RT Article T1 Space between concern and crime JF Criminology & public policy VO 19 IS 1 SP 253 OP 270 A1 Silver, James LA English YR 2020 UL https://krimdok.uni-tuebingen.de/Record/1691291498 AB Amid widespread agreement that public mass violence is generally the result of understandable and often discoverable thoughts and behaviors, the threat assessment model of identifying, assessing, and managing potential offenders has proven an effective safety approach across different offender types. In this article I describe two impediments to the model's efficacy - incomplete national adoption of the model, and the disinclination of some bystanders to report concerning behaviors potentially related to public mass violence. I propose addressing the first of these obstacles by encouraging use of dissemination and implementation science, and the second by extending emerging application of social norms concepts. Each approach leverages the strength of existing (and developing) threat assessment strategies and highlights potentially productive areas for research and policy innovation. K1 Threat assessment K1 Mass violence K1 Threat assessment model DO 10.1111/1745-9133.12474