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Identification of the Covariance Structure of Earnings using the GMM Estimator

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  • Aedin Doris

    ()
    (Economics,Finance and Accounting National University of Ireland, Maynooth)

  • Donal O'Neill

    ()
    (Economics,Finance and Accounting National University of Ireland,)

  • Olive Sweetman

    ()
    (Economics,Finance and Accounting National University of Ireland,)

Abstract

In this paper we study the performance of the GMM estimator in the context of the covariance structure of earnings. Using analytical and Monte Carlo techniques we examine the sensitivity of parameter identification to key features such as panel length, sample size, the degree of persistence of earnings shocks and the evolution of inequality over time. We show that the interaction of transitory persistence with the time pattern of inequality determines identification in these models and offer some practical recommendations that follow from our findings.

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Bibliographic Info

Paper provided by Department of Economics, Finance and Accounting, National University of Ireland - Maynooth in its series Economics, Finance and Accounting Department Working Paper Series with number n208-10.pdf.

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Length: 30 pages
Date of creation: 2010
Date of revision:
Handle: RePEc:may:mayecw:n208-10.pdf

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Postal: Maynooth, Co. Kildare
Phone: 353-1-7083728
Fax: 353-1-7083934
Web page: http://economics.nuim.ie
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  1. María Cervini-Plá & Xavier Ramos, 2012. "Long-Term Earnings Inequality, Earnings Instability and Temporary Employment in Spain: 1993–2000," British Journal of Industrial Relations, London School of Economics, vol. 50(4), pages 714-736, December.
  2. Adriaan S. Kalwij & Rob Alessie, 2007. "Permanent and transitory wages of British men, 1975-2001: year, age and cohort effects," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 22(6), pages 1063-1093.
  3. Violante, Giovanni L, 2001. "Technological Acceleration, Skill Transferability and the Rise in Residual Inequality," CEPR Discussion Papers 2765, C.E.P.R. Discussion Papers.
  4. Steven J. Haider, 2000. "Earnings Instability and Earnings Inequality of Males in the United States: 1967-1991," Working Papers 00-15, RAND Corporation Publications Department.
  5. Michael Baker & Gary Solon, 1998. "Earnings Dynamics and Inequality among Canadian Men, 1976-1992: Evidence from Longitudinal Income Tax Records," Working Papers baker-98-01, University of Toronto, Department of Economics.
  6. Pozzi, Lorenzo, 2003. "The coefficient of relative risk aversion: a Monte Carlo study investigating small sample estimator problems," Economic Modelling, Elsevier, vol. 20(5), pages 923-940, September.
  7. Stock, James H & Wright, Jonathan H & Yogo, Motohiro, 2002. "A Survey of Weak Instruments and Weak Identification in Generalized Method of Moments," Journal of Business & Economic Statistics, American Statistical Association, vol. 20(4), pages 518-29, October.
  8. Aedin Doris & Donal O’Neill & Olive Sweetman, 2008. "Does Growth Affect the Nature of Inequality? Ireland 1994-2001," Economics, Finance and Accounting Department Working Paper Series n1930708.pdf, Department of Economics, Finance and Accounting, National University of Ireland - Maynooth.
  9. Stéphane Bonhomme & Jean-Marc Robin, 2008. "Assessing the equalizing force of mobility using short panels: France 1990-2000," CeMMAP working papers CWP02/08, Centre for Microdata Methods and Practice, Institute for Fiscal Studies.
  10. Denisa Maria Sologon & Cathal O'Donoghue, 2009. "Earnings Dynamics and Inequality in EU, 1994-2001," SOEPpapers on Multidisciplinary Panel Data Research 184, DIW Berlin, The German Socio-Economic Panel (SOEP).
  11. James H. Stock & Jonathan Wright, 2000. "GMM with Weak Identification," Econometrica, Econometric Society, vol. 68(5), pages 1055-1096, September.
  12. Robert A. Moffitt & Peter Gottschalk, 2002. "Trends in the Transitory Variance of Earnings in the United States," Economic Journal, Royal Economic Society, vol. 112(478), pages C68-C73, March.
  13. Lorenzo Cappellari, 2004. "The Dynamics and Inequality of Italian Men’s Earnings: Long-term Changes or Transitory Fluctuations?," Journal of Human Resources, University of Wisconsin Press, vol. 39(2).
  14. Daly, Mary C. & Valletta, Robert G., 2008. "Cross-national trends in earnings inequality and instability," Economics Letters, Elsevier, vol. 99(2), pages 215-219, May.
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Cited by:
  1. Stephen Jenkins & Peter Lambert, 2011. "Robert Moffitt and Peter Gottschalk’s 1995 paper ‘Trends in the covariance structure of earnings in the US: 1969–1987’," Journal of Economic Inequality, Springer, vol. 9(3), pages 433-437, September.
  2. repec:ese:iserwp:2013-10 is not listed on IDEAS
  3. Jäntti, Markus & Jenkins, Stephen P., 2013. "Income Mobility," IZA Discussion Papers 7730, Institute for the Study of Labor (IZA).
  4. Cappellari, Lorenzo & Jenkins, Stephen P., 2013. "Earnings and Labour Market Volatility in Britain," IZA Discussion Papers 7491, Institute for the Study of Labor (IZA).
  5. Kässi, Otto, 2011. "Earnings Dynamics of Men and Women in Finland: Permanent Inequality versus Earnings Instability," MPRA Paper 34301, University Library of Munich, Germany.

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