How polarized is the global income distribution?
首次估计全球收入分布的两极化水平，发现1975-2010年间相对两极化大幅下降，而绝对两极化上升，与同期全球不平等趋势一致。
The interest in the level of global inequality has surged in recent years. This paper complements existing estimates of global inequality by providing the first estimates of the level of bipolarization of the global income distribution. During 1975–2010, global bipolarization declined substantially according to ‘relative’ measures, while it increased according to ‘absolute’ measures. The results mirror trends in global inequality over the same period.