The Social Chameleon

Why we become different people around others

Ever noticed how you seem to become a completely different person depending on who you're with? Around your friends, you might be the loudest in the room, effortlessly making everyone laugh. With your family, you become quieter and more reserved, perhaps reverting to a version of yourself you thought you had outgrown. Yet among strangers, you might find yourself surprisingly confident, striking up conversations with people you would never normally approach. None of these versions necessarily feels unnatural. Although we rarely consciously change our personalities, our behaviour, confidence, and even self-perception can shift depending on who we are with. So, how much of our identity is truly our own? And is there really one authentic version of ourselves?

We tend to think of personality as relatively stable: a collection of characteristics that define who we are. Yet, research in social neuroscience suggests that our sense of self is more flexible than we might imagine. Our behaviour is often influenced by our environment as we unconsciously adapt to the expectations of those around us. This can be understood through Social Identity Theory, which proposes that our sense of self is partly shaped by the groups we belong to and the relationships we form. The expectations associated with these groups can influence how we see and present ourselves. 

A study used functional magnetic resonance imaging (fMRI) to investigate how the brain responds to anticipated social acceptance and rejection. Researchers found increased activity in parts of the brain involved with the reward system and understanding other people's thoughts and intentions. These findings suggest that anticipating social approval activates brain regions associated with reward and social cognition. This may help explain why we adapt our behaviour around people whose acceptance and approval we value.

The people around us can also influence how comfortable we feel expressing ourselves. Studies found that the presence of trusted individuals can reduce the brain and body's response to stress, making challenging situations feel more manageable. The amygdala, which helps process emotional information, and the prefrontal cortex, which contributes to emotional regulation, play important roles in these responses. This may explain why we feel more relaxed and confident around certain people, but more reserved or self-conscious around others. Our social surroundings can therefore shape which aspects of our personality we feel comfortable expressing.

Perhaps the question is not which version of ourselves is the real one, but whether we need just one. The person who is loudest with friends, quieter around family, and unexpectedly confident with strangers is not three different people, but one person expressing an identity shaped by their relationships and environments. Maybe authenticity is not about behaving the same way around everyone, but recognising that each version is equally genuine. So, the next time you find yourself acting differently depending on who you are with, do not ask which version is the real you. Consider that they might all be.

Illustration by Tessa McCormick