Using a unique set of repeated cross-sectionaldata this paper examines the causes of this increase in earnings inequality.
本文使用一个独特的由多年很截面数据组成的数据库对收入不平等在这期间的增长进行分析。
2
With the caveat that the substantive findings of this study are based on cross-sectionaldata, we discuss the implications of our work and future research directions.
通过强调这个研究得出的真实结论是以代表性数据为基础，本文还讨论了我们工作的意义以及未来的研究方向。
3
Longitudinal data is referred to data in which individuals are measured repeatedly through time, so it combines elements of cross-sectionaldata and time-series data.