This paper shows that the R&D intensity of an industry plays an important role in determining international trade patterns via its effect on scale economies. I first develop a model of trade with heterogeneous firms where firms compete with each other by spending on fixed product development...

We develop and test a theory of efficient international trade. Efficiency gains arise through lower trade costs faced by ‘trade specialists’, whose superiority over ‘common traders’ manifests itself through lower trade costs. To test our theory, we construct and deploy a novel dataset...

We develop and test a theory of efficient international trade. Efficiency gains arise through lower trade costs faced by 'trade specialists', whose superiority over 'common traders' manifests itself through lower trade costs. To test our theory, we construct and deploy a novel dataset based on...

Is the variation in bilateral trade flows across countries primarily due to differences in the number of exporting firms (the extensive margin) or in the average size of an exporter (the intensive margin)? And how does this affect the estimation and quantitative implications of the Melitz (2003)...

Small and medium-sized enterprises (SMEs) play an important role in generating economic activity and employment in developing and developed countries. However, partly due to remaining at-the-border trade costs, SMEs continue to be less represented in international trade – as direct exporters...

This paper provides a broad overview of some of the issues that digital trade raises for ASEAN countries and its MSMEs, including new opportunities that digitalisation presents for ASEAN firms to increase trade. However, it shows that adoption of relatively simple digital tools, such as...

New empirical and theoretical work has highlighted the importance of multi-product firms in international tradeflows. We examine multi-product exporters in the small open economy of Belgium, considering their importance and the relationship between the margins of trade and firm productivity,...

In 2018 and 2019, the US administration increased tariffs on imports from China. Did these tariffs lead to more US imports from other countries such as Mexico? Using highly disaggregated data on the universe of Mexican firm-level exports, we find evidence of trade diversion from China to Mexico....

Larger Indian firms selling inputs to other firms tend to have more customers, tend to be used more intensively by their customers, and tend to have larger customers. Motivated by these regularities, I propose a novel empirical model of trade featuring endogenous formation of input-output...

What are the pro-competitive consequences of trade in frictional labor markets? This paper develops and estimates a dynamic general equilibrium trade model to show that the interplay between endogenously variable markups in product markets and frictions in labor markets has important...