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
Cameras caught planes having a rough ride coming into land, after days of storms across northern Europe which left nine people dead.
"Neither of us thought we would marry again but we are so happy", said Ted Wright, 90, as he married 81-year-old Joan Grant.
Blizzard-like conditions at times across central Scotland with up to 20cm of snow on the hills. Warning in force until 10pm this evening.