peer pressure

"But it's still present, because in the '90s, there was still, of course, the peer pressure from the parents to, I don't know, just start a diet," he says.

The headteacher said issues with social media had occurred with children as young as seven, in Year 3, while peer pressure for parents to give their children smartphones was commonplace by Year 5.

He said he also said he believed Disney had "succumb to peer pressure on political correctness, which has now given top dwarf actors less work".

Ms Owen said graduated driving licences would protect new drivers from peer pressure by stopping them from carrying peer-aged passengers.

She said parents felt peer pressure to buy smartphones for their children because it was becoming the norm for them to have one.