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Mathematics Is Differentially Related to Reading Comprehension and Word Decoding: Evidence from a Genetically Sensitive Design
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Harlaar, Nicole; Kovas, Yulia; Dale, Philip S.; Petrill, Stephen A.; Plomin, Robert – Journal of Educational Psychology, 2012
Although evidence suggests that individual differences in reading and mathematics skills are correlated, this relationship has typically only been studied in relation to word decoding or global measures of reading. It is unclear whether mathematics is differentially related to word decoding and reading comprehension. In the current study, the…
Descriptors: Genetics, Mathematics Skills, Reading Comprehension, Twins
Evidence for Shared Genetic Risk between ADHD Symptoms and Reduced Mathematics Ability: A Twin Study
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Greven, Corina U.; Kovas, Yulia; Willcutt, Erik G.; Petrill, Stephen A.; Plomin, Robert – Journal of Child Psychology and Psychiatry, 2013
Background: Attention-deficit/hyperactivity disorder (ADHD) symptoms and mathematics ability are associated, but little is known about the genetic and environmental influences underlying this association. Methods: Data came from more than 6,000 twelve-year-old twin pairs from the UK population-representative Twins Early Development Study. Parents…
Descriptors: Attention Deficit Hyperactivity Disorder, Symptoms (Individual Disorders), Genetic Disorders, Environmental Influences