4. Word Sound Retrieval Abilities in Japanese Children With Developmental Dyslexia - Report Based on the Use of Picture Naming Tasks in Discrete Condition

Takashi Gotoh 1, 2*, Akira Uno 2, 3 and Noriko Haruhara 1, 2

  1. Faculty of Health Sciences, Mejiro University, Japan
  2. LD/Dyslexia Centre, Japan
  3. Faculty of Human Sciences, University of Tsukuba, Japan

Abstract

Developmental dyslexia (DD) is assumed to be partially caused by word sound retrieval difficulty. We analyzed the word sound retrieval abilities in Japanese children with DD with and without developmental language disorder (DLD) using picture naming tasks in discrete conditions. The participants in this study were 28 children with DD (9 with and 19 without DLD) and 18 children with typical development from third to eighth grades. All groups were matched for chronological age. We evaluated the number of correct responses and reaction time of picture naming tasks using 10 colours and 100 objects. Picture naming stimuli were selected from the Test of Lexical Processing in Aphasia (TLPA), Standard Language Test of Aphasia (SLTA) and Supplementary Tests for Standard Language Test of Aphasia (SLTA-ST). Children with DD and DLD showed lower scores in the object naming task than those in children with typical development and with DD alone (p<.000). Children with only DD manifested scores in the normal range. Our results suggest that picture naming connects with spoken language development. Japanese children with DD without DLD have no problem in word sound retrieval abilities in discrete conditions.

Keywords:           developmental dyslexia, developmental language disorder, picture naming task, vocabulary

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4. Word Sound Retrieval Abilities in Japanese Children With Developmental Dyslexia - Report Based on the Use of Picture Naming Tasks in Discrete Condition
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