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Consonant differentiation mediates the discrepancy between non-verbal and verbal abilities in children with ASD.

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Title: Consonant differentiation mediates the discrepancy between non-verbal and verbal abilities in children with ASD.
Authors: Key, A. P., Yoder, P. J., Stone, W. L.
Source: Journal of Intellectual Disability Research. May2016, Vol. 60 Issue 5, p478-490. 13p.
Subjects: Analysis of variance, Autism, Communication, Confidence intervals, Consonants, Electroencephalography, Evoked potentials (Electrophysiology), Factor analysis, Nonverbal communication, Phonetics, Probability theory, Research funding, Speech perception, Statistics, T-test (Statistics), Data analysis, Wave analysis, Repeated measures design, Descriptive statistics, Disease complications, Children
Abstract: 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. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Intellectual Disability Research is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Consonant differentiation mediates the discrepancy between non-verbal and verbal abilities in children with ASD.
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  Data: 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. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Intellectual Disability Research is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1111/jir.12286
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        Text: English
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        PageCount: 13
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      – SubjectFull: Analysis of variance
        Type: general
      – SubjectFull: Autism
        Type: general
      – SubjectFull: Communication
        Type: general
      – SubjectFull: Confidence intervals
        Type: general
      – SubjectFull: Consonants
        Type: general
      – SubjectFull: Electroencephalography
        Type: general
      – SubjectFull: Evoked potentials (Electrophysiology)
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      – SubjectFull: Nonverbal communication
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      – SubjectFull: Phonetics
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      – SubjectFull: Probability theory
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      – SubjectFull: Research funding
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      – SubjectFull: Speech perception
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      – SubjectFull: Statistics
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      – SubjectFull: T-test (Statistics)
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      – SubjectFull: Wave analysis
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      – SubjectFull: Disease complications
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      – SubjectFull: Children
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      – TitleFull: Consonant differentiation mediates the discrepancy between non-verbal and verbal abilities in children with ASD.
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              Text: May2016
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