These imaging studies have been cited by some educators as proof that Braille is essential for blind children's cognitive development, as the visual cortex takes more than 20 percent of the brain.
这些成像研究被一些学者所引用来印证布莱叶盲文对于盲童的感知发育是至关重要的，因为大脑的20%都是视觉皮层。
Video games and TV might keep children engaged for hours on end, but they are not helpful to children's overall cognitive development.
电子游戏和电视可能会让孩子们连续玩上几个小时，但它们对孩子的整体认知发展没有帮助。
Early childhood experiences can be very consequential for children's long-term social, emotional and cognitive development.
早期童年经历会对儿童在社会、情感和认知方面的长期发展产生很大影响。
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