Wage Compression and Wage Inequality Between Black and White Males in the United States, 1940–1960
研究了1940-1960年间美国黑人与白人男性工资差距的变化，发现1940年代差距缩小主要源于种族特定因素，而1950年代停滞则与工资结构变化有关。
The gap between the mean wages of black men and white men in the United States narrowed substantially between 1940 and 1950. There was, however, almost no change in this wage gap between 1950 and 1960. Some of this discontinuity in the path of black progress can be explained by general changes in the wage structure—wage compression in the 1940s and slight expansion in the 1950s. However, most of the gains of the 1940s were driven by race-specific factors, including increasing relative wages controlling for worker characteristics. These race-specific gains ceased in the 1950s.