The cognitive profile and multiple-deficit hypothesis in Chinese developmental dyslexia.
The present study was conducted to examine the cognitive profile and multiple-deficit hypothesis in Chinese developmental dyslexia. Thirty Chinese dyslexic children in Hong Kong were compared with 30 average readers of the same chronological age (CA controls) and 30 average readers of the same reading level (RL controls) in a number of rapid naming, visual, phonological, and orthographic tasks. Chinese dyslexic children performed significantly worse than the CA controls but similarly to the RL controls on most of the cognitive tasks. The rapid naming deficit was found to be the most dominant type of cognitive deficit in Chinese dyslexic children. Over half of the dyslexic children exhibited deficits in 3 or more cognitive areas, and there was a significant association between the number of cognitive deficits and the degree of reading and spelling impairment. The present findings support the multiple-deficit hypothesis in Chinese developmental dyslexia.
Ho
Connie Suk-Han
CS
Department of Psychology, University of Hong Kong, China. shhoc@hkucc.hku.hk
Chan
David Wai-Ock
DW
Tsang
Suk-Man
SM
Lee
Suk-Han
SH
D002648:Child; D002681:China / Q000208:ethnology; D003072:Cognition Disorders / Q000208:ethnology*; D004410:Dyslexia / Q000208:ethnology*; D005260:Female; D006723:Hong Kong / Q000453:epidemiology; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D010468:Perceptual Disorders / Q000208:ethnology*; D010700:Phonetics; D011582:Psychological Theory; D012720:Severity of Illness Index; D014796:Visual Perception / Q000502:physiology; D014825:Vocabulary