Transmission of Human Capital across Four Generations: Intergenerational Correlations and a Test of the Becker-Tomes Model
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- Lindahl, Mikael & Palme, Mårten & Sandgren Massih, Sofia & Sjögren, Anna, 2011. "Transmission of Human Capital across Four Generations: Intergenerational Correlations and a Test of the Becker-Tomes Model," Research Papers in Economics 2012:1, Stockholm University, Department of Economics.
- Lindahl, Mikael & Palme, Mårten & Sandgren Massih, Sofia & Sjögren, Anna, 2011. "Transmission of Human Capital across Four Generations: Intergenerational Correlations and a Test of the Becker-Tomes Model," Working Paper Series 2011:18, Uppsala University, Department of Economics.
References listed on IDEAS
- Björklund, Anders & Salvanes, Kjell G., 2011.
"Education and Family Background: Mechanisms and Policies,"
Handbook of the Economics of Education, in: Erik Hanushek & Stephen Machin & Ludger Woessmann (ed.), Handbook of the Economics of Education, edition 1, volume 3, chapter 3, pages 201-247,
Elsevier.
- Björklund, Anders & Salvanes, Kjell G., 2010. "Education and Family Background: Mechanisms and Policies," IZA Discussion Papers 5002, Institute of Labor Economics (IZA).
- Björklund, Anders & Salvanes, Kjell G., 2010. "Education and family background: Mechanisms and policies," Discussion Paper Series in Economics 14/2010, Norwegian School of Economics, Department of Economics.
- Bruce Sacerdote, 2005.
"Slavery and the Intergenerational Transmission of Human Capital,"
The Review of Economics and Statistics, MIT Press, vol. 87(2), pages 217-234, May.
- Bruce Sacerdote, 2002. "Slavery and the Intergenerational Transmission of Human Capital," NBER Working Papers 9227, National Bureau of Economic Research, Inc.
- Anders Björklund & Mikael Lindahl & Erik Plug, 2006.
"The Origins of Intergenerational Associations: Lessons from Swedish Adoption Data,"
The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 121(3), pages 999-1028.
- Björklund, Anders & Lindahl, Mikael & Plug, Erik, 2005. "The Origins of Intergenerational Associations: Lessons from Swedish Adoption Data," IZA Discussion Papers 1739, Institute of Labor Economics (IZA).
- Gary S. Becker & Kevin M. Murphy & Robert Tamura, 1994.
"Human Capital, Fertility, and Economic Growth,"
NBER Chapters, in: Human Capital: A Theoretical and Empirical Analysis with Special Reference to Education, Third Edition, pages 323-350,
National Bureau of Economic Research, Inc.
- Becker, Gary S & Murphy, Kevin M & Tamura, Robert, 1990. "Human Capital, Fertility, and Economic Growth," Journal of Political Economy, University of Chicago Press, vol. 98(5), pages 12-37, October.
- Gary S. Becker & Kevin M. Murphy & Robert Tamura, "undated". "Human Capital, Fertility, and Economic Growth," University of Chicago - Population Research Center 90-5a, Chicago - Population Research Center.
- Gary S. Becker & Kevin M. Murphy & Robert F. Tamura, 1990. "Human Capital, Fertility, and Economic Growth," NBER Working Papers 3414, National Bureau of Economic Research, Inc.
- Anders Bohlmark & Matthew J. Lindquist, 2006. "Life-Cycle Variations in the Association between Current and Lifetime Income: Replication and Extension for Sweden," Journal of Labor Economics, University of Chicago Press, vol. 24(4), pages 879-900, October.
- Sandra E. Black & Paul J. Devereux & Kjell G. Salvanes, 2005.
"The More the Merrier? The Effect of Family Size and Birth Order on Children's Education,"
The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 120(2), pages 669-700.
- Paul J. Devereux & Sandra E. Black & Kjell G. Salvanes, 2005. "The more the merrier? The effect of family size and birth order on children's education," Open Access publications 10197/310, School of Economics, University College Dublin.
- S Black & Paul Devereux & Kjell Salvanes, 2005. "The More the Merrier? The Effect of Family Size and Birth Order on Childrens Education," CEE Discussion Papers 0050, Centre for the Economics of Education, LSE.
- Mårten Palme & Sofia Sandgren, 2008.
"Parental Income, Lifetime Income, and Mortality,"
Journal of the European Economic Association, MIT Press, vol. 6(4), pages 890-911, June.
- Palme, Mårten & Sandgren, Sofia, 2007. "Parental Income, Lifetime Income and Mortality," Research Papers in Economics 2007:4, Stockholm University, Department of Economics.
- Solon, Gary, 1999. "Intergenerational mobility in the labor market," Handbook of Labor Economics, in: O. Ashenfelter & D. Card (ed.), Handbook of Labor Economics, edition 1, volume 3, chapter 29, pages 1761-1800, Elsevier.
