تعيين اثربخشي غني‌سازي ادراكي بر كاركردهاي اجرايي و عملكرد رياضي دانش‌آموزان با ناتواني يادگيري خاص در رياضي

The purpose of this study was to determine the effectiveness of perceptual enrichment on executive functions and mathematical performance of students with specific learning disabilities in mathematics. The method of this study was a semi-experimental pre-test/post-test with control and experimental groups. The statistical population was included all students with specific learning disabilities in mathematics from the fourth to sixth grades in Isfahan, among whom 30 students were selected through convenience sampling and randomly were divided into the experimental and control group (15 participants each group). However, due to the non-cooperation of the participants, 1 participant from the experimental group and 1 participant from the control group were left, and finally the sample size was reduced to 28 participants (14 participants each group). In order to eva‎luate studentsʹ intelligence, the Wechsler Intelligence Scale for Children (WISC-IV) was used in the pre-test phase. In adtion, in order to diagnosis and measure studentsʹ mathematical performance, the Keymath Test was used, and to measure the executive functions, the BRIEF Questionnaire and the N-back Working Memory Test were used in the pre-test and post-test stages. The experimental group particpated in 10 sessions of 45-60 minutes (twice a week) duration in perceptual enrichment intervention. The data was analyzed by using univariate and multivariate analysis of covariance tests. The results of this research indicated the effectiveness of perceptual enrichment on the improvement of executive functions (p<0.05), math performance (p<0.001) and working memory (p<0.001) of experimental group students. The results of this study showed that this intervention can have a positive effect on improvement of the executive functions and mathematical performance of students with specific learning disabilities in mathematics; Therefore, the results emphasized that the perceptual enrichment, which is based on strengthening visual perception skills, can be an effective approach in treating specific learning disabilities in mathematics. Therefore, the results of this research suggested that psychologists, teachers and educational experties in schools and psychological service centers could use the benefit of the perceptual enrichment intervention to reduce problems and improving the performance of students with specific learning disabilities in mathematics.

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