A group mentality is a core part of conspiracy theories. The narrative of conspiracy theories often focuses on an “intergroup context where a powerful out-group threatens the well-being of the perceiver’s fellow in-group members”. People are likely to become more entrenched in their groups through conspiracy theory believe, as they develop mistrust towards other group and a collective narcissism carrying their belief that their group alone has access to the truth.
[P1] Conspiracy theories are likely to appeal to certain groups. [P2] Therefore, members of these groups are then more likely to believe in conspiracy theories because of their group mentality.