“…The disruptive behaviour of the adolescent inpatients that were examined was categorised according to the framework of Frick et al (), and included aggression (i.e., homicide attempt, assault, robbery, physical abuse, sexual offences, threatening someone), oppositional behaviour (i.e., disobedient, doing things their own way, stubbornness), status offences (i.e. running away, truancy, substance usage), and property violations (i.e., selling drugs, lying, possession of weapons, stealing, setting fires, vandalism, fencing stolen goods, traffic offences; De Boer, Boon, Verheij, & Donker, ; De Boer, Van Oort, Donker, Verheij, & Boon, ; Frick et al, ). The categories of disruptive behaviour were used to compare the subgroups.…”