Assessing the impact of agricultural technology improvements in developing countries in the presence of policy distortions
研究了发展中国家常见政策（如出口税、消费补贴、食品援助和外汇约束）如何影响农业技术变革带来的收益大小和分配，发现政策扭曲可能增强或削弱技术收益，且即使总收益不变，分配也会改变。
This paper focusses on how policies most commonly used by developing countries affect both the size and the distribution of the benefits from technical change. Three sets of policies are analysed: different export taxes whose level is endogeneously determined, interventions to expand domestic consumption (a consumer subsidy and a food aid programme are considered), and the existence of a constraint on the foreign exchange which can be used to finance food imports. In some cases the benefits from the new technology are enhanced by the policy distortion, in others they are reduced. Even when the benefits from the new technology with the policy distortion in place are the same as those that would occur in a distortion-free world market, their distribution is different