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Furnes, Bjarte; Samuelsson, Stefan – Journal of Research in Reading, 2009
The importance of cognitive and language skills on reading and spelling development were investigated in a cross-linguistic longitudinal study of 737 English-speaking children (US/Australia) and 169 Scandinavian children (Norway/Sweden) from preschool to Kindergarten and Grade 1. The results revealed that phonological awareness and print knowledge…
Descriptors: Spelling, Early Reading, Linguistics, Phonological Awareness
Samuelsson, Stefan; Byrne, Brian; Olson, Richard K.; Hulslander, Jacqueline; Wadsworth, Sally; Corley, Robin; Willcutt, Erik G.; DeFries, John C. – Learning and Individual Differences, 2008
Genetic and environmental influences on early reading and spelling at the end of kindergarten and Grade 1 were compared across three twin samples tested in the United States, Australia, and Scandinavia. Proportions of variance due to genetic influences on kindergarten reading were estimated at 0.84 in Australia, 0.68 in the U.S., and 0.33 in…
Descriptors: Twins, Spelling, Early Reading, Genetics
Samuelsson, Stefan; Olson, Richard; Wadsworth, Sally; Corley, Robin; DeFries, John C.; Willcutt, Erik; Hulslander, Jacqueline; Byrne, Brian – Reading and Writing: An Interdisciplinary Journal, 2007
Genetic and environmental influences on prereading skills in preschool and on early reading and spelling development at the end of kindergarten were compared among samples of identical and fraternal twins from the U.S. (Colorado), Australia, and Scandinavia. Mean comparisons revealed significantly lower preschool print knowledge in Scandinavia,…
Descriptors: Foreign Countries, Early Reading, Reading Instruction, Kindergarten