Deep in your memory, your brain has created a playlist of music from your teenage years. Even though life has moved on, hearing that music now likely still brings up some really powerful emotions.

Why?

Well, as with anything to do with the brain and with emotions, it’s hard to say for sure. But it’s likely a bit to do with evolution, and a bit to do with some key neurological changes that occur in the teenage years.

Changing hormones supercharge the limbic system, which is the emotional centre of the brain. Teens become emotionally sensitive and susceptible to intense mood swings.

At the same time, we start to become less reliant on our parents.

This increasing independence accelerates the need to forge close relationships with peers. We need to learn very quickly how to interpret the emotions of others, and develop strong memories of things that are safe or unsafe.

Imagine the world of a prehistoric teenager. No longer a child wholly dependent on their parents, the adolescent feels an instinctive drive to explore new territory and strike out on their own.

Away from their family’s protection, survival now hinges on bonds with peers.

Going it alone is fraught with danger. Belonging to a group becomes a matter of life or death.

The teen finds a new........

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