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Developmental origins of low mathematics performance and normal variation in twins from 7 to 9 years
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Haworth, Claire M. A., Kovas, Yulia, Petrill, Stephen A. and Plomin, Robert (2007) Developmental origins of low mathematics performance and normal variation in twins from 7 to 9 years. Twin Research and Human Genetics, Volume 10 (Number 1). pp. 106-17. doi:10.1375/twin.10.1.106 ISSN 1832-4274.
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Official URL: http://dx.doi.org/10.1375/twin.10.1.106
Abstract
A previous publication reported the etiology of mathematics performance in 7-year-old twins (Oliver et al., 2004). As part of the same longitudinal study we investigated low mathematics performance and normal variation in a representative United Kingdom sample of 1713 same-sex 9-year-old twins based on teacher-assessed National Curriculum standards. Univariate individual differences and DeFries-Fulker extremes analyses were performed. Similar to our results at 7 years, all mathematics scores at 9 years showed high heritability (.62-.75) and low shared environmental estimates (.00-.11) for both the low performance group and the full sample. Longitudinal analyses were performed from 7 to 9 years. These longitudinal analyses indicated strong genetic continuity from 7 to 9 years for both low performance and mathematics in the normal range. We conclude that, despite the considerable differences in mathematics curricula from 7 to 9 years, the same genetic effects largely operate at the two ages.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Psychology | ||||
Journal or Publication Title: | Twin Research and Human Genetics | ||||
Publisher: | Cambridge University Press | ||||
ISSN: | 1832-4274 | ||||
Official Date: | February 2007 | ||||
Dates: |
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Volume: | Volume 10 | ||||
Number: | Number 1 | ||||
Page Range: | pp. 106-17 | ||||
DOI: | 10.1375/twin.10.1.106 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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