Development Of Diagnostic Dyslexia Test Of Morphological Awareness For3—4Grades

Object ive:Based on the CTT (Classical Test Theory) and RSM (rule space model), preliminarily Development of Diagnostic Dyslexia Test of Morphological awareness for3—4Grades.Methods:The framework of the test was developed by accessing the previous research products and interviewing with students^teachers and experts. After analyzing items of test, Two parallel formal tests which separately contained27items came out. The formal samples of tests all were assumed from YueYang, the city of HuNan, and2138effective samples were adopted, which were including996normal samples of test A, and940normal samples of test B,73RD (reading disabilities) samples of the diagnostic dyslexia test A and129RD samples of diagnostic dyslexia test B. And then obtaining effective samples of retest about134,139predictive validity samples of diagnostic dyslexia test A and100of diagnostic dyslexia test BResults:The firsthand score of the diagnostic dyslexia test increased progressively with grade, and there was a significant difference between normal pupils and RD pupils in every subtest and whole test scores. The item analysis of CTT showed that the average item difficulty of test A was0.79, and test B was0.77. The retest reliability of test A was0.764, and test B was0.756. The internal consistency reliability of test A was0.69, and test B was0.68. And criterion validity. The predictive validity of test A was o.775, test B was0.790. The confirmatory factor analysis showed that the fit indexes were well. It indicated that the structure of the test was reasonable. The result of analysis by RSM showed that more than90%pupils·of RD were classified to typical attribute-mastery patterns1、2.Conclusion:The difficulties and discriminations of test A and B were well. The reliabilities and validities of test A and test B had basically reached the requirements of survey. Typical attribute-mastery patterns and attribute-mastery probability could provide embody diagnostic report for teachers and the children with RD.