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Conversational Language Use as a Predictor of Early Reading Development: Language History as a Moderating Variable
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DeThorne, Laura Segebart; Petrill, Stephen A.; Schatschneider, Chris; Cutting, Laurie – Journal of Speech, Language, and Hearing Research, 2010
Purpose: The present study examined the nature of concurrent and predictive associations between conversational language use and reading development during early school-age years. Method: Language and reading data from 380 twins in the Western Reserve Reading Project were examined via phenotypic correlations and multilevel modeling on exploratory…
Descriptors: Speech, Early Reading, Diachronic Linguistics, Oral Language
Genetic and Environmental Influences on the Growth of Early Reading Skills
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Petrill, Stephen A.; Hart, Sara A.; Harlaar, Nicole; Logan, Jessica; Justice, Laura M.; Schatschneider, Christopher; Thompson, Lee; DeThorne, Laura S.; Deater-Deckard, Kirby; Cutting, Laurie – Journal of Child Psychology and Psychiatry, 2010
Background: Studies have suggested genetic and environmental influences on overall level of early reading whereas the larger reading literature has shown environmental influences on the rate of growth of early reading skills. This study is the first to examine the genetic and environmental influences on both initial level of performance and rate…
Descriptors: Twins, Phonemes, Early Reading, Home Visits
Longitudinal Genetic Analysis of Early Reading: The Western Reserve Reading Project
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Petrill, Stephen A.; Deater-Deckard, Kirby; Thompson, Lee Anne; Schatschneider, Chris; DeThorne, Laura S.; Vandenbergh, David J. – Reading and Writing: An Interdisciplinary Journal, 2007
We examined the genetic and environmental contribution to the stability and instability of reading outcomes in early elementary school using a sample of 283 twin pairs drawn from the Western Reserve Reading Project. Twins were assessed across two measurement occasions. In Wave 1, children were either in kindergarten or first grade. Wave 2…
Descriptors: Grade 1, Early Reading, Environmental Influences, Twins
Order in the House!: Associations among Household Chaos, the Home Literacy Environment, Maternal Reading Ability, and Children's Early Reading
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Johnson, Anna D.; Martin, Anne; Brooks-Gunn, Jeanne; Petrill, Stephen A. – Merrill-Palmer Quarterly: Journal of Developmental Psychology, 2008
The current study examines whether associations exist between household chaos and children's early reading skills, after controlling for a comprehensive battery of home literacy environment characteristics. Our sample included 455 kindergarten and first-grade children who are enrolled in the Western Reserve Reading Project. We go on to test…
Descriptors: Early Reading, Mothers, Phonological Awareness, Literacy
Reading Skills in Early Readers: Genetic and Shared Environmental Influences
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Petrill, Stephen A.; Deater-Deckard, Kirby; Thompson, Lee Anne; DeThorne, Laura S.; Schatschneider, Christopher – Journal of Learning Disabilities, 2006
The present study combined parallel data from the Northeast-Northwest Collaborative Adoption Projects (N2CAP) and the Western Reserve Reading Project (WRRP) to examine sibling similarity and quantitative genetic model estimates for measures of reading skills in 272 school-age sibling pairs from three family types (monozygotic twins, dizygotic…
Descriptors: Environmental Influences, Cognitive Ability, Twins, Reading Skills
Measured Environmental Influences on Early Reading: Evidence From an Adoption Study
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Petrill, Stephen A.; Deater-Deckard, Kirby; Schatschneider, Christopher; Davis, Chayna – Scientific Studies of Reading, 2005
Many studies have examined the relationship between environmental processes and literacy outcomes. However, nearly all of this research has examined biologically related family members living together, thus confounding genetic and environmental influences. The purpose of this study was to address this issue using a sample of 262 adopted children…
Descriptors: Early Reading, Environmental Influences, Family Environment, Educational Attitudes