Emotional Trauma in Witnesses of Mass Shootings

Abstract

Mass shootings generate extreme, unpredictable trauma for survivors and witnesses, who often experience acute stress responses, long-term psychological harm, impaired memory recall, and significant social disruption. This paper examines emotional trauma in direct and indirect witnesses, exploring neurobiological responses, cognitive effects, and legal consequences when witnesses testify. The proposed Trauma Exposure–Response Interaction Model (TERIM) integrates immediate physiological reactions, emotional regulation breakdown, memory encoding disruption, and post-traumatic social adaptation. Findings show long-term risks including PTSD, survivor’s guilt, hypervigilance, avoidance, dissociation, and vicarious trauma through media exposure. Effective response requires trauma-informed mental health care, survivor-centered legal processes, community rebuilding, and responsible media frameworks.