<Li> psychological (feeling excluded, lonely, devalued, labelled, disempowered, living up to people's negative expectations) </Li> <P> Challenging behaviour may also simply be a means of communication . A lot of the time, challenging behaviour is learned and brings rewards and it is very often possible to teach people new behaviours to achieve the same aims . Behaviour analysts have focused on a developmental model of challenging behaviour . </P> <P> Experience and research suggests that what professionals call "challenging behaviour" is often a reaction to the challenging environments that services or others create around people with developmental disabilities, and a method of communicating dissatisfaction with the failure of services or others to listen for what kind of life makes most sense to the person, especially where services or others create lifestyles and relationships that are centred on what suits them or the service and its staff rather than what suits the person . </P> <P> Challenging behaviour can often be viewed as a' behavioural equivalent' of a mental health problem . However, research evidence indicates that challenging behaviours and mental health problems are relatively independent conditions . </P>

Name the two ways a person can display challenging behaviour