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Direct linkHarkness, Susan; Gregg, Paul; Fernández-Salgado, Mariña – Child Development, 2020
This article assessed changes in the association between single motherhood and children's verbal cognitive ability at age-11 using data from three cohorts of British children, born in 1958 (n = 10,675), 1970 (n = 8,933) and 2000 (n = 9,989), and mediation analysis. Consistent with previous studies, direct effects were small and insignificant. For…
Descriptors: Foreign Countries, One Parent Family, Mothers, Verbal Ability
Haworth, Claire M. A.; Dale, Philip S.; Plomin, Robert – Child Development, 2009
During childhood and adolescence, increases in heritability and decreases in shared environmental influences have typically been found for cognitive abilities. A sample of more than 2,500 pairs of twins from the Twins Early Development Study was used to investigate whether a similar pattern would be found for science performance from 9 to 12…
Descriptors: Twins, Etiology, Environmental Influences, Cognitive Ability
