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The Assessment using Colored Overlay for Dyslexic Learning Disorder having Visual Information Processing Deficit

  • Journal of Special Education: Theory and Practice
  • Abbr : JSPED
  • 2007, 8(4), pp.313-336
  • Publisher : Research Institute of the Korea Special Education
  • Research Area : Social Science > Education

박승환 1 YoungGun Jang 2

1을지대학교
2청주대학교

Accredited

ABSTRACT

Recently many researchers suggested that a main reason of dyslexia is visual magnocellular system disorder in the brain. But in Korea, any clinical test is not recommended to identify visual processing deficit as leaning disorder assessment measure. In this study, I developed a clinical test tool and procedures to identify visual processing deficit as learning disorder assessment measure applying Wilkins reading rate test with necessary modification. The test was applied to 7 primary school pupils with dyslexic learning disorder and 1 normal pupil who were selected by using a self test questionnaire. The results of the test show that reading speed of 3 dyslexic participants using a chosen colored overlay is improved significantly compared with the case without it, the numbers of false reading word and skip reading word are reduced significantly and reading continuation time of a normal pupil is extended very significantly. I think WRRT is necessary to piece out reading continuation time to get more reliability of the test. We found the pupils having visual information processing deficit among pupils with learning disorder they were identified by assessments considering no visual factor and could not make certain they have both of visual and phonological deficit. The developed tool may be used as a supplementary leaning disorder assessment tool.

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