The study also found the earlier people learn a second language, the greater the effect.

　　A team led by Dr. Andrea Mechelli, from University College London (UCL), took a group of Britons who only spoke English. They were compared with a group of “early bilinguals (通两种语言的人)” who had learnt a second language before the age of five, as well as a number of later learners.

　　Scans showed that grey matter density in the brain was greater in bilinguals than in people without a second language. But the longer a person waited before mastering a new language, the smaller the difference.

　　“Our findings suggest that the structure of the brain is changed with the experience of learning a second language,” said the scientists.

　　It means that the change itself increases the ability to learn.

　　Professor Dylan Vaughan Jones of the University of Wales, has researched the link between bilingualism and maths skills. “Having two languages gives you two windows on the world and makes the brain more flexible(灵活的).” He said, “You are actually going beyond language and have a better understanding of different ideas.”

　　The findings were matched in a study of native Italian speakers who had learned English as a second language between the ages of 2 and 34. Reading, writing and comprehension were all tested. The results showed that the earlier they started to learn, the better. “Studying a language means you get an entrance to another world.” explained the scientists.

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