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Intelligence - nature or nurture? Researchers find a gene for intelligence and also that a bigger brain matters, yet other recent articles show how motivation affects learning.

Cognitive benefit of lifelong bilingualism

Older bilinguals expend less energy when performing a cognitive flexibility task. The findings suggest the value of regular stimulating mental activity across the lifetime. As people age, cognitive flexibility -- the ability to adapt to unfamiliar or unexpected circumstances -- and related "executive" functions decline. Recent studies suggest lifelong bilingualism may reduce this decline -- a boost that may stem from the experience of constantly switching between languages.
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