Did raising doing business scores boost GDP?
利用世界银行营商环境评分的时间序列数据，通过向量自回归方法解决内生性问题，发现评分改善对人均实际GDP至少产生暂时的负面影响，几乎没有正面效应的证据。
We use the time series variation in the World Bank’s “distance to frontier” estimates of the ease of doing business to assess the effects of changes in this variable on real GDP per capita. The use of Vector Autoregression techniques allows us to identify shocks to the Doing Business scores that are initially uncorrelated with GDP, thus addressing an important endogeneity problem that affects the cross-sectional literature on this topic. We report a robust finding that improvements in Doing Business scores have at least a temporary negative impact on GDP and find little evidence for a positive effect in the years following these improvements.