已有研究表明，工作记忆的缺陷是数学学习困难的根本原因。
It is found that deficit in working memory is the essential cause of mathematical learning disabilities.
这个发现假设ANS的缺陷可能是导致实验组孩子们数学学习困难的原因。
This finding suggests that problems with the ANS may underlie math difficulties for children in this group.
约10%的学龄儿童有着持续明显的数学学习困难，其中很多人数学成绩不及格。
About 10% of school-age children have persistent and significant difficulties with math, while many more fail to reach basic levels of mathematics achievement.
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