- Alberto Bisin & Thierry Verdier, 2000.
""Beyond the Melting Pot": Cultural Transmission, Marriage, and the Evolution of Ethnic and Religious Traits,"
The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 115(3), pages 955-988.
- Bisin, A. & Verdier, T., 1999. "Beyond the Melting Pot: Cultural Transmission, Marriage, and the Evolution of Ethnic and Religious Traits," Papers 1999-10, Laval - Laboratoire Econometrie.
- Bisin, A. & Verdier, T., 1999. "Beyond the Melting Pot : Cultural Transmission, Marriage, and the Evolution of Ethnic and Religious Traits," DELTA Working Papers 1999-10, DELTA (Ecole normale supérieure).
- Steven Haider & Gary Solon, 2006.
"Life-Cycle Variation in the Association between Current and Lifetime Earnings,"
American Economic Review, American Economic Association, vol. 96(4), pages 1308-1320, September.
- Steven Haider & Gary Solon, 2006. "Life-Cycle Variation in the Association between Current and Lifetime Earnings," NBER Working Papers 11943, National Bureau of Economic Research, Inc.
- María Sáez‐Martí & Anna Sjögren, 2008.
"Peers and Culture,"
Scandinavian Journal of Economics, Wiley Blackwell, vol. 110(1), pages 73-92, March.
- Sáez-Martí, María & Sjögren, Anna, 2005. "Peers and Culture," Working Paper Series 642, Research Institute of Industrial Economics.
- Maria Saez-Marti & Anna Sj�gren, 2007. "Peers and Culture," IEW - Working Papers 349, Institute for Empirical Research in Economics - University of Zurich.
- Jere R. Behrman & Mark R. Rosenzweig, 2002. "Does Increasing Women's Schooling Raise the Schooling of the Next Generation?," American Economic Review, American Economic Association, vol. 92(1), pages 323-334, March.
- Maurin, Eric, 2002.
"The impact of parental income on early schooling transitions: A re-examination using data over three generations,"
Journal of Public Economics, Elsevier, vol. 85(3), pages 301-332, September.
- Eric Maurin, 1999. "The Impact of Parental Income on Early Schooling Transitions : A Re-examination Using Data over Three Generations," Working Papers 99-69, Center for Research in Economics and Statistics.
- Sandra E. Black & Paul J. Devereux & Kjell G. Salvanes, 2005.
"Why the Apple Doesn't Fall Far: Understanding Intergenerational Transmission of Human Capital,"
American Economic Review, American Economic Association, vol. 95(1), pages 437-449, March.
- Paul J. Devereux & Sandra E. Black & Kjell G. Salvanes, 2003. "Why the apple doesn't fall far : understanding intergenerational transmission of human capital," Open Access publications 10197/750, School of Economics, University College Dublin.
- Paul J. Devereux & Sandra E. Black & Kjell G. Salvanes, 2005. "Why the apple doesn't fall far : understanding intergenerational transmission of human capital," Open Access publications 10197/309, School of Economics, University College Dublin.
- Black, Sandra E. & Devereux, Paul J. & Salvanes, Kjell G., 2003. "Why the Apple Doesn't Fall Far: Understanding Intergenerational Transmission of Human Capital," IZA Discussion Papers 926, Institute of Labor Economics (IZA).
- Sandra E. Black & Paul Devereux & Kjell Salvanes, 2004. "Why the apple doesn't fall far: understanding intergenerational transmission of human capital," Working Paper Series 2004-12, Federal Reserve Bank of San Francisco.
- Sandra E. Black & Paul J. Devereux & Kjell G. Salvanes, 2003. "Why the apple doesn't fall far: understanding intergenerational transmission of human capital," CeMMAP working papers 16/03, Institute for Fiscal Studies.
- Sandra E. Black & Paul J. Devereux & Kjell G. Salvanes, 2003. "Why the apple doesn't fall far: understanding intergenerational transmission of human capital," CeMMAP working papers CWP16/03, Centre for Microdata Methods and Practice, Institute for Fiscal Studies.
- Sandra E. Black & Paul J. Devereux & Kjell G. Salvanes, 2003. "Why the Apple Doesn't Fall Far: Understanding Intergenerational Transmission of Human Capital," NBER Working Papers 10066, National Bureau of Economic Research, Inc.
- Oded Galor & Joseph Zeira, 1993.
"Income Distribution and Macroeconomics,"
The Review of Economic Studies, Review of Economic Studies Ltd, vol. 60(1), pages 35-52.
- Galor, Oded & Zeira, Joseph, 1988. "Income Distribution and Macroeconomics," MPRA Paper 51644, University Library of Munich, Germany, revised 01 Sep 1989.
- Oded Galor & Joseph Zeira, 2013. "Income Distribution and Macroeconomics," Working Papers 2013-12, Brown University, Department of Economics.
