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Visual discrimination of vowel duration.
Linköping University, Department of Behavioural Sciences and Learning. Linköping University, Faculty of Arts and Sciences.
2009 (English)In: Scandinavian journal of psychology, ISSN 1467-9450, Vol. 50, no 5, 427-435 p.Article in journal (Refereed) Published
Abstract [en]

Discrimination of vowel duration was explored with regard to discrimination threshold, error bias, and effects of modality and consonant context. A total of 122 normal-hearing participants were presented with disyllabic-like items such as /lal-lal/ or /mam-mam/ in which the lengths of the vowels were systematically varied and were asked to judge whether the first or second vowel was longer. Presentation was either visual, auditory, or audiovisual. Vowel duration differences varied in 24 steps: 12 with a longer first /a/ and 12 with a longer last /a/ (range: +/-33-400 ms). RESULTS: 50% JNDs were smaller than the lowest tested step size (33 ms); 75% JNDs were in the 33-66 ms range for all conditions but V /lal/, with a 75% JND at 66-100 ms. Errors were greatest for visual presentation and for /lal-lal/ tokens. There was an error bias towards reporting the first vowel as longer, and this was strongest for /mam-mam/ and when both vowels were short, possibly reflecting a sublinguistic processing strategy.

Place, publisher, year, edition, pages
2009. Vol. 50, no 5, 427-435 p.
Keyword [en]
Vowel duration • discrimination • perception • accuracy • bias
National Category
Social Sciences
Identifiers
URN: urn:nbn:se:liu:diva-21332DOI: 10.1111/j.1467-9450.2009.00746.xPubMedID: 19778390OAI: oai:DiVA.org:liu-21332DiVA: diva2:241075
Available from: 2009-10-01 Created: 2009-10-01 Last updated: 2009-10-01

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Lidestam, Björn

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf