The paper examines the effects of exchange rate fluctuations on real output and the price level in a sample of 33 developing countries. The theoretical model decomposes movements in the exchange rate into anticipated and unanticipated components. Unanticipated currency fluctuations help to determine aggregate demand through exports, imports, and the demand for domestic currency, and aggregate supply through the cost of imported intermediate goods. Anticipated exchange rate depreciation, through the supply channel, has limited effects on output growth and inflation. Unanticipated currency fluctuations appear more significant, with varying effects on output growth and price inflation across developing countries.

The paper examines the effects of exchange rate fluctuations on real output and the price level in a sample of 33 developing countries. The theoretical model decomposes movements in the exchange rate into anticipated and unanticipated components. Unanticipated currency fluctuations help to determine aggregate demand through exports, imports, and the demand for domestic currency, and aggregate supply through the cost of imported intermediate goods. Anticipated exchange rate depreciation, through the supply channel, has limited effects on output growth and inflation. Unanticipated currency fluctuations appear more significant, with varying effects on output growth and price inflation across developing countries.

The paper examines the asymmetric effects of exchange rate fluctuations on real output and price in developing countries. The theoretical model decomposes movements in the exchange rate into anticipated and unanticipated components. Unanticipated currency fluctuations determine aggregate demand through exports, imports, and the demand for domestic currency, and determine aggregate supply through the cost of imported intermediate goods. The evidence indicates that the supply channel leads to output contraction and price inflation in the face of unanticipated currency depreciation. In contrast, the reduction in net exports determines output contraction without reducing price inflation in the face of unanticipated currency appreciation.

The paper develops and tests a model of a developing economy that incorporates trade and capital restrictions, illegal transactions, a parallel foreign exchange market, currency substitution features, and forward-looking rational expectations. Temporary expansionary demand policies are associated with an increase in output and prices, a fall in the stock of net foreign assets, and a depreciation of the parallel exchange rate. The speed of adjustment is inversely related to the degree of rationing in the official foreign currency market. A once-for–all devaluation of the official exchange rate has no long-term effect on the premium.

In spite of the attention paid exchange rates in recent economic debates on developing countries, relatively few studies have systematically analyzed in detail the various ramifications of exchange rate policy in these countries. In this new volume from the National Bureau of Economic Research, leading economists use rigorous models to tackle various exchange rate issues, while also illuminating policy implications that emerge from their analyses. The volume, divided into four main sections, addresses: the role of exchange rates in stabilization programs and the adjustment process; the importance of exchange rate policy during liberalization reform in developing countries; exchange rate problems relevant and unique to developing countries, illustrated by case studies; and the problems defining, measuring, and identifying determinants of real exchange rates. Authors of individual papers examine the relation between commercial policies and exchange rates, the role of exchange rate policy in stabilization programs, the effectiveness of devaluations as a policy tool, and the interaction between exchange rate terms of trade an capital flow. This research will not only prove crucial to our understanding of the role of exchange rates in developing countries, but will clearly set the standard for future work in the field.