A Literature Review on Methodology used in Evaluating Effects of Preventive and De-radicalisation Interventions

De-radicalization Terrorism

Policies aimed at preventing (further) radicalisation or aimed at de-radicalisation are required to be 'evidence-based'. This suggests that evaluators should apply rigorous empirical methodology and measurement techniques. However, it is often unclear what this evidence should consist of and how it should be gathered. In the present paper we present results of a literature review focusing on evaluations of programmes aimed at preventing radicalisation or de-radicalisation between 1990 until July 2014. We identified 55 manuscripts including 135 participant samples. Primary qualitative or quantitative empirical data about effectiveness of an intervention was presented in only 16 participant samples (12%).