Identity fusion predicts violent pro-group behavior when it is morally justifiable.

Identity fusion is a visceral feeling of oneness with a group that predicts extreme pro-group behaviors. However, the effects of fusion depending on the nature of such behaviors -violent versus nonviolent- and the factors that may incline strongly fused individuals to display them still remain unexplored. To fill this gap, we performed two correlational studies in which we examined whether moral beliefs regarding the justifiability of violence moderate the relationship between fusion with the family (Study 1), or with the country (Study 2), and willingness to engage in violent and nonviolent pro-group acts. Results showed that strongly fused participants were more willing to act violently than weakly fused participants, but only when their beliefs in the moral justifiability of violence were high. In contrast, their willingness to engage in nonviolent acts was not influenced by moral beliefs.