Speech Development between 30 and 119 Months in Typical Children II: Articulation Rate Growth Curves

Autor/inn/en	Mahr, Tristan J.; Soriano, Jennifer U.; Rathouz, Paul J.; Hustad, Katherine C.
Titel	Speech Development between 30 and 119 Months in Typical Children II: Articulation Rate Growth Curves
Quelle	In: Journal of Speech, Language, and Hearing Research, 64 (2021) 11, S.4057-4070 (14 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Mahr, Tristan J.) ORCID (Soriano, Jennifer U.) ORCID (Rathouz, Paul J.) ORCID (Hustad, Katherine C.)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
Schlagwörter	Speech Communication; Articulation (Speech); Child Development; Language Acquisition; Age Differences; Case Studies; Auditory Tests; Screening Tests; Syllables; Benchmarking; Preschool Children; Measures (Individuals); Developmental Stages; Speech Impairments; Clinical Diagnosis; Speech Evaluation + Suchen Sie Ihr Suchwort? Kindesentwicklung; Sprachaneignung; Spracherwerb; Age; Difference; Age difference; Altersunterschied; Case study; Fallstudie; Case Study; Auditory test; Autismus; Screening-Verfahren; Silbe; Pre-school age; Preschool age; Child; Children; Pre-school education; Preschool education; Vorschulalter; Kind; Kinder; Vorschulkind; Vorschulkinder; Vorschulerziehung; Vorschule; Messdaten; Speech impairment; Speech handicap; Speech handicaps; Language handicps; Language impairments; Sprachbehinderung
Abstract	Purpose: We aimed to develop normative growth curves for articulation rate during sentence repetition for typically developing children. Our primary goal was the development of quantile/percentile growth curves so that typical variation in articulation rate with age could be estimated. We also estimated when children became adultlike in their articulation rate, and we examined the contributions of age and utterance length to articulation rate. Method: This cross-sectional study involved collection of in-person speech samples from 570 typically developing children (297 girls; 273 boys) who passed speech, language, and hearing screening measures. Pauses greater than 150 ms in duration were removed from the samples, and articulation rate was measured in syllables per second (sps). Results: Articulation rate reliably increased with age and utterance length. Rate in all key percentiles increased with age. The median rate (50th percentile) increased from 2.7 sps at 36 months to 3.3 sps at 96 months. The 5th percentile increased from 2.3 to 3.1 sps over the same age range. Using 3.2 sps as a benchmark for adultlike speech, we found the 25th, 50th, and 75th percentiles reached adultlike rates at 99, 75, and 53 months, respectively. Conclusions: Articulation rate increases from early childhood into middle childhood, and it is generally adultlike by 10 years of age. Variability in articulation rate among typical children was substantial. Implications for prior research and for clinical usage are discussed. (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