Previous studies that tried to assess the effects of an uncertainty measure on income distribution in the United States used volatility of income as a measure of uncertainty. We use the policy uncertainty index as our measure of uncertainty, which is said to be much more comprehensive than income volatility and assess its asymmetric impact on a measure of income inequality in each state of the United States We find much more significant results compared to previous studies. While we find short-run asymmetric effects of policy uncertainty in 41 states, short-run effects translate into the long-run asymmetric effects in 25 states. Furthermore, we find that while in 20 states decreased policy uncertainty worsened income inequality in 14 states increased policy uncertainty improved it.

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政策不确定性和收入分配：来自美国州级数据的不对称证据

先前试图评估不确定性度量对美国收入分配影响的研究使用收入波动性作为不确定性的度量。我们使用政策不确定性指数作为衡量不确定性的指标，据说它比收入波动性要全面得多，并评估其对美国各州收入不平等衡量的不对称影响 我们发现与之前相比，结果更为显着学习。虽然我们在 41 个州发现政策不确定性的短期不对称效应，但短期效应在 25 个州转化为长期不对称效应。此外，我们发现，虽然 20 个州的政策不确定性降低，但收入不平等加剧，但 14 个州的政策不确定性增加，改善了收入不平等。