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A longitudinal study on the early vocabulary development of children with hearing impairment - Expressive word development after the appearance of the proto-word -

  • Journal of Special Education: Theory and Practice
  • Abbr : JSPED
  • 2007, 8(4), pp.141-159
  • Publisher : Research Institute of the Korea Special Education
  • Research Area : Social Science > Education

서영란 1,  Park Kyung Ran 2,  Byung-Ha Kim 1

1대구대학교
2우석대학교

Accredited

ABSTRACT

This study shows the increase number of expressive word by increasing age of children with hearing impairment, and the patterns of changes in part of speech. 8 children with hearing impairment who were found before chronological age 3 were involved in this study, and vocabulary data was collected every 6 months since the appearance of the proto-word. As a result, in the period of the appearance of the proto-word, they respectively show a marked difference. As they develop their vocabularies based on nouns, they gradually start using verbs and adjectives, and then utilizing grammatical morpheme after expressing some amounts of the content words. Furthermore, their vocabularies were increased dramatically in a specific period, however period of the dramatic increase differed among children. Through these results, we can expect that the patterns of vocabulary development of hearing impaired children are similar to those of the hearing children. The period of the rapid increase in vocabularies can be divided largely into two patterns: one is the pattern of the rapid increase of vocabularies immediately with the appearance of the proto-word, and the other that of rapid increase of the vocabularies between 6 months and 12 months after the appearance of the proto-word.

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