This paper studies the impact of international business trips on the stock of knowledge available to an economy. It develops a theoretical model to analyse the possible effects, and presents an empirical application using productivity data for a panel of twelve Australian industries during...

Using a new survey, we show that the dispersion of marginal products across firms in the European Union is about twice as large as that in the United States. Reducing it to the US level would increase EU GDP by more than 30 percent. Alternatively, removing barriers between industries and...