Some recent empirical studies examine the impact of the GATT/WTO on trade. This paper investigates the sample selection bias and the gravity model specification issues in the literature. First, the GATT/WTO not only makes existing trading partners trade more at the intensive margin, but also...

The European Network of Economic Policy Research Institutes (ENEPRI) brings together twenty-four leading national economic policy research institutes from most of the EU-27 countries. The goals of the network are to foster the international diffusion of existing research, co-ordinate research...