...于学习障碍的类型研究 美国学者Ⅺrk和Chalfanf提出学习障碍有两种类型：发展性学习障碍 （Developmental Learning Disabilities）和学业性学习障碍（AcademicLearning Disabilities）。
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这可能有助于解释为什么儿童在数字文化中有发展性计算障碍觉得如此艰难来学习算术。
This may help explain why children in numerate cultures with developmental dyscalculia find it so difficult to learn arithmetic.
患有发展性计算障碍的儿童在学习、生活和以后的工作中都会遇到很多的困难，关于发展性计算障碍的研究应该引起人们的重视。
The children with developmental dyscalculia will encounter many problems in their study, life and future, so we should devote much attention to it.
发展性阅读困难是学龄儿童常见的学习障碍，其病源学问题极其复杂，很多行为遗传学家针对遗传和环境对阅读困难的影响进行了大量的研究。
Developmental dyslexia is very common in school children and its etiology is very complicated. Many researches have been carried out to study the genetic and environmental influence on dyslexia.
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