– The most noticeable trait is aggressiveness.

– They are often violent towards adults (parents, teacher/carer).

– He is characterised by impulsivity and a strong need to control others.

– Has positive attitudes towards violence.

– Cannot empathise with others.

– Has a markedly good/poor self-image.

– Boys tend to be stronger than others.

– Difficult to conform to rules.

– Often has such patterns already at home.

– Is more often involved in fights and is injured in fights.

– More often involved in vandalism or theft, reaches for alcohol, drugs.

– Is more likely to skip school.