- Costas Meghir & Mårten Palme, 2005.
"Educational Reform, Ability, and Family Background,"
American Economic Review, American Economic Association, vol. 95(1), pages 414-424, March.
- Costas Meghir & Mårten Palme, 2004. "Educational reform, ability and family background," IFS Working Papers W04/10, Institute for Fiscal Studies.
- Chul-In Lee & Gary Solon, 2009.
"Trends in Intergenerational Income Mobility,"
The Review of Economics and Statistics, MIT Press, vol. 91(4), pages 766-772, November.
- Chul-In Lee & Gary Solon, 2006. "Trends in Intergenerational Income Mobility," NBER Working Papers 12007, National Bureau of Economic Research, Inc.
- Black, Sandra E. & Devereux, Paul J., 2011.
"Recent Developments in Intergenerational Mobility,"
Handbook of Labor Economics, in: O. Ashenfelter & D. Card (ed.), Handbook of Labor Economics, edition 1, volume 4, chapter 16, pages 1487-1541,
Elsevier.
- Sandra E. Black & Paul J. Devereux, 2010. "Recent Developments in Intergenerational Mobility," Working Papers 201025, Geary Institute, University College Dublin.
- Sandra E Black & Paul J Devereux, 2010. "Recent Developments in Intergenerational Mobility," Working Papers 201010, School of Economics, University College Dublin.
- Black, Sandra & Devereux, Paul J., 2010. "Recent Developments in Intergenerational Mobility," CEPR Discussion Papers 7786, C.E.P.R. Discussion Papers.
- Sandra E. Black & Paul J. Devereux, 2010. "Recent Developments in Intergenerational Mobility," NBER Working Papers 15889, National Bureau of Economic Research, Inc.
- Black, Sandra E. & Devereux, Paul J., 2010. "Recent Developments in Intergenerational Mobility," IZA Discussion Papers 4866, Institute of Labor Economics (IZA).
- Helena Holmlund & Mikael Lindahl & Erik Plug, 2011.
"The Causal Effect of Parents' Schooling on Children's Schooling: A Comparison of Estimation Methods,"
Journal of Economic Literature, American Economic Association, vol. 49(3), pages 615-651, September.
- Holmlund, Helena & Lindahl, Mikael & Plug, Erik, 2008. "The Causal Effect of Parent's Schooling on Children's Schooling: A Comparison of Estimation Methods," IZA Discussion Papers 3630, Institute of Labor Economics (IZA).
- Helena Holmlund & Mikael Lindahl & Erik Plug, 2010. "The Causal Effect of Parents' Schooling on Children's Schooling - A Comparison of Estimation Methods," CESifo Working Paper Series 3234, CESifo.
- Bruce Sacerdote, 2004. "What Happens When We Randomly Assign Children to Families?," NBER Working Papers 10894, National Bureau of Economic Research, Inc.
- Björklund, Anders & Jäntti, Markus & Lindquist, Matthew J., 2009.
"Family background and income during the rise of the welfare state: Brother correlations in income for Swedish men born 1932-1968,"
Journal of Public Economics, Elsevier, vol. 93(5-6), pages 671-680, June.
- Björklund, Anders & Jäntti, Markus & Lindquist, Matthew J., 2007. "Family Background and Income during the Rise of the Welfare State: Brother Correlations in Income for Swedish Men Born 1932-1968," IZA Discussion Papers 3000, Institute of Labor Economics (IZA).
- Erik Plug & Wim Vijverberg, 2005. "Does Family Income Matter for Schooling Outcomes? Using Adoptees as a Natural Experiment," Economic Journal, Royal Economic Society, vol. 115(506), pages 879-906, October.
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Cited by:
- Mikael Lindahl & Mårten Palme & Sofia Sandgren Massih & Anna Sjögren, 2015.
"Long-Term Intergenerational Persistence of Human Capital: An Empirical Analysis of Four Generations,"
Journal of Human Resources, University of Wisconsin Press, vol. 50(1), pages 1-33.
- Lindahl, Mikael & Palme, Mårten & Sandgren Massih, Sofia & Sjögren, Anna, 2013. "Long-term intergenerational persistence of human capital: an empirical analysis of four generations," Research Papers in Economics 2013:3, Stockholm University, Department of Economics.
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More about this item
Keywords
Intergenerational income mobility; earnings distribution; income inequality;All these keywords.
JEL classification:
- D31 - Microeconomics - - Distribution - - - Personal Income and Wealth Distribution
- J62 - Labor and Demographic Economics - - Mobility, Unemployment, Vacancies, and Immigrant Workers - - - Job, Occupational and Intergenerational Mobility; Promotion
NEP fields
This paper has been announced in the following NEP Reports:- NEP-HRM-2012-01-03 (Human Capital and Human Resource Management)
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