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From VOA Learning English, this is the Health Report in Special English. A new study adds to evidence suggesting that being bilingual is good for the brain. In the study, older adults who have spoken two languages since childhood showed better mental skills than those who speak just one language. Earlier studies showed that bilingualism seemed to favor the development of these heightened skills. The authors of the new study say their findings provide evidence of that cognitive advantage among older, bilingual adults. “What is the functional basis of this advantage? Is it because they activate different parts of their brain that are typically used for doing cognitive control tasks? Or is it because they use their brain more efficiently?” Brian Gold was the lead author of the study. Dr. Gold is a neuroscientist at the University of Kentucky College of Medicine. In the study, the researchers asked people to sort colors and shapes in a series of simple exercises. Dr. Gold and his colleagues used brain imaging to compare how well three groups of people switched among these exercises. The groups were bilingual seniors, monolingual seniors and younger adults. The imaging showed different patterns of activity in the frontal part of the brain, in an area used for processing such tasks. “We found that seniors who are bilingual are able to activate their brain with a magnitude closer to young subjects. So they don’t need to expend as much effort, and yet they still out-perform their monolingual peers, suggesting they use their brain more efficiently.” | 
