Why creative self-expression makes sense from a scientifi c perspective

Unlike animals, humans evolved to use art and language as a mechanism to express interests and points of view without the need for violence. This powerful tool has led to countless celebrated works that have changed the world: from Shakespeare and Rennaissance masterpieces influencing early western society to successful campaigns driving public behaviour, such as those for HIV/AIDs prevention. But to understand its potential, we need to delve into the science behind self-expression.

Ancient patterns 

There’s a part of our brain referred to as the reptilian brain, which is common in other animals and responsible for instincts. So every time you feel threatened, this part of the brain releases hormones to alert you of the dangers and then reward you, if you successfully overcome the risk you were facing. This happens because this ancient part of the brain is obsessed with survival.

When the brain senses it’s in a vulnerable situation, it immediately releases the stress hormone cortisol, as if it was an alarm clock signalling the importance of getting away from that situation as soon as possible. To the brain, cortisol feels as startling as an early alarm at the weekend. And when the person jumps into action, either by confronting or abandoning the vulnerable condition they’re facing (fight or flight), the alarm stops and the brain rewards them with the release of feel-good chemicals in return for solving the situation. This release leads to emotions such as joy, calm, trust and sense of achievement.