Measuring Agricultural Policy Bias: General Equilibrium Analysis of Fifteen Developing Countries
提出一般均衡下的相对有效保护率指标，衡量贸易政策对农业价格激励的偏向，发现1980年代的农业偏向在1990年代基本消除，且一般均衡效应和国家特征至关重要。
Measurement is a key issue in the literature on price incentive bias induced by trade policy. We introduce a general equilibrium measure of the relative effective rate of protection, which generalizes earlier protection measures. For our fifteen sample countries, results indicate that the agricultural price incentive bias generally perceived to exist during the 1980s was largely eliminated during the 1990s. Results also demonstrate that general equilibrium effects and country‐specific characteristics are crucial for determining the sign and magnitude of agricultural bias. Our comprehensive protection measure is therefore uniquely suited to capture the full impact of trade policies on relative agricultural price incentives.