Interpreting estimates of heritability – A note on the twin decomposition
While most outcomes may in part be genetically mediated, quantifying genetic heritability is a different matter. To explore data on twins and decompose the variation is a classical method to determine whether variation in outcomes, e.g. IQ or schooling, originate from genetic endowments or environmental factors. Despite some criticism, the model is still widely used. The critique is generally related to how estimates of heritability may encompass environmental mediation. This aspect is sometimes left implicit by authors even though its relevance for the interpretation is potentially profound. This short note is an appeal for clarity from authors when interpreting the magnitude of heritability estimates. It is demonstrated how disregarding existing theoretical contributions can easily lead to unnecessary misinterpretations and/or controversies. The key arguments are relevant also for estimates based on data of adopted children or from modern molecular genetics research.
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- Heckman, James J, 1995. "Lessons from the Bell Curve," Journal of Political Economy, University of Chicago Press, vol. 103(5), pages 1091-1120, October.
- Goldberger, Arthur S, 1978. "The Genetic Determination of Income: Comment," American Economic Review, American Economic Association, vol. 68(5), pages 960-69, December.
- Behrman, Jere R & Taubman, Paul, 1976. "Intergenerational Transmission of Income and Wealth," American Economic Review, American Economic Association, vol. 66(2), pages 436-40, May.
- Behrman, Jere R & Taubman, Paul, 1989. "Is Schooling "Mostly in the Genes"? Nature-N urture Decomposition Using Data on Relatives," Journal of Political Economy, University of Chicago Press, vol. 97(6), pages 1425-46, December.
- Taubman, Paul, 1976. "The Determinants of Earnings: Genetics, Family, and Other Environments; A Study of White Male Twins," American Economic Review, American Economic Association, vol. 66(5), pages 858-70, December.
- James J. Heckman, 2007.
"The Economics, Technology and Neuroscience of Human Capability Formation,"
NBER Working Papers
13195, National Bureau of Economic Research, Inc.
- Heckman, James J., 2007. "The Economics, Technology and Neuroscience of Human Capability Formation," IZA Discussion Papers 2875, Institute for the Study of Labor (IZA).
- David, Cesarini & Dawes, Christopher T. & Johannesson, Magnus & Lichtenstein, Paul & Wallace, Björn, 2007.
"Genetic Variation in Preferences for Giving and Risk-Taking,"
SSE/EFI Working Paper Series in Economics and Finance
679, Stockholm School of Economics, revised 12 Jan 2009.
- David Cesarini & Christopher T. Dawes & Magnus Johannesson & Paul Lichtenstein & Björn Wallace, 2009. "Genetic Variation in Preferences for Giving and Risk Taking," The Quarterly Journal of Economics, Oxford University Press, vol. 124(2), pages 809-842.
- David Cesarini & Magnus Johannesson & Paul Lichtenstein & Björn Wallace, 2009. "Heritability of Overconfidence," Journal of the European Economic Association, MIT Press, vol. 7(2-3), pages 617-627, 04-05.
- Lundborg, Petter & Stenberg, Anders, 2010. "Nature, nurture and socioeconomic policy--What can we learn from molecular genetics?," Economics & Human Biology, Elsevier, vol. 8(3), pages 320-330, December.
- Barnea, Amir & Cronqvist, Henrik & Siegel, Stephan, 2010.
"Nature or nurture: What determines investor behavior?,"
Journal of Financial Economics,
Elsevier, vol. 98(3), pages 583-604, December.
- Barnea, Amir & Cronqvist, Henrik & Siegel, Stephan, 2010. "Nature or Nurture: What Determines Investor Behavior?," SIFR Research Report Series 72, Institute for Financial Research.
- Charles F. Manski, 2011. "Genes, Eyeglasses, and Social Policy," Journal of Economic Perspectives, American Economic Association, vol. 25(4), pages 83-94, Fall.
- David Cesarini & Magnus Johannesson & Paul Lichtenstein & Örjan Sandewall & Björn Wallace, 2010. "Genetic Variation in Financial Decision-Making," Journal of Finance, American Finance Association, vol. 65(5), pages 1725-1754, October.
- Jonathan P. Beauchamp & David Cesarini & Magnus Johannesson & Matthijs J. H. M. van der Loos & Philipp D. Koellinger & Patrick J. F. Groenen & James H. Fowler & J. Niels Rosenquist & A. Roy Thurik & N, 2011. "Molecular Genetics and Economics," Journal of Economic Perspectives, American Economic Association, vol. 25(4), pages 57-82, Fall.
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