What is ‘challenging behaviour’?

Is it when N, age 9, breaks the school rule and runs down a corridor? 

Is it when N again runs down the corridor, crashes into M who falls very badly?

Is it when L, 15, stays at a friend’s house overnight despite knowing his parents have set a time for him to be home? 

Is it when J, 25, goes into a screaming tantrum over an outing being postponed by 20 minutes?

Is it when P, adult, drunk and angry about a perceived personal insult, decides to punish S by beating him up?

Is it when F, adult and angry about a perceived personal insult, organises a gang to punish D by beating him up?

All of these may be described as Challenging Behaviour of varying degrees. 

Should the circumstances be taken into account?  Should the situation be taken into account?  Should the consequences be taken into account? 

More discussion on this topic including the thorny issues of circumstances, situation,  consequences - difficulties caused by different definitions - plus Practical Activities, planned for Members Specials.