Two-year olds' phonological acquisition: Normative data

McIntosh, Beth and Dodd, Barbara J. (2008) Two-year olds' phonological acquisition: Normative data. International Journal of Speech-Language Pathology, 10 6: 460-469. doi:10.1080/17549500802149683

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Author McIntosh, Beth
Dodd, Barbara J.
Title Two-year olds' phonological acquisition: Normative data
Journal name International Journal of Speech-Language Pathology   Check publisher's open access policy
ISSN 1754-9515
Publication date 2008-01-01
Sub-type Article (original research)
DOI 10.1080/17549500802149683
Open Access Status Not yet assessed
Volume 10
Issue 6
Start page 460
End page 469
Total pages 9
Place of publication Abingdon, England
Publisher Informa Healthcare
Language eng
Subject C1
920107 Hearing, Vision, Speech and Their Disorders
111403 Paediatrics
Abstract The study reported evaluated an assessment of phonology for 2-year-olds to establish normative data and determine if early identification of children with speech difficulties is possible. The study evaluated 62 2-year-old children on the Toddler Phonology Test (TPT). Children produced 32 words, spontaneously or in imitation. Ten of the children were assessed three times, on the third occasion, when they had reached 3 years, on another phonological assessment. The data indicated that older children performed better than younger children on quantitative measures. Girls and boys performed equally well. Their phonetic repertoires were missing some fricatives and all affricates, as well as /r/. Consistently used error patterns identified included cluster reduction, final consonant deletion, stopping, fronting, weak syllable, deletion, gliding and deaffrication. Correlation analyses indicated that performance at the first assessment on the TPT indicated performance on subsequent assessments. While quantitative data was not a reliable predictive indicator of speech disorder, qualitative analysis of error types was predictive, with children who made many atypical errors at 2 years being diagnosed as phonologically disordered at 3 years. The findings provide initial evidence that direct formal assessment of 2-year-old phonology is possible.
Keyword phonology
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
UQ Centre for Clinical Research Publications
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Citation counts: TR Web of Science Citation Count  Cited 12 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 17 times in Scopus Article | Citations
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Created: Sun, 29 Mar 2009, 23:11:30 EST by Amanda Barnett on behalf of UQ Centre for Clinical Research