Does bilingualism have an effect on the functioning of the brain?
     
      A variety of studies have examined the brains of bilinguals. A frequently asked question is whether a bilingual’s brain functions differently compared with a monolingual’s brain? How is language organized and processed in the brain of a bilingual compared with a monolingual? One study indicated that a language learned early, but not maintained, is dormant in the brain. However, other studies have not replicated this finding. Therefore, no conclusion is currently poosible.

     In most right-handed adults, the left hemisphere of the brain is dominant for language processing. Recent reviews tend to suggest that monolinguals and bilinguals are little different from each other in use of right and left hemisphere of the brain. The left hemisphere tends to dominate strongly language processing for both monolinguals and bilinguals. There is currently no strong evidence that bilingualism has negative effects on the everyday functioning of the brain. In terms of efficient and effective use of the brain, storage in the brain and processing in the brain, bilinguals do not seem particularly different from monolinguals.