Increasing Residual Wage Inequality: Composition Effects, Noisy Data, or Rising Demand for Skill?
发现1973-2003年残差工资不平等增长主要源于经验和教育水平提高带来的构成效应，且当前人口调查（CPS）数据因测量方式夸大了不平等程度，对技能偏向型技术变革的解释提出质疑。
This paper shows that a large fraction of the 1973–2003 growth in residual wage inequality is due to composition effects linked to the secular increase in experience and education, two factors associated with higher within-group wage dispersion. The level and growth in residual wage inequality are also overstated in the March Current Population Survey (CPS) because, unlike the May or Outgoing Rotation Group (ORG) CPS, it does not measure directly the hourly wages of workers paid by the hour. The magnitude and timing of the growth in residual wage inequality provide little evidence of a pervasive increase in the demand for skill due to skill-biased technological change.