A systematic review and meta-analysis published in Campbell Systematic Reviews identified and examined more than 100 risk and protective factors for radical attitudes, intentions, and behaviors (including terrorism) in democratic countries. The factors can be grouped into five domains: socio-demographic and background factors, attitudinal and subjective belief related factors, experiential factors, and While there is great variation, the most significant factors are traditional criminogenic and social-psychological factors. "Our results suggest that some of the factors most...