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LONGITUDINAL STUDY ON THE DEVELOPMENT OF SPEECH IN CHILDREN (6): DEVELOPMENTAL ORDER AND CONSISTENCY OF CORRECT ARTICULATION Kenjiro Owada 1 pp.183-193
Published Date 1971/3/20
DOI https://doi.org/10.11477/mf.1492207603
  • Abstract
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 Meaningful utterances of ten children were collected from the monthly one-hour recordings continued from the subjects' one year to three years of age. The syllables of the meaningful utterances were devided into either of the correct or of the wrong articulation, and the percentages of correct sounds were calculated for each phonemic group. The results were as follows:

 1) Though there was no definite order of appearance in individual phonemes, the patterns of development in consistency of correct articulation could be devided into two groups:one with p, b, m, t, d, n, k, g, w, j, dʒ, and tʃ with earlier attainment of consistency in correct articulation and the other h, ç, s, ʃ, ts, dz, and r with later and slower attainment. The former reached its consistent correctness (over 90% correctness of the sounds used) at about 22 months, and the latter developed from about 2 years of age with much individual differences in the speed of development.

 2) The comparison between the present data and the articulation test results previously reported by other writers showed much earlier acquirement of correct articulation in the present study.

 3) The sounds that appeared earlier in the meaningful utterances did not always reach consistent correctness earlier.


Copyright © 1971, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 印刷版ISSN 0386-9679 医学書院

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