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Direct linkLittle, Callie W.; Hart, Sara A.; Quinn, Jamie M.; Tucker-Drob, Elliot M.; Taylor, Jeanette; Schatschneider, Christopher – Child Development, 2017
This study explores the co-development of two related but separate reading skills, reading fluency and reading comprehension, across Grades 1-4. A bivariate biometric dual change score model was applied to longitudinal data collected from 1,784 twin pairs between the ages of 6 and 10 years. Grade 1 skills were influenced by highly overlapping…
Descriptors: Reading Skills, Reading Instruction, Reading Fluency, Reading Comprehension
Schatschneider, Christopher; Wagner, Richard K.; Hart, Sara A.; Tighe, Elizabeth L. – Scientific Studies of Reading, 2016
The present study employed data simulation techniques to investigate the 1-year stability of alternative classification schemes for identifying children with reading disabilities. Classification schemes investigated include low performance, unexpected low performance, dual-discrepancy, and a rudimentary form of constellation model of reading…
Descriptors: Reading Difficulties, Learning Disabilities, At Risk Students, Disability Identification
Spencer, Mercedes; Wagner, Richard K.; Schatschneider, Christopher; Quinn, Jamie M.; Lopez, Danielle; Petscher, Yaacov – Learning Disability Quarterly, 2014
The present study seeks to evaluate a hybrid model of identification that incorporates response to instruction and intervention (RTI) as one of the key symptoms of reading disability. The 1-year stability of alternative operational definitions of reading disability was examined in a large-scale sample of students who were followed longitudinally…
Descriptors: Reading Difficulties, Response to Intervention, Models, Longitudinal Studies
Hart, Sara A.; Taylor, Jeanette; Schatschneider, Christopher – Assessment for Effective Intervention, 2013
This study introduces a co-twin control method commonly used in the medical literature but not often within educational research. This method allows for a comparison of twins discordant for an "exposure," approximating alternative outcomes in the counterfactual model. Example analyses use data drawn from the Florida Twin Project on…
Descriptors: Academic Achievement, Teacher Effectiveness, Reading Fluency, Educational Research
Hart, Sara A.; Logan, Jessica A. R.; Soden-Hensler, Brooke; Kershaw, Sarah; Taylor, Jeanette; Schatschneider, Christopher – Developmental Psychology, 2013
Research on the development of reading skills through the primary school years has pointed to the importance of individual differences in initial ability as well as the growth of those skills. Additionally, it has been theorized that reading skills develop incrementally. The present study examined the genetic and environmental influences on 2…
Descriptors: Nature Nurture Controversy, Twins, Reading Skills, Reading Fluency
Waesche, Jessica S. Brown; Schatschneider, Christopher; Maner, Jon K.; Ahmed, Yusra; Wagner, Richard K. – Journal of Learning Disabilities, 2011
Rates of agreement among alternative definitions of reading disability and their 1- and 2-year stabilities were examined using a new measure of agreement, the affected-status agreement statistic. Participants were 288,114 first through third grade students. Reading measures were "Dynamic Indicators of Basic Early Literacy Skills" Oral…
Descriptors: Reading Fluency, Definitions, Economically Disadvantaged, Low Achievement
