This paper uses a database covering the universe of French firms for the period 1990-2007 to provide a forensic account of the role of individual ifrms in generating aggregate fluctuations. We set up a simple multi-sector model of heterogeneous firms selling to multiple markets to motivate a...

This paper analyzes theoretically and empirically the impact of comparative advantage in international trade on fertility. It builds a model in which industries differ in the extent to which they use female relative to male labor and countries are characterized by Ricardian comparative advantage...

This timely book deploys new tools and measures to understand how global production networks change the nature of global economic interdependence, and how that in turn changes our understanding of which policies are appropriate in this new environment. Bringing to bear an array of the latest...

One of the most striking aspects of the recent recession is the collapse in international trade. This paper uses disaggregated quarterly and monthly data on U.S. imports and exports to shed light on the anatomy of this collapse. We find that the recent reduction in trade relative to overall...

This paper evaluates the welfare impact of observed levels of migration and remittances in both origins and destinations, using a quantitative multi- sector model of the global economy calibrated to aggregate and firm-level data on 60 developed and developing countries. Our framework accounts...

We estimate productivities at the sector level for 72 countries and 5 decades, and examine how they evolve over time in both developed and developing countries. In both country groups, comparative advantage has become weaker: productivity grew systematically faster in sectors that were initially...

This paper proposes a new channel through which international trade affects macroeconomic volatility. We study a multi-country model with heterogeneous firms that are subject to idiosyncratic firm-specific shocks. When the distribution of firm sizes follows a power law with exponent sufficiently...

This paper investigates the welfare gains from European trade integration, and the role of comparative advantage in determining the magnitude of those gains. We use a multi-sector Ricardian model implemented on 75 countries, and compare welfare in the 2000s to a counterfactual scenario in which...

Using an industry-level dataset of production and trade spanning 75 countries and 5 decades, and a fully specified multi-sector Ricardian model, we estimate productivities at the sector level and examine how they evolve over time in both developed and developing countries. We find that in both...