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Direct linkOlson, Richard K.; Keenan, Janice M.; Byrne, Brian; Samuelsson, Stefan – Scientific Studies of Reading, 2014
Modern behavior-genetic studies of twins in the United States, Australia, Scandinavia, and the United Kingdom show that genes account for most of the variance in children's reading ability by the end of the 1st year of formal reading instruction. Strong genetic influence continues across the grades, though the relevant genes vary for reading words…
Descriptors: Reading Skills, Skill Development, Child Development, Genetics
