Visual Attention Span of Primary School Students With Chinese Developmental Dyslexia
In order to investigate the visual attention span(VAS)deficit of primary school students with Chinese developmental dyslexia(DD)in the low age group,28 primary school students with developmental dyslexia(DD)and 28 typically developing(TD)students were selected from the low age group of 7-9 years oldas subjects.This study adopted 2(subjects groups:primary school students with DD、primary school students with TD)×2(Chinese character types:simple、complex)two-factor hybrid design,using visual-1-back task to measure visual attention span,record accuracy,reaction time of correct response,and calculate the discrimination index d'value.The results show that the accuracy and discernment index of the DD group are lower than that of the TD group,and the reaction time of the DD group is higher than that of the TD group.Besides,the accuracy and discrimination index of simple Chinese characters are higher than that of complex Chinese characters,and the response time of simple Chinese characters is lower than that of complex Chinese characters.Primary school students with low age and DD show visual attention span deficit in Chinese characters,which further supports the view of visual-to-speech mapping.
developmental dyslexiaprimary school studentsvisual attention span
NETL
NSTL
万方数据
