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Vocabulary and Grammar Differences Between Deaf and Hearing Students.
Noboru Takahashi1, Yukio Isaka2, Toshikazu Yamamoto2
1Osaka Kyoiku University and noborut@cc.osaka-kyoiku.ac.jp.
Journal of Deaf Studies and Deaf Education
|September 14, 2016
Summary
This study examined literacy skills in Japanese deaf and hard-of-hearing (DHH) children. DHH children showed delays in vocabulary and grammar compared to hearing peers, but kanji knowledge was closer.
Area of Science:
- Linguistics
- Developmental Psychology
- Education
Background:
- Literacy development is crucial for academic success.
- Deaf and hard-of-hearing (DHH) children often face unique challenges in acquiring literacy skills.
- Understanding the specific components of literacy in DHH children is essential for targeted interventions.
Purpose of the Study:
- To investigate the development of literacy skills in deaf and hard-of-hearing (DHH) children in Japan.
- To assess vocabulary, orthographic knowledge, and grammatical knowledge in DHH children.
- To compare the literacy skills of DHH children with those of their hearing peers.
Main Methods:
- Utilized subtests from the Adaptive Tests for Language Abilities (ATLAN).
- Assessed three literacy components: vocabulary, orthographic knowledge (kanji), and grammatical knowledge.
- Included 207 DHH children (grades 1-12) and 425 hearing children (grades 1-6).
Main Results:
- Vocabulary variance in DHH children was largely explained by orthographic and grammatical skills.
- DHH children demonstrated significant delays in vocabulary and grammar compared to hearing children.
- The gap in kanji knowledge between DHH and hearing children was smaller than in other literacy areas.
Conclusions:
- Literacy development in DHH children is influenced by vocabulary, orthography, and grammar.
- Targeted instructional strategies are needed to address vocabulary and grammar deficits in DHH children.
- While delayed, the grammatical response patterns of DHH children align with normative predictions, suggesting potential for effective learning.
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