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Oliver, Bonamy R.; Dale, Philip S.; Plomin, Robert – Cognitive Development, 2007
A behavioral genetic analysis of general writing ability was conducted using teacher assessments based on UK National Curriculum criteria for a sample of 3296 same-sex pairs of 7-year-old twins. Writing was highly heritable within the normal range (0.66) and at the low extreme (0.70). Environmental influences were almost all non-shared, with…
Descriptors: Writing Ability, Reading Skills, National Curriculum, Genetics