Cooperation in WTO’s Tariff Waters?
研究WTO成员国间关税合作程度，通过政治经济学模型发现非合作设定时关税与进口国市场力量正相关，合作时负相关，实证表明超四分之三成员国关税为非合作设定。
This paper examines the extent to which tariff cooperation is observed among World Trade Organization members. With the help of a simple political economy model, we show that tariffs are positively correlated with the importer’s market power when they are set noncooperatively but negatively correlated when set cooperatively. We use this prediction to empirically identify the extent of cooperation in the WTO and find that more than three-quarters of WTO members’ tariffs are set noncooperatively.