Hoekstra, Rosa A.; Bartels, Meike; Van Leeuwen, Marieke and Boomsma, Dorret I.
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|DOI (Digital Object Identifier) Link:||http://doi.org/10.1111/j.1467-7687.2009.00843.x|
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The etiology of individual differences in general verbal ability, verbal learning and letter and category fluency were examined in two independent samples of 9- and 18-year-old twin pairs and their siblings. In both age groups, we observed strong familial resemblance for general verbal ability and moderate familial resemblance for verbal learning, letter and category fluency. All familial resemblance was explained by genetic factors. There was significant covariance among the tests, which was stronger in magnitude in the adolescent cohort. The covariance was mainly explained by genetic effects shared by subtests, both in middle childhood and in late adolescence. In addition to a shared set of genes that influenced all phenotypes, there were also genetic influences specific to the different verbal phenotypes.
|Item Type:||Journal Article|
|Copyright Holders:||2009 Blackwell Publishing Ltd|
|Extra Information:||The definitive version is available at www3.interscience.wiley.com|
|Academic Unit/Department:||Faculty of Science, Technology, Engineering and Mathematics (STEM) > Life, Health and Chemical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
|Interdisciplinary Research Centre:||Biomedical Research Network (BRN)|
|Depositing User:||Rosa Hoekstra|
|Date Deposited:||09 Jun 2009 15:27|
|Last Modified:||03 Aug 2016 13:51|
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