Testing the Hyperarticulation and Prosodic Hypotheses of Child-Directed Speech: Insights From the Perceptual and Acoustic Characteristics of Child-Directed Cantonese Tones.
Purpose: The function of child-directed speech has been debated for decades. This study examined the perceptual and acoustic characteristics of child- and adult-directed Cantonese tones to test the hyperarticulation and prosodic hypotheses that have been proposed to account for the acoustic modifica...
| Publicado en: | Journal of Speech, Language & Hearing Research Vol. 61; no. 8; pp. 1907 - 1926 |
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| Autores principales: | , |
| Formato: | Artículo |
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American Speech-Language-Hearing Association
Aug2018
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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=131143792&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 131143792 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: Aug2018 vid: 61 iid: 8 pid: 42 pub: American Speech-Language-Hearing Association artinfo: ui: 131143792 10.1044/2018_JSLHR-S-17-0375 ppf: 1907 ppct: 19 formats: fmt: @attributes: type: P size: 1.1MB tig: atl: Testing the Hyperarticulation and Prosodic Hypotheses of Child-Directed Speech: Insights From the Perceptual and Acoustic Characteristics of Child-Directed Cantonese Tones. aug: au: Puisan Wong Wing Sum Ng, Kelly affil: Faculty of Education, Division of Speech and Hearing Sciences, The University of Hong Kong, Pokfulam su: Hong Kong (China) Analysis of variance Mothers Intonation (Phonetics) Reliability (Personality trait) Speech Experimental design Musical perception Questionnaires Research funding Sound Statistics Data analysis Prompts (Psychology) Repeated measures design sug: subj: Analysis of variance Mothers Intonation (Phonetics) Reliability (Personality trait) Speech Hong Kong (China) Experimental design Musical perception Questionnaires Research funding Sound Statistics Data analysis Prompts (Psychology) Repeated measures design ab: Purpose: The function of child-directed speech has been debated for decades. This study examined the perceptual and acoustic characteristics of child- and adult-directed Cantonese tones to test the hyperarticulation and prosodic hypotheses that have been proposed to account for the acoustic modifications in child-directed speech. Method: Sixty-two mother-child dyads participated in the study. The mothers verbally labeled 30 pictures in monosyllabic isolated words and in the final position of a carrier sentence to the experimenter and their 1- to 5-year-old children. The 8,634 adult- and child-directed productions were low-pass filtered to eliminate lexical information and presented to 5 judges for tone identification. Acoustic analysis was performed on the productions. Results: Acoustically, child-directed tones were produced with an elevated pitch, and the pitch level decreased as the child's age increased. Acoustic contrasts between phonetically similar and more confusing tones were not enhanced in child-directed speech, and unexpectedly, child-directed tones were identified with a lower accuracy than adult-directed tones. The perceptual errors of child-directed tones mirrored the errors found in identifying tones excised from sentence-final position, which had a pitch-lowering effect on the tones. The lower perceptual accuracy, the lack of enhanced acoustic contrasts in confusing tone pairs, and the similarities in the error patterns in identifying tones in child-directed speech and tones in utterance-final position suggest that the acoustic modifications in child-directed tones are prosodic effects serving pragmatic purposes. Conclusion: The findings reject the hyperarticulation hypothesis and support the prosodic hypothesis of child-directed speech. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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