How do exporters expand their product scope and geographical presence? We argue that new exporters are uncertain about their profitability in different countries and products, but learn it as they start to export. As a consequence, exporters add products and countries sequentially, in an...

Recent theoretical models predict gains from international trade coming from intra-industryreallocations, due to a firm selection effect. In this paper we answer two related questions. First, whatis the magnitude of this selection effect, and how does it compare to that of intra-national trade...

We discuss how standard computable equilibrium models of trade policy can be enriched with selection effects without missing other important channels of adjustment. This is achieved by estimating and simulating a partial equilibrium model that accounts for a number of real world effects of trade...