A panel of tax returns shows that income mobility can explain between none and three-quarters of the increase in annual inequality since the 1980s. These estimates are sensitive to different measures of inequality, income definitions, and sample restrictions—mostly due to different treatments of mean-reverting income changes among those with temporarily low incomes. This range of results suggests that sensitivity analyses are crucial to understand the robustness of income inequality and mobility measures.

中文翻译：

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收入流动性和不平等：1979 年以来美国税收数据的成人水平衡量标准

一组纳税申报表显示，收入流动性无法解释自 1980 年代以来年度不平等增加的四分之三。这些估计对不同的不平等衡量标准、收入定义和样本限制很敏感——主要是由于对暂时低收入者的均值回归收入变化的不同处理。这一范围的结果表明，敏感性分析对于理解收入不平等和流动性措施的稳健性至关重要。