There’s
a common misconception that is not possible, or practical, to learn a new
language after infancy. It’s true that toddlers who are raised bilingual
display increased cognitive development, including more creativity and better
problem-solving skills, than monolingual children. It’s also true that
acquiring a language as an adult requires significantly more effort than
picking it up as a toddler. While some of the cognitive benefits are less
attainable as we age, there is no magical age at which you lose your ability to
learn a language. Even late in life, there is value in learning a new language.
Acquiring a language later in life can literally
grow your brain. A
study conducted by a team at Lund University focused on the cognitive effects
of language learning on a group of military-aged participants. After three
months of intensive study, the Arabic, Russian, and Dari students at the
Swedish Armed Forces Interpreter Academy were given MRI scans that revealed
specific parts of the brain had grown in size. The results showed growth in the
hippocampus, a structure in the brain responsible for developing new knowledge
and consolidating short-term memory into long-term memory.
While
the participants who had already learned two languages from birth showed more
advanced proficiency in their new language of study, all participants, regardless
of age and linguistic background, exhibited these benefits. And the benefits
don’t stop there: they last throughout your life, benefiting you through the
aging process.
Bilingualism delays the effects of aging, and not
just in people raised bilingual. Another study revealed that bilingual Alzheimer
patients were diagnosed with the disease an average of four years later than
their monolingual counterparts. In a newer experiment, they are using CT scans
to examine the brains of dementia sufferers. All of the subjects were the same
age and displayed the same cognitive level, but the physical effects on the bilinguals’
brains were more advanced.
The
bilingual brain is able to compensate and function at the same level despite
more advanced degradation. Learning a new language later in life exercises your
brain, effectively staving off some aspects of age-related decline.
While learning a new language may take considerably
more effort for adults than infants, the benefits (cognitive, communicative,
and career-wise) outweigh the costs.
Thanks to Transparent Language
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