ABSTRACT This systematic review assesses the impact of mental health problems upon attitudes, intentions and behaviours in the context of radicalisation and terrorism. We identified 25 studies that measured rates of mental health problems across 28 samples. The prevalence rates are heterogenous and range from 0% to 57%. If we pool the results of those samples (n = 19) purely focused upon confirmed diagnoses where sample sizes are known (n = 1705 subjects), the results suggest arate of 14.4% with aconfirmed diagnosis. Where studies relied upon wholly, or in some form, upon privileged access to police or judicial data, diagnoses occurred 16.96% of the time (n = 283 subjects). Where studies were purely focused upon open sources (n = 1089 subjects), diagnoses were present 9.82% of the time. We then explore (a) the types and rates of mental health disorders identified (b) comparison/control group studies (c) studies that explore causal roles of mental health problems and (d) other complex needs.

中文翻译：

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心理健康问题和暴力极端主义的系统回顾

摘要 本系统评价评估了心理健康问题对激进化和恐怖主义背景下的态度、意图和行为的影响。我们确定了 25 项研究，这些研究测量了 28 个样本中心理健康问题的发生率。患病率是异质的，范围从 0% 到 57%。如果我们将这些样本的结果 (n = 19) 集中在样本量已知（n = 1705 名受试者）的确诊诊断上，则结果表明确诊率为 14.4%。在研究完全或以某种形式依赖对警察或司法数据的特权访问的情况下，诊断发生率为 16.96%（n = 283 名受试者）。在研究完全专注于开源（n = 1089 名受试者）的情况下，9.82% 的时间出现诊断。