We propose an exchange rate model that can explain both the observed volatility and the persistence of real and nominal exchange rate movements and thus in some measure resolves Rogoff’s (1996) purchasing power parity puzzle. Our analysis reconciles the well-known difficulties in beating the...

Tests of the null hypothesis of stationarity against the unit root alternative play an increasingly important role in empirical work in macroeconomics and in international finance. We show that the use of conventional asymptotic critical values for stationarity tests may cause extreme size...

This Paper documents four basic facts about investment goods and investment prices. First, investment has a very significant non-tradable component in the form of construction services. Second, distributions services (wholesaling, retailing, and transportation) are much less important for...

This Paper studies the role played by distribution costs in shaping the behaviour of the real exchange rate during exchange-rate-based stabilizations. We document that distribution costs are very large for the average consumer good: the represent more than 40% of the retail price in the US and...

There is a well-known set of empirical regularities that describe the experience of countries that peg their exchange rate as part of a macroeconomic adjustment programme. Following-the-peg economies tend to experience an increase in GDP, a large expansion of production in the non-tradable...

This Paper studies the behaviour of inflation after nine large post-1990 contractionary devaluations. A salient feature of the data is that inflation is low relative to the rate of devaluation. We argue that distribution costs and substitution away from imports to lower quality local goods can...

This paper proposes a theory of twin banking-currency crises in which both fundamentals and self-fulfilling beliefs play crucial roles. Fundamentals determine whether crises will occur. Self-fulfilling beliefs determine when they occur. The fundamental that causes ‘twin crises’ is government...

This paper argues that the recent Southeast Asian currency crises was caused by large prospective deficits associated with implicit bailout guarantees to failing banking systems. We articulate this view using a simple dynamic general equilibrium model whose key feature is that a speculative...

High-interest-rate currencies tend to appreciate relative to low-interest-rate currencies. We argue that adverse-selection problems between participants in foreign exchange markets can account for this `forward premium puzzle.' The key feature of our model is that the adverse selection problem...

Large devaluations are generally associated with large declines in real exchange rates. We develop a model which embodies two complementary forces that account for the large declines in the real exchange rate that occur in the aftermath of large devaluations. The first force is sticky...