Export Variety and Country Productivity : Estimating the Monopolistic Competition Model with Endogenous Productivity

摘要: This paper provides evidence on the monopolistic competition model with heterogeneous firms and endogenous productivity. We show that this has a well-defined GDP function where relative export variety enters positively, estimate over 48 countries from 1980 to 2000. Average United States increases by 3.3% per year, so it nearly doubles these two decades. The total increase in is associated average productivity improvement for exporters Overall, can explain 31% of within-country variation (or 52% OECD countries), but only very small fraction between-country