Education returns of wage earners and self-employed workers: Comment
In a recent paper, García-Mainar and Montuenga-Gómez [García-Mainar, I. & Montuenga-Gómez, V. M. (2005). Education returns of wage earners and self-employed workers: Portugal vs. Spain. Economics of Education Review, 24(2), 161-170] apply the generalized IV model of Hausman and Taylor to estimate education returns of wage earners and the self-employed in Portugal and in Spain. Our examination reveals several problems which relate to the validity and documentation of the instrumental variables, as well as the robustness of the results.
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- J. A. Hausman & W. E. Taylor, 1980.
"Panel Data and Unobservable Individual Effects,"
255, Massachusetts Institute of Technology (MIT), Department of Economics.
- Hausman, Jerry A & Taylor, William E, 1981. "Panel Data and Unobservable Individual Effects," Econometrica, Econometric Society, vol. 49(6), pages 1377-98, November.
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- Joshua Angrist & Alan B. Krueger, 2001.
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NBER Working Papers
8456, National Bureau of Economic Research, Inc.
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- Joshua Angrist & Alan B. Krueger, 2001. "Instrumental Variables and the Search for Identification: From Supply and Demand to Natural Experiments," Working Papers 834, Princeton University, Department of Economics, Industrial Relations Section..
- Garcia-Mainar, Inmaculada & Montuenga-Gomez, Victor M., 2005. "Education returns of wage earners and self-employed workers: Portugal vs. Spain," Economics of Education Review, Elsevier, vol. 24(2), pages 161-170, April.
- Steven D. Levitt, 1996.
"The Effect of Prison Population Size on Crime Rates: Evidence from Prison Overcrowding Litigation,"
The Quarterly Journal of Economics,
Oxford University Press, vol. 111(2), pages 319-351.
- Steven D. Levitt, 1995. "The Effect of Prison Population Size on Crime Rates: Evidence From Prison Overcrowding Litigation," NBER Working Papers 5119, National Bureau of Economic Research, Inc.
- Card, David, 1999. "The causal effect of education on earnings," Handbook of Labor Economics, in: O. Ashenfelter & D. Card (ed.), Handbook of Labor Economics, edition 1, volume 3, chapter 30, pages 1801-1863 Elsevier.
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