Eye-movement study during visual search in Chinese children with developmental dyslexia

PSYCH OpenIR > 认知与发展心理学研究室

	Eye-movement study during visual search in Chinese children with developmental dyslexia
其他题名	Eye-movement study during visual search in Chinese children with developmental dyslexia
	Li Xiuhong 1; Jing Jin 1; Yang DeSheng 1; Wang Hui1 ; Wang Qingxiong 1; Song Shanshan 1; Fan Fang 2
摘要	Background Developmental dyslexia (DD) is a disorder in which children with normal intelligence and sensory abilities show learning deficits in reading. Abnormal eye movements have been found in DD. However, eye-movement abnormalities during visual search among Chinese children with DD remain unknown. We aimed to identify the eye-movement characteristics and search efficiency of Chinese children with DD during visual search for targets of different conceptual categories, under same-category conditions.
其他摘要	Background Developmental dyslexia (DD) is a disorder in which children with normal intelligence and sensory abilities show learning deficits in reading. Abnormal eye movements have been found in DD. However, eye-movement abnormalities during visual search among Chinese children with DD remain unknown. We aimed to identify the eye-movement characteristics and search efficiency of Chinese children with DD during visual search for targets of different conceptual categories, under same-category conditions. Methods We compared 32 Chinese dyslexic children and 39 non-dyslexic children in visual search tasks, which were assessed using EyeLink II High-Speed Eye Tracker (SR Research Ltd., Canada). Letters, single Chinese characters, digits, Chinese phrases, figures and facial expressions were used as stimuli. Targets were similar to distractors in meaning, phonology and/or shape. Results A main effect of task on visual search scores and all eye-movement parameters were found. Search scores, average saccade amplitude and saccade distance were significantly smaller in the DD group than in the controls. An interaction between group and task was found for pupil diameter. Conclusions Unlike normal readers, children with DD had a reduction in the visual attention span and search accuracy. Besides, children with DD could not increase their mental workload with increase in task difficulty. The conceptual category of the stimulus materials significantly impacts search speed, accuracy and eye-movement parameters.
关键词	ATTENTION SPAN PERCEPTION STRATEGY children developmental dyslexia eye movement visual search
	2013
语种	英语
发表期刊	CHINESE MEDICAL JOURNAL
ISSN	0366-6999
卷号	126 期号:22 页码:4306-4311
收录类别	CSCD
资助项目	[National Natural Science Foundation of China] ; [Guangdong Natural Science Fundation] ; [Ph.D. Programs Foundation of Ministry of Education of China]
CSCD记录号	CSCD:4983978
引用统计	被引频次：1[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	https://ir.psych.ac.cn/handle/311026/35652
专题	认知与发展心理学研究室
作者单位	1.中国科学院广州地球化学研究所 2.中国科学院心理研究所
推荐引用方式 GB/T 7714	Li Xiuhong,Jing Jin,Yang DeSheng,et al. Eye-movement study during visual search in Chinese children with developmental dyslexia[J]. CHINESE MEDICAL JOURNAL,2013,126(22):4306-4311.
APA	Li Xiuhong.,Jing Jin.,Yang DeSheng.,Wang Hui.,Wang Qingxiong.,...&Fan Fang.(2013).Eye-movement study during visual search in Chinese children with developmental dyslexia.CHINESE MEDICAL JOURNAL,126(22),4306-4311.
MLA	Li Xiuhong,et al."Eye-movement study during visual search in Chinese children with developmental dyslexia".CHINESE MEDICAL JOURNAL 126.22(2013):4306-4311.