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How infants benefit from a bilingual home

The jury is still out on the long lasting effects of learning two languages in the home.

People have credited the so-called bilingual advantage with providing a variety of long-term cognitive benefits, although some studies question whether the advantage exists at all. Meanwhile, researchers have observed some of the alleged benefits of bilingualism in preverbal children.

Based on the findings of their new study, they have concluded that living in a bilingual home helps children develop greater flexibility in acquiring new information, even before they learn to speak at all.

The study, from Anglia Ruskin University (ARU) in Cambridge, United Kingdom, appears in the journal Royal Society Open Science. The hypothesis under investigation is whether the more complex linguistic environment in a bilingual home prompts an infant to develop the ability to switch their attention more rapidly between different stimuli.

Dean D’Souza, who is a senior lecturer in psychology at ARU, is the lead author of the study. D’Souza and colleagues write:


“We propose that exposure to more varied, less predictable (language) environments drive infants to sample more by placing less weight on consolidating familiar information in order to orient sooner to (and explore) new stimuli.”


Attention testing

The researchers analyzed eye tracking data from 102 infants between the ages of 7 and 9 months. Half of the infants were from bilingual homes. The researchers considered a home bilingual if the child was exposed to two or more languages daily and heard their first language no more than 75% of the time. The other 51 infants served as a control group.The researchers showed each infant a series of pictures and observed their target of attention using a Tobii Pro TX300 remote eye tracker and a camera.

What the researchers found

The results of the image tests showed that infants from bilingual homes switched focus more often than those in the control group, suggesting that their home environment had caused them to become more adept at handling rapidly changing stimuli. The study also found that these children were significantly faster than the control group at letting go of one image and refocusing on a new one.

“Is mere exposure to bilingual environments enough? We suggest that it is,” conclude the study authors. Not only that, they say, but also “because the infants had not yet begun to speak, it tells us that mere exposure to a second language is sufficient to observe a difference.”

As to exactly why this happens, D’Souza suggests, “Bilingual environments may be more variable and unpredictable than monolingual environments — and, therefore, more challenging to learn in.”


Read more here or download the scientific report here.

Autor: Robby Berman   Quelle: Medical News Today, 6th March 2020
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