Genetic and environmental influence on language impairment in 4-year-old same-sex and opposite-sex twins
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...
| Main Authors: | , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal article |
| Language: | English |
| Published: |
Blackwell Publishers
2004
|
| Subjects: |