New Trade Models, Same Old Gains?
利用微观数据检验新贸易模型是否改变了传统贸易福利收益的估算，发现目前影响不大。
Micro-level data have had a profound influence on research in international trade over the last ten years. In many regards, this research agenda has been very successful. New stylized facts have been uncovered and new trade models have been developed to explain these facts. In this paper we investigate to what extent answers to new micro-level questions have affected answers to an old and central question in the field: how large are the welfare gains from trade? A crude summary of our results is: “So far, not much.”