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Direct linkHaworth, Claire M. A.; Davis, Oliver S. P.; Hanscombe, Ken B.; Kovas, Yulia; Dale, Philip S.; Plomin, Robert – Learning and Individual Differences, 2013
Previous studies have shown that environmental influences on school science performance increase in importance from primary to secondary school. Here we assess for the first time the relationship between the science-learning environment and science performance using a genetically sensitive approach to investigate the aetiology of this link. 3000…
Descriptors: Foreign Countries, Educational Environment, Science Education, Twins
Petrill, Stephen; Logan, Jessica; Hart, Sara; Vincent, Pamela; Thompson, Lee; Kovas, Yulia; Plomin, Robert – Journal of Learning Disabilities, 2012
The authors examined whether math fluency was independent from untimed math and from reading using 314 pairs of school-aged twins drawn from the Western Reserve Reading and Math Projects. Twins were assessed through a 90-min home visit at approximately age 10 and were reassessed in their homes approximately 1 year later. Results suggested that the…
Descriptors: Mathematics Achievement, Twins, Reading Fluency, Home Visits
Haworth, Claire M. A.; Kovas, Yulia; Dale, Philip S.; Plomin, Robert – Intelligence, 2008
Using a genetically sensitive design, we investigated the etiology of academic performance in Science in elementary school, and its etiological links with other academic abilities and general cognitive ability ("g"). The sample consisted of over 2000 pairs of twins at 10 years of age from the Twins Early Development Study. Science performance, as…
Descriptors: Twins, Genetics, Etiology, Environmental Influences
