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The expressive portion of the NSST compared to a spontaneous language sample.

C A Prutting, T M Gallagher, A Mulac

    The Journal of Speech and Hearing Disorders
    |February 1, 1975
    PubMed
    Summary
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    The Northwestern Syntax Screening Test (NSST) may overestimate language delays in children. Many syntactic structures missed on the NSST are produced correctly in spontaneous speech samples.

    Area of Science:

    • Child language development
    • Clinical linguistics
    • Speech-language pathology

    Background:

    • Children diagnosed with language delays often exhibit difficulties with syntactic structures.
    • Assessing expressive language in young children requires reliable and valid instruments.
    • The Northwestern Syntax Screening Test (NSST) is a tool used to evaluate syntactic development.

    Purpose of the Study:

    • To examine the relationship between syntactic structures assessed by the NSST and those used in spontaneous language.
    • To determine if the NSST accurately reflects a child's overall language performance.
    • To evaluate the effectiveness of the NSST as a diagnostic tool for language delay.

    Main Methods:

    • Administered the NSST to 12 children diagnosed with language delay (ages 4 years 1 month to 5 years 11 months).

    Related Experiment Videos

  • Collected spontaneous language samples from the same children via a speech clinician and their mothers.
  • Analyzed and compared syntactic structures produced on the NSST with those in the spontaneous samples.

    • Main Results:

    • Thirty percent of syntactic structures incorrectly produced on the NSST were correctly produced in spontaneous language samples.
    • Language samples collected by clinicians contained a significantly greater number of correctly produced syntactic structures than those collected by mothers.
    • The NSST's item analysis did not accurately represent the children's spontaneous language abilities.

    Conclusions:

    • The expressive portion of the NSST may not provide a comprehensive or accurate measure of a child's syntactic performance.
    • Relying solely on the NSST for language assessment might lead to misinterpretations of a child's true language capabilities.
    • The NSST should be primarily considered a screening instrument, with results supplemented by spontaneous language analysis for accurate diagnosis.