An indepth scientific study into bilingualism which ends with the following conclusion. There is one very important advantage of learning other languages that I think beats any gains in cognitive control or delays in the onset of dementia. When you learn other languages you can then actually speak those languages, read those literatures, talk to new people in their native language, eaves-drop on their conversations on the bus, order off the menu, pick up that gorgeous stranger in the piazza.
In a recent paper published in Psychological Science, a team of psychologists led by Boaz Keysar at the University of Chicago found that forcing people to rely on a second language systematically reduced human biases, allowing the subjects to escape from the usual blind spots of cognition. In a sense, they were better able to think without style.
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