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KMID : 1036820190240030715
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Communication Sciences & Disorders
2019 Volume.24 No. 3 p.715 ~ p.723
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Onset of Canonical Babbling in Children with and without Cleft Palate
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Ha Seung-Hee
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Abstract
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Objectives: The emergence of canonical babbling reflects a critical advance in development of speech capacity in the first year, and late onset of canonical babbling appeared to be a predictor of later speech and language disorders. This study aimed to examine characteristics and changes in canonical babbling in children with and without cleft palate (CP) using all-day recordings in naturalistic environments.
Methods: All-day home recordings using Language ENvironment Analysis (LENA) were obtained from 9 children with CP and 9 children without CP at four different time blocks from 4 to 21 months. Twenty 5-mintue segments with the highest child vocalization rate were extracted from each children’s LENA recording. Coders classified syllables as canonical and non-canonical syllables, syllables with glottal sounds, and syllables with glides. Group and age comparisons were conducted in terms of the number of each syllable type and canonical babbling ratios (CBR) at observed times.
Results: The results indicated that there were no significant group differences in total number of vocalization and syllables across the observed times. Children with CP produced fewer canonical syllables than children without CP at 13-15 months of age. The group differences in the CBR and true CBR were significant at 13-15 months and at 19-21 months.
Conclusion: This study suggests that children with CP show late onset of canonical babbling and group difference in the quality of babbling became evident even after surgical repair. This study highlights the importance of early intervention for children with CP.
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KEYWORD
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Canonical babbling, Onset, Cleft palate, Naturalistic environments, Longitudinal study
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