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TRAP-18 (Terrorist Radicalisation Assessment Protocol)

18-indicator structured professional judgement instrument by Reid Meloy, Roshdi, Guldimann and Hoffmann (2014). Distinguishes 8 proximal warning behaviours (leakage, pathway, fixation, novel aggression, energy burst, identification, last resort, direct threat) from 10 distal characteristics. Validated retrospectively against 73 lone actors across ideological categories.

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BNS § 113 and UAPAChannel programme (UK)Disengagement vs deradicalisationLeakageMcCauley-Moskalenko two-pyramid modelVERA-2R (Violent Extremism Risk Assessment)

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