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Language Growth in Children with Heterogeneous Language Disorders: A Population Study
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Norbury, Courtenay Frazier; Vamvakas, George; Gooch, Debbie; Baird, Gillian; Charman, Tony; Simonoff, Emily; Pickles, Andrew – Journal of Child Psychology and Psychiatry, 2017
Background: Language development has been characterised by significant individual stability from school entry. However, the extent to which trajectories of language growth vary in children with language disorder as a function of co-occurring developmental challenges is a question of theoretical import, with implications for service provision.…
Descriptors: Language Acquisition, Language Skills, Language Impairments, Developmental Disabilities
The Impact of Nonverbal Ability on Prevalence and Clinical Presentation of Language Disorder: Evidence from a Population Study
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Norbury, Courtenay Frazier; Gooch, Debbie; Wray, Charlotte; Baird, Gillian; Charman, Tony; Simonoff, Emily; Vamvakas, George; Pickles, Andrew – Journal of Child Psychology and Psychiatry, 2016
Background: Diagnosis of "specific" language impairment traditionally required nonverbal IQ to be within normal limits, often resulting in restricted access to clinical services for children with lower NVIQ. Changes to DSM-5 criteria for language disorder removed this NVIQ requirement. This study sought to delineate the impact of varying…
Descriptors: Nonverbal Ability, Language Impairments, Incidence, Evaluation Criteria