The Melitz model highlights the importance of the extensive margin (the number of firms exporting) for trade flows …. Using the World Bank's Exporter Dynamics Database (EDD) featuring firm-level exports from 50 countries, we find that around … 50% of variation in exports is along the extensive margin --- a quantitative victory for the Melitz framework. The …

international trade and economic geography. We build a model with agglomeration economies where firms with heterogeneous … productivity sort across city sizes and select into exporting. The model allows us to study the geographic implications of trade … policy, as well as the international trade effects of urban policies. We show that (i) lifting restrictions on housing supply …

the WTO, its exports and export participation would have been 30 and 37 percent lower respectively …

This paper examines the evidence on technology diffusion through trade in differentiated intermediate goods. Because … countries matters for productivity, because a country that imports primarily from technological leaders receives more technology … embodied in intermediate goods than another that imports primarily from follower countries. I try to quantify the importance of …

We use Belgian data with information on domestic firm-to-firm sales and foreign trade transactions to study how … international trade affects firms' unit cost and the consumer's real wage. We show theoretically that the gains from trade depend on …

bias towards skilled occupations. We use a novel measure of the propensity of a firm to engage in technology investment and … from 2009 to 2013. We find that techies and importing of intermediate inputs raise skill-biased productivity, while imports … productivity. The techie and trade effects are large, and can account for much of the aggregate increase in skilled employment from …

Specialization alters the incidence of manufacturing trade costs to buyers and sellers, with pro-and anti … predicted local trade to predicted frictionless local trade) and the Total Factor Productivity effect of changing incidence. A …

disaggregate trade data, e.g. Gabon's imports of Gambian groundnuts, we structurally estimate the impact that new imports have had …Starting with Romer [1987] and Rivera-Batiz-Romer [1991] economists have been able to model how trade enhances growth … through the creation and import of new varieties. In this framework, international trade increases economic output through two …

crucial part in accounting for income differences. We also relate technology transfer to imports, showing that imports are … cross-country income variation, not much is known on the source of these technology differences. This paper examines cross …-country income differences in terms of factor accumulation, domestic R&D, and foreign technological spillovers. The empirical …