Pre-Attack Warning Behaviors of 20 Adolescent School Shooters: A Case Study Analysis

Abstract

This study examines the pre-attack warning behaviors of adolescent school shooters in the US. We conducted 20 case studies of adolescent school shooters in the United States that committed non-fatal or fatal shootings on K-12 school grounds between 1999 and 2016. We investigate whether the school shooters displayed warning behaviors before the attack, who in the perpetrator’s life was aware of these warning behaviors, and what if any actions were taken in response. Given the emergence of online forms of communication, we also investigate how adolescent school shooters may variably communicate warning behaviors in online and offline contexts.

Keywords

school violence juvenile delinquency violence prevention

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