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Unique Equilibrium in a Model of Self-Fulfilling Currency Attacks

Stephen Morris and Hyun Song Shin
The American Economic Review
Vol. 88, No. 3 (Jun., 1998), pp. 587-597
Stable URL: http://www.jstor.org/stable/116850
Page Count: 11
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Unique Equilibrium in a Model of Self-Fulfilling Currency Attacks
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Abstract

Even though self-fulfilling currency attacks lead to multiple equilibria when fundamentals are common knowledge, we demonstrate the uniqueness of equilibrium when speculators face a small amount of noise in their signals about the fundamentals. This unique equilibrium depends not only on the fundamentals, but also on financial variables, such as the quantity of hot money in circulation and the costs of speculative trading. In contrast to multiple equilibrium models, our model allows analysis of policy proposals directed at curtailing currency attacks.

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