I develop a model of firm-to-firm search and matching to show that the impact of falling trade costs on firm sourcing decisions and consumer welfare depends on the relative size of search externalities in domestic and international markets. These externalities can be positive if firms share...

It has been argued that the increasing importance of global value chains necessitates a modification of conventional competitiveness measures. We compile a broad dataset including value added trade, gross exports and conventional and value added based real exchange rates. To sharply focus on...