Does Exchange-Rate Stability Increase Trade and Welfare?
构建一般均衡模型研究汇率制度对贸易和福利的影响，发现基准模型中贸易不受汇率制度影响，但一般情形下两者均可更高，且贸易与福利水平无一一对应关系。
This paper develops a simple general-equilibrium framework to study the effect of the exchange-rate system on trade and welfare. An important feature of the model is deviations from purchasing-power parity, caused by rigid price setting in buyers' currency. In a benchmark model with separable preferences and only monetary shocks, trade is unaffected by the exchange-rate system, consistent with most evidence. In general, both trade and welfare can be higher under either exchange-rate system, depending on preferences and on the monetary-policy rules followed under each system. There is no one-to-one relationship between the levels of trade and welfare across exchange-rate systems.