Trade Elasticities in General Equilibrium: Demand, Supply, and Aggregation
构建了一个包含要素不完全流动、产品进入和外部规模报酬的一般均衡贸易模型，通过两个复合弹性概括供给与加总效应，并估计了国际产品市场的弹性，用于评估美国保护主义政策的影响。
Abstract We develop a general equilibrium model of international trade that incorporates imperfect factor mobility, product entry, and external returns to scale into a unified framework. The effects from these microeconomic channels can be summarized by two composite elasticities that govern supply and aggregation. We structurally derive export supply and import demand curves, develop a heteroskedastic estimator, and estimate supply, aggregation, and demand elasticities across international product markets. Employing our estimated model, we evaluate the impact of recent US protectionist policies and highlight the importance of our estimates and general equilibrium effects for tariff passthrough rates and cross-industry employment reallocations.