Estimating distributions of potential outcomes using local instrumental variables with an application to changes in college enrollment and wage inequality
Estimating distributions of potential outcomes using local instrumental variables with an application to changes in college enrollment and wage inequality
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DOI：
10.1016/j.jeconom.2009.01.011
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发表时间：
2009-04-01
影响因子：
6.3
通讯作者：
Lee, Sokbae
中科院分区：
文献类型：
--
作者：
Carneiro, Pedro;Lee, Sokbae
本文扩展了Heckman和Vytlacil [Heckman，J.，Vytlacil E.，2005.结构方程、处理、效果与计量经济政策评估。Econometrica 73（3），669-738]不仅用于估计平均值，还用于估计潜在结果的分布。新开发的方法说明了它的变化，大学入学率和工资不平等使用的数据从全国青年纵向调查1979年。大学入学人数的增加导致了大学和高中毕业生能力分布的变化。本文估计了一个教育和工资的半参数选择模型，结果表明，对于固定的技能价格，大学参与率增加14%（类似于20世纪80年代观察到的增长），大学溢价减少12%，大学毕业生中90-10百分位数的比例增加2%。(C)2009爱思唯尔有限公司版权所有。
This paper extends the method of local instrumental variables developed by Heckman and Vytlacil [Heckman,J., Vytlacil E., 2005. Structural equations, treatment, effects and econometric policy evaluation. Econometrica 73(3), 669-738] to the estimation of not only means, but also distributions of potential Outcomes. The newly developed method is illustrated by applying it to changes in college enrollment and wage inequality using data from the National Longitudinal Survey of Youth of 1979. Increases in college enrollment cause changes in the distribution of ability among college and high school graduates. This paper estimates a semiparametric selection model of schooling and wages to show that, for fixed skill prices, a 14% increase in college participation (analogous to the increase observed in the 1980s), reduces the college premium by 12% and increases the 90-10 percentile ratio among college graduates by 2%. (C) 2009 Elsevier B.V. All rights reserved.