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KMID : 1036820190240030724
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Communication Sciences & Disorders
2019 Volume.24 No. 3 p.724 ~ p.734
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Developmental Study of Korean Lax, Tense and Aspirated Consonants in 2- to 7-Year-Old Children
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Ryu Eun-Joo
Kim Mi-Jin
Ha Ji-Wan
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Abstract
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Objectives: In this study, we investigated the developmental patterns of lax, tense and aspirated sounds in words by age. We also compared the differences of the error patterns for three different phonation types among age groups, and identified age-appropriate error patterns.
Methods: We conducted a word-level test of Urimal Test of Articulation and Phonology-2 (UTAP2) for typically developing children from 2 to 7 years of age in Seoul/Gyeonggi, Chungcheong, and Jeolla areas in Korea. We assessed children’s speech accuracy in words with lax, tense and aspirated consonants. Also, we conducted a detailed review on characteristics of developmental error patterns shown by children.
Results: Our study found that accuracy by phonation type was higher as the children’s ages increased, and development of phonation types was almost completed at age 3 and stabilized at age 4. The aspirated consonants were the slowest to develop, and their accuracy was lower than that of the other two phonation types until 3 years old. As a result of analyzing the error patterns reflecting the unique characteristics of Korean fricatives and regional dialects, this study consequently identified tensification of lax consonants and tensification of aspirated consonants as age-appropriate error patterns at age 2.
Conclusion: This study provides meaningful information on the development of error patterns and the accuracy of speech sound production by phonation types according to age, considering the characteristics of Korean in large-scale national data.
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KEYWORD
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Lax, Tense, Aspirated, Phonation types of Korean, Tensification of lax, Tensification of aspirated
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