Does adoption of broadband internet in firms enhance labor productivity and increase wages? And is this technological change skill biased or factor neutral? We exploit rich Norwegian data with firm-level information on value added, factor inputs and broadband adoption to answer these questions....

This paper modifies the heterogenous firms and trade model by Melitz (2003) by explicitly modelling the beachhead cost of a firm in a new market as a function of market size. This leads to several new predictions compared to the standard model. In particular, the productivity of non exporters...

We study the evolution of the global arms trade network using a unique dataset on all international transfers of major conventional weapons over the period 1950-2007. First, we provide a careful description of the characteristics of global arms trade using tools from social network analysis....

Intermediaries and wholesalers play an important role in international trade. This paper develops a model of international trade with heterogeneous firms that offers an explanation of the existence of wholesalers. All exporting firms have to pay a fixed cost of establishing a distribution...

We develop a model of outsourcing and trade in service inputs where the scope of tasks produced by both manufacturing firms and service providers is endogeneous. Manufacturing firms have to perform a fixed set of tasks in order to produce their final good but can decide to outsource some of...

Data on the growth performances of countries with similar comparative (dis)advantage and political institutions reveal a striking variation across world regions. While some former autocracies such as the East Asian growth miracles have done remarkably well, others such as the Latin American...