Children at risk of "going off the rails" and descending into a life of crime can be spotted as young as two, according to the government's behaviour expert Charlie Taylor.
He said it was important to show the worse behaved children how to socialise as toddlers.
Giving young children proper boundaries at a such an age makes it easier for them them to learn how to behave. He said:
"Any child can go off the rails for a bit and what we need is a system that is responsive to them and helps them to get back on the straight and narrow.”
More top news
At least nine members of a school marching band were among the injured, according to local media.
Police investigating the disappearance of a British toddler in Germany more than 35 years ago have released an image of a suspect.
Lord Stevens said drones should be prohibited near sensitive sites like airports.