Haworth, C.; Kovas, Yulia; Petrill, S. and Plomin, R.. 2007. Developmental Origins of Low Mathematics Performance and Normal Variation in Twins from 7 to 9 Years. Twin Research and Human Genetics, 10(1), pp. 106-117. ISSN 1832-4274 [Article]

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Abstract or Description

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:	Article
Identification Number (DOI):	https://doi.org/10.1375/twin.10.1.106
Keywords:	GENERAL COGNITIVE-ABILITY ACADEMIC-ACHIEVEMENT MULTIVARIATE 7-YEAR-OLDS ETIOLOGY CHILDREN NURTURE
Departments, Centres and Research Units:	Psychology
Dates:	Date Event 2007 Published
Item ID:	3241
Date Deposited:	02 Jul 2010 07:28
Last Modified:	04 Jul 2017 09:25
Peer Reviewed:	Yes, this version has been peer-reviewed.
URI:	https://research.gold.ac.uk/id/eprint/3241

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