Audiovisual Speech Perception in Children With Developmental Language Disorder in Degraded Listening Conditions.
Purpose: The effect of the signal-to-noise ratio (SNR) on the perception of audiovisual speech in children with and without developmental language disorder (DLD)was investigated by varying the noise level and the sound intensity of acoustic speech. The main hypotheses were that the McGurk effect (in...
| Published in: | Journal of Speech, Language & Hearing Research Vol. 56; no. 1; pp. 211 - 222 |
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| Main Authors: | , , , , , |
| Format: | Article |
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American Speech-Language-Hearing Association
Feb2013
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| Subjects: | |
| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=85822543&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 85822543 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 10924388 1SM jtl: Journal of Speech, Language & Hearing Research issn: 10924388 maglogo: N pubinfo: dt: Feb2013 vid: 56 iid: 1 pid: 42 pub: American Speech-Language-Hearing Association artinfo: ui: 85822543 10.1044/1092-4388(2012/11-0270) ppf: 211 ppct: 11 formats: fmt: @attributes: type: P size: 310KB tig: atl: Audiovisual Speech Perception in Children With Developmental Language Disorder in Degraded Listening Conditions. aug: au: Meronen, Auli Tiippana, Kaisa Westerholm, Jari Ahonen, Timo Oetting, Janna Joanisse, Marc affil: Niilo Mäki Institute, University of Jyväskylä, Finland Institute of Behavioural Sciences (Psychology), University of Helsinki, Finland University of Jyväskylä, Finland su: Analysis of variance Developmental disabilities Psychological tests Audiovisual materials Experimental design Language disorders in children Neuropsychological tests Noise Probability theory Statistical sampling Sound Physiological aspects of speech Speech perception in children Statistics Data analysis Repeated measures design Descriptive statistics sug: subj: Analysis of variance Developmental disabilities Psychological tests Marketing Research and Public Opinion Polling Audiovisual materials Experimental design Language disorders in children Neuropsychological tests Noise Probability theory Statistical sampling Sound Physiological aspects of speech Speech perception in children Statistics Data analysis Repeated measures design Descriptive statistics keyword: audiovisual speech perception developmental language disorders McGurk effect specific language impairment speech perception audiovisual speech perception developmental language disorders McGurk effect specific language impairment speech perception ab: Purpose: The effect of the signal-to-noise ratio (SNR) on the perception of audiovisual speech in children with and without developmental language disorder (DLD)was investigated by varying the noise level and the sound intensity of acoustic speech. The main hypotheses were that the McGurk effect (in which incongruent visual speech alters the auditory speech percept) would be weaker for children with DLD than for controls and that it would get stronger with decreasing SNR in both groups. Method: The participants were 8-year-old children with DLD and a sample of children with normal language development. In the McGurk stimuli, the consonant uttered by the voice differed from that articulated by the face. Three sound intensities (24, 36, and 48 dB) and noise levels (-12, 0, and +6 dB) were used. Perception of unisensory visual speech was also measured. Results: The children with DLD experienced a weak McGurk effect, that is, a weak influence of visual speech on audiovisual speech perception, which remained rather constant across SNR levels. The children with DLD were inaccurate at lipreading. Conclusions: Children with DLD have problems in perceiving spoken consonants presented audiovisually and visually. The weaker McGurk effect could be accounted for by the poorer lipreading ability of children with DLD. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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