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龚斌磊独著论文“Like father like son?(有其父必有其子?)”被SSCI《发展经济学评论》录用

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浙江大学中国农村发展研究院(CARD)龚斌磊研究员独著论文“Like father like son? Revisiting the Role of Parental Education in Estimating Returns to Education in China (有其父必有其子? 重新检视父母教育在估计中国教育回报率中的角色)”被知名SSCI学术期刊《发展经济学评论》(Review of Development Economics)录用。这是龚斌磊研究员本年度第七篇SSCI独著论文,其中Q1区论文五篇。本文在2017年第二届中国劳动经济学年会和第九届CAER-IFPRI国际学术年会上做了报告,受到姚先国等教授的点评。

在利用收入方程计算教育回报率的文献中,父母教育常常作为工具变量,旨在解决子女教育的内生性问题。然而,近些年许多学者发现,父母教育往往和无法被观察到的社会关系联系密切,并能直接影响子女工作与收入,应作为社会关系的代理变量(而非子女教育的工具变量)。本文引入“地理隔离”概念,重新检视了父母教育在教育回报率研究中的角色。对于农民工群体,由于其幼年学习生活在农村,成年后工作在城市,父母教育较难直接影响其工作与收入,因此更有可能是好的工具变量;对于本地居民(农村与城市),由于其在本地就业,父母教育与社会关系更有可能直接影响其工作与收入,因此更有可能是代理变量。本文利用CHIP与CFPS全国调研数据,验证了以上猜测,识别了不同人群中父母教育扮演的不同角色,对教育回报率研究中长期存在的“工具变量与代理变量之争”有所贡献。此外,对于流动人口群体,本文提出的“地理隔离”概念,将提供一个寻找工具变量的途径,这对研究中国、印度、越南、墨西哥等发展中国家普遍存在的人口流动和城市化等问题有所帮助。

 

Abstract:Parental education was used as an instrument in the earning equation to deal with the endogeneity problem of education. Recently, however, many find that parental education can be a proxy of the unobservable networking, which directly affects wage. This article revisits the role of parental education in estimating returns to education by introducing the “geographical isolation” theory. For migrant workers who receive an education and move around to work, parental education affects their education but otherwise is unrelated to their wage, which makes parental education a good instrument in the instrumental variable approach. For local residents who stay in the same place during childhood and adulthood, parental education can directly affect their wage, which is better introduced as a proxy variable using control variable method. This article identifies the heterogeneous effect of parental education on wages for different Chinese cohorts and contributes to the debate between the control variable and instrument variable methods in returns to education studies. Moreover, the idea of geographic isolation can help in the search for good IVs for migrant workers, which is valuable when studying the large migrant population in developing countries such as China, India, Vietnam, Mexico, and many African countries.

JEL:  J31 J61 O15

Key Words: Returns to Education in China; Control Variable and Instrumental Variable; Geographical Isolation; Good Instruments; Effect of Parental Education on Wage