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Direct linkBjarte Furnes; Åsa Elwér; Stefan Samuelsson; Rebecca Treiman; Richard K. Olson – Reading and Writing: An Interdisciplinary Journal, 2024
We investigated the stability and developmental interplay of word reading and spelling in samples of Swedish (N = 191) and U.S. children (N = 489) followed across four time points: end of kindergarten, grades 1, 2, and 4. Cross-lagged path models revealed that reading and spelling showed moderate to strong autoregressive effects, with reading…
Descriptors: Longitudinal Studies, Correlation, Reading Processes, Word Recognition
Gustafson, Stefan; Nordström, Thomas; Andersson, Ulrika B.; Fälth, Linda; Ingvar, Martin – Education, 2019
We present quantitative results from the pilot-year of a large scale Swedish educational project in reading development called LegiLexi, inspired by research within the response to intervention and formative assessment traditions. The vision of the project is that every pupil should reach adequate reading skills at the end of grade 3 in primary…
Descriptors: Foreign Countries, Formative Evaluation, Reading Skills, Reading Instruction
Olson, 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
Olson, Richard K.; Keenan, Janice M.; Byrne, Brian; Samuelsson, Stefan; Coventry, William L.; Corley, Robin; Wadsworth, Sally J.; Willcutt, Erik G.; DeFries, John C.; Pennington, Bruce F.; Hulslander, Jacqueline – Scientific Studies of Reading, 2011
Genetic and environmental relations between vocabulary and reading skills were explored longitudinally from preschool through Grades 2 and 4. At preschool there were strong shared-environment and weak genetic influences on both vocabulary and print knowledge but substantial differences in their source. Separation of etiology for vocabulary and…
Descriptors: Reading Comprehension, Genetics, Word Recognition, Etiology
Byrne, Brian; Wadsworth, Sally; Boehme, Kristi; Talk, Andrew C.; Coventry, William L.; Olson, Richard K.; Samuelsson, Stefan; Corley, Robin – Scientific Studies of Reading, 2013
The genetic factor structure of a range of learning measures was explored in twin children, recruited in preschool and followed to Grade 2 ("N"?=?2,084). Measures of orthographic learning and word reading were included in the analyses to determine how these patterned with the learning processes. An exploratory factor analysis of the…
Descriptors: Genetics, Preschool Children, Elementary School Students, Kindergarten
Gustafson, Stefan; Falth, Linda; Svensson, Idor; Tjus, Tomas; Heimann, Mikael – Journal of Learning Disabilities, 2011
In a longitudinal intervention study, the effects of three intervention strategies on the reading skills of children with reading disabilities in Grade 2 were analyzed. The interventions consisted of computerized training programs: One bottom-up intervention aimed at improving word decoding skills and phonological abilities, the second…
Descriptors: Reading Difficulties, Intervention, Disabilities, Decoding (Reading)
