We decompose the effect of distance on intercity retail price dispersion in US into transport and non-transport cost components. We find that distance contains more information than transport costs. Care should be taken in interpreting distance effect as transport costs only.

The extent and direction of causation between micro volatility and business cycles are debated. We examine, empirically and theoretically, the source and effects of fluctuations in the dispersion of producer-level sales and production over the business cycle. On the theoretical side, we study...

We employ a model of precautionary saving to study why household saving rates are so high in China and so low in the US. The use of recursive preferences gives a convenient decomposition of saving into precautionary and non precautionary components. This decomposition indicates that over 80...

We build a micro-founded two-country dynamic general equilibrium model in which trade responds more to a cut in tariffs in the long run than in the short run. The model introduces a time element to the fixed-variable cost trade-off in a heterogeneous producer trade model. Thus, the dynamics of...

We decompose the change in the U.S. export share of GDP into an intensive and extensive margin. We then use a model of establishment export dynamics to infer the change in marginal and fixed trade costs from 1976 to 2002. We find the fall in tariffs and transport costs account for approximately...

We develop a model of establishment dynamics consistent with the establishment level heterogeneity in exporting and productivity to analyze the welfare consequences of trade reform. Specifically, we assume that firms face an up-front, sunk cost of entering foreign markets and a smaller...

We also study the dynamics of job turnover following an unanticipated cut in tariffs. In the transition to the new steady state, we find that job turnover temporarily rises as workers are reallocated from less productive non-exporters to more productive exporters. These increases in job turnover...

The authors study a variation of the Melitz (2003) model, a monopolistically competitive model with heterogeneity in productivity across establishments and fixed costs of exporting. They calibrate the model to match the employment size distribution of US manufacturing establishments. Export...

Using firm level data, Bernard and Jensen (1995, 1999, 2001) find that exporters are bigger and more productive than non-exporters. These studies also find that the identity of exporting firms changes over time and that fixed entry and participation costs influence firm's decision to enter and...

We study the evolution of the U.S. current account in a two-country dynamic stochastic endowment model in which a single non-state contingent bond is the only internationally traded asset. The paper focuses on the world `saving glut' as the primary cause of continual deterioration in the current...