Revisiting the trends in global inequality
使用新的标准化国家收入百分位数据集,分析1950年以来全球收入分配趋势,检验关键数据选择对结果稳健性的影响,发现绝对不平等持续上升,相对不平等在2000年后显著下降但被新冠疫情打断,预计至少持续到2028年。
I analyze trends in global income distribution since 1950 using a new companion WIID dataset with standardized country income percentiles. I investigate the robustness of these trends with respect to key data choices, as well as the degree to which the inequality trend depends on specific distributional views (such as the use of absolute versus relative inequality, or relative emphasis at the bottom versus the top). The results show a robust increase in absolute inequality, along with a more nuanced trend in relative inequality, with a very robust decline after 2000 that was interrupted by the COVID crisis but is expected to continue at least until 2028.