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Grasby, Katrina L.; Little, Callie W.; Byrne, Brian; Coventry, William L.; Olson, Richard K.; Larsen, Sally; Samuelsson, Stefan – Journal of Educational Psychology, 2020
Classroom-level influences on literacy skills in kindergarten through Grade 2, and on literacy and numeracy skills in Grades 3, 5, 7, and 9, were examined by comparing the similarity of twins who shared or did not share classrooms with each other. We analyzed two samples using structural equation modeling adapted for twin data. The first, Study 1,…
Descriptors: Literacy, Numeracy, Twins, Classroom Environment
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Nielsen, Kathleen; Abbott, Robert; Griffin, Whitney; Lott, Joe; Raskind, Wendy; Berninger, Virginia W. – Learning Disabilities: A Multidisciplinary Journal, 2016
The same working memory and reading and writing achievement phenotypes (behavioral markers of genetic variants) validated in prior research with younger children and older adults in a multi-generational family genetics study of dyslexia were used to study 81 adolescent and young adults (ages 16 to 25) from that study. Dyslexia is impaired word…
Descriptors: Evidence Based Practice, Reading Achievement, Writing Evaluation, Dyslexia