The Library
Overlap and specificity of genetic and environmental influences on mathematics and reading disability in 10-year-old twins
Tools
Kovas, Yulia, Haworth, Claire M. A., Harlaar, Nicole, Petrill, Stephen A., Dale, Philip S. and Plomin, Robert (2007) Overlap and specificity of genetic and environmental influences on mathematics and reading disability in 10-year-old twins. Journal of Child Psychology and Psychiatry, Volume 48 (Number 9). pp. 914-922. doi:10.1111/j.1469-7610.2007.01748..x ISSN 0021-9630.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://dx.doi.org/10.1111/j.1469-7610.2007.01748.....
Abstract
Background: To what extent do genetic and environmental influences on reading disability overlap with those on mathematics disability? Multivariate genetic research on the normal range of variation in unselected samples has led to a Generalist Genes Hypothesis which posits that the same genes largely affect individual differences in these abilities in the normal range. However, little is known about the etiology of co-morbidity for the disability extremes of reading and mathematics.
Method: From 2596 pairs of 10-year-old monozygotic and dizygotic twins assessed on a web-based battery of reading and mathematics tests, we selected the lowest 15% on reading and on mathematics. We conducted bivariate DeFries–Fulker (DF) extremes analyses to assess overlap and specificity of genetic and environmental influences on reading and mathematics disability defined by a 15% cut-off.
Results: Both reading and mathematics disability are moderately heritable (47% and 43%, respectively) and show only modest shared environmental influence (16% and 20%). There is substantial phenotypic co-morbidity between reading and mathematics disability. Bivariate DF extremes analyses yielded a genetic correlation of .67 between reading disability and mathematics disability, suggesting that they are affected largely by the same genetic factors. The shared environmental correlation is .96 and the non-shared environmental correlation is .08.
Conclusions: In line with the Generalist Genes Hypothesis, the same set of generalist genes largely affects mathematical and reading disabilities. The dissociation between the disabilities occurs largely due to independent non-shared environmental influences.
Item Type: | Journal Article | ||||
---|---|---|---|---|---|
Divisions: | Faculty of Science, Engineering and Medicine > Science > Psychology | ||||
Journal or Publication Title: | Journal of Child Psychology and Psychiatry | ||||
Publisher: | Wiley-Blackwell Publishing Ltd. | ||||
ISSN: | 0021-9630 | ||||
Official Date: | September 2007 | ||||
Dates: |
|
||||
Volume: | Volume 48 | ||||
Number: | Number 9 | ||||
Page Range: | pp. 914-922 | ||||
DOI: | 10.1111/j.1469-7610.2007.01748..x | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |