Commentary: Something old, something new: reflections on behavioural heterogeneity in conduct disorders and Klahr & Burt (2014)

The review by Klahr and Burt (this issue) is very welcome as it covers a condition that is the commonest in child and adolescent mental health, but one that is usually met with woefully inadequate availability of interventions despite an excellent evidence base of effective treatments. Antisocial behaviour in childhood is much researched in terms of cause and course, and the review covers two long‐standing ways of carving it up, and two newer ones. The term antisocial behaviour may be preferable to conduct disorder, as many of the studies described in the review did not use conduct disorder as an inclusion criterion, and whilst in ICD 10 conduct disorder includes oppositional defiant disorder ( ODD ), thus covering the majority of severely antisocial young children, DSM IV and V explicitly exclude ODD , thus leaving it with restricted usefulness when researching origins in younger children.