This paper analyses the rise of radical movements and the design of counter-radicalisation policies. A group derives meaning from participation in identity-based activities and a forward-looking organisation provides a platform for these activities. The warning sign for radicalisation is cultural purification by the organisation, i.e. the screening out of moderates and exclusive recruitment of radicals. While this shrinks the club, it puts it on a growth path along which it becomes larger and more extreme over time. Conventional counter-radicalisation policies can backfire. The radicalisation mechanisms we identify can be disabled by mild anti-radical messaging and informational interventions that eliminate stereotypes.

中文翻译：

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激进化

本文分析了激进运动的兴起和反激进化政策的设计。一个团体从参与基于身份的活动中获得意义，而一个具有前瞻性的组织为这些活动提供了一个平台。激进化的警告信号是组织的文化净化，即筛选掉温和派并专门招募激进分子。虽然这缩小了俱乐部的规模，但它却让它走上了一条成长之路，随着时间的推移，俱乐部变得越来越大、越来越极端。传统的反激进化政策可能会适得其反。我们确定的激进化机制可以通过温和的反激进信息和消除刻板印象的信息干预来禁用。