Double trouble: on the value of twins-based estimation of the return to schooling
AbstractSeveral recent studies use the schooling and wage variation between monozygotic twins to estimate the return to schooling. In this paper, we summarize the results from this literature, and we examine the implications of endogenous determination of which twin goes to school longer and of measuring schooling with (possibly mean-reverting) error. Endogeneity of between-twins schooling variation is strongly suggested by the extensive (mostly non-economic) literature documenting that the between-twins difference in birth weight is correlated with the between-twins differences in both schooling and IQ. We conclude that twins-based estimation is vulnerable to the same sort of inconsistency that afflicts conventional cross-sectional estimation. We argue, however, that, if one starts with the presumption that endogenous schooling induces upward inconsistency in the estimated return to schooling, the new twins-based estimates may complement other approaches to tightening the upper bound on the return to schooling.
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Bibliographic InfoArticle provided by Elsevier in its journal Economics of Education Review.
Volume (Year): 18 (1999)
Issue (Month): 2 (April)
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Web page: http://www.elsevier.com/locate/econedurev
Other versions of this item:
- John Bound & Gary Solon, 1998. "Double Trouble: On the Value of Twins-Based Estimation of the Return to Schooling," NBER Working Papers 6721, National Bureau of Economic Research, Inc.
- J24 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Human Capital; Skills; Occupational Choice; Labor Productivity
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
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