Developmental Changes in the Effects of Utterance Length and Complexity on Speech Movement Variability.
Purpose: The authors examined the effects of utterance length and linguistic complexity on speech movement consistency for 210 participants between the ages of 5 and 22 years. Variability and durational analyses were conducted to (a) determine a more complete picture of the developmental course of e...
| Publicado en: | Journal of Speech, Language & Hearing Research Vol. 51; no. 5; pp. 1138 - 1152 |
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| Autores principales: | , |
| Formato: | Artículo |
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American Speech-Language-Hearing Association
October 2008
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=508005069&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 508005069 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: October 2008 vid: 51 iid: 5 pid: 42 pub: American Speech-Language-Hearing Association artinfo: ui: 508005069 10.1044/1092-4388(2008/06-0222) ppf: 1138 ppct: 14 formats: fmt: – @attributes: type: T – @attributes: type: P size: 415KB tig: atl: Developmental Changes in the Effects of Utterance Length and Complexity on Speech Movement Variability. aug: au: Sadagopan, Neeraja Smith, Anne su: Physiological aspects of speech Motor ability Age (Psychology) sug: subj: Physiological aspects of speech Motor ability Age (Psychology) ab: Purpose: The authors examined the effects of utterance length and linguistic complexity on speech movement consistency for 210 participants between the ages of 5 and 22 years. Variability and durational analyses were conducted to (a) determine a more complete picture of the developmental course of earlier observations of the effects of linguistic constructs on speech motor variability and (b) describe trends for duration of the same sequence of words in different sentential contexts across development. Method: Lower-lip movement was recorded during the production of “buy Bobby a puppy” spoken in isolation as well as embedded as a phrase in 2 longer, more complex sentences. Results: Compared with young adults, children demonstrated higher variability in producing repeated movement sequences for the target word sequence across all conditions. Also, for all age groups except young adults, increased processing demands resulted in significantly increased movement trajectory variability. Duration analyses suggest that around age 9 years, children begin to use adult-like pre-speech processes to plan the timing of sentence internal phrases, and maturation of these planning processes continues through late adolescence. Conclusion: These results provide further evidence for language-motor interactions and for a protracted course of speech motor development that continues well into adolescence. Reprinted by permission of the publisher. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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