Generalized Selection Bias and The Decomposition of Wage Differentials
The major contribution of this paper is ending a new and flexible way to measure the effects of selection on log-wages. In this context, we offer a general approach to performing decomposition analysis when selection effects are present. We call the difference between unconditional and conditional expectations of the log-wages a generalized selection bias (GSB) when the two expectations are measured using the estimates from the joint estimation of the whole model (log-wages and selection equations) by the MLE method. The unconditional and conditional expectations are, respectively, the deterministic component of log-wages, and the deterministic component plus the conditional expectation of the stochastic component of log-wages, where the deterministic component is computed using the estimates from the joint estimation. That is, the GSB is the expectation of the residuals estimated from the joint estimation. It is appropriate to apply the Blinder-Oaxaca decomposition method to the wage differentials adjusted for the GSB. The GSB approach to decomposition analysis is not only easy to implement and flexible enough to apply to virtually any kind of selection issue, but also efficient because it uses full information. We illustrate the GSB approach by applying it to the racial wage differentials among women using data from the Current Population Survey. We discuss the possibility of using semi-parametric or Bayesian sampling method for the joint estimation and related modifications of decomposition analysis.
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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.:
- Schaffner, Julie Anderson, 1998. "Generating conditional expectations from models with selectivity bias: comment," Economics Letters, Elsevier, vol. 58(3), pages 255-261, March.
- Blundell, Richard & Ham, John & Meghir, Costas, 1987.
"Unemployment and Female Labour Supply,"
Royal Economic Society, vol. 97(388a), pages 44-64, Supplemen.
- Vella, Frank, 1988. "Generating conditional expectations from models with selectivity bias," Economics Letters, Elsevier, vol. 28(1), pages 97-103.
- Wolfgang Hardle & Oliver Linton, 1994.
"Applied Nonparametric Methods,"
Cowles Foundation Discussion Papers
1069, Cowles Foundation for Research in Economics, Yale University.
- Hardle, W., 1992. "Applied Nonparametric Methods," Papers 9204, Catholique de Louvain - Institut de statistique.
- Härdle, W.K., 1992. "Applied Nonparametric Methods," Discussion Paper 1992-6, Tilburg University, Center for Economic Research.
- Hardle, W., 1992. "Applied Nonparametric Methods," Papers 9206, Tilburg - Center for Economic Research.
- Oliver LINTON, "undated". "Applied nonparametric methods," Statistic und Oekonometrie 9312, Humboldt Universitaet Berlin.
- HÄRDLE, Wolfgang, 1992. "Applied nonparametric methods," CORE Discussion Papers 1992003, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
- Thomas Mroz, "undated".
"The Sensitivity of an Empirical Model of Married Women's Hours of Work to Economic and Statistical Assumptions,"
University of Chicago - Population Research Center
84-8, Chicago - Population Research Center.
- Mroz, Thomas A, 1987. "The Sensitivity of an Empirical Model of Married Women's Hours of Work to Economic and Statistical Assumptions," Econometrica, Econometric Society, vol. 55(4), pages 765-799, July.
- Chib, Siddhartha & Greenberg, Edward, 1996.
"Markov Chain Monte Carlo Simulation Methods in Econometrics,"
Cambridge University Press, vol. 12(03), pages 409-431, August.
- Siddhartha Chib & Edward Greenberg, 1994. "Markov Chain Monte Carlo Simulation Methods in Econometrics," Econometrics 9408001, EconWPA, revised 24 Oct 1994.
- Dolton, P J & Makepeace, G H, 1986. "Sample Selection and Male-Female Earnings Differentials in the Graduate Labour Market," Oxford Economic Papers, Oxford University Press, vol. 38(2), pages 317-341, July.
- Fishe, Raymond P. H. & Trost, R. P. & Lurie, Philip M., 1981. "Labor force earnings and college choice of young women: An examination of selectivity bias and comparative advantage," Economics of Education Review, Elsevier, vol. 1(2), pages 169-191, April.
