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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- Bias in the estimation of heritability from truncated samples of twins
Volume 12, Issue 4 , pp 467-472
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- Online ISSN
- Kluwer Academic Publishers-Plenum Publishers
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- educational achievement
- Author Affiliations
- 1. Department of Population Biology, Research School of Biological Sciences, Australian National University, Canberra, Australia
- 2. Department of Statistics, Research School of Social Sciences, Australian National University, Canberra, Australia