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KMID : 1036820160210040567
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Communication Sciences & Disorders
2016 Volume.21 No. 4 p.567 ~ p.579
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Consonant Frequency and Phonological Characteristics of Eojeols in Spontaneous Speech Samples from 18- to 30-Month-Old Korean Children
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Ha Seung-Hee
Pi Min-Kyeong
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Abstract
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Objectives: This study aims to investigate frequency of consonants and the phonemic characteristics of the initial position of eojeols in spontaneous speech samples from typically developing children age 18 to 30 months.
Methods: Twenty children age 18 to 24 months and 20 children age 25 to 30 months participated in the study. Spontaneous speech samples were collected while children interacted with their parents and an examiner and were phonetically transcribed. The speech samples consisted of 5,622 utterances and 11,258 eojeols, from which consonants frequencies, frequency ratios by consonants types, consonant types of the initial position of eojeols, and articulation accuracy of the initial consonants were obtained.
Results: /k, n, m, t, ŋ/ showed the highest frequency rates. Alveolar sounds by articulation places and plosive sounds by manners showed the highest frequency rates. The 18- to 24-month-old children showed a significantly higher rate of plosive sounds and lower rate of liquid sounds than the 25- to 30-month-old children. The frequency rates of obstruents and sonorants were 61.65% and 38.35%, respectively, for both age groups. The rates of eojeols beginning with obstruents and sonorants were 44.59% and 55.41%, respectively, in both age groups. The percentage of consonants correct in the initial consonants of eojeols was significantly higher in the 25- to 30-month-old children (88.46%) than 18- to 24-month-old children (77.65%).
Conclusion: This study has implications for choosing target phonemes of speech therapy and in assessing whether children select or avoid words based on the limitations of their phonological development.
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KEYWORD
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Spontaneous speech samples, Consonant frequency, Initial consonants of eojeols, 18- to 30-month-old children
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