“…The programme is based on the guiding behaviour change principles of applied behaviour analysis, operant conditioning, social learning theory, positive behaviour support, and antecedent behaviour manipulation (Taylor and Biglan, 1998). Signposts has already proven both efficacious and effective in two large RCTs for families with children with intellectual disability and challenging behaviour (Hudson et al, 2003(Hudson et al, , 2008. The efficacy for utilising such theoretical approaches to the treatment and prevention of challenging behaviour problems in children with brain injury has been demonstrated in previous ABI research (Braga et al, 2005;Feeney and Ylvisaker, 2003Gardner et al, 2003;Mottram and Berger-Gross, 2004;Wade et al, 2006a, b, c).…”