Key takeaways:
- Code-switching is when your brain automatically combines the languages you know as you attempt to best express your thoughts
- Code-switching is a sign of neural flexibility and intelligence in multiple languages
- Code-switching follows specific rules and patterns that reflect the process is not chaos, but understanding
- You can accelerate towards code-switching by increasing your vocabulary and starting to do it intentionally at your current level
How Code-Switching Works
Have you ever found yourself saying something like, “Hoy estoy so tired.” Or maybe, “Je peux pas, I have to work.”
If that sounds familiar, congratulations!
What you’re doing is called code-switching! Code-switching is when someone mixes different words and expressions between different languages. This ability had been analyzed and debated for centuries. But current science suggests that code-switching is actually a sign of mastery, not confusion between languages.
Let’s see what code-switching looks like, how it was previously seen, and how you can get to be fluent enough to unlock code-switching.
Science Meets Language
If you’ve lived abroad or learned another language for a while, chances are you’ve developed your own personal lingo using all the languages you know.
You might start a sentence in English and finish it in French, or use a Spanish word just because it fits better. When you do that, it’s not because you forgot words. You’re actually doing something fascinating. Your brain is selecting the most efficient tool from its linguistic toolbox.
According to current psycho-linguistic research, this is called code-switching. The practice of alternating between languages in a single conversation, sentence, or phrase. And rather than it stemming from confusion or error, as was previously thought in psychology, it reflects how flexible your mind is!
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Your Brain’s Superpower
Neuroscientists have found that bilinguals constantly activate both languages in their brain.
When you speak, your brain chooses in milliseconds which word best expresses your thought depending on context, emotional nuance, or even social setting. So if you say “I’m dans la galère today,” it’s not that you forgot the English replacement, “in trouble.” It’s that your brain has instantly picked the most natural expression for the feeling you wanted to convey.
What Research Says about Code-Switching
For a long time, researchers believed that code switching was random, a linguistic chaos.
In America, forms of bilingual schooling were dismantled in the 1920s and families were told that if they raised their children bilingual, that they would grown up confused and less educated. That trend carried on for 60 years until New Yorker Shana Poplack began doing research with Puerto Rican bilinguals. Her groundbreaking research in social linguistics found that code-switching isn’t random at all. It actually functions within sets of rules.
Bilinguals and Grammar
Bilinguals follow the grammatical rules of both languages simultaneously when they switch. For example, most switches happen where the structures of both languages line up between phrases or clauses that aren’t in grammatical conflict.
Poplack called this The Equivalence Constraint. The constraint is that these changes happen when sentence structure lines up.
In both English and Spanish, standard sentence structures is “subject, verb, object” or “sujeto, verbo, objeto.” This allows for sentences like “Ella compró a car” since no grammatical rules are broken. This then becomes a little more complicated when adding adjectives, which come before the noun in English, but after the verb in Spanish.
Then the two options we’re left with are “Ella compró a red car” or even “She bought un coche rojo” in order to keep the noun and the adjective together.
So, even if you’re not consciously thinking about grammar, your bilingual brain knows exactly where the safe zones are for switching. And that’s why code-switching isn’t broken language. It’s actually grammatically precise.
Poplack also identified three main patterns. Tag switching, inserting little words or phrases such as, “you know”, “right”, or “pero.”
Code-Switching Patterns
Poplack also identified 3 Main Patters in code-switching:
- tag-switching: adding filler words like “you know,” “right,” and “pero”
- inter-sentential switching: switching languages between sentences
- intra-sentential switching: switching languages within the same sentence
These patterns show how deeply bilinguals control both systems.
It’s not chaos. It’s choreography.
Code-Switching Helps You Communicate Your Thoughts
Code-switching isn’t just about grammar. It’s also about identity.
Bilinguals use switching strategically to mark belonging, express emotion, add humor, or emphasize a point.
Before Poplack’s research, many people saw language mixing as sloppy. She proved the opposite. It shows high proficiency and deep awareness of both languages.
When you mix, you’re not breaking the rules. You’re mastering two rule books at once. So, next time you mix languages, do not feel guilty. It’s not a mistake. It’s your superpower!
It means your brain has adapted to navigate between two worlds, two cultures, and ways of thinking. And if you’d like to make those transitions smoother and feel more confident in both languages, MosaLingua can help you build vocabulary, practice real life conversations, and strengthen your bilingual brain.
Your Bilingual Brain Does This Automatically (Here’s Why) [VIDEO]
If you’d like to hear this topic explained by our teacher, Lisa, click the video below and subscribe to our channel.
If you’d like subtitles in any of the 6 languages we offer on YouTube, just click the gear in the top right corner and use this time as some code-switching practice.
How to Start Code-Switching
The key to start naturally code-switching is to reach bilingual proficiency in your target language. But that feels like a gargantuan task! So how can you make it faster?
1. Get Your Vocabulary Up
The best way to reach proficiency is to learn the 20% of vocabulary that you’ll use in 80% of situations. Maximizing your learning this way is called the Pareto Principle. And building that vocabulary up will get you to proficiency faster.
It’s also important that you pick words and sentences that you can use now without having to worry about digging into grammar and getting discouraged by the rules. All you need to know to start code-switching is general grammar rules like we talked about earlier: “subject, object, verb.”
MosaLingua is a great way to learn the 20% you need in no time at all. By learning just 10 vocab cards a day for a month, you can have 300 new words in your target language! We offer 11 different languages so you can accelerate no matter what language you’re trying to learn.
2. Start Code-Switching at Your Current Level
No matter what your level is, there’s no time like the present.
Instead of waiting for fluency to try talking, mix your language with English. Try replacing the words you know into your English sentences while you’re talking or watching something.
You can even try shadowing while listening to your target language and repeating after it.
That gives your mouth muscles practice with your new language as you repeat back what you heard. From there, you’ll be able to mix your languages together on your own while maintaining pronunciation in both languages.
By getting your brain to code-switch in the learning process, you’re forcing your brain to flex its capabilities in the moment.
As you rise in your fluency, you may notice this happening automatically. So if you start building those neural bridges today, that may increase your brain flexibility farther down the line!
Closing Thoughts
Code-switching is actually a skill that should be celebrated and curated.
It serves as a sign of knowledge and flexibility in your own thoughts. Not only does learning another language increase your flexibility in thought, it can also increase your ability to express yourself and your creativity in communicating your thoughts.
Don’t wait to get started! Start learning today, start speaking today, and build your skills over time!
Some day soon you may be code-switching as well.
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