The Number Sense Deficit of Children With Developmental Dyscalculia

Abstract

Abstract: Developmental dyscalculia (DD) is a specific learning disorder that is characterized by a persistent impairment in processing numerical information and learning arithmetic facts. In the current study, an experiment was designed to verify whether or not the number sense of DD is impaired and the deficits number sense is specific to DD children. Seventy-two DD children, 86 dyslexia children, 69 dyslexia dyscalculia double-deficit children and 86 typical developmental children were asked to complete the non-symbolic magnitude comparison task which was usually used to measure number sense ability. The results showed that there was a significant difference in the number sense between DD children and typical development children which were with lower acuity. In addition, there was a significant difference in the number sense among dyslexia children, double-deficit children and typical development children. The acuity of typical development children was significantly higher than developmental dyslexia children and double-deficit children. Therefore, it is concluded that the number sense deficit of children may be one cause of DD, but it is not specific to DD.

Key words: number sense, developmental dyscalculia, developmental dyslexia, non-symbolic magnitude comparison task

摘要： 为了探究计算障碍儿童是否存在数感缺陷以及这种缺陷是否特异于计算障碍儿童，本研究使用非符号数量比较任务，以小学二三年级学生为被试，测量了计算障碍（72名）、阅读障碍（76名）、双障碍（69名）以及正常儿童（86名）的数感能力。结果显示：（1）在正确率和韦伯分数指标上，计算障碍组和正常组儿童数感能力差异显著；（2）阅读障碍组和双障碍组也存在数感缺陷。表明计算障碍儿童的确存在数感缺陷，然而数感缺陷并不特定于计算障碍儿童。

关键词: 数感, 计算障碍, 阅读障碍, 非符号数量比较任务

CLC Number:

B842.1

ZHANG Libin, ZHANG Li, FENG Tingyong. The Number Sense Deficit of Children With Developmental Dyscalculia[J]. Studies of Psychology and Behavior, 2019, 17(4): 512-519.

张李斌, 张丽, 冯廷勇. 发展性计算障碍儿童的数感缺陷[J]. 心理与行为研究, 2019, 17(4): 512-519.

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