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KMID : 1035420200080040291
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Journal of The Korean Society of Integrative Medicine
2020 Volume.8 No. 4 p.291 ~ p.305
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Segment and Word Duration in Preschool Children
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Kang Eun-Yeong
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Abstract
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Purpose : The duration of speech segments reflects children’s speech motor development. The purpose of this study was to determine whether segmental sound and word duration varies by age among preschool children.
Methods : A total of 60 children aged 4~5 years participated in this study. Participants took the picture-naming test to produce single-word speech data. The duration of the consonant at the initial position of the word and the final position of the word, the voice onset time of plosive, the duration of the vowel following the initial consonant, and the duration of the word were measured.
Results : As age increased, the duration of the initial consonant, the duration of the word, and the voice onset time decreased significantly. The main effects of age, manner of articulation, and place of articulation on the duration of the initial consonant were significant. The duration of consonants in the nasal sound and plosives and the duration of bilabial and alveolar sound differed significantly between groups. The main effects of age and vocal type on voice onset time were significant. The main effect of age on the duration of the consonant in the final position of word and on the duration of the vowel were not statistically significant.
Conclusion : The results of this study showed that the duration of segmental sound and the word were associated with speech development between 4 and 5 years old. Accordingly, duration of the segmental sound and the word may serve as an acoustic cue as they reflect speech development and speech motor control maturity.
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KEYWORD
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consonant, duration, word
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