SFA RESEARCH SUMMER 2019
"
...CHILD LANGUAGE IS HIGHLY INFLUENCED BY PARENTAL INPUT LANGUAGE..."
The team collected language samples during typical adult-child play at three points over three years and modeled productive syntax and vocabulary diversity growth rates for 50 Children who Stutter (CWS), and 24 typically fluent peers . Logistic regression models were then used to determine whether growth rates uniquely predict likelihood of recovery, as well as if these rates were predictive over and above currently identified correlates of stuttering onset and recovery.
The researchers found that different linguistic profiles emerged between children who went on to recover versus those who persisted. Children who had steeper productive syntactic growth, e.g., longer, more complex language over the three years of the study, were more likely to recover. This effect held after controlling for initial language ability at study onset as well as demographic covariates. Despite a published response to the Editor of JSLHR that such results could not be interpreted without knowing the children’s family history or treatment experience, a follow-up (in press) adding these variables to a re-analysis actually strengthened the study findings.
Because child language growth is highly influenced by parental input language,
recommendations to
parents might reconsider advice that parents shorten and simplify language models to children who stutter. The need for additional research on language in early stuttering and recovery is suggested, especially if unconventional therapy components,
such as
language enrichment, have the potential to improve recovery rates in children who stutter.
References
Leech, K. A., Bernstein Ratner, N., Brown, B., & Weber, C. M. (2017). Preliminary evidence that growth in productive language differentiates childhood stuttering persistence and recovery. Journal of Speech, Language, and Hearing Research, 60(11), 3097-3109.
Leech, K.A., Bernstein Ratner, N., Brown, B. & Weber, C. M. (2019, in press) Language growth predicts stuttering persistence over and above family history and treatment experience: Response to Bothe, JSLHR-S-18-0318, in press
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