How Closely Do Top Income Shares Track Other Measures of Inequality?
利用13个发达国家的标准化顶层收入份额数据，发现顶层收入份额与基尼系数等更广泛的不平等指标之间存在强且显著的关系，表明顶层收入份额数据可在其他不平等指标质量低或缺失时作为有效替代。
In recent years, researchers have used taxation statistics to estimate the share of total income held by the richest groups, such as the top 10% or the top 1%. Compiling a standardised top income shares dataset for 13 developed countries, I find that there is a strong and significant relationship between top income shares and broader inequality measures, such as the Gini coefficient. This suggests that panel data on top income shares may be a useful substitute for other measures of inequality over periods when alternative income distribution measures are of low quality, or unavailable.