Market Structure and Worker Quality
检验了垄断性行业是否雇佣更高质量工人的观点，发现传统数据中教育程度高的工人更可能集中在高集中度行业，但加入研发指标后，这一关系消失。
It is frequently asserted, although never directly tested, that firms in more monopolistic industries hire better-qualified workers. This paper presents two new results. First, worker quality (education in particular) is a strong determinant of whether a worker is employed in a concentrated industry when using a traditional data source. Second, upon expanding the data to include measures of research and development, workers of better quality are actually no more likely to locate in concentrated industries. These results fit with theories claiming that industries subject to technological opportunities may be more concentrated and that those opportunities demand higher-quality workers. Copyright 1990 by Blackwell Publishing Ltd.