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Working Paper
Vehicle currency
While in principle, international payments could be carried out using any currency or set of currencies, in practice, the U.S. dollar is predominant in international trade and financial flows. The dollar acts as a "vehicle currency" in the sense that agents in nondollar economies will generally engage in currency trade indirectly using the U.S. dollar rather than using direct bilateral trade among their own currencies. Indirect trade is desirable when there are transactions costs of exchange.> ; This paper constructs a dynamic general equilibrium model of a vehicle currency. We explore the ...
Working Paper
Dollar Bloc or Dollar Block: External Currency Pricing and the East Asian Crisis
This paper provides a quantitative investigation of the East Asian crisis of 1997-1999. The two essential features of the crisis that we focus on are (a) the crisis was a regional phenomenon; the depth and severity of the crisis were exacerbated by a large decline in regional demand, and (b) the practice of setting export goods prices in dollars (which we document empirically) led to a powerful internal propagation effect of the crisis within the region, contributing greatly to the decline in regional trade flows. We construct a model with these two features and show that it can do a ...
Working Paper
Leverage constraints and the international transmission of shocks
Recent macroeconomic experience has drawn attention to the importance of interdependence among countries through financial markets and institutions, independently of traditional trade linkages. This paper develops a model of the international transmission of shocks due to interdependent portfolio holdings among leverage-constrained financial institutions. In the absence of leverage constraints, international portfolio diversification has no implications for macroeconomic comovements. When leverage constraints bind, however, the presence of diversified portfolios in combination with these ...
Working Paper
International financial integration and crisis contagion
International financial integration helps to diversify risk but also may increase the transmission of crises across countries. We provide a quantitative analysis of this trade-off in a two-country general equilibrium model with endogenous portfolio choice and collateral constraints. Collateral constraints bind occasionally, depending upon the state of the economy and levels of inherited debt. The analysis allows for different degrees of financial integration, moving from financial autarky to bond market integration and equity market integration. Financial integration leads to a significant ...
Working Paper
Price setting in a leading Swiss online supermarket
We study a newly released data set of scanner prices for food products in a large Swiss online supermarket. We find that average prices change about every two months, but when we exclude temporary sales, prices are extremely sticky, changing on average once every three years. Non-sale price behavior is broadly consistent with menu cost models of sticky prices. When we focus specifically on the behavior of sale prices, however, we find that the characteristics of price adjustment seems to be substantially at odds with standard theory.
Conference Paper
Global current account adjustment: a decomposition
The rising current account deficit in the USA has attracted considerable attention in recent years. We use the ?business cycle accounting? methodology to identify the principal distortions that have affected the external accounts of the US. In particular, we measure distortions in the optimality conditions of a simple two-country general equilibrium model using data from the US and the other G7 countries. We then feed these measured distortions into the model individually and use the simulated counterfactual paths of the current account to determine the contribution of each of these ?wedges? ...
Working Paper
Sudden Stops in Emerging Economies: The Role of World Interest Rates and Foreign Exchange Intervention
Emerging economies are prone to ‘sudden stops’, characterized by a collapse in external borrowing and aggregate demand. Sudden stops may be triggered by a spike in world interest rates, which causes rapid private sector deleveraging. In response to a rise in interest rates, deleveraging is individually rational, but in the aggregate, the effect on the real exchange rate may tighten borrowing constraints so much that it precipitates a large crisis. A central bank can intervene by selling foreign reserves when world interest rates are rising, and prevent excess aggregate deleveraging. But ...
Working Paper
Fiscal deficits, debt, and monetary policy in a liquidity trap
The macroeconomic response to the economic crisis has revived old debates about the usefulness of monetary and fiscal policy in fighting recessions. Without the ability to further lower interest rates, policy authorities in many countries have turned to expansionary fiscal policies. Recent literature argues that government spending may be very effective in such environments. But a critical element of the stimulus packages in all countries was the use of deficit financing and tax reductions. This paper explores the role of government debt and deficits in an economy constrained by the zero ...
Working Paper
Capital Controls as Macro-prudential Policy in a Large Open Economy
The literature on optimal capital controls for macro-prudential policy has focused on capital controls in a small open economy. This ignores the spillover effects to the rest of the world. This paper re-examines the case for capital controls in a large open economy, where domestic financial constraints may bind following a large negative shock. There is a tension between the desire to tax inflows to manipulate the terms of trade and tax outflows for macro-prudential purposes. Non-cooperative capital controls are ineffective as macro-prudential policy. Cooperative policy will ignore ...
Working Paper
What determines European real exchange rates?
We study a newly constructed panel data set of relative prices of a large number of consumer goods among 31 European countries. We find that there is a substantial and nondiminishing deviation from PPP at all levels of aggregation, even among euro zone members. However, real exchange rates are very closely tied to relative GDP per capita within Europe, both across countries and over time. This relationship is highly robust at all levels of aggregation. We construct a simple two-sector endowment economy model of real exchange rate determination. Simulating the model using the historical ...