Keeping up boosts brain power
KEEPING up with the Joneses makes your brain grow. It’s the main reason why our grey matter has tripled in size over two million years.
For cavemen realised they needed to compete against each other to survive, say scientists.
Early ancestors who lived in bigger groups saw their brains grow faster than those in more isolated populations.
As a result of this, says the study by the University of Missouri in the journal Human Nature, human brains developed fastest of all creatures.