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Exchange rate dynamics redux

Abstract: Until now, thinking on open economy macroeconomics has been largely schizophrenic. When it comes to analyzing exchange rate dynamics, and empirically-minded economist abandons modern current account models which, while theoretically coherent, fail to address the awkwward reality of sticky nominal prices. In this paper we develop an analytically tractable two-country model that marries a full account of dynamics to a supply framework based on monopolistic competition and sticky prices. It offers simple and intuitive predictions about exchange rates and current accounts that sometimes differ sharply from those of either modern flexible-price intertemporal models, or traditional sticky-price Keynesian models. The model also leads to a novel perspective on the international welfare spillovers of monetary and fiscal policies.

Authors: Maurice Obstfeld; Kenneth Rogoff

Exchange rate dynamics redux.pdf

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