Objective:To develop the Chinese Developmental Dyslexia Assessment Test(C-DDAT)and test its validity and reliability.Methods:The present study developed a battery of Chinese dyslexia assessment test com-posed of 3 factors of reading accuracy,reading fluency and reading comprehension.Construct validity,internal con-sistency reliability and alternative-form reliability were tested in a sample of 1925 1-6 graders.Test-retest reliabili-ty was tested in 63 typically developing children and 26 children with developmental dyslexia.Results:Three-factor structure model fitted well(x2/df=5.91,CFI=0.996,TLI=0.992,SRMR=0.014,RMSEA=0.056).Criterion-related validities were 0.51-0.98.Internal consistency reliability of character reading accuracy was 0.99,the alter-nate-form reliabilities of character reading fluency and reading accuracy were 0.94 and 0.98,respectively.Test-re-test reliabilities were 0.73-0.98.The ROC curve analysis of clinical sample revealed that discriminant sensitivity and specificity of reading quotient(comprehensive score)were 0.92 and 0.98 respectively.Conclusion:The validi-ty and reliability of the Chinese Developmental Dyslexia Assessment Test meet the standards of psychometrics and could be used to evaluate children's basic reading skills in research and diagnosis of Chinese developmental dyslexia in clinical practice.
维普
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