A Cross-Sectional Age Group Study of Coarticulatory Resistance: The Case of Late-Acquired Voiceless Fricatives in English

Autor/inn/en	Howson, Phil J.; Redford, Melissa A.
Titel	A Cross-Sectional Age Group Study of Coarticulatory Resistance: The Case of Late-Acquired Voiceless Fricatives in English
Quelle	In: Journal of Speech, Language, and Hearing Research, 65 (2022) 9, S.3316-3336 (21 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Redford, Melissa A.)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
Schlagwörter	Case Studies; Articulation (Speech); Speech Communication; Phonemes; Children; Adults; Preschool Children; College Students; Comparative Analysis; Prediction; Phonology; Phrase Structure; Audiovisual Aids; Acoustics; Phonetics; Measurement Techniques; Age Differences; Auditory Perception; Biomechanics; Accuracy; Child Development; Oregon + Suchen Sie Ihr Suchwort? Case study; Fallstudie; Case Study; Fonem; Child; Kind; Kinder; Pre-school age; Preschool age; Children; Pre-school education; Preschool education; Vorschulalter; Vorschulkind; Vorschulkinder; Vorschulerziehung; Vorschule; Collegestudent; Vorhersage; Fonologie; Phrasenstruktur; Audiovisuelles Medium; Akustik; Phonetik; Fonetik; Messtechnik; Age; Difference; Age difference; Altersunterschied; Auditive Wahrnehmung; Akustische Wahrnehmung; Biomechanik; Kindesentwicklung
Abstract	Purpose: As a class, fricatives are more "resistant" to consonant-vowel coarticulation than other English sounds. This study investigates the relative coarticulatory resistance of /[voiceless dental fricative], s, [voiceless palato-alveolar fricative]/ in child and adult speech to better understand the acquisition of individuated speech sounds. Method: Ten 5-year-old children, seven 8-year-old children, and nine college-age adults produced [[schwa]FV] sequences in carrier phrases, where F was /[voiceless dental fricative]/, /s/, or /[voiceless palato-alveolar fricative]/ and V was /ae/, /i/, or /u/. In Experiment 1, coarticulation was perceptually indexed: 65 adults predicted the target stressed vowel based on forward-gated audiovisual speech samples for a subset of four speakers from each age group. In Experiment 2, dynamic spectral measures of the /[schwa]FV/ sequences were analyzed using smoothing spline analysis of variance to again test for vowel effects on fricative articulation across age groups. Results: The perceptual results indicated that fricatives blocked vowel-vowel coarticulation across speaker age groups. Contrary to expectation, vowels were most accurately predicted when F was /s/ and not when it was /[voiceless palato-alveolar fricative]/ or /[voiceless dental fricative]/ across age groups. Acoustic results indicated the expected biomechanically motivated /[voiceless palato-alveolar fricative]/ > /s/ > /[voiceless dental fricative]/ coarticulatory resistance hierarchy in adults' speech. By contrast, /[voiceless palato-alveolar fricative]/ > /s/ were similarly influenced by context in 8-year-olds' speech, and the results from 5-year-olds' speech suggested an influence of order of acquisition in that /[voiceless dental fricative]/ was surprisingly resistant to coarticulation. Conclusion: The study results are taken to suggest that a temporal constraint on fricative articulation interacts with biomechanical constraints during development to influence patterns of coarticulation in school-age children's speech. (As Provided).
Anmerkungen	American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: slhr@asha.org; Web site: http://jslhr.pubs.asha.org
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01