Time Course Research On Chinese Developmental Dyslexia Attention Shifts

For the study of the causes of dyslexia has been hotly debated. In recent years, there is alot of research are focused on the attention of dyslexia, and that attention shift problem maybe the root cause of dyslexia. In this study, in order to explore how attention of the Chinesereading disorder children shift, and how it relate with reading. E-prime programmingtechniques and eye movement technology are carried out a comparative study of Chinesedyslexic children and normal children. The course of the study include the selection ofsubjects, the preparation of materials, exercises experiments and formal experiments. Thestudy included two experiments: the first experiment is a mixed experimental design byAttentional Blink task paradigm, using3(T1digital number is6,10or14)×8(T1and T2between delay time)×2(T2presented and not presented), the dependent variable is thecorrect rate of T2processing. The second experiment is between-subject experimentaldesign.The dependent variable is to determine the correct rate of false words.The results show that:(1) in a Attentional Blink task, the Chinese dyslexic children withattention shifted significantly slower than normal children. the delay time is200ms.(2)dyslexic children and normal children in the attention shift process appeared the lag1sparingeffect.(3) in the fist fixation duration、 total fixation time、 total fixation count, significantdifference was found in dyslexia children and normal children. The performance of dyslexiais longer than normal children in the fist fixation and totle fixation time and total fixationcount is more than normal ones.(4) on the judgement rate of pseudoword, dyslexia childrenchildren was significantly lower than normal children.(5)on the first fixation duration, totalfixation time, fixation times and total pseudoword judgment to do regression analysis, it wasfound that the total number of fixation, total fixation count can explain the false wordscorrectly93.3%.From the above results, we can draw the following conclusions:(1) compared withnormal children, children with Chinese reading disabilities attention shift delay. This isconsistent with the foreign research. And consistent with the SAS theory.(2) children withdyslexia have the same attention transfer characteristics as normal children.(3) for Chinesechildren attention shift delay effect of phonological processing, thus the impact of reading.This is consistent with the foreign research results of alphabetic writing.(4) Note that thetransfer delay is the inherent weaknesses of dyslexic children. Speech defects is just itsoutward manifestation.(5) Chinese dyslexic children’s phonological awareness affect thereading.