Projects per year
Abstract
Acoustic and articulatory studies demonstrate covert contrast in perceptually neutralised phonemic contrasts in both typical children and children with speech disorders. These covert contrasts are thought to be relatively common and symptomatic of phonetic speech disorders. However, clinicians in the speech therapy clinic have had no easy way of identifying this covertness. This study uses ultrasound tongue imaging to compare tongue contours for /t/ and /k/ in seven children with persistent velar fronting. We present a method of overlaying tongue contours to identify covert contrast at the articulatory level. Results show that all seven children, contrary to expectations, produced both /t/ and /k/ with near-identical tongue shapes showing no evidence of covert contrast. However, further analysis of one of the participants showed highly variable tongue shapes for /t/ and /k/, including retroflex productions of both. Although not phonologically conditioned, this covert error is evidence of speech disorder at the phonetic level.
Original language | English |
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Pages (from-to) | 1-21 |
Number of pages | 21 |
Journal | Clinical Linguistics & Phonetics |
Early online date | 9 Sept 2016 |
DOIs | |
Publication status | E-pub ahead of print - 9 Sept 2016 |
Keywords
- covert contrast
- velar fronting
- covert Error
- ultrasound
- speech sound disorders
Fingerprint
Dive into the research topics of 'Covert contrast and covert error in persistent velar fronting'. Together they form a unique fingerprint.Profiles
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Joanne Cleland, BSc(Hons) PhD MRCSLT
- Speech And Language Therapy - Professor
- Health and Wellbeing
Person: Academic
Projects
- 1 Finished
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Ultrasound Visual Biofeedback Treatment for Speech Sound Disorders in Children
Cleland, J. (Principal Investigator)
1/05/15 → 30/11/16
Project: Research
Research output
- 20 Citations
- 1 Paper
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UltraSuite: a repository of ultrasound and acoustic data from child speech therapy sessions
Eshky, A., Ribeiro, M. S., Cleland, J., Richmond, K., Roxburgh, Z., Scobbie, J. & Wrench, A., 2 Sept 2018. 6 p.Research output: Contribution to conference › Paper › peer-review
Open AccessFile
Activities
- 1 Key-note speaker and plenary lectures at conferences
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5th International Winter School: Speech Perception and Production
Cleland, J. (Keynote/plenary speaker)
10 Jan 2017Activity: Participating in or organising an event types › Key-note speaker and plenary lectures at conferences