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The Operational Development and Empirical Testing of the Terrorist Radicalization Assessment Protocol (TRAP–18)
Journal of Personality Assessment
The Terrorist Radicalization Assessment Protocol (TRAP-18) is a structured professional judgment instrument for threat assessment of the individual terrorist. It is a rationally derived theoretical model comprising eight proximal warning behaviors and 10 distal characteristics. Empirical research on the TRAP-18 is reviewed, including both nomothetic and idiographic studies of individual terrorists in both the United States and Europe. Mean interrater reliability is 0.895 (Cohen's kappa),doi:10.1080/00223891.2018.1481077 pmid:29927673 fatcat:cv45phoz7fdcbdogwuzwssxpbi