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Haworth, Claire M. A.; Dale, Philip; Plomin, Robert – International Journal of Science Education, 2008
We investigated for the first time the genetic and environmental aetiology behind scientific achievement in primary school children, with a special focus on possible aetiological differences for boys and girls. For a representative community sample of 2,602 twin pairs assessed at age nine years, scientific achievement in school was rated by…
Descriptors: Twins, Genetics, Environmental Influences, Elementary School Students
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Saudino, Kimberly J.; Plomin, Robert – Child Development, 2007
Although a negative association between hyperactivity and academic achievement is well documented, little is known about the genetic and/or environmental mechanisms responsible for the association. The present study explored links between parent and teacher ratings of hyperactive behavior problems and teacher-assessed achievement in a sample of…
Descriptors: Behavior Problems, Hyperactivity, Genetics, Academic Achievement