International economic integration yields large potential welfare effects, even in a static constant returns competitive world economy. Our method is novel. The effect of border barriers on trade flows is often inferred from gravity models. But their rather atheoretic structure precludes welfare...

This study quantifies the impact of traditional and new age' provisions of preferential trading arrangements (PTAs) on merchandise trade and investment. It does so by estimating gravity models of bilateral trade and investment. It finds that recent and some past PTAs are not as benign as some...

This paper considers the impact on trade of preferential arrangements in Europe since the 1950s. Using a first difference version of the gravity model, we find that the EC and EFTA altered the pattern of international trade. We also find evidence of trade diversion in several cases, notably that...

The impacts of inward FDI on host countries are frequently studied using balance-of-payments based measures of flows and stocks. These are unreliable for the purpose because, while theories of the effects of investment are based on FDI production and employment in the host country, these...

Employment at multinational enterprises (MNEs) responds to wages at the extensive margin, when an MNE enters a foreign location, and at the intensive margin, when an MNE operates existing affiliates. We present an MNE model and conditions for parametric and nonparametric identification. Prior...

The economic effects from labor market integration are crucially affected by the extent to which countries are open to trade. In this paper we build a multi-country dynamic general equilibrium model with trade in goods and labor mobility across countries to study and quantify the economic...

We develop a simple information-based model of FDI flows. On the one hand, the abundance of intangible' capital in specialized industries in the source countries, which presumably generates expertise in screening investment projects in the host countries, enhances FDI flows. On the other hand,...

We develop a simple information-based model of FDI flows in which the abundance of intangible' capital in the source countries, which generates expertise in cream-skimming investment projects in the host countries and enhances FDI flows. Corporate transparency in the host countries, on the other...

We develop a dynamic multi-country general equilibrium model to investigate forces acting on the global economy during the Great Recession and ensuing recovery. Our multi-sector framework accounts completely for countries' trade, investment, production, and GDPs in terms of different sets of...

I propose a network/search view of international trade in differentiated products. I present evidence that supports the view that proximity and common language/colonial ties are more important for differentiated products than for products traded on organized exchanges in matching international...