“…The individual may become increasingly socialized into this group (Silke, 2008; Dalgaard-Nielsen, 2010) by face-to-face contact or internet “echo rooms” (Geeraerts, 2012), while becoming relatively isolated from wider society, including his or her previous social network. The radical group, with its “high entativity” (coherence) and extreme, clear, and simple view of the world (Savage and Liht, 2008; Liht and Savage, 2013), perhaps expressed in terms of a “sacred canopy” of religious beliefs (Berger and Luckmann, 1967; Griffin, 2012), may provide a sense of certainty (Hogg, 2012) about the world, the future, and the self (and even about life after death in some cases! ).…”