Policy Implications of New Data on Income Mobility
分析收入流动性数据，发现流动性不足以抵消不平等增长，且大部分低收入者属于持续或反复贫困，为政策制定提供依据。
The existence of income mobility may moderate concerns about growing inequalities, especially if income mobility has increased. However, the evidence for rising mobility is equivocal, and its extent is not enough to offset the growth of cross‐sectional inequality. There is a case for greater concern for, and different policies towards, those persistently or recurrently poor than those only temporarily poor, but the data analysed here suggest that the bulk of low income observations come from the first two categories. Analysis of income mobility may help understand why people's incomes follow different trajectories and how policy might affect this.