Innovation and Top Income Inequality
利用美国州和通勤区数据，发现创新与顶层收入份额正相关，但与整体不平等关系不显著；创新（尤其是新进入者）与社会流动性正相关，但游说活动削弱此效应。
Abstract In this article, we use cross-state panel and cross-U.S. commuting-zone data to look at the relationship between innovation, top income inequality and social mobility. We find positive correlations between measures of innovation and top income inequality. We also show that the correlations between innovation and broad measures of inequality are not significant. Next, using instrumental variable analysis, we argue that these correlations at least partly reflect a causality from innovation to top income shares. Finally, we show that innovation, particularly by new entrants, is positively associated with social mobility, but less so in local areas with more intense lobbying activities.