Why Do More Open Economies Have Bigger Governments?
发现经济体对国际贸易的开放度与政府规模之间存在正相关关系，且这一关系在贸易条件风险高时更强，支持政府支出在应对外部风险中起作用的假说。
There exists a positive correlation between an economy's exposure to international trade and the size of its government. The correlation holds for most measures of government spending, in low- as well as high-income samples, and is robust to the inclusion of a wide range of controls. One explanation is that government spending plays a risk-reducing role in economies exposed to a significant amount of external risk. The paper provides a range of evidence consistent with this hypothesis. In particular, the relationship between openness and government size is strongest when terms-of-trade risk is highest.