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KMID : 1036820200250010104
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Communication Sciences & Disorders
2020 Volume.25 No. 1 p.104 ~ p.112
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Canonical Babbling Development in Korean-Acquiring Infants
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Jang Hyun-Sung
Ha Seung-Hee
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Abstract
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Objectives: Of the various types of vocalization produced by children early on, canonical babbling is an important milestone that shows a high correlation with later speech-language development. This study aimed to investigate the development of canonical babbling from 0-6 months to 18-20 months and check the number of expressive words at 18-20 months. Also, we tracked the developmental changes of the canonical babbling from 0-20 months to confirm the onset and developmental process of canonical babbling in Korean-acquiring infants.
Methods: The Language ENvironment Analysis system collected vocalization data produced by children during the day in a natural environment for 22 children recruited longitudinally and 59 children recruited cross-sectionally. Twenty 5-minute recorded vocalization data with the highest child vocalization rate were selected for each child, and the canonical babbling ratio was measured based on auditory perception analysis.
Results: The results from the longitudinal and cross-sectional study showed that the canonical babbling ratio increased significantly after 7-8 months. Of the 22 children in the longitudinal study, 7 children produced less than .15 of the canonical babbling rate at 9-11 months of age, indicating that they had not entered the canonical babbling stage by then. Three of them represented less than the 10%ile in the Korean version of the MacArthur-Bates communication development assessment at 18-20 months of age.
Conclusion: This study examined the development of canonical babbling from 0-6 months to 18-20 months. This is the first effort to present the development process and onset of the canonical babbling in Korean-learning children.
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KEYWORD
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Canonical babbling, Canonical babbling ratio, Auditory perception analysis, Korean-learning infants
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