Descriptor
| Environmental Influences | 2 |
| Etiology | 2 |
| Genetics | 2 |
| Language Aptitude | 2 |
| Twins | 2 |
| Foreign Countries | 1 |
| Gender Differences | 1 |
| Language Acquisition | 1 |
| Language Impairments | 1 |
| Language Skills | 1 |
| Language Tests | 1 |
| More ▼ | |
Author
| Bishop, Dorothy V. M. | 2 |
| Dale, Philip S. | 2 |
| Plomin, Robert | 2 |
| Hayiou-Thomas, Marianna E. | 1 |
| Kovas, Yulia | 1 |
| Oliver, Bonamy | 1 |
| Price, Thomas S. | 1 |
| Spinath, Frank M. | 1 |
| Viding, Essi | 1 |
Publication Type
| Journal Articles | 2 |
| Reports - Evaluative | 1 |
| Reports - Research | 1 |
Education Level
| Early Childhood Education | 1 |
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Peer reviewed
Direct linkKovas, Yulia; Hayiou-Thomas, Marianna E.; Oliver, Bonamy; Dale, Philip S.; Bishop, Dorothy V. M.; Plomin, Robert – Child Development, 2005
The genetic and environmental etiologies of diverse aspects of language ability and disability, including articulation, phonology, grammar, vocabulary, and verbal memory, were investigated in a U.K. sample of 787 pairs of 4.5-year-old same-sex and opposite-sex twins. Moderate genetic influence was found for all aspects of language in the normal…
Descriptors: Phonology, Language Skills, Environmental Influences, Etiology
Viding, Essi; Spinath, Frank M.; Price, Thomas S.; Bishop, Dorothy V. M.; Dale, Philip S.; Plomin, Robert – Journal of Child Psychology and Psychiatry, 2004
Background: We investigated the aetiology of language impairment in 579 four-year-old twins with low language performance and their co-twins, members of 160 MZ twin pairs, 131 same-sex DZ pairs and 102 opposite-sex DZ pairs. Methods: Language impairment in 4-year-olds was defined by scores below the 15th percentile on a general factor derived from…
Descriptors: Twins, Etiology, Language Impairments, Language Tests
