Cognitive profiling in Chinese developmental dyslexia with attention-deficit/hyperactivity disorders |
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| Authors: | Won Shing Raymond Chan Se Fong Hung Suet Nga Liu and Cheuk Kiu Kathy Lee |
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| Institution: | (1) Kwai Chung Hospital, Hospital Authority, Hong Kong, Hong Kong;(2) Castle Peak Hospital, Hospital Authority, Hong Kong, Hong Kong;(3) The Department of Health, Hong Kong, Hong Kong |
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| Abstract: | The cognitive profiles of children with Developmental Reading Disorder (RD) and Attention-Deficit/Hyperactivity Disorders
(ADHD) have been extensively studied in alphabetic language communities. Deficits in phonological processing and rapid naming
have been implicated as core features of RD although whether the latter is a deficit specific to RD remains controversial.
Similar research aiming to explore the cognitive profiles of children with both RD and ADHD in non-alphabetic language communities
is limited. The specificity of rapid naming deficit to RD among Chinese has yet to be studied. In the first study, 43 Chinese
children with confirmed diagnoses of RD + ADHD were assessed on their cognitive abilities in relating to reading. In the second
study, the specificity deficit hypothesis of rapid naming to RD but not ADHD was examined. A digit naming test was administered
to the RD + ADHD group (43 subjects) and an ADHD only group (49 subjects). In regard to cognitive profiling, rapid naming
and orthographic knowledge were found to be the most common deficits among the Chinese RD + ADHD group. This co-morbid group
was also found to have a significant deficit performance on the rapid naming task than the ADHD only group. The present findings
support the double dissociation hypothesis in cognitive deficit between RD and ADHD. The results of both studies are discussed
with reference to the findings of the Western counterparts. |
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| Keywords: | RD ADHD Cognitive profiling Rapid naming Double dissociation hypothesis |
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