국내 영아의 발성 및 조음발달 목록 개발 = The Development of Korean Infant Vocal and Articulatory Development List

다국어 초록 (Multilingual Abstract)

Purpose: The purpose of this study was to develop Korean Infant Vocal and Articulatory Development (KIVAD) list and to set up a baseline for ultimately applying for articulations and vocalization of infants’ aural rehabilitation program. Methods: 24 normal hearing infants at 1-3 month age group, 28 at 4-5, 33 at 6-7, 34 at 8-9, 34 at 10-11, 35 at 12-13, 36 at 14-15, 23 at 16-17, 35 at 18-19, 37 at 20-21, and 43 at 22-24 participated in this study. We videotaped and analyzed their 34,065 vocalizations and articulations. The vocalization samples were analyzed according to 24 types of vocalization, and then counted prevalence of a certain vocalization out of total. The articulation samples were analyzed by 17 vowels and 18 initial and seven final consonants. Two analysis methods were used. One was the proportion analysis showing a ratio of prevalence of production for a certain month period of each articulation. The other was the acquisition age analysis showing a percentage of infants who produced corresponding articulation more than three times out of total infants. Then the results were classified emerging level (25-49%), acquisition level 1 (50-74%) and acquisition level 2 (75% and over). Based on these analyses, KIVAD was composed. Results: Vocal developmental section was presented at ‘KIVAD_V’ and articulatory developmental sections were presented at ‘KIVAD_AA’ and ‘KIVAD_AB’ based on two analysis methods. Conclusion: KIVAD can be utilized to determine an infant’s vocalization and articulation level and be useful for setting a goal in the aural rehabilitation program for the hearing impaired infants.

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