Wage Differentials Are Larger Than You Think
NBER Working Paper No. 168
---- Acknowledgements -----
Financial support from the Rockefeller Foundation through a grant to NBER is gratefully acknowledged. The author wishes to thank Zvi Griliches, Robert Hall, James Heckman, Tom MaCurdy, Robert Michael, Melvin Reder and Lester Telser for helpful comments. Craig Hakkio performed the computation.