Researchers have found preliminary evidence that growing up bilingual increases the brain’s capacity to deal with complex issues. Here’s an excerpt from the NPR story, followed by the audio:
Ellen Bialystok, a psychologist from York University in Toronto, says the reason lies in the way the bilingual mind uses language.
“We don’t really know very much in psychology,” said Bialystok. “But the one thing that has been so overwhelmingly proven, that I can say with great certainty, is this: For a bilingual who really has two good languages that they use, both of them are always active.”
In other words, no matter what language a person is speaking at the moment, both languages are active in the brain.
“The evidence is very dramatic. Even if you are in a context that is utterly monolingual, where you think there is absolutely no reason to think about Chinese or Spanish or French, it is part of the activated network that’s going on in your brain,” she said.
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