عنوان مقاله [English]
Purpose of this study examined the reliability and validity and spelling diagnostic test for fourth grade students is based. To do so, first from read the book based on fourth grade spelling test is that the two parts were designed. The basis of all fourth grade students in Kermanshah were have been studying in 92-1391. 34 normal students and 33 LD students in the fourth grade who were dictated disorder were randomly selected. Test was designed to be read slowly and they wrote them. Data analysis showed that Cronbach's alpha reliability of the total test calculated with 97/0 to the desired reliability is obtained. In order to test the validity of Differentiated groups and the distinction between normal and LD power cut using ROC curve was used. Test results showed that the mean of the normal group was prepared in 16/97and mean group LD, 6/48 score of 20 is considerably different from each other and the p < 0/05 is significant. Hence, the validity of the test was verified.