The overarching aim of this work package is to unpack the interpersonal, intragroup, and intergroup factors that form the mutually reinforcing cycle of rejection, radical group identification, and support for radicalised belief systems and behaviours. This Work Package will help us understand how individuals experience injustice, grievance, alienation and polarising influences within certain groups contexts, examining layers of influence between individuals, within groups, and between groups. This will involve investigating marginalisation, group identification, and maintenance of identity, using several designs and approaches.