Preference Erosion and Multilateral Trade Liberalization
研究了OECD国家关税削减可能导致的优惠侵蚀问题，发现行政负担导致优惠利用率低，相当于贸易商品价值的4%，全面消除关税后考虑行政成本可消除总体侵蚀成本。
Because of concern that tariff reductions in Organisation for Economic Co-operation and Development (OECD) countries will translate into worsening export performance for the least developed countries, the erosion of trade preferences may become a stumbling block for multilateral trade liberalization. An econometric analysis of actual preference use shows that preferences are underused because of administrative burdens--estimated to be equivalent to an average of 4 percent of the value of goods traded. To quantify the maximum scope for preference erosion, the compliance cost estimates are used in a model-based assessment of the impact of full elimination of OECD tariffs. Taking into account administrative costs eliminates erosion costs in the aggregate and greatly reduces the losses for countries most affected by preference erosion.