Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/91199
| Title: | Pitch variation in children with childhood apraxia of speech : preliminary findings | Authors: | Wong, ECH Velleman, SL Tong, MCF Lee, KYS |
Issue Date: | Jun-2021 | Source: | American journal of speech - language pathology, June 2021, v. 30, no. 3s, p. 1511-1524 | Abstract: | Introduction: Pitch variation, which refers to one’s ability to vary fundamental frequency (F0) within or between syllables when speaking, has not been investigated in children with childhood apraxia of speech (CAS). However, pitch variation plays an important role in tone languages, as varying F0 patterns communicate different lexical meanings. This study investigated pitch variation abilities in individuals with CAS via the tone-sequencing tasks (TSTs), focusing on task performance and the effects of syllable structure, lexical status, and tones. Method: Three Cantonese-speaking children with CAS (aged 3;7–5;8 [years;months]) and six children without CAS participated in the study. Children without CAS were divided into two control groups, comprising those with speech and/or language impairment or typical development. TSTs consisted of 56 sets of five repetitions of stimuli. The stimuli varied in syllable structure, lexical status, and tones. Percentage of tones correct (PTC), consistency scores, F0 values, and acoustic repetition duration were measured. Results: The CAS group performed more poorly than the control groups on the TST with respect to tone accuracy, consistency, and repetition duration. No interaction effects between group and syllable structure or group and lexical status were found. No significant difference was found on F0 values across time between Tone 1 and Tone 2 syllables in the CAS group. However, interaction effects between group and time points of F0 values on Tone 2 syllables were found. Discussion: The results suggest that children with CAS have difficulty with pitch variation, which was revealed on the TST with respect to tone accuracy, consistency, and repetition duration. Moreover, children with CAS have difficulty in varying F0 values to produce high-rising tones and tend to use high-level tones to substitute. Clinically, the TST may be useful to assist in the diagnosis of CAS. Isolated vowel stimuli may be useful to test young children or children with severe impairment. Future investigations and development of a normed tool for children with CAS are suggested. | Publisher: | American Speech - Language - Hearing Association | Journal: | American journal of speech - language pathology | ISSN: | 1058-0360 | EISSN: | 1558-9110 | DOI: | 10.1044/2021_AJSLP-20-00150 | Rights: | © 2021 The Authors This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 (https://creativecommons.org/licenses/by-nc-nd/4.0/) The following publication Wong Eddy C. H., Velleman Shelley L., Tong Michael C. F., Lee Kathy Y. S., Pitch Variation in Children With Childhood Apraxia of Speech: Preliminary Findings, American Journal of Speech-Language Pathology, 2021, 30(3S), 1511-1524 is available at https://doi.org/10.1044/2021_AJSLP-20-00150 |
| Appears in Collections: | Journal/Magazine Article |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Wong_Pitch_Variation_Children.pdf | 263.26 kB | Adobe PDF | View/Open |
Access
View full-text via PolyU eLinks 
Page views
99
Last Week
2
2
Last month
Citations as of Jun 11, 2023
Downloads
60
Citations as of Jun 11, 2023
SCOPUSTM
Citations
5
Citations as of Jun 8, 2023
WEB OF SCIENCETM
Citations
5
Citations as of Jun 8, 2023
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.