Fabrizio Perri

Financial autarky and international business cycles

We present a two-country, two-good model in which there do not exist any markets for international trade in financial assets. We compare the predictions of this model to those of two other models, one in which markets are complete and a second in which a single non-contingent bond is traded. We find that only the financial autarky model can generate volatility in the terms of trade similar to that in data for floating rate period and, at the same time, account for observed cross-country output, consumption, investment and employment correlations. We interpret our findings as evidence that the extent of international borrowing and lending opportunities is important for the international business cycle.

International Business Cycles with Endogenous Incomplete Markets

Backus, Kehoe and Kydland (1992), Baxter and Crucini (1995) and Stockman and Tesar (1995) find two major discrepancies between standard international business cycle models with complete markets and the data: In the models, cross-country correlations are much higher for consumption than for output, while in the data the opposite is true; and cross-country correlations of employment and investment are negative, while in the data they are positive. This paper introduces a friction into a standard model that helps resolve these anomalies. The friction is that international loans are imperfectly enforceable; any country can renege on its debts and suffer the consequences for future borrowing. To solve for equilibrium in this economy with endogenous incomplete markets, the methods of Marcet and Marimon (1999) are extended. Incorporating the friction helps resolve the anomalies more than does exogenously restricting the assets that can be traded.

The International Diversification Puzzle is Not as Bad as You Think

The international diversification puzzle is the fact that country portfolios are on average biased toward domestic assets, while one-good international macro models with nondiversifiable labor income risk predict the opposite pattern of diversification. This paper embeds a portfolio choice decision in a two-good international business cycle model and provides a closed-form solution for equilibrium country portfolios. Equilibrium portfolios are biased toward domestic assets because endogenous international relative price fluctuations make domestic assets a good hedge against labor income risk. Evidence from developed economies in recent years is qualitatively and quantitatively consistent with the mechanisms highlighted by the theory.

Public Versus Private Risk Sharing

Can public insurance through redistributive income taxation improve the allocation of risk in an economy in which private risk sharing is limited? The answer depends crucially on the fundamental friction that limits private risk sharing in the first place. If risk sharing is incomplete because some insurance markets are missing for model-exogenous reasons (as in Bewley, 1986 and Aiyagari, 1994) publicly provided risk sharing via a tax system generally improves on the allocation of risk. If instead private insurance markets exist but their use is limited by the absence of complete enforcement (as in Kehoe and Levine, 1993 and Kocherlakota, 1996) then the provision of public insurance can crowd out private insurance to such an extent that total consumption insurance is reduced. By reducing income risk the tax system increases the value of being excluded from private insurance markets and hence weakens the enforcement mechanism of these contracts. In this paper we theoretically characterize and numerically compute equilibria in an economy with limited enforcement and a continuum of agents facing realistic income risk and tax systems with various degrees of risk reduction (progressivity). We find that the crowding-out effect of public insurance on private insurance in the limited enforcement model can be quantitatively important, as is the positive insurance effect of taxation in the Bewley model.

On the Welfare Consequences of the Increase in Inequality in the United States

We investigate the welfare consequences of the stark increase in wage and earnings inequality in the United States over the last 30 years. Our data stems from the Consumer Expenditure Survey, which is the only U.S. dataset that contains information on wages, hours worked, earnings, and consumption for the same cross section of U.S. households. First, we document that, while the cross-sectional variation in wages and disposable earnings has significantly increased, the overall dispersion in consumption has not changed significantly. We also show that households at the bottom of the consumption distribution have increased their working hours to a larger extent than the rest of the population. To assess the magnitude and the incidence of the welfare consequences of these trends, we estimate stochastic processes for earnings, consumption, and leisure that are consistent with observed cross-sectional variability (both within and between education groups) and with household mobility patterns. In a standard lifetime utility framework, using consumption and leisure processes (as opposed to earnings processes) results in fairly robust estimates of these consequences. We find that about 60 percent of U.S. households face welfare losses and that the size of these losses ranges from 1 to 6% of lifetime consumption for different groups.

Why Has the U.S. Economy Become Less Correlated with the Rest of the World

In this paper we do two things. First we document that over the last 40 years the U.S. business cycle has become less synchronized with the cycle in the rest of the world. Second we try to explain why this has happened. We use a general-equilibrium model as a tool to discriminate between two alternative explanations: (i) a change in the nature of real shocks, and (ii) an increase in U.S. financial integration with the rest of the world. Our results indicate that financial integration has played the major role in producing the observed changes in international co-movement.

Exchange rate overshooting and the costs of floating

Currency crises are usually associated with large nominal and real depreciations. In some countries depreciations are perceived to be very costly (‘fear of floating’). In this paper we try to understand the reasons behind this fear. We first look at episodes of currency crises in the 1990s and establish that countries entering a crisis with high levels of foreign debt tend to experience large real exchange rate overshooting (devaluation in excess of the long run equilibrium level) and large output contractions. We the develop an model of an open economy with monopolistic competition and short-run price stickiness that helps to explain this evidence. The key element of the model is the presence of a margin constraint on the domestic country. Real devaluations, by reducing the value of domestic assets relative to international liabilities, make countries with high foreign debt more likely to hit the constraint. When countries hit the constraint they are forced to sell domestic assets and this causes a further devaluation of the currency (overshooting) and a reduction of their stock prices (overreaction). This fire sale can have a significant negative wealth effect. The model highlights a key tradeoff when considering fixed versus flexible exchange rate regimes; a fixed exchange regime can, by avoiding exchange rate overshooting, mitigate the negative wealth effect but at the cost of additional distortions and output drops in the short run. There are plausible parameter values under which fixed exchange rates dominate flexible from a welfare perspective.

Evaluating Asset Pricing Models with Limited Commitment Using Household Consumption Data

We evaluate the asset pricing implications of a class of models in which risk sharing is imperfect because of the limited enforcement of intertemporal contracts. Lustig (2004) has shown that in such a model the asset pricing kernel can be written as a simple function of the aggregate consumption growth rate and the growth rate of consumption of the set of households that do not face binding enforcement constraints in that state of the world. These unconstrained households have lower consumption growth rates than constrained households, i.e. they are located in the lower tail of the crosssectional consumption growth distribution. We use household consumption data from the U.S. Consumer Expenditure Survey to estimate the pricing kernel implied by the model and to evaluate its performance in pricing aggregate risk. We employ the same data to construct aggregate consumption and to derive the standard complete markets pricing kernel. We find that the limited enforcement pricing kernel generates a market price of risk that is substantially larger than the standard complete markets asset pricing kernel.

The Role of Fiscal Policy in Japan: A Quantitative Study,

We analyze the role of fiscal policy in the recent slowdown in Japan. A dynamic general equilibrium model is developed in which fiscal policy can have both expansionary effects (through increasing returns) and contractionary effects (through the increase of public debt and tax burden).

The Geography of the Great Recession

This paper documents, using county level data, some geographical features of the US business cycle over the past 30 years, with particular focus on the Great Recession. It shows that county level unemployment rates are spatially dispersed and spatially correlated, and documents how these characteristics evolve during recessions. It then shows that some of these features of county data can be generated by a model which includes simple channels of transmission of economic conditions from a county to its neighbors. The model suggests that these local channels are quantitatively important for the amplification/muting of aggregate shocks.