Being bilingual can help keep your brain in good condition

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Learning and understanding a new language is one of the most challenging things that your brain can do. But as well as the advantage of acquiring another language, it appears that the effort of giving your brain a good workout today by being bilingual could keep it in better condition in later life.

Research led by Dr. Daniela Perani, a professor of psychology at in Milan, found that people who speak two or more languages seem to weather the ravages of Alzheimer’s disease better compared to people who have only mastered one language. Alzheimer’s is a progressive mental deterioration that can begin in middle or old age due to generalized brain degeneration.

The study involved 85 people with Alzheimer’s – half of whom spoke both German and Italian and half who spoke only one language. The researchers found that bilingual patients had greater connectivity in key brain areas. This was especially in the part of the brain that governs “executive control” – a set of necessary behavioral cognitive processes that include problem-solving, working memory, reasoning and attentional control. The study also noted that the bilingual Alzheimer’s patients showed less severe symptoms of the disease.

The study concluded: “Our findings suggest that the effects of speaking two languages are more powerful than both age and education in providing a protection against cognitive decline.”

Bilingualism and the brain

Although Alzheimer’s disease is currently incurable, the study supports a popular theory that people who have higher levels of education function longer with little manifestation of the illness. Part of the reason why bilingual brains may be better at resisting Alzheimer’s could be due to a lifetime of switching between languages daily.

Learning and speaking more than one language changes how the brain carries out tasks that require focus and concentration on a certain piece of information without being distracted. It can also increase the density of white matter (connections) in the brain, meaning that there are more connections between brain parts, thus making this part of the brain more resistant to degeneration.

This is supported by a study conducted by a team led by Professor Ana Inés Ansaldo at the , which suggests that bilingual people have more robust and more efficient brains compared to those who only speak one language. This is one of the reasons why a bilingual brain can be a buffer against aging and dementia.

They recruited elderly people, half of whom spoke only one language and the other half who had learned a second language between the ages of 11 and 18. All performed equally well on a task that involved focusing on an object's color while ignoring its position, but brain scans revealed a big difference in how they processed the task.

“While bilinguals were recruiting very specific brain areas and a small number of areas to perform the task, monolinguals were recruiting a much larger number of areas that were consuming much more resources. And the networks they were using were very, very complex,” says Professor Ansaldo. “That led us to think that the bilingual brain was more efficient in terms of the amount of resources that bilingual people require to do complex tasks as opposed to the monolingual brain.”

The study concludes that bilingualism shapes the brain in a different way or how people approach complex tasks. It could be because bilinguals must inhibit the language they are not using to focus on the one that they are using.

Read our other blog post on about how language learning can help your mental health and wellbeing.

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  • A group of young adults smiling together

    The importance of diversity and inclusion in your curriculum

    By James Warwick

    Systemic racism has a negative impact on the education of many students across the world. This can start as early as preschool.

    Studies have also shown a correlation between teacher expectations and student achievement. Worryingly, these expectations can be negatively affected by racial prejudice.

    Education should be a powerful force for social change

    In recent history, various events have sparked a global uprising against systemic racism and discrimination. Protests have touched every part of society, from arts to sports to politics to education. A key demand is for real, structural change to society so that the lives of Black, Indigenous, People of Color (BIPOC) are valued as they should be.

    Mutuma Ruteere, former UN Special Rapporteur on contemporary forms of racism, “education has a central role in creating new values and attitudes and providing us with important tools for addressing deep-rooted discrimination and the legacy of historical injustices.”

    Promoting diversity and inclusion

    As we look to the future, and imagine a world we want to live in, it’s important to examine how we create these materials and courses. Our aim is to ensure that what we produce is bias-free, inclusive and actively anti-racist.

    Education will always remain a key instrument for disarming ignorance and bigotry.

    We set up an Employee Resource Group (ERG), which has created a set of principles for app authors and editors. The group’s aim is to lay the groundwork for courses that reflect all parts of a diverse society.

    The guidelines were developed by our BAME and African American ERGs. Ade Gachegua led the project alongside internal and external consultants, including the author of the , Dr. Jason Arday.

    Challenges to overcome together

    The guidelines identified five main challenges and suggested the following ways to overcome them:

    1. Underrepresentation

    Are people from a BIPOC background equally represented in educational products? The guidelines recommend that people of different ethnicities should be included in all course material and portrayed as equal to one another.

    Choosing texts and pictures which promote racial equality is also important.

    2. Exaggerated negative associations

    Negative associations are exaggerated when unfavorable characteristics or traits are linked to people of minority ethnicities again and again. This is how stereotypes are built and reinforced in the minds of learners.

    We can take steps to prevent this by choosing our language carefully, avoiding racist texts and refuting any suggestion that behavior is linked to one ethnicity more than another.

    3. Limited positive associations

    Stereotypes of all kinds can be harmful - even positive ones. The guidelines recommend including people from minority ethnicities as positive role models in all contexts, not just the ones they might be traditionally associated with.

    This way, we broaden our learners’ horizons and show them that they have the potential to succeed in any field, regardless of their background.

    4. Missing stories

    When it comes to contributing to public life, individuals from minority ethnicities are often overlooked. For example, when it comes to history, educators tend to disregard contributions from ethnic minorities.

    It’s not because their contributions are less significant, but because the long history of racism has led to their contributions to public life being more limited and deliberately overlooked.

    It’s important that educational materials include these ‘missing stories.’ This helps learners to develop a richer and more diverse view of society and its participants.

    5. The ‘problem’ frame

    Educational texts often speak about people from BIPOC backgrounds as helpless victims of their ‘own’ disadvantage. Instead, we need to view racism as a systemic, social and institutionalized problem, external to the individuals that it affects.

    Authors and editors use the guidelines and an accompanying checklist to ensure that our courses reflect all parts of a diverse society. This means that you can be confident that the classroom materials you’re using to teach your students will empower each and every one of them to reach their full potential.

    You can apply this checklist to your own teaching and resources to help you ensure that what you are covering is diverse and inclusive. Making for a more positive classroom experience for all.