J Barry|Ifat Yasin|Dorothy V. M. Bishop
Heritable risk factors associated with language impairments
University of Oxford|University of Oxford|University of Oxford
strong genetic contribution childrens language literacy impairments aim study determine aspects phenotype familial comparing 34 parents probands languageliteracy impairments 33 parents typically developing probands parents responded questionnaires regarding previous history languagereading impairment participated psychometric testing psychometric test battery consisted tests assessing nonverbal iq shortterm memory articulation receptive grammar reading abilities spelling selfreport measures demonstrated higher prevalence language literacy impairments parents affected probands 32 compared parents unaffected probands 6 two groups parents differed significantly performance nonword repetition oromotor digit span tasks nonword repetition gave best discrimination parent groups even data parents actually impaired ascertained direct testing selfreport removed analyses suggests nonword repetition serves marker family risk language impairment paper concludes discussion issues associated ascertainment specific language impairment sli