2/4. Sarah and Brian [text removed] are at their wits' end with their aggressive, uncontrollable five-year-old son [text removed]. He has been repeatedly sent home from school and faces permanent exclusion. When they visit clinical psychologist Tanya Byron, her devastating assessment forces them to learn new ways of encouraging him to behave well.
(Next programme follows at 7.30pm on BBC3) (First shown on BBC3)