The Panel Study of Income Dynamics after Fourteen Years: An Evaluation
评估了1968至1981年间收入动态面板研究（PSID）的代表性，发现尽管40%原始样本流失，但PSID仍保持代表性，对使用面板数据的研究者有用。
This article considers the representativeness of the Panel Study of Income Dynamics over its fourteen-year history from 1968 to 1981, given the dynamics of entry and exit from the panel. By 1981, 40 percent of the original members had left the sample and were replaced by new entrants who joined either existing households or new households being formed by members of the original sample. The authors consider the dsitribution of demographic characteristics and earnings equations over time, and compare the Panel Study of Income Dynamics with the Current Population Survey. By either approach, they find little evidence that the Panel Study of Income Dynamics has become unrepresentative. Coauthors are William Gould, Lee Lillard, and Finis Welch. Copyright 1988 by University of Chicago Press.