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    Predicting language outcomes for children learning AAC: Child and environmental factors

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    Issue Date
    2013-06-19
    Author
    Brady, Nancy C.
    Thiemann-Bourque, Kathy S.
    Fleming, Kandace
    Matthews, Kris
    Publisher
    American Speech-Language-Hearing Association
    Type
    Article
    Article Version
    Scholarly/refereed, author accepted manuscript
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    Abstract
    Purpose

    To investigate a model of language development for nonverbal preschool age children learning to communicate with AAC.

    Method

    Ninety-three preschool children with intellectual disabilities were assessed at Time 1, and 82 of these children were assessed one year later at Time 2. The outcome variable was the number of different words the children produced (with speech, sign or SGD). Children’s intrinsic predictor for language was modeled as a latent variable consisting of cognitive development, comprehension, play, and nonverbal communication complexity. Adult input at school and home, and amount of AAC instruction were proposed mediators of vocabulary acquisition.

    Results

    A confirmatory factor analysis revealed that measures converged as a coherent construct and an SEM model indicated that the intrinsic child predictor construct predicted different words children produced. The amount of input received at home but not at school was a significant mediator.

    Conclusions

    Our hypothesized model accurately reflected a latent construct of Intrinsic Symbolic Factor (ISF). Children who evidenced higher initial levels of ISF and more adult input at home produced more words one year later. Findings support the need to assess multiple child variables, and suggest interventions directed to the indicators of ISF and input.
    URI
    http://hdl.handle.net/1808/23611
    DOI
    https://doi.org/10.1044/1092-4388(2013/12-0102)
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    • Speech-Language-Hearing Scholarly Works [75]
    Citation
    Brady, Nancy C. et al. “Predicting Language Outcomes for Children Learning AAC: Child and Environmental Factors.” Journal of speech, language, and hearing research : JSLHR 56.5 (2013): 1595–1612.

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    785-864-8983

    KU Libraries
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    Lawrence, KS 66045
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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