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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
Swanson, H. Lee; Kudo, Milagros; Guzman-Orth, Danielle – Journal of Educational Psychology, 2016
This study investigated the prevalence and stability of latent classes at risk for reading disabilities (RD) in elementary-aged children whose first language is Spanish. To this end, children (N = 489) in Grades 1, 2, and 3 at Wave 1 were administered a battery of reading, vocabulary, and cognitive measures (short-term memory [STM], working memory…
Descriptors: English Language Learners, At Risk Students, Reading Difficulties, Learning Disabilities
Byrne, Brian; Coventry, William L.; Olson, Richard K.; Wadsworth, Sally J.; Samuelsson, Stefan; Petrill, Stephen A.; Willcutt, Erik G.; Corley, Robin – Journal of Educational Psychology, 2010
It is often assumed that differences in teacher characteristics are a major source of variability in children's educational achievements. We examine this assumption for early literacy achievement by calculating the correlations between pairs of twin children who either shared or did not share a teacher in kindergarten, Grade 1, and Grade 2.…
Descriptors: Twins, Teacher Characteristics, Academic Achievement, Emergent Literacy
Vadasy, Patricia F.; Sanders, Elizabeth A. – Journal of Educational Psychology, 2012
The current study follows a sample of lower skilled language minority (LM) and native English-speaking (non-LM) students who participated in an efficacy trial of a kindergarten phonics-based intervention. Follow-up procedures allowed 93% of the original sample to be retained for simple treatment effects modeling (N = 78 LM and N = 59 non-LM) and…
Descriptors: Followup Studies, Kindergarten, Reading Instruction, Intervention
Lonigan, Christopher J.; Anthony, Jason L.; Phillips, Beth M.; Purpura, David J.; Wilson, Shauna B.; McQueen, Jessica D. – Journal of Educational Psychology, 2009
The development of reading-related phonological processing abilities represents an important developmental milestone in the process of learning to read. In this cross-sectional study, confirmatory factor analysis was used to examine the structure of phonological processing abilities in 129 younger preschoolers (M = 40.88 months, SD = 4.65) and 304…
Descriptors: Reading Difficulties, Phonological Awareness, Factor Analysis, Memory