TY  - JOUR
TI  - Foreshadowing targeted violence: Assessing leakage of intent by public mass murderers
PB  - Aggression and Violent Behavior
UR  - http://dx.doi.org/10.1016/j.avb.2017.12.002
SN  - 1359-1789
EP  - 100
KW  - Mass murder; Leakage; Grievance; Threat assessment; Targeted violence
A1  - Silver, J
A1  - Horgan, J
A1  - Gill, P
SP  - 94
AV  - public
JF  - Aggression and Violent Behavior
N1  - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions.
N2  - The idea that identifiable behaviors presage violence is a core concept in the threat assessment literature. Especially meaningful from an operational perspective is ?leakage?, which concerns whether offenders intentionally or unintentionally reveal insights into their thoughts or feelings that suggest impending targeted violence. Previous research has generally been limited to assessing the prevalence of leakage in various offender populations. The present study more thoroughly describes leakage in a sample of 115 public mass murderers in the U.S. whose activities took place between 1990 and 2014. We disaggregate leakage into three distinct forms (written statements, verbal statements to the public, verbal statements to family/friends), and examine these in relation to theorized correlates of leakage. The only significant predictor of leakage we found is the presence of a grievance, specifically a grievance against a person or entity, as opposed to a grievance against a category of people or a grievance against an idea, movement or religion. We discuss implications of these results as well as directions for future research.
Y1  - 2018/01//
ID  - discovery10040396
VL  - 38
ER  -