中国科学院行为科学重点实验室知识库

基于视觉大细胞-背侧通路理论，考察游戏化训练干预后，有、无应答的发展性阅读障碍儿童在认知特征和缺陷方面的差异，为视觉大细胞-背侧通路功能在汉语阅读中的作用机制提供理论启示。从北京市某小学与某医院筛选出2～5年级阅读障碍儿童23名，并对其进行为期7周的视觉大细胞-背侧通路游戏化干预。在干预前、后分别对阅读障碍儿童的视觉大细胞-背侧通路功能、阅读及阅读相关能力进行测试。使用后测数据，参照干预-应答模式将阅读障碍儿童划分为应答组与无应答组，并比较两组被试前测时的认知特征及缺陷情况。结果表明:(1)只有部分阅读障碍儿童能成为应答者;(2)无应答者在图片快速命名、正字法意识、语素意识和语音意识测试中的前测成绩要显著低于应答者;(3)图片快速命名、语音意识可显著预测干预应答效果。个体可能需要具备一定的图片快速命名和语音意识基础，才能通过视觉大细胞-背侧通路功能训练提升其阅读能力。

Abstract: The article explores how the visual magnocellular-dorsal (M-D) pathway affects Chinese reading by investigating how children with developmental dyslexia respond to a game-based intervention that targets the function of M-D pathway and comparing the cognitive profiles and weaknesses of responders and non-responders. The intervention was conducted for 7 weeks with 23 dyslexics from Grades 2 to 5. The M-D pathway function，reading and reading-related abilities of these children were assessed before and after the intervention. Based on the Response to Intervention model, these children were classified into two groups according to their posttest results: a response group and a non-response group. The cognitive profiles and weaknesses of the two groups were then compared. The results showed that:(1) Only some dyslexics became responders;(2) The non-response group had significantly lower scores than the response group in the pre-test measures of rapid picture naming，orthographic awareness, morpheme awareness and phonological awareness; (3) Rapid picture naming and phonological awareness were significant predictors of the response intervention effect. Hence，the improvement of Chinese reading ability through the M-D pathway may depend on a certain level of rapid picture naming ability and phonological awareness.

国家自然科学基金面上项目(31871117)