| Project/Area Number |
06610274
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Educaion
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| Research Institution | The National Institute of Special Education |
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Principal Investigator |
NAKAGAWA Tatsuo National Institute of Special Education, Senior Researcher, 聴覚言語障害教育研究部, 室長 (00164137)
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| Co-Investigator(Kenkyū-buntansha) |
SATO Hiroaki National Institute of Special Education, Senior Researcher, 聴覚言語障害教育研究部, 室長 (70249944)
SUGAWARA Koich National Institute of Special Education, Director of Research, 聴覚言語障害教育研究部, 部長 (30000269)
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| Project Period (FY) |
1994 – 1995
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| Project Status |
Completed (Fiscal Year 1995)
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| Budget Amount *help |
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1995: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1994: ¥1,100,000 (Direct Cost: ¥1,100,000)
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| Keywords | hearing-impairment / infant / canonical babbling / hearing-aid |
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| Research Abstract |
The traditional belief that audition plays a minor role in infant vocal development depends on evidence that deaf infants produce the same kinds of sounds as hearing infants in the early stage of life. A more extensive comparison of vocal development in deaf and hearing infants conducted in the US indicates that the traditional belief is in error. A comparative study of the speech-like vacalization of two hearing-impaired infants and three hearing infants was conducted in order to examine the role of auditory experience in the vocal development. Well-formed syllable repetition which is called "canonical babbling") was occurred by the first 10 months of life by hearing infants but not by deaf infants, indicating that audition plays an important role in vocal development. The difference between babbling in the deaf and hearing is apparent if infant vocal sounds are observed from articulatory and acoustic patterns of speech sounds produced by deaf and hearing infants. If the age of onset of amplification was deduced from the age of onset of canonical babbling then deaf infants should benefit from the interaction between auditory perception and vocal production which occur at this time.
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