It caused heated debates, and for a long time, it has had a rather limited impact on professional treatment systems (Coldwell and Heather, 2006). Recently, in many European countries (Klingemann and Rosenberg, 2009; Klingemann, 2016; Davis et al., 2017) and in the USA (Coldwell, 2005; Davis and Rosenberg, 2013), professionals working with clients with severe […]