Cognitive chararteristics for Chinese characters in children with dyslexia

Objective To explore the cognitive deficits of Chinese dyslexic children in characters' recognition and words access.Methods 30 children from primary school were selected,including 15 dyslexic children and 15 non-dyslexic children.The tasks of characters' recognition and words access were used.Results Naming task without priming character results showed reaction time of dyslexic children was longer than that of control group〔dyslexia:(2122±0170).control:(1.73 ±0.30)〕and the correct rate(%)of dyslexics was lower.（(dyslexia:(96.00±6.00),control:(100.00±0.00)）.Both of them had significant difference(P<0.05).Lexical decision task without priming character results showed reaction time of dyslexic children was longer than that of control group（dyslexia:(4.81±1.38)control:(3.48±0.55)）.and the correct rate(%)of dyslexics was lower(dyslexia:(91.7±6.5),control:(98.1±2.6)).Both of them had significant difference(P<0.01).When the priming tasks were phonological and semantic,similar results were showed.Conclusion Dyslexic children possessed processing deficits in these two accesses:the first one was from grapheme to meaning;the second one was from grapheme-phonology to meaning.