Evaluating the Econometric Evaluations of Training Programs with Experimental Data
利用一个随机实验的就业培训项目数据，比较了多种计量经济学方法估计的结果与实验基准结果，发现许多方法无法复制实验结论，提醒研究者注意非实验评估中的设定偏误。
This paper takes the results of an employment and training program thatwas run as a field experiment, in which the participants were randomlyassigned into a treatment or a control group, and compares these results to the estimates that might have been produced by an econometrician who evaluated the program using the same econometric procedures that have been used in the program evaluation literature. This comparison shows that many of these econometric procedures fail toreplicate the experimentally determined results, and suggests that researchers should be aware of the potential for specification errorsin other nonexperimental evaluations. Copyright 1986 by American Economic Association.