uncertainty, pp. 389–399. Amsterdam: North-Holland 1974
Kurz, M.: On the structure and diversity of rational beliefs. Economic Theory 4, 977–900 (1994a). Reprinted as chapter 2 in: Kurz, M. (ed.) Endogenous economic fluctuations: studies in the theory of rational beliefs. Berlin Heidelberg New York: Springer 1997
Kurz, M.: On rational belief equilibria. Economic Theory 4, 859–976 (1994b). Reprinted as chapter 5 in: Kurz M. (ed.) Endogenous economic fluctuations: studies in the theory of rational beliefs. Berlin Heidelberg New York: Springer 1997
Kurz, M.: Endogenous economic fluctuations and rational beliefs: a general perspective. In: Kurz, M. (ed.) Endogenous economic fluctuations: studies in the theory of rational beliefs, pp. 1–37. Berlin Heidelberg New York: Springer 1997a
Kurz, M.: On the volatility of foreign exchange rates. In: Kurz, M. (ed.) Endogenous economic fluctuations: studies in the theory of rational beliefs, pp. 337–352. Berlin Heidelberg New York Springer 1997b
Kurz, M.: Heterogenous forecasting and federal reserve information. Manuscript, Stanford University (2001)
Kurz, M., Wu, H.-M. Endogenous uncertainty in a general equilibrium model with price contingent contracts. Economic Theory 8, 461–488 (1996). Reprinted as chapter 7 in: Kurz, M. (ed.) Endogenous economic fluctuations: studies in the theory of rational beliefs. Berlin Heidelberg New York: Springer 1997
Manuelli, R., Peck, J.: Exchange rate volatility in an equilibrium asset pricing model. International Economic Review 31, no. 3 (1990)
McKinnon, R.I., Pill, H.: International overborrowing. A decomposition of credit and currency risks. World Development 7, 1267–1282 (1998)
Nickelsburg, G.: Dynamic exchange rate equilibria with uncertain government policy. Review of Economic Studies 51, 509–520 (1984)
Neumeyer, P.A.: Currencies and the allocation of risk: the welfare effects of a monetary union. American Economic Review 88, 245–259 (1998)
Nielsen, C.K.: Weakly rational beliefs, structural independence and rational belief structures. Ph.D. Dissertation, Stanford University, unpublished (1994)
Nielsen, CK.: Rational belief structures and rational belief equilibria. Economic Theory 8, 399–422 (1996). Reprinted as chapter 6 in: Kurz, M. (ed.) Endogenous economic fluctuations: studies in the theory of rational beliefs. Berlin Heidelberg New York: Springer 1997
Nielsen, CK.: Floating exchange rates versus a monetary union under rational beliefs: the role of endogenous uncertainty. Discussion Paper, University of Copenhagen (1997)
Nielsen, CK.: Stabilizing, pareto improving policies in an OLG model with incomplete markets: the rational expectations and rational beliefs case. Manuscript, University of Copenhagen (2001)
Obstfeld, M., Rogoff, K.: New directions for stochastic open economy models. Journal of International Economics 50, 117–153 (2000)
Sibert, A.: The risk premium in the foreign exchange market. Journal of Money, Credit, and Banking 21, 49–65 (1989)
Taylor, M.P.: The economics of exchange rates. Journal of Economic Literature 33,13–41(1995)
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Nielsen, C.K. (2004). Floating exchange rates versus a monetary union under rational beliefs: the role of endogenous uncertainty. In: Aliprantis, C.D., Arrow, K.J., Hammond, P., Kubler, F., Wu, HM., Yannelis, N.C. (eds) Assets, Beliefs, and Equilibria in Economic Dynamics. Studies in Economic Theory, vol 18. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-05858-9_8
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