“…Normative conflict, then, can take a range of forms. Norms can change on the basis of adopting different roles (Biddle, 1986); norms of competing groups and changes in group composition over time (e.g., Sherif & Sherif, 1967); and conflict between perceptions of general group members and deviants who effectively redefine the group (e.g., Chan, Louis, & Hornsey, 2009;Warren, 2003). Individuals in the group, and subgroups from within the larger group, often have differing notions regarding the group's identity, which manifest in their behavior (Hornsey, 2006;Postmes, Baray, Haslam, Morton, & Swaab, 2006).…”