The role of religious fundamentalism and tightness-looseness in promoting collective narcissism and extreme group behavior.

The present study aims to understand the roles of religious fundamentalism and collective narcissism in predicting extreme behavior. It was hypothesized that religious fundamentalism may enhance collective narcissism and that this would in turn increase the tendency to endorse extreme behavior. It was also anticipated that perceptions of social tightness would moderate the indirect effect of religious fundamentalism on extreme behavior through collective narcissism. To test the hypotheses, we collected data from 788 members of Islamic religious groups in Indonesia (Male= 457, Female= 325), ages ranged from 17 to 52 (M= 25.14, SD= 8.49). Supporting the hypotheses, our findings demonstrated the validity of the expected pathways, confirming that it is important to consider the role of collective narcissism and tightnesslooseness when studying relationships between religious fundamentalism and extreme behavior. In particular, our findings demonstrate that there is a away for religious fundamentalists not to support for extreme behavior when they can have looseness culture, through which it can lower are low either in the level of collective narcissism or tightness.