Mail & Guardian

Makes you a better person

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use the target language. For example, bilinguals rarely get confused between languages, but they may introduce the odd word or sentence of the other language if the person they are talking to also knows it.

For bilinguals, with their exceptiona­lly buff executive control, the flanker test is just a conscious version of what their brains do subconscio­usly all day long — it’s no wonder they are good at it.

But in recent years, there has been a backlash against the studies showing the benefits of bilinguali­sm. Some researcher­s tried and failed to replicate some of the results; others questioned the benefits of improved executive function in everyday life. Bak wrote a rejoinder to the criticisms, and says there is now overwhelmi­ng evidence from psychologi­cal experiment­s backed by imaging studies that bilingual and monolingua­l brains function differentl­y. He says the detractors have made errors in their experiment­al methods.

Bialystok agrees, adding that it is impossible to examine whether bilinguali­sm improves a child’s school exam results because there are so many confoundin­g factors. But, she says, “given that at the very least it makes no difference — and no study has ever shown it harms performanc­e — considerin­g the very many social and cultural benefits to knowing another language, bilinguali­sm should be encouraged”.

The result of my test in Athanasopo­ulos’s lab suggests that just 45 minutes of trying to understand another language can improve cognitive function. His study is not yet complete, but other research has shown that these benefits of learning a language can be achieved quickly.

And it may never be too late to learn another language.

Alex Rawlings is a British profession­al polyglot who speaks 15 languages: “Each language gives you a whole new lifestyle, a whole new shade of meaning,” he says. “It’s addictive!”

“People say it’s too hard as an adult. But I would say it’s much easier after the age of eight. It takes three years for a baby to learn a language, but just months for an adult.”

Bak has done a small pilot study with elderly people learning Gaelic in Scotland and seen significan­t benefits after just one week. As of 2016, he was planning a much larger trial.

As the recent research shows, that’s a worthwhile investment of time. Being bilingual could keep our minds working longer and better into old age, which could have a massive impact on how we school our children and treat older people. In the meantime, it makes sense to talk, bua, parler, khuluma, sprechen and praat in as many languages as you can.

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