Cognitive factors related to the eye-movement indexes of children with Chinese reading disorder during reading article
Objective: To explore cognitive processing characteristics of children with Chinese reading disorder (RD), and the reationship to the eye-movement indexes during reading articles.Methods: In this case-controlled study, 19 children with RD and 19 school-aged children with normal reading ability as controls were recruited.The cognitive processing characteristics of the children were assessed with the Chinese Wechsler Intelligence Scale for Children (WISC-CR).The parameters of eye-movement were recorded when the children read articles,and the correlation between parameters of eye-movement and subtest scores of WISC-CR test was analyzed.Results: (1) In C-WISC tests, the RD children had lower scores than the control group in information[(8 ±3) vs.(10 ±3)], similarities[(9 ±2) vs.(11±3)],vocabulary[(11 ±2) vs.(13 ±3)],coding[(8±3) vs.(10 ± 3)], verbal intelligence quotient [(98 ± 13) vs.( 111 ± 15)], full intelligence quotient [(97 ± 12) vs.( 109 ± 16)],verbal comprehension factor[( 101 ± 14) vs.( 111 ± 13)], and attention/memory factor[(89 ± 13) vs.( 102 ± 17)].(2) The vocabulary and information scores were positively correlated with average fixation duration (r= -0.32, r = -0.27), and picture arrangement and digit span were negatively correlated with average fixation duration.Block design score was negatively correlated with average saccade amplitude (r= -0.31), and information score was positively correlated with average saccade amplitude ( r= 0.23).Conclusion: The children with Chinese reading disorder have deficits in the C-WISC tests, which mainly include the information, similarities, vocabulary, verbal comprehension factor, and attention/memory factor.The abnormal eye-movement model of children with Chinese RD during reading articles may be greatly related to their disabilities in the information, vocabulary.
reading disorderchildreneye movementChinese Wechsler Intelligence Scale for ChildrenChinesecase-controlled studies