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| Journal of Child Psychology… | 1 |
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Direct linkHarlaar, 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
