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Mark R. Rosenzweig, Kenneth I. Wolpin, Are There Increasing Returns to the Intergenerational Production of Human Capital? Maternal Schooling and Child Intellectual Achievement, The Journal of Human Resources, Vol. 29, No. 2, Special Issue: Women's Work, Wages, and Well-Being (Spring, 1994), pp. 670-693
Rosenzweig et al. (Sat,) studied this question.