The Role of Self-dehumanisation in Radicalisation to Peaceful and Violent Political Activism
Taking the significance quest (Kruglanski et al., 2014) approach to radicalisation, this dissertation examined if self-dehumanisation could explain why some people turn to violent radicalism and others to peaceful activism to restore significance in life. I hypothesised that significance loss induces self-dehumanisation which subsequently warrants political violence. Study 1, a cross-sectional online study (N = 183), tested the mediating effect of self-dehumanisation on the relationship between significance loss and radicalism/activism. Study 2, an experimental online study with a between-subjects design (N = 264) where significance loss was manipulated using a recall task examined the causal links between significance loss and radicalism/activism, additionally testing the moderating effects of group vs. individual significance loss on this association. Study 1 demonstrated positive links between significance loss and peaceful activism, violent radicalism and self-dehumanisation. Dehumanising oneself was negatively related to peaceful activism; no support was found for its association with violent radicalism intentions. Study 2 showed the causal role of significance loss in enhancing peaceful activism and violent radicalism. The moderating effect of group vs. individual significance loss was not supported. This dissertation contributes to knowledge on the mechanisms of radicalisation, demonstrating self-dehumanisation’s activism-suppressing role for the first time.