学校健診における言語異常調査　　サ行構音障害をめぐって

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タイトル別名
  • Abnormal articulations in school children : Interdental sigmatisms.
  • Interdental Sigmatisms
  • ―サ行構音障害をめぐって―

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It is well known that many school children, particularly of young age, show articulation errors in the course of speech development. However, most of errors of this type are usually overlooked by physicians who are in charge for the regular health check in school. As one of the examples of articulation errors in Japanese, interdental articulation of /s/ has often been noted. In the present study, the incidence of interdental /s/ was observed in 7274 children in selected schools in Hachiooji, Tokyo, at the time of regular health checkup. As a test procedure, a simple observation of the face was made while the child was uttering his or her name in front of the examiner. As a result, interdental articulation was found in 18.7% of the children in the lower grade, while the incidence decreased to 4% in the higher grade. The latter incidence remained unchanged even in high school students. Most of the children showing interdental articulation of /s/, also had a tendency of interdental pronunciation of /t/ and /n/. Medical examinations revealed that those children showing interdental articulation did not have any severe impairments such as rhinitis, hypertrophic tonsils and dental abnormalities which might force them to open their mouth. It was argued that even minor articulation errors might cause a disturbance in human communication, particularly occupational situation in social life. From this view point, significance of speech correction in school was emphasized.

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