ABSTRACT
The global threat of violent extremism (VE) has intensified in recent years, evidenced by a significant increase in violent incidents. Despite numerous theoretical and empirical explanations across disciplines, a lack of cross-fertilisation between these research domains has hindered the development of a comprehensive understanding of VE. To bridge this gap, this review integrates diverse lines of research into a comprehensive psychological model of VE, synthesising objective situations, subjective appraisals, and key individual psychological factors contributing to VE inclinations. We aim to develop a framework that more precisely demonstrates how these variables fit together, highlighting the added value of integration over piecemeal investigations. We specifically advocate for a multilevel approach that incorporates predictors from various levels of analysis to provide detailed mechanisms for how these variables relate to and complement one another. We further illuminate a multitude of mediation and moderation effects, some already tested empirically, while others await future research.
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