The Great Reversal in the Demand for Skill and Cognitive Tasks
发现，2000年科技泡沫破裂后，对认知任务的需求发生逆转，高技能工人向下挤占低技能岗位，这一趋势在2008年金融危机后更加明显。
This paper argues that several of the poor labor market outcomes observed in the Great Recession can be traced back to a change in the demand pattern for skilled workers that started with the tech bust of 2000. In particular, we show that around the year 2000, the demand for cognitive tasks underwent a reversal. In response, high-skilled workers moved down the occupational ladder and increasingly displaced lower-educated workers in less skill-intensive jobs. While these effects were present before the financial crisis of 2008, they became more obvious after jobs associated with the housing bubble disappeared.