Article
Genetic basis of specific language impairment: evidence from a twin study.
Developmental medicine and child neurology - 1 Jan 1995
Bishop D V, North T, Donlan C
Abstract excerpt
Concordance rates were compared for 63 monozygotic (MZ) and 27 dizygotic (DZ) same-sex twin pairs, aged seven years and over, selected because at least one twin met diagnostic criteria for specific speech or language impairment. There was significant heritability for developmental speech and language disorder, defined according to DSM-II-R criteria. When the definition of the phenotype was broadened to include...
Topics
- Adolescent
- Adult
- Case-Control Studies
- Child
- Diseases in Twins
- Female
- Humans
- Language Development Disorders
- Male
- Phenotype
- Prevalence
- Speech Disorders