Comparison of working memory level in elementary students with perceptual dyslexia, linguistic dyslexia and normal in reading
The aim of this study was to comparison of the level of working memory in elementary students with developmental dyslexia of perceptual type, linguistic type and normal type in reading. The research method was descriptive causal-comparative. This study included three statistical populations of elementary male students in the third and fourth grades with dyslexia of perceptual, linguistic and normal type in reading in Mashhad in the academic year of 2019- 2020 that 15 sample people were selected from each statistical population. Samples for the first and second populations were purposefully selected and samples for the third population were selected by cluster random sampling.The research instruments were Raven IQ tests (1956), Poure Etemad Persian reading assessment (2001), Kim Karad visual task (1945) and Wechsler direct and inverse memory(1945). Data were analyzed by multivariate analysis of variance. The results showed that the level of working memory in the three groups was significantly different (P0.001). The level of performance of the two dyslexic groups in the variables of phonological circle, visual-spatial plate and central performer was significantly lower than normal students. Also, the level of performance of linguistic dyslexic students was significantly lower than perceptual dyslexia in the phonological circle variable and no significant difference was observed between perceptual dyslexic students and linguistic dyslexic students in other variables. Therefore, based on the findings by strengthening working memory, dyslexic's reading performance can be increased. Also, since linguistically dyslexic students have defects in the phonological circle, they need to be specifically rehabilitated in this regard.
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