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Covert contrast and covert error in persistent velar fronting

Cleland, Joanne and Scobbie, James M. and Heyde, Cornelia and Roxburgh, Zoe and Wrench, Alan A. (2016) Covert contrast and covert error in persistent velar fronting. Clinical linguistics & phonetics. pp. 1-21. ISSN 0269-9206

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    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.

    Author(s):Cleland, Joanne ORCID: https://orcid.org/0000-0002-0660-1646, Scobbie, James M., Heyde, Cornelia, Roxburgh, Zoe and Wrench, Alan A.
    Item type:Article
    ID code:56832
    Notes:This is an Accepted Manuscript of an article published by Taylor & Francis in Clinical Linguistics & Phonetics on 09/09/2016, available online: http://www.tandfonline.com/10.1080/02699206.2016.1209788.
    Keywords:covert contrast , velar fronting, covert Error, ultrasound, speech sound disorders, Therapeutics. Pharmacology, Speech and Hearing, Language and Linguistics
    Subjects:Medicine > Therapeutics. Pharmacology
    Department:Faculty of Humanities and Social Sciences (HaSS) > School of Psychological Science and Health > Speech and Language Therapy
    Depositing user: Pure Administrator
    Date deposited:05 Jul 2016 11:21
    Last modified:21 Jun 2019 03:06
    URI:https://strathprints.strath.ac.uk/id/eprint/56832
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