The primary effect of bilingualism for a child is enhanced cognitive flexibility and executive function, meaning their brains become more adept at problem-solving, multitasking, focusing, and switching between tasks, due to the constant practice of managing two language systems, which strengthens overall mental agility. This also leads to better language awareness, stronger memory, improved attention, and greater cultural understanding.
7 Bilingual children are also able to make new friends and create strong relationships using their second language—an important skill in our increasingly diverse society. Research has found that babies raised in bilingual households show better self-control,8 a key indicator of school success.
Being exposed to multiple languages enriches a child's vocabulary and language comprehension. Bilingual children often have a wider range of words to express their thoughts in both languages, making communication smoother and more effective.
Cognitive Benefits of Bilingual Education
Children who learn in a bilingual environment tend to have higher problem-solving skills, creativity, and critical thinking abilities. Research shows that bilingual individuals have an easier time focusing on tasks, solving complex problems, and adapting to new situations.
They tend to have better accents, more diversified vocabulary, higher grammatical proficiency, and greater skill in real-time language processing.
Let's explore the cognitive benefits of being bilingual backed by scientific research.
One of the defining features of bilingual language development is the ability to differentiate between and switch fluidly between languages. This is called code-switching. It is a natural and common phenomenon among bilinguals, serving various communicative functions and reflecting their linguistic versatility.
Enhanced Memory Systems
Specific memory advantages have been documented in experimental studies. Bilingual children demonstrated higher scores in native language proficiency (M = 95.6) and executive function (M = 89.2%) than monolingual children, indicating superior language and cognitive flexibility.
Various studies and research suggest that learning a second language promotes cognitive functions amongst children. The benefits include improved memory, enhanced multi-tasking abilities, impulse control, problem-solving, critical thinking skills and creativity amongst many others.
Their results showed that children in second and fourth grades in the bilingual program outperformed children in the English program on the trail-making task, an executive function task that has previously been shown to be performed better by bilingual than monolingual 8-year-olds (Bialystok 2010).
While language learning is a lifelong endeavor, individuals who begin dual language learning at a young age benefit from it. They may have higher executive functioning skills, more social understanding and awareness, and a long-lasting connection to their families and cultures.
A bilingual with typical development will have the same vocabulary growth milestones in their development with words in both languages counted towards their total vocabulary. They will be about 50% intelligible to an unfamiliar listener at age 2 and 75% intelligible to an unfamiliar listener at age 3.
Milestone 4: First Words (8-15 months)
Your child uses their first clear word with meaning. Bilingual babies may say their first word in either language — and that's perfectly normal.
Studies show that children who hear more child-directed speech that is slow, expressive, and clearly articulated develop stronger vocabulary, better self-regulation, and improved academic readiness. Research also confirms that the quantity and quality of early language exposure influence long-term outcomes.
Conclusion 3: Learning Two Languages Takes Longer Than Learning One; It Is Normal For Bilingual Children To Lag Behind Monolingual Children In Their Rate Of Single Language Development, And It Takes A Long Time To Catch Up.
In general, bilinguals face greater ambiguity during language processing because they consider similar-sounding words from two languages (instead of one) during comprehension and must choose between languages during production.
A Lifetime of Benefits of Learning a Second Language
It is clear that second language study offers many advantages for children in terms of improved communicative ability, cognitive development, and cultural awareness. It's never too soon to start your child on the path of second language acquisition, so start today!
We do have evidence, however, that bilingualism DOES NOT CAUSE any difficulties with language development. We know that because bilingual children do not have such problems any more frequently than do monolingual children.
The five “C” goal areas (Communication, Cultures, Connections, Comparisons, and Communities) stress the application of learning a language beyond the instructional setting.
The core discovery demonstrates that bilingual learning experiences have beneficial influence on children's cognitive ability development, including executive function and inhibitory control. The relation between bilingual learning experiences and children's cognitive ability is positive.
Cognitive Advantages
Bilingual children often demonstrate enhanced problem-solving skills, improved creativity, and greater cognitive flexibility. Whether through coordinate or compound bilingualism, the process of navigating multiple languages sharpens executive functions like memory, attention, and task-switching.
Because language is a vehicle to understand culture, speaking a second language and experiencing its culture allow students to better understand and appreciate other cultures. Accordingly, bilinguals are typically more welcoming of diversity, whether cultural or linguistic, than their monolingual counterparts.
Language delay red flags include a lack of babbling by 12 months, no single words by 16-18 months, no two-word phrases by 24 months, difficulty following simple instructions, limited eye contact, not responding to their name, or any loss of language skills, signaling a need for early evaluation by a professional like a speech-language pathologist.
D'Acierno also noted three types of bilingualism: compound bilingualism, coordinate bilingualism and sub-coordinate bilingualism. Individuals who learn two languages in the same environment so that they acquire one notion with two verbal expressions are compound bilinguals.
fMRI scans revealed that bilingual participants had increased connectivity between brain regions than monolingual participants, and this connectivity was stronger in those who learned their second language at a younger age. This effect was particularly strong between the cerebellum and the left frontal cortex.