The Economic Impact of Deepening Trade Agreements
研究了优惠贸易协定的经济影响取决于其雄心水平，通过聚类278个协定并估计贸易弹性，发现深化现有协定可使世界贸易增长3.9%、GDP增长0.9%。
Abstract This paper explores the economic impacts of preferential trade agreements, conditional on their level of ambition. It clusters 278 agreements, encompassing 910 provisions over 18 policy areas and estimates the trade elasticity for the different clusters. These elasticities are used in a series of general-equilibrium counterfactual situations for endowment economies, revealing that deepening existing agreements (the intensive margin of regional integration) could boost world trade by 3.9 percent and world GDP by 0.9 percent. The expected gains from deepening agreements within or across regions vary depending on the initial depth of agreements and the size of regional markets.