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Bias in the estimation of heritability from truncated samples of twins

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Sampling twins from a truncated distribution and ignoring this truncation in the estimation procedure lowers correlation coefficients and can considerably bias estimates of the proportions of genetic and environmental variance. A greater proportion of DZ than MZ twins will be missed in sampling for any heritable trait. The implications for two published sets of educational achievement data are considered.

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  • Bulmer, M. G. (1970).The Biology of Twinning in Man, Oxford University Press, London.

    Google Scholar 

  • Curnow, R. N., and Dunnet, C. W. (1962). The numerical evaluation of certain multivariate normal integrals.Ann. Math. Stat. 33:571–579.

    Google Scholar 

  • Eaves, L. J., Last, K. A., Young, P. A., and Martin, N. G. (1978). Model-fitting approaches to the analysis of human behaviour.Heredity 41:249–320.

    Google Scholar 

  • Jinks, J. L., and Fulker, D. W. (1970). Comparison of the biometrical genetical, MAVA, and classical approaches to the analysis of human behavior.Psychol. Bull.,73:311–349.

    Google Scholar 

  • Loehlin, J. C., and Nichols, R. C. (1976).Heredity, Environment & Personality, University of Texas Press, Austin and London.

    Google Scholar 

  • Lykken, D. T., Tellegen, A., and DeRubeis, R. (1978). Volunteer bias in twin research: The rule of two-thirds.Soc. Biol. 25:1–9.

    Google Scholar 

  • Martin, N. G. (1975). The inheritance of scholastic abilities in a sample of twins. II. Genetical analysis of examination results.Ann. Hum. Genet. Lond. 39:219–229.

    Google Scholar 

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Martin, N.G., Wilson, S.R. Bias in the estimation of heritability from truncated samples of twins. Behav Genet 12, 467–472 (1982).

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