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- 長谷川 寿珠
- 名古屋大学医学部耳鼻咽喉科学教室
書誌事項
- タイトル別名
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- Hearing and language ability in mild and moderate hearing impaired children.
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抄録
102 children (mean age-7 years 9 mo.) with mild and moderate perceptive hearing impairment who had neither any auditory training nor had used a hearing aid were studied. Mean hearing level was 51.9dB. Our findings :<br>(1) Speech discrimination score (SDS) correlated with the hearing level at 2, 4 and 1kHz, in that order. In all patients, SDS gradually worsened to 60dB before registering a sharp decline ; SDS was better than in patients who had acute unilateral hearing impairment and similar audiogram patterns, especially in vowels.<br>(2) Correlation existed between the rate of accurate articulation and hearing levels at 2 and 4kHz ; it improved with age but plateaued at around 8 years. In children with a high tone loss, distortion and confusion of fricatives, plosives, unvoiced affricates and postconsonantal vowel /i/ were marked besides articulation errors commonly attributable to normal speech development.<br>(3) On the WISC and WISC-R intelligence scale, verbal intelligence score had little correlation with performance intelligence and was influenced by hearing levels at 2, 4 and 1kHz, in that order. When the mean hearing level was over 40dB, verbal intelligence was frequently below par. Performance intellgence grew worse with age.<br>(4) Children with a mild hearing loss exhibited a slight delay in vocalizing the 1st word and combining 2 words together while in those with a moderate loss, the delay in combining 2 words was pronounced. In both mild and moderate hearing loss, verbal intelligence was low when there was a delay in the ability to vocalize two words together.
収録刊行物
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- 日本耳鼻咽喉科学会会報
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日本耳鼻咽喉科学会会報 93 (9), 1397-1409, 1990
一般社団法人 日本耳鼻咽喉科頭頸部外科学会