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ERIC Number: EJ1158889
Record Type: Journal
Publication Date: 2017
Pages: 16
Abstractor: As Provided
ISSN: ISSN-1088-8438
Impaired Orthographic Processing in Chinese Dyslexic Children: Evidence from the Lexicality Effect on N400
Tzeng, Yu-Lin; Hsu, Chun-Hsien; Lin, Wan-Hsuan; Lee, Chia-Ying
Scientific Studies of Reading, v21 n6 p515-530 2017
This study used the lexicality effects on N400 to investigate orthographic processing in children with developmental dyslexia. Participants performed a Go/No-Go semantic judgment task; three types of stimuli--real characters (RC), pseudocharacters (PC), and noncharacters (NC)--were embedded in No-Go trials. Two types of lexicality effects (RC vs. NC and PC vs. NC) were used to reflect the sensitivity to Chinese orthographic knowledge. In typical developing children, NC elicited a more negative N400 in frontal sites and a less negative N400 in bilateral posterior sites than RC and PC. The reversed lexicality effects in anterior and posterior sites support the dual-mechanism for lexical retrieval. Children with dyslexia revealed a more negative N400 for NC in frontal sites compared with RC, suggesting that they remained sensitive to orthographic familiarity. However, no difference between NC and PC was observed, suggesting a weakness in capturing Chinese orthographic knowledge in children with dyslexia.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: China
Identifiers - Assessments and Surveys: Peabody Picture Vocabulary Test
Grant or Contract Numbers: N/A