From the study of political science research proves that people can speak more than one language, they can be made to work, the more powerful the brain in processing fast and correct. And this is just one example.
The study of scientific research. Proving that Someone who can speak more than one language can make the brain more efficient than both processing speed and accuracy. This is just one example.
From research the science can prove that the people who can speak more than 1 language. Can make the brain function is more effective than the processing is fast and accurate.