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Two by two : a twin study of second-language acquisition
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Dale, Philip S., Harlaar, Nicole, Haworth, Claire M. A. and Plomin, Robert (2010) Two by two : a twin study of second-language acquisition. Psychological Science, Volume 21 (Number 5). pp. 635-640. doi:10.1177/0956797610368060 ISSN 1467-9280.
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Official URL: http://dx.doi.org/10.1177/0956797610368060
Abstract
In this report, we provide initial results of the first application of the classic twin design to second-language acquisition. The analysis was conducted on assessments teachers made using United Kingdom National Curriculum standards and included 604 pairs of 14-year-old twins. The results demonstrate substantial heritability (.67) and low influence of shared environment (.13) on this measure of second-language acquisition. The heritability of second-language acquisition at 14 years is comparable to the heritability of the two first-language acquisition measures obtained at 12 and 14 years, respectively, and is higher than heritability estimates previously published for first-language acquisition in early childhood. Multivariate behavior genetic analyses suggest very high, but not complete, overlap of genetic influences on first- and second-language acquisition, and less overlap between shared environmental influences on the two domains.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Psychology | ||||
Journal or Publication Title: | Psychological Science | ||||
Publisher: | Sage Publications Ltd. | ||||
ISSN: | 1467-9280 | ||||
Official Date: | May 2010 | ||||
Dates: |
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Volume: | Volume 21 | ||||
Number: | Number 5 | ||||
Page Range: | pp. 635-640 | ||||
DOI: | 10.1177/0956797610368060 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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