In most macroeconomic models, the substitutability between domestic and foreign goods is calibrated using aggregated data. This imposes homogeneous elasticities across goods, and the calibration is only valid under this assumption. If elasticities are heterogeneous, the aggregate...

The paper explores the relationship between trade policy and current accounts. The effect on the current account of a change in protection at home and then abroad is analyzed, assuming that the exchange rate floats. The “savings-and-investment approach” is used. It shows that there is no...

Efforts to liberalize world trade are increasingly focusing on strengthening the links between low-income countries’ trade policies and their development strategies. However, although greater trade openness promises faster growth for poor countries, it also presents risks to those with small...