Estimating the returns to college quality with multiple proxies for quality
Estimating the returns to college quality with multiple proxies for quality
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DOI：
10.1086/505067
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发表时间：
2006-07-01
影响因子：
3.8
通讯作者：
Smith, Jeffrey A.
中科院分区：
文献类型：
--
作者：
Black, Dan A.;Smith, Jeffrey A.
现有的大学质量对工资影响的研究通常依赖于大学质量的单一代理变量。这项研究质疑使用单一代理的智慧，因为它可能包含大量的测量误差。我们考虑四个计量经济学方法的问题，涉及使用多个代理大学质量：因子分析，工具变量，最近提出的方法由Lubotsky和Wittenberg，和GMM估计。我们的估计表明，现有文献低估了大学质量的工资效应，并说明了在这种和其他类似情况下使用多个代理的价值。
Existing studies of the effects of college quality on wages typically rely on a single proxy variable for college quality. This study questions the wisdom of using a single proxy given that it likely contains substantial measurement error. We consider four econometric approaches to the problem that involve the use of multiple proxies for college quality: factor analysis, instruments variables, a method recently proposed by Lubotsky and Wittenberg, and a GMM estimator. Our estimates suggest that the existing literature understates the wage effects of college quality and illustrate the value of using multiple proxies in this and other similar contexts.