The heritability of general cognitive ability increases linearly from childhood to young adulthood.
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Haworth CM, et al. Among authors: hart sa.
Mol Psychiatry. 2010 Nov;15(11):1112-20. doi: 10.1038/mp.2009.55. Epub 2009 Jun 2.
Mol Psychiatry. 2010.
PMID: 19488046
Free PMC article.