Have you ever felt like a slightly different version of yourself when speaking another language? Maybe you hesitate more before making a decision. Or maybe the opposite: you’re suddenly more outgoing, more willing to joke, more direct. You say things you wouldn’t normally say. Or you struggle to say things you know you feel.
Well, here’s the good news: you’re not imagining it.
There’s a growing body of research suggesting that language doesn’t just shape how we communicate, but also how we think, feel, and present ourselves. And even if the findings are a lot more nuanced than a simple “yes” or “no,” it’s still something worth taking a look at!
Short answer? Not exactly. At least, not in the way it might feel.
There’s no clean personality switch happening in your brain when you move from one language to another. You don’t suddenly become more extroverted, or cold, or self-confident, or more agreeable in any permanent sense. But… it can absolutely feel like you do.
A well-known study by psychologist Jean-Marc Dewaele found that around two thirds of multilinguals feel like a different person when switching the language they’re speaking.
That’s no small number, and it tells us something very important. The experience is real. Even if the explanation isn’t as simple as “new language = new personality.” Your core personality doesn’t change, and you surely don’t become someone else. What’s actually changing is how your personality is expressed, that is, how certain traits show up.
Think of it more like this: your personality has multiple layers, and language can act like a filter that highlights some traits and mutes others.
If language were just a communication tool, none of this would happen. You would simply translate thoughts from one language to another and carry on.
But it’s not like that. Because language is tied to memory, culture, emotion, and social expectations. And this means that when you switch languages, you’re not just changing the words you use. You are stepping into a slightly different mental and social environment.
There are three main factors at play here. Let’s go over them.
Your native language is where everything started. It’s tied to childhood, family, early experiences, first conflicts, first friendships, and many other memories and experiences. That’s the language you used to label and process emotions. And because of that, it tends to feel more intense and trigger stronger emotional reactions.
A second language, on the other hand, especially one learned later in life, often lacks that depth. It carries less emotional weight and can feel more neutral, even slightly distant.
That distance has some interesting effects:
So, as you can see, the emotional gap doesn’t change your core personality, but it can change how freely certain parts of it come through.
Language doesn’t exist in isolation. It’s tied to culture and brings with itself a series of expectations about how people are supposed to behave.
Some languages push you toward directness. Others reward subtlety. Others require you to constantly signal respect, hierarchy, or familiarity. You might not even consciously think about it, but your brain? It does pick up on these patterns very quickly.
It’s where the concept of cultural frame switching comes in.
Research by Hong, Morris, Chiu, and Benet-Martínez (2000) shows that bilingual people can shift between different cultural mindsets depending on the language they’re using. Which means:
Not because you’re pretending, but because you’re unconsciously aligning with what feels appropriate in that specific context.
This is the most simple and least theoretical explanation. But it’s also the most important.
If you are not comfortable in a language and can’t fully express yourself, your personality will feel constrained too. That means that you might:
There’s even another classical pattern. People who are naturally argumentative or expressive in their native language often become much more agreeable in a second language. Simply because arguing actually requires nuance.
It’s not a personality shift. It’s a limitation. But from the outside, it can look like you’ve become a different person.
Now let’s get more specific. And more messy, because the research here doesn’t point in one single direction.
Sometimes, yes. Probably.
At least, that’s what a study by Ramírez-Esparza and colleagues (2006) found out. When given a questionnaire, bilingual people scored higher in extraversion when answering in English (their second language) compared to Spanish (their native language).
But here’s the twist. Other studies have found the exact opposite.
So, what’s going on?
A useful way to think about it is this: a second language can lower the stakes. It’s not emotionally loaded, so you might worry less about judgment. And that can make you more willing to speak up, try things, and even embarrass yourself a little. Plus, if you learned that specific language while studying abroad and socializing, you might associate it with openness and confidence.
It’s not that you become more extroverted. You just temporarily lose some of the filters that usually hold you back.
This is actually one of the most consistent findings across research. People tend to feel:
There’s even evidence that decision-making becomes more rational when done in a foreign language. Studies have found, indeed, that people are less prone to emotional biases when thinking in a second language. And that has real implications. It means you might handle conflict more calmly, discuss sensitive issues with less anxiety, and make more calculated decisions. But it can also feel like something is missing. Like you’re not fully “there” emotionally.
Yes. And this is where perception really comes into play.
There’s research showing that bilingual people are perceived differently by others depending on the language they use and not just how they feel. Take one study involving Cantonese-English speakers in Hong Kong: participants were rated as more assertive and open when speaking English compared to Cantonese.
And that often depends on the language itself. Some languages have built-in systems of politeness or formality. When speaking them, you may:
But, which version is the “real” one? The honest answer is: both. Because you’re not completely changing. You’re just seeing different pieces of the same personality shaped by context, language, and interaction.
This is an important distinction that often gets overlooked. And where things get interesting. For real.
A language isn’t just something you learn. It’s something you live in.
Just think about where and how you learned your second language:
The contexts matter. If you associate a language with freedom and exploration, you may feel more open and extraverted when using it. On the contrary, if you associate it with formal situations, you may become more reserved.
To put it simply, as psycholinguist François Grosjean says: bilingual people are not two monolinguals in one person. They are one system that adapts to context. And language is just the trigger.
We can say that it changes it. Still, it doesn’t completely remove it.
At lower levels, the shift can feel more frustrating. You are like a reduced version of yourself: less precise and expressive. Your own personality might seem “smaller” in a sense.
At higher levels, on the other hand, something interesting happens. You regain your full expressive freedom, but you also gain more flexibility. This means that you’re not just compensating for limitations. You are independently choosing how to express yourself. Some multilinguals describe this as having access to different “modes”:
And switching from one to the other often becomes intentional rather than accidental.
At this point, the answer is clearer. But also less simplistic.
Learning a new language doesn’t change who you are. But it does reshape how your personality shows up in the world by affecting:
Over time, these shifts can feel deep enough to question your sense of identity. And, if you expect consistency across all situations, it can feel unsettling. Like you’re losing control over who you are. But if you see your personality as something flexible, it starts to look more like an advantage: you’re not losing yourself but expanding your range.
And that can be incredibly useful, not just linguistically, but personally.
There’s no better place to learn it than surrounded by it every day in Italy!
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