Estimates of the elasticity of substitution between domestic and foreign varieties are small in macroeconomic data, but substantially larger in disaggregated microeconomic studies. This may be an artifact of heterogeneity. We use disaggregated multilateral trade data to structurally identify...

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...

The paper offers an empirical taxonomy of the factors driving China's current account. A simple present-value model with non-tradeable goods explains more than 70 percent of current account variability over the period 1982-2007, including the persistent surpluses since 2001. Expected increases...

Motivated by recent empirical work, this paper formalizes a theory of competitive savings - an arms race in household savings for mating competition that is made more fierce by an increase in the male-to-female ratio in the pre-marital cohort. Relative to the empirical work, the theory can...

We present a microfounded two-country model of global imbalances and debt deleveraging. A sustained rise in saving in one country can lead to a worldwide fall in interest rates and an accumulation of debt in the other country. When a subsequent deleveraging shock occurs, interest rates are...

We define decoupling as an increase in the cross-country heterogeneity in long-term growth expectations. We identify growth expectations from a cointegrating relation between a country's output level and its stock market valuation. Fluctuations in this output-price or yp-ratio reflect changes in...