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Speech Development between 30 and 119 Months in Typical Children II: Articulation Rate Growth Curves
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- Author(s): Mahr, Tristan J. (ORCID
Mahr, Tristan J. (ORCID 0000-0002-8890-5116 ); Soriano, Jennifer U. (ORCIDSoriano, Jennifer U. (ORCID 0000-0001-5934-5896 ); Rathouz, Paul J. (ORCIDRathouz, Paul J. (ORCID 0000-0001-8380-4300 ); Hustad, Katherine C. (ORCIDHustad, Katherine C. (ORCID 0000-0002-8544-7754 )- Language:
English- Source:
Journal of Speech, Language, and Hearing Research. Nov 2021 64(11):4057-4070.- Publication Date:
2021- Document Type:
Journal Articles
Reports - Research - Language:
- Additional Information
- Availability: American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: [email protected]; Web site: http://jslhr.pubs.asha.org
- Peer Reviewed: Y
- Source: 14
- Sponsoring Agency: National Institute on Deafness and Other Communication Disorders (NIDCD) (DHHS/NIH)
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) (DHHS/NIH) - Contract Number: R01DC015653
U54HD090256 - Subject Terms: Speech Communication; Articulation (Speech); Child Development; Language Acquisition; Age Differences; Case Studies; Auditory Tests; Screening Tests; Syllables; Benchmarking; Preschool Children; Measures (Individuals); Children; Developmental Stages; Speech Impairments; Clinical Diagnosis; Speech Evaluation
- Accession Number: 10.1044/2021_JSLHR-21-00206
- ISSN: 1092-4388
- 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.
- Abstract: As Provided
- Publication Date: 2022
- Accession Number: EJ1320704
- Availability:
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