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Fujisawa, Keiko K.; Todo, Naoya; Ando, Juko – Infant and Child Development, 2017
Executive functions (EF) are an important predictor of later adaptive development. A number of environmental influences, such as parenting, have been suggested as important promoters of EF development. However, behavioural genetic research has demonstrated that many environmental influences could be affected by genetic influences. Therefore, it is…
Descriptors: Genetics, Environmental Influences, Preschool Children, Correlation
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Harlaar, Nicole; Butcher, Lee M.; Meaburn, Emma; Sham, Pak; Craig, Ian W.; Plomin, Robert – Journal of Child Psychology and Psychiatry, 2005
Background: Five DNA markers (single-nucleotide polymorphisms, SNPs) have recently been found to be associated with general cognitive ability "g") in a sample of 7414 7-year-old twins. These children have also been studied at 2, 3, 4, and 7 years of age on measures of cognitive and language development and behaviour problems; family environment…
Descriptors: Discipline, Effect Size, Family Environment, Nonverbal Ability