This paper constructs a theoretical model of international trade in order to examine an optimal exchange rate regime for (Asian) emerging market economies that export goods to the United States, Japan, and neighboring countries. The optimality of the exchange rate regime is defined as minimizing the fluctuation of trade balances, in the environment where the yen–dollar exchange rate fluctuates exogenously. Since the de facto dollar peg regime is blamed as one of the factors that caused the Asian currency crisis, the question of the optimal exchange rate regime is quite relevant in Asia. The novelty of this paper is to show how an emerging market economy's choice of the exchange rate regime (or weights in the basket) is dependent on the neighboring country's. The dollar weights in the currency baskets of the two countries are determined as a Nash equilibrium. We show that they may be stuck at the dollar peg system in both stable and unstable equilibrium cases. Even in a stable equilibrium case, there are multiple equilibria and a coordination failure may occur. J. Japan. Int. Econ., September 2002, 16(3), pp. 317–334. Department of Commerce and Management, Hitotsubashi University, Kunitachi, Tokyo 186-8601, Japan; and Institute of Economic Research, Hitotsubashi University, Kunitachi, Tokyo 186-8601, Japan; Research Center for Advanced Science and Technology, University of Tokyo, Meguro, Tokyo 153-8904, Japan. © 2002 Elsevier Science (USA). Journal of Economic Literature Classification Numbers: F31, F33, O11.
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