The Doha development round and Africa: partial and general equilibrium analyses of tariff preference erosion
研究了最不发达国家和发展中国家在贸易谈判中面临的关税优惠侵蚀问题，通过部分均衡和一般均衡两种方法分析农业自由化的影响，发现实证方法会影响政策关注排序，但优惠侵蚀在福利和收入上均很重要。
Abstract Erosion of trade preferences currently being enjoyed by the least developed countries (LDCs) and some developing countries remains an important area in the ongoing trade negotiations. The different positions regarding the preference erosion question besides being informed by political economy considerations are also founded on empirical results of this particular question. But does the methodology used for the empirical analysis matter? In this article, the importance of preference erosion due to MFN liberalization on agriculture is analyzed. Drawing from the potential complementary strengths in triangulation, the article uses both partial and general equilibrium analyses. The article shows that the ranking of preference erosion as an issue of policy concern is influenced by the empirical methodology adopted. However, irrespective of the rank, the article concludes that preference erosion is an important issue not only in terms of welfare, but also as it has impacts on incomes for preference‐receiving countries.