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Bilingual babies' vocabulary linked to early brain differentiation
Date:8/28/2011

ra, lead author and a postdoctoral researcher at UW's Institute for Learning & Brain Sciences.

"When the brain is exposed to two languages rather than only one, the most adaptive response is to stay open longer before showing the perceptual narrowing that monolingual infants typically show at the end of the first year of life," Garcia-Sierra said.

To see if those brain responses at 10-12 months related to later speaking skills, the researchers followed up with the parents when the babies were about 15 months old to see how many Spanish and English words the children knew. They found that early brain responses to language could predict infants' word learning ability. That is, the size of the bilingual children's vocabulary was associated with the strength of their brain responses in discriminating languages at 10-12 months of age.

Early exposure to language also made a difference: Bilingual babies exposed to more English at home, including from their parents, other relatives and family friends, subsequently produced more words in English. The pattern held true for Spanish.

The researchers say the best way for children to learn a second language is through social interactions and daily exposure to the language.

"Learning a second language is like learning a sport," said Garcia-Sierra, who is raising his two young children as bilingual. "The more you play the better you get."


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Contact: Molly McElroy
mollywmc@uw.edu
206-543-2580
University of Washington
Source:Eurekalert  

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