Professor Stephen Pilling told Daybreak that children with conduct disorder require a "different way of parenting".
He added that families are not to blame when children are challenging, but parents do need help to get the best out of their child.
More top news
Three men who risked their lives to help save hundreds of dogs trapped by a fire said they did not even think about their own safety.
Billie Reid said his daughter Melissa has been struggling to cope as her bid to move to a Scottish prison is processed.
The number of children in care has increased to its highest level for nearly 25 years, the Government's spending watchdog has said.