کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
371031 621894 2016 14 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Dissociation between exact and approximate addition in developmental dyslexia
ترجمه فارسی عنوان
تفکیک بین افزایش دقیق و تقریبی در نارساخوانی رشدی
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تولید محتوا
با 10 درصد تخفیف ویژه دانشیاری
کلمات کلیدی
نارساخوانی؛ محاسبه دقیق. تقریب؛ پردازش واجی؛ حس تعداد
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
چکیده انگلیسی


• Exact and approximate addition with symbolic Arabic digits and non-symbolic visual arrays of dots were compared between typically developing children and children with dyslexia.
• The two groups of children had no differences in approximation.
• Children with dyslexia had significantly lower accuracy in exact addition in both symbolic and non-symbolic tasks than that of typically developing children.
• Linguistic performances were selectively associated with exact calculation, but not with approximation across individuals.

Previous research has suggested that number sense and language are involved in number representation and calculation, in which number sense supports approximate arithmetic, and language permits exact enumeration and calculation. Meanwhile, individuals with dyslexia have a core deficit in phonological processing. Based on these findings, we thus hypothesized that children with dyslexia may exhibit exact calculation impairment while doing mental arithmetic. The reaction time and accuracy while doing exact and approximate addition with symbolic Arabic digits and non-symbolic visual arrays of dots were compared between typically developing children and children with dyslexia. Reaction time analyses did not reveal any differences across two groups of children, the accuracies, interestingly, revealed a distinction of approximation and exact addition across two groups of children. Specifically, two groups of children had no differences in approximation. Children with dyslexia, however, had significantly lower accuracy in exact addition in both symbolic and non-symbolic tasks than that of typically developing children. Moreover, linguistic performances were selectively associated with exact calculation across individuals. These results suggested that children with dyslexia have a mental arithmetic deficit specifically in the realm of exact calculation, while their approximation ability is relatively intact.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Research in Developmental Disabilities - Volume 56, September 2016, Pages 139–152
نویسندگان
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