Here is another study on the benefits of studying another language.
“If you have two languages in your brain, you need a way to keep them straight, otherwise you might say the wrong thing,” she said. It’s one of the things that often goes wrong with people suffering from dementia. They can no longer control their speech.The frontal lobes, which control planning and other high-level functions, are also used in language. Research has found exercising that part of the brain can help build up a “cognitive reserve,” which can stave off dementia.”
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