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Voice onset time in Swedish children with phonological impairment
Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences. Karolinska Institute, Sweden.ORCID iD: 0000-0003-2208-0630
2015 (English)In: Logopedics, Phoniatrics, Vocology, ISSN 1401-5439, E-ISSN 1651-2022, Vol. 40, no 4, 149-155 p.Article in journal (Refereed) Published
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Abstract [en]

Mastering spatial and temporal co-ordination in speech production is a challenge for children. Voice onset time (VOT) reflects timing in speech. The objective was to study VOT in Swedish children with a diagnosed phonological impairment and compare results with normative data. Thus 38 children, aged 4-11 years, in three age-groups were audio-recorded when producing minimal pairs with the plosives /p b t d k g/. Waveforms and spectrograms were analysed. Results show that children with phonological impairment produced plosives with deviant VOT values and greater variability compared to normative data. No developmental trend was seen with increasing age. Also, no relationship was found between VOT values and degree of impairment measured by percentage phonemes correct. Furthermore no relation was found between number of errors on auditory discrimination of nine minimal pairs with the different plosives and number of deviant VOT. Findings were interpreted as displaying motor co-ordination difficulties.

Place, publisher, year, edition, pages
TAYLOR & FRANCIS LTD , 2015. Vol. 40, no 4, 149-155 p.
Keyword [en]
Child; speech sound disorders; voice onset time
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Clinical Medicine
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URN: urn:nbn:se:liu:diva-125843DOI: 10.3109/14015439.2014.934276ISI: 000369891000001PubMedID: 24992946OAI: oai:DiVA.org:liu-125843DiVA: diva2:910149
Available from: 2016-03-08 Created: 2016-03-04 Last updated: 2017-11-30

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Lundeborg Hammarström, IngerNordin, ElinZeipel-Stjerna, MarieMcallister, Anita
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