Genetic and Environmental Etiologies of the Longitudinal Relations Between Prereading Skills and Reading.

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Bibliographic Details
Title: Genetic and Environmental Etiologies of the Longitudinal Relations Between Prereading Skills and Reading.
Authors: Christopher, Micaela E., Hulslander, Jacqueline, Byrne, Brian, Samuelsson, Stefan, Keenan, Janice M., Pennington, Bruce, DeFries, John C., Wadsworth, Sally J., Willcutt, Erik, Olson, Richard K.
Source: Child Development. Mar/Apr2015, Vol. 86 Issue 2, p342-361. 20p. 4 Diagrams, 2 Charts.
Subjects: Reading level of students, Nature & nurture, Reading readiness, Pre-reading experiences, Genetics of learning ability, Reading (Early childhood), Reading (Elementary), Reading ability testing, Reading, Longitudinal method, Twin studies
Geographic Terms: United States
Abstract: The present study explored the environmental and genetic etiologies of the longitudinal relations between prereading skills and reading and spelling. Twin pairs ( n = 489) were assessed before kindergarten ( M = 4.9 years), post-first grade ( M = 7.4 years), and post-fourth grade ( M = 10.4 years). Genetic influences on five prereading skills (print knowledge, rapid naming, phonological awareness, vocabulary, and verbal memory) were primarily responsible for relations with word reading and spelling. However, relations with post-fourth-grade reading comprehension were due to both genetic and shared environmental influences. Genetic and shared environmental influences that were common among the prereading variables covaried with reading and spelling, as did genetic influences unique to verbal memory (only post-fourth-grade comprehension), print knowledge, and rapid naming. [ABSTRACT FROM AUTHOR]
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Database: Psychology and Behavioral Sciences Collection
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Abstract:The present study explored the environmental and genetic etiologies of the longitudinal relations between prereading skills and reading and spelling. Twin pairs ( n = 489) were assessed before kindergarten ( M = 4.9 years), post-first grade ( M = 7.4 years), and post-fourth grade ( M = 10.4 years). Genetic influences on five prereading skills (print knowledge, rapid naming, phonological awareness, vocabulary, and verbal memory) were primarily responsible for relations with word reading and spelling. However, relations with post-fourth-grade reading comprehension were due to both genetic and shared environmental influences. Genetic and shared environmental influences that were common among the prereading variables covaried with reading and spelling, as did genetic influences unique to verbal memory (only post-fourth-grade comprehension), print knowledge, and rapid naming. [ABSTRACT FROM AUTHOR]
ISSN:00093920
DOI:10.1111/cdev.12295