Reading and Writing

, Volume 21, Issue 6, pp 661–674 | Cite as

Cognitive profiling in Chinese developmental dyslexia with attention-deficit/hyperactivity disorders

  • Won Shing Raymond Chan
  • Se Fong Hung
  • Suet Nga Liu
  • Cheuk Kiu Kathy Lee


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.


RD ADHD Cognitive profiling Rapid naming Double dissociation hypothesis 



Thanks are due to the participants and their parents for the two studies.


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Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • Won Shing Raymond Chan
    • 1
  • Se Fong Hung
    • 1
  • Suet Nga Liu
    • 2
  • Cheuk Kiu Kathy Lee
    • 3
  1. 1.Kwai Chung HospitalHospital AuthorityHong KongHong Kong
  2. 2.Castle Peak HospitalHospital AuthorityHong KongHong Kong
  3. 3.The Department of HealthHong KongHong Kong

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