ERIC Number: EJ1099014
Record Type: Journal
Publication Date: 2016-May
Abstractor: As Provided
Consonant Differentiation Mediates the Discrepancy between Non-verbal and Verbal Abilities in Children with ASD
Key, A. P.; Yoder, P. J.; Stone, W. L.
Journal of Intellectual Disability Research, v60 n5 p478-490 May 2016
Background: Many children with autism spectrum disorder (ASD) demonstrate verbal communication disorders reflected in lower verbal than non-verbal abilities. The present study examined the extent to which this discrepancy is associated with atypical speech sound differentiation. Methods: Differences in the amplitude of auditory event-related potentials elicited by contrasting consonant-vowel syllables during a passive listening paradigm were used to assess speech sound differentiation in 24 children with ASD and 18 chronological age-matched children with typical development (TD), M age 6.90 years (SD = 1.39). Results: Results revealed that compared with TD peers, children with ASD showed reduced consonant differentiation in the 84- to 308-ms period. Brain responses indexing consonant differentiation were negatively related to the degree of discrepancy in non-verbal and verbal abilities and mediated the relationship between diagnostic group membership and the greater discrepancy. Conclusions: We discuss the theoretical and clinical implications of the brain's response to speech sound contrasts possibly explaining the greater non-verbal versus language ability in children with ASD compared with that in typically developing children.
Descriptors: Children, Autism, Pervasive Developmental Disorders, Phonemes, Nonverbal Ability, Verbal Ability, Auditory Discrimination, Brain, Speech, Comparative Analysis
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Sponsor: Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) (NIH)
Authoring Institution: N/A
Grant or Contract Numbers: P30HD15052