Abstract

This 2-year longitudinal study sought to identify a developmental pattern of Chinese and English reading skills in children with and without dyslexia from 6 to 8years of age. Three groups of 15 children each—those with dyslexia, age-matched (AM) controls, and reading-matched (RM) controls—participated. Dyslexia was diagnosed at 8years of age. All children were tested on phonological awareness, rapid automatized naming (RAN), morphological awareness, word reading, and vocabulary knowledge in both Chinese and English and also speed of processing skill. AM controls outperformed the group with dyslexia on all measures except for phonological awareness, English word reading, and vocabulary. However, those with dyslexia and AM controls developed at a similar rate across all reading-related skills from 6 to 8years of age. Compared with the RM controls, the group with dyslexia scored higher in phonological awareness, morphological awareness, and vocabulary knowledge in both Chinese and English and also in English word reading but scored similarly in RAN. Children with dyslexia, thus, manifested clear difficulties in Chinese vocabulary knowledge, morphological awareness, and RAN as well as general speed of processing, representing a developmental lag in cognitive skills. Among these, RAN deficits are likely to be the most severe deficits in Chinese children with dyslexia.

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