A New Approach to Evaluating Trade Policy
提出贸易限制指数，通过一般均衡距离函数衡量贸易保护体系的限制程度，适用于关税和配额，支持国际与跨期比较，并用两个实证例子证明其优于常用指标。
This paper introduces a new index number, the Trade Restrictiveness Index, which measures the restrictiveness of a system of trade protection. The index is a general equilibrium application of the distance function and answers the question: "What uniform set of trade restrictions is equivalent (in welfare terms) to the initial protective structure?" The index is applicable to both tariffs and quotas and permits international and intertemporal comparisons. The index is operational and we provide two empirical examples to illustrate its applicability and to show its superiority to commonly used measures.