研究人员提供的一个可能的解释是，在非常年轻和非常年长的人身上可以测量到的优势，在测试处于认知能力高峰期的年轻成年人时往往会消失。
One potential explanation offered by the researchers is that advantages that are measurable in the very young and very old tend to fade when testing young adults at the peak of their cognitive powers.
在妊娠期间和幼儿期缺乏碘摄入，可导致幼儿的认知和运动发育受损。
A lack of iodine intake during pregnancy and early childhood results in impaired cognitive and motor development in young children.
事实上，最新一期的读者文摘刊登了一篇文章，就是专门讨论幽默对大脑化学物质的影响及其改善记忆和提高认知能力的功能。
In fact, the most recent Readers Digest ran an article on its effects on the brain chemicals and how it improves memory and cognitive functions.
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