The Acquisition of Articulatory Timing for Liquids: Evidence from Child and Adult Speech

Autor/inn/en	Howson, Phil J.; Redford, Melissa A.
Titel	The Acquisition of Articulatory Timing for Liquids: Evidence from Child and Adult Speech
Quelle	In: Journal of Speech, Language, and Hearing Research, 64 (2021) 3, (20 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
Schlagwörter	Articulation (Speech); Speech Communication; Time Perspective; Children; Preschool Children; College Students; Comparative Analysis; Phonology; Acoustics; Vowels; Prediction; Task Analysis; Language Acquisition; Age Differences; Child Development; Pictorial Stimuli; Measurement Techniques; Human Body + Suchen Sie Ihr Suchwort? Zeitbezug; Child; Kind; Kinder; Pre-school age; Preschool age; Children; Pre-school education; Preschool education; Vorschulalter; Vorschulkind; Vorschulkinder; Vorschulerziehung; Vorschule; Collegestudent; Fonologie; Akustik; Vorhersage; Aufgabenanalyse; Sprachaneignung; Spracherwerb; Age; Difference; Age difference; Altersunterschied; Kindesentwicklung; Fantasieanregung; Messtechnik; Menschlicher Körper
Abstract	Purpose: Liquids are among the last sounds to be acquired by English-speaking children. The current study considers their acquisition from an articulatory timing perspective by investigating anticipatory posturing for /l/ versus /[voiced alveolar approximant]/ in child and adult speech. Method: In Experiment 1, twelve 5-year-old, twelve 8-year-old, and 11 college-aged speakers produced carrier phrases with penultimate stress on monosyllabic words that had /l/, /[voiced alveolar approximant]/, or /d/ (control) as singleton onsets and /ae/ or /u/ as the vowel. Short-domain anticipatory effects were acoustically investigated based on schwa formant values extracted from the preceding determiner (= "the") and dynamic formant values across the /[schwa]#LV/ sequence. In Experiment 2, long-domain effects were perceptually indexed using a previously validated forward-gated audiovisual speech prediction task. Results: Experiment 1 results indicated that all speakers distinguished /l/ from /[voiced alveolar approximant]/ along F3. Adults distinguished /l/ from /[voiced alveolar approximant]/ with a lower F2. Older children produced subtler versions of the adult pattern; their anticipatory posturing was also more influenced by the following vowel. Younger children did not distinguish /l/ from /[voiced alveolar approximant]/ along F2, but both liquids were distinguished from /d/ in the domains investigated. Experiment 2 results indicated that /[voiced alveolar approximant]/ was identified earlier than /l/ in gated adult speech; both liquids were identified equally early in 5-year-olds' speech. Conclusions: The results are interpreted to suggest a pattern of early tongue-body retraction for liquids in /[schwa]#LV/ sequences in children's speech. More generally, it is suggested that children must learn to inhibit the influence of vowels on liquid articulation to achieve an adultlike contrast between /l/ and /[voiced alveolar approximant]/ in running 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