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Word Processing in Children with Autism Spectrum Disorders: Evidence from Event-Related Potentials

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Title: Word Processing in Children with Autism Spectrum Disorders: Evidence from Event-Related Potentials
Language: English
Authors: Sandbank, Michael, Yoder, Paul, Key, Alexandra P.
Source: Journal of Speech, Language, and Hearing Research. Dec 2017 60(12):3441-3455.
Availability: American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: slhr@asha.org; Web site: http://jslhr.pubs.asha.org
Peer Reviewed: Y
Page Count: 15
Publication Date: 2017
Sponsoring Agency: National Institute on Deafness and Other Communication Disorders (NIDCD)
National Institutes of Health (DHHS)
Office of Special Education Programs (ED/OSERS)
Contract Number: R01DC006893
U54HD083211
H325D100034A
Document Type: Journal Articles
Reports - Research
Descriptors: Language Processing, Autism, Pervasive Developmental Disorders, Brain Hemisphere Functions, Diagnostic Tests, Language Acquisition, Correlation, Receptive Language, Oral Language, Probability, Clinical Diagnosis, Vocabulary Skills, Language Skills, Measures (Individuals), Construct Validity, Word Recognition
Assessment and Survey Identifiers: MacArthur Communicative Development Inventory
DOI: 10.1044/2017_JSLHR-S-17-0011
ISSN: 1092-4388
Abstract: Purpose: This investigation was conducted to determine whether young children with autism spectrum disorders exhibited a canonical neural response to word stimuli and whether putative event-related potential (ERP) measures of word processing were correlated with a concurrent measure of receptive language. Additional exploratory analyses were used to examine whether the magnitude of the association between ERP measures of word processing and receptive language varied as a function of the number of word stimuli the participants reportedly understood. Method: Auditory ERPs were recorded in response to spoken words and nonwords presented with equal probability in 34 children aged 2-5 years with a diagnosis of autism spectrum disorder who were in the early stages of language acquisition. Average amplitudes and amplitude differences between word and nonword stimuli within 200-500 ms were examined at left temporal (T3) and parietal (P3) electrode clusters. Receptive vocabulary size and the number of experimental stimuli understood were concurrently measured using the MacArthur-Bates Communicative Development Inventories. Results: Across the entire participant group, word-nonword amplitude differences were diminished. The average word-nonword amplitude difference at T3 was related to receptive vocabulary only if 5 or more word stimuli were understood. Conclusions: If ERPs are to ever have clinical utility, their construct validity must be established by investigations that confirm their associations with predictably related constructs. These results contribute to accruing evidence, suggesting that a valid measure of auditory word processing can be derived from the left temporal response to words and nonwords. In addition, this measure can be useful even for participants who do not reportedly understand all of the words presented as experimental stimuli, though it will be important for researchers to track familiarity with word stimuli in future investigations.
Abstractor: As Provided
Entry Date: 2018
Accession Number: EJ1166446
Database: ERIC
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  Data: Word Processing in Children with Autism Spectrum Disorders: Evidence from Event-Related Potentials
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  Data: <searchLink fieldCode="SO" term="%22Journal+of+Speech%2C+Language%2C+and+Hearing+Research%22"><i>Journal of Speech, Language, and Hearing Research</i></searchLink>. Dec 2017 60(12):3441-3455.
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  Data: American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: slhr@asha.org; Web site: http://jslhr.pubs.asha.org
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  Data: National Institute on Deafness and Other Communication Disorders (NIDCD)<br />National Institutes of Health (DHHS)<br />Office of Special Education Programs (ED/OSERS)
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  Data: 10.1044/2017_JSLHR-S-17-0011
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  Data: Purpose: This investigation was conducted to determine whether young children with autism spectrum disorders exhibited a canonical neural response to word stimuli and whether putative event-related potential (ERP) measures of word processing were correlated with a concurrent measure of receptive language. Additional exploratory analyses were used to examine whether the magnitude of the association between ERP measures of word processing and receptive language varied as a function of the number of word stimuli the participants reportedly understood. Method: Auditory ERPs were recorded in response to spoken words and nonwords presented with equal probability in 34 children aged 2-5 years with a diagnosis of autism spectrum disorder who were in the early stages of language acquisition. Average amplitudes and amplitude differences between word and nonword stimuli within 200-500 ms were examined at left temporal (T3) and parietal (P3) electrode clusters. Receptive vocabulary size and the number of experimental stimuli understood were concurrently measured using the MacArthur-Bates Communicative Development Inventories. Results: Across the entire participant group, word-nonword amplitude differences were diminished. The average word-nonword amplitude difference at T3 was related to receptive vocabulary only if 5 or more word stimuli were understood. Conclusions: If ERPs are to ever have clinical utility, their construct validity must be established by investigations that confirm their associations with predictably related constructs. These results contribute to accruing evidence, suggesting that a valid measure of auditory word processing can be derived from the left temporal response to words and nonwords. In addition, this measure can be useful even for participants who do not reportedly understand all of the words presented as experimental stimuli, though it will be important for researchers to track familiarity with word stimuli in future investigations.
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        Value: 10.1044/2017_JSLHR-S-17-0011
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      – Text: English
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        StartPage: 3441
    Subjects:
      – SubjectFull: Language Processing
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      – SubjectFull: Autism
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      – SubjectFull: Pervasive Developmental Disorders
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      – SubjectFull: Oral Language
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      – SubjectFull: Probability
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      – SubjectFull: Clinical Diagnosis
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      – TitleFull: Word Processing in Children with Autism Spectrum Disorders: Evidence from Event-Related Potentials
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