Sequencing Lexical Tone in Children With Childhood Apraxia of Speech: Preliminary Results
Refereed conference paper presented and published in conference proceedings


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AbstractPreliminary data suggested difficulties of sequencing lexical tones in children with CAS but not in children with speech delay (Wong, Lee, & Tong, 2019). The potential of using tone sequencing as an objective measurement for CAS has been discussed. This study compared the performances of sequencing tones in children with and without CAS to examine whether the task can reflect the underlying deficits of motor speech control in children with CAS. A total of 13 children were included in the study. Four children with CAS, three age and gender-matched children with non-CAS speech and language impairment (SLI), three age and gender-matched children with language impairment only (LI), and three age and gender-matched children with typical development (TD) were recruited. Three early acquired tones, high-level, high-rising, and low-level tones were used in the tone sequencing task (TST). The participants were asked to repeat 1) the three tones in isolation, 2) two of the three tones alternatively, and 3) the three tones in a sequence. All the tasks were carried in meaningful and nonsense context with both V and CV syllables. Perceptual analyses were used. The results showed that non-word stimuli and V stimuli could differentiate CAS from TD in terms of accuracy and consistency. This suggests that TST may be used as a clinical tool to assist the diagnoses of CAS, probably in children with extremely limited verbal production. The results were consistent with the previous pilot study, in which children with CAS have difficulties with pitch variation and have tone production errors (Wong, Lee, & Tong, 2019).
All Author(s) ListWong E. C. H., Lee K. Y. S., Tong M. C. F.
Name of ConferenceMotor Speech Conference 2020
Start Date of Conference20/02/2020
End Date of Conference23/02/2020
Place of ConferenceSanta Barbara
Country/Region of ConferenceUnited States of America
Proceedings TitleMotor Speech Conference 2020
Year2020
Month2
LanguagesEnglish-United States
Keywordsspeech therapy, Childhood Apraxia, Lexical Tone

Last updated on 2021-14-01 at 12:07