On the effects of income volatility on income distribution: Asymmetric evidence from state level data in the U.S.

摘要

A previous study that tried to assess the impact of income volatility on income inequality in the U.S. used state level data and a balanced panel model to conclude that increased volatility worsens income distribution in the U.S., which implies that decreased volatility should reduce inequality. We use the same data set that is extended by nine years and revisit the issue using linear and nonlinear ARDL time-series models to show that the above conclusion does not hold in every state. While we discover short-run asymmetric effects of income volatility on a measure of inequality in most states, they translate to long-run asymmetric effects only in 16 states. Both increased volatility and decreased volatility are found to have unequalizing effects on income distribution in these states.