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They have better "cognitive flexibility".
他們有更好的“認知靈活性”。
Older adults who have spoken two languages since childhood seem to have better cognitive flexibility -- meaning, they are better able to go with the flow in the face of a new or unexpected circumstance -- than adults who only speak one language, according to a Journal of Neuroscience study. The study involved having participants complete a cognitive flexibility task; while monolingual and bilingual adults were both able to complete the task, the bilingual adults did it more quickly and certain parts of their brains used less energy to do so.
根據一則神經系統科學的期刊研究，年紀大的人中，從孩提開始就會講兩種語言的人似乎有更好的認知靈活性，也就是說，和只會講一種語言的成人相比，他們在新的或者預期之外的情況下，表現得更加順其自然。在這一研究中，兩類人群都被要求完成一項考驗認知靈活性的任務。雖然他們都可以完成，但會講外語的人們完成得更快，而且他們大腦中的特定區域消耗了更少的能量。
