The genetic architecture of oral language, reading fluency, and reading comprehension: A twin study from 7 to 16 years
| Autor: | Maria G, Tosto, Marianna E, Hayiou-Thomas, Nicole, Harlaar, Elizabeth, Prom-Wormley, Philip S, Dale, Robert, Plomin |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Male
Language Tests language Adolescent Statistics as Topic Age Factors reading comprehension Vocabulary Children's Cognitive and Social-Cognitive Development genetic architecture reading fluency Reading Humans Speech Female Gene-Environment Interaction Longitudinal Studies twin study Child Comprehension Child Language |
| Zdroj: | Developmental Psychology |
| ISSN: | 1939-0599 |
| Popis: | This study examines the genetic and environmental etiology underlying the development of oral language and reading skills, and the relationship between them, over a long period of developmental time spanning middle childhood and adolescence. It focuses particularly on the differential relationship between language and two different aspects of reading: reading fluency and reading comprehension. Structural equation models were applied to language and reading data at 7, 12, and 16 years from the large-scale TEDS twin study. A series of multivariate twin models show a clear patterning of oral language with reading comprehension, as distinct from reading fluency: significant but moderate genetic overlap between oral language and reading fluency (genetic correlation rg = .46–.58 at 7, 12, and 16) contrasts with very substantial genetic overlap between oral language and reading comprehension (rg = .81–.87, at 12 and 16). This pattern is even clearer in a latent factors model, fit to the data aggregated across ages, in which a single factor representing oral language and reading comprehension is correlated with—but distinct from—a second factor representing reading fluency. A distinction between oral language and reading fluency is also apparent in different developmental trajectories: While the heritability of oral language increases over the period from 7 to 12 to 16 years (from h2 = .27 to .47 to .55), the heritability of reading fluency is high and largely stable over the same period of time (h2 = .73 to .71 to .64). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|