Discordant knowing: A social cognitive structure underlying fanaticism.

= 3,277), we examined whether discordant knowing-felt knowledge about something that one perceives as opposed by most others-underlies fanaticism. Across multifaceted approaches, experimentally manipulating participants' views to fall under this framework (e.g., "I am certain about X, but most other people think X is unknowable or wrong") heightened indicators of fanaticism, including aggression, determined ignorance, and wanting to join extreme groups in the service of these views. Additional analyses found that this effect occurs via threat-based mechanisms (Studies 1-7), can be intervened on to prevent fanaticism (Study 2), is conditional on the potency of opposition (Study 3), differs from effects on extremism (Study 4), and extends to mental representations of the self (Study 5). Generalizing these findings to real-world contexts,…