Years and Intensity of Schooling Investing
AbstractAn essential feature of schooling is not only that it occurs in a different site than most on-the-job training but also that it is more intensive. That is, a smaller proportion of gross potential earnings is sacrificed in on-the-job training than in schooling. In estimating human capital earnings functions it has generally been assumed that during schooling 100% of gross potential earnings are invested in all years, while in on-the-job training this percentage is smaller and is a declining function of age. This assumption has been quite useful since it allows the identification of an estimate of the rate of return on schooling from a regression of earnings on years of schooling. This paper argues that the percentage of gross earnings invested may fall below 100% well before schooling is ended, that this percentage is likely to be correlated with years of schooling, and thus this procedure yields only a biased estimate of the rate of return to schooling.
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Bibliographic InfoPaper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 0049.
Date of creation: Aug 1974
Date of revision:
Publication status: published as American Economic Review, Vol. 66, no. 3 (1976): 321-334.
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Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.
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