When Britain Turned Inward: The Impact of Interwar British Protection
利用英国进口和贸易政策的高分辨率数据，研究发现歧视性贸易政策解释了1930年代英国转向帝国进口的大部分原因，而传统观点认为贸易政策对总进口影响有限。
International trade collapsed, and also became much less multilateral, during the 1930s. Previous studies, looking at aggregate trade flows, have argued that trade policies had relatively little to do with either phenomenon. Using a new dataset incorporating highly disaggregated information on the United Kingdom’s imports and trade policies, we find that while conventional wisdom is correct regarding the impact of trade policy on the total value of British imports, discriminatory trade policies can explain the majority of Britain’s shift toward Imperial imports in the 1930s.