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Working Paper
Global Inflation, Regional Factors
This paper shows that global inflation dynamics have a sizable regional component. Using a balanced panel of 61 countries that starts in 1970, we document that while the global factor, defined as the dominant principal component, explains a large portion of inflation variation in advanced economies, a model with only one principal component is less successful for developing countries. By contrast, a hierarchical dynamic factor model, which includes a global (unconstrained) factor and regional (restricted) factors, performs substantially better for emerging market and developing economies. The ...
Working Paper
International Trade Policy During a Pandemic
This paper studies international trade policy during a pandemic. We consider a multi-sector small open economy model with essential and non-essential goods. Essential goods provide utility relative to a reference consumption level, and a pandemic consists of an increase in this reference level along with higher import and export prices of these goods. The economy produces domestic varieties of both types of goods subject to sectoral adjustment costs, and varieties are traded internationally subject to trade barriers. We find that trade provides limited relief to the increased demand for ...
Working Paper
COVID-19 Time-Varying Reproduction Numbers Worldwide: An Empirical Analysis of Mandatory and Voluntary Social Distancing
This paper estimates time-varying COVID-19 reproduction numbers worldwide solely based on the number of reported infected cases, allowing for under-reporting. Estimation is based on a moment condition that can be derived from an agent-based stochastic network model of COVID-19 transmission. The outcomes in terms of the reproduction number and the trajectory of per-capita cases through the end of 2020 are very diverse. The reproduction number depends on the transmission rate and the proportion of susceptible population, or the herd immunity effect. Changes in the transmission rate depend on ...
Working Paper
Shortages of Critical Goods in a Global Economy: Optimal Trade and Industrial Policy
This paper studies the role for optimal trade and industrial policy to mitigate shortages of critical goods following global shocks. We develop a dynamic model of trade with producers of essential and non-essential goods owned by heterogeneous households under incomplete markets. Shocks that increase global demand for critical goods lead to underinvestment relative to an economy with a representative household or complete markets. Trade exacerbates the shock as producers reallocate domestic sales toward exports. Shortages can be mitigated, increasing welfare, by taxing exports while ...
Working Paper
International Trade of Essential Goods During a Pandemic
This paper studies the role of international trade of essential goods during a pandemic. We consider a multi-country multi-sector model with essential and non-essential goods. Essential goods provide utility relative to a reference consumption level, and a pandemic consists of an increase in this reference level. Each country produces domestic varieties of both types of goods using capital and labor subject to sectoral adjustment costs, and all varieties are traded internationally subject to trade barriers. We study the role of international trade of essential goods in mitigating or ...
Working Paper
Shortages of Critical Goods in a Global Economy: Optimal Trade and Industrial Policy
This paper studies optimal trade and industrial policy in response to shortages of critical goods following global shocks. We develop a dynamic open-economy model with essential and non-essential goods, heterogeneous households, and incomplete financial markets. When global demand for essential goods rises, households fail to internalize how their borrowing choices affect aggregate interest rates, leading to excessive discounting of future returns and underinvestment. Trade amplifies shortages as producers reallocate supply toward exports. Calibrated to the U.S. during COVID-19, the model ...
Working Paper
International Trade of Essential Goods During a Pandemic
This paper studies the role of international trade of essential goods during a pandemic. We consider a multi-country, multi-sector model with essential and non-essential goods. Essential goods provide utility relative to a reference consumption level, and a pandemic consists of an increase in this reference level. Each country produces domestic varieties of both types of goods using capital and labor subject to sectoral adjustment costs, and all varieties are traded internationally subject to trade barriers. We study the role of international trade of essential goods in mitigating or ...
Working Paper
Shock Transmission through Cross-Border Bank Lending: Credit and Real Effects
We study the transmission of financial shocks across borders through international bank connections. Using data on cross-border interbank loans among 6,000 banks during 1997-2012, we estimate the effect of asset-side exposures to banks in countries experiencing systemic banking crises on profitability, credit, and the performance of borrower firms. Crisis exposures reduce bank returns and tighten credit conditions for borrowers, constraining investment and growth. The effects are larger for foreign borrowers, including in countries not experiencing banking crises. Our results document the ...
Working Paper
Shortages of Critical Goods in a Global Economy: Optimal Trade and Industrial Policy
This paper studies shortages of critical goods in a global economy and the role for policy. We develop a dynamic general equilibrium model of trade with producers of essential and non-essential goods owned by heterogeneous households under incomplete markets. A global increase in demand for critical goods increases prices and production, but there is underinvestment relative to an economy with a representative household or complete markets. Trade exacerbates the shock as producers reallocate domestic sales toward exports. Shortages can be mitigated, increasing welfare, by taxing exports while ...
Working Paper
Voluntary and Mandatory Social Distancing: Evidence on COVID-19 Exposure Rates from Chinese Provinces and Selected Countries
This paper considers a modification of the standard Susceptible-Infected-Recovered (SIR) model of epidemics that allows for different degrees of compulsory as well as voluntary social distancing. It is shown that the fraction of the population that self-isolates varies with the perceived probability of contracting the disease. Implications of social distancing both on the epidemic and recession curves are investigated and their trade off is simulated under a number of different social distancing and economic participation scenarios. We show that mandating social distancing is very effective ...