Error analysis of writing to dictation of kanji words in japanese children with developmental dyslexia and normally developed children -using Screening Test of Reading and Writing for Japanese Primary School Children (STRAW)-

Abstract

We analyzed errors in writing to dictation of Kanji words in 708 children with normal development and 21 children with developmental dyslexia using the Screening Test of Reading and Writing for Japanese Primary School Children (STRAW). The 21 children with dyslexia had disorders in both phonological and visual information processing. As a result, the dyslexic group showed more no-responses than the normal group, and it had a tendency to write morphologically different letters. The children with developmental dyslexia showed error patterns dissimilar to those of the normal group, commonly leaving a wide space between each component of Kanji characters and writing letters at a slant. Furthermore, in the dyslexic group there were significant correlations between correct rate and imageability of words, and number of strokes. These results suggest that deficit of visual information processing is likely to affect the Kanji writing of children with dyslexia.