- Hoffman, Saul D & Link, Charles R, 1984. "Selectivity Bias in Male Wage Equations: Black-White Comparisons," The Review of Economics and Statistics, MIT Press, vol. 66(2), pages 320-324, May.
- John C. Ham, 1982. "Estimation of a Labour Supply Model with Censoring Due to Unemployment and Underemployment," Review of Economic Studies, Oxford University Press, vol. 49(3), pages 335-354.
- Lee, Lung-Fei, 1983. "Generalized Econometric Models with Selectivity," Econometrica, Econometric Society, vol. 51(2), pages 507-512, March.
- Neuman, Shoshana & Oaxaca, Ronald L, 1998. "Estimating Labour Market Discrimination with Selectivity Corrected Wage Equations: Methodological Considerations and an Illustration from Israel," CEPR Discussion Papers 1915, C.E.P.R. Discussion Papers.
- Dolton, P J & Makepeace, G H & Van Der Klaauw, W, 1989. "Occupational Choice and Earnings Determination: The Role of Sample Selection and Non-pecuniary Factors," Oxford Economic Papers, Oxford University Press, vol. 41(3), pages 573-594, July.
- Wales, T J & Woodland, A D, 1980. "Sample Selectivity and the Estimation of Labor Supply Functions," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 21(2), pages 437-468, June.
- Ira N. Gang & Catherine Y. Co & Myeong-Su Yun, 1999. "Returns to Returning," Departmental Working Papers 199813, Rutgers University, Department of Economics.
- H. D. Vinod & B. D. McCullough, 1999. "The Numerical Reliability of Econometric Software," Journal of Economic Literature, American Economic Association, vol. 37(2), pages 633-665, June.
- Ermisch, John F & Wright, Robert E, 1988.
"Gender Discrimination in the British Labour Market: A Reassessment,"
CEPR Discussion Papers
278, C.E.P.R. Discussion Papers.
- Wright, Robert E & Ermisch, John F, 1991. "Gender Discrimination in the British Labour Market: A Reassessment," Economic Journal, Royal Economic Society, vol. 101(406), pages 508-522, May.
- Becker, Gary S., 1971. "The Economics of Discrimination," University of Chicago Press Economics Books, University of Chicago Press, edition 2, number 9780226041162.
- David Neumark, 1987.
"Employers' discriminatory behavior and the estimation of wage discrimination,"
Special Studies Papers
227, Board of Governors of the Federal Reserve System (U.S.).
- David Neumark, 1988. "Employers' Discriminatory Behavior and the Estimation of Wage Discrimination," Journal of Human Resources, University of Wisconsin Press, vol. 23(3), pages 279-295.
- Reimers, Cordelia W, 1983. "Labor Market Discrimination against Hispanic and Black Men," The Review of Economics and Statistics, MIT Press, vol. 65(4), pages 570-579, November.
- James J. Heckman & Thomas E. MaCurdy, 1982. "New Methods for Estimating Labor Supply Functions: A Survey," NBER Working Papers 0858, National Bureau of Economic Research, Inc.
- repec:uwp:jhriss:v:8:y:1973:i:4:p:436-455 is not listed on IDEAS
- Killingsworth, Mark R. & Heckman, James J., 1987. "Female labor supply: A survey," Handbook of Labor Economics, in: O. Ashenfelter & R. Layard (ed.), Handbook of Labor Economics, edition 1, volume 1, chapter 2, pages 103-204 Elsevier.
- Heckman, James J, 1974. "Shadow Prices, Market Wages, and Labor Supply," Econometrica, Econometric Society, vol. 42(4), pages 679-694, July.
- Moffitt, Robert, 1984. "The Estimation of a Joint Wage-Hours Labor Supply Model," Journal of Labor Economics, University of Chicago Press, vol. 2(4), pages 550-566, October.
- repec:cup:etheor:v:12:y:1996:i:3:p:409-31 is not listed on IDEAS
- Blundell, Richard & Duncan, Alan & Meghir, Costas, 1992. "Taxation in Empirical Labour Supply Models: Lone Mothers in the UK," Economic Journal, Royal Economic Society, vol. 102(411), pages 265-278, March.
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