High heritability of speech and language impairments in 6-year-old twins demonstrated using parent and teacher report

Behavior Genetics (2006) - Comment
pubmed: 16485179 doi: 10.1007/s10519-005-9020-0 issn: 0001-8244 issn: 1573-3297

Dorothy V. M. Bishop, Glynis Laws, Caroline Adams, Courtenay Frazier Norbury