TRADE, WAGES, AND PRODUCTIVITY
构建了一个垄断竞争一般均衡模型，研究贸易一体化如何影响工资、生产率、消费多样性和加成率。通过结构估计模拟消除加美边境贸易壁垒的影响，发现加拿大企业选择更严格，消费者面对的加成率下降，但企业层面加成率变化不确定。
We develop a general equilibrium monopolistic competition model in which wages, productivity, consumption diversity, and markups respond to trade integration. We structurally estimate the model and simulate the impacts of removing all trade barriers generated by the Canada–U.S. border. Firm selection gets tougher by 8.09% in Canada and by 0.80% in the United States. Markups that consumers face, which are central to welfare, fall by up to 12.11% in Canadian provinces and by up to 2.82% in U.S. states. However, changes in markups measured at the firm level are ambiguous, thus providing a different piece of information.