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Retroflex versus bunched in treatment for rhotic misarticulation: evidence from ultrasound biofeedback intervention.

AbstractPURPOSE:
To document the efficacy of ultrasound biofeedback treatment for misarticulation of the North American English rhotic in children. Because of limited progress in the first cohort, a series of two closely related studies was conducted in place of a single study. The studies differed primarily in the nature of tongue-shape targets (e.g., retroflex, bunched) cued during treatment.
METHOD:
Eight participants received 8 weeks of individual ultrasound biofeedback treatment targeting rhotics. In Study 1, all 4 participants were cued to match a bunched tongue-shape target. In Study 2, participants received individualized cues aimed at eliciting the tongue shape most facilitative of perceptually correct rhotics.
RESULTS:
Participants in Study 1 showed only minimal treatment effects. In Study 2, all participants demonstrated improved production of rhotics in untreated words produced without biofeedback, with large to very large effect sizes.
CONCLUSIONS:
The results of Study 2 indicate that with proper parameters of treatment, ultrasound biofeedback can be a highly effective intervention for children with persistent rhotic errors. In addition, qualitative comparison of Studies 1 and 2 suggests that treatment for the North American English rhotic should include opportunities to explore different tongue shapes, to find the most facilitative variant for each individual speaker.
AuthorsTara McAllister Byun, Elaine R Hitchcock, Michelle T Swartz
JournalJournal of speech, language, and hearing research : JSLHR (J Speech Lang Hear Res) Vol. 57 Issue 6 Pg. 2116-30 (Dec 2014) ISSN: 1558-9102 [Electronic] United States
PMID25088034 (Publication Type: Comparative Study, Journal Article, Research Support, N.I.H., Extramural)
Topics
  • Articulation Disorders (physiopathology, therapy)
  • Biofeedback, Psychology (methods)
  • Child
  • Cues
  • Female
  • Humans
  • Language
  • Male
  • North America
  • Speech Sound Disorder (physiopathology, therapy)
  • Speech Therapy (methods)
  • Tongue
  • Ultrasonography (methods)

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