Understanding Suicidal Behavior in the Military: An Evaluation of Joiner's Interpersonal-Psychological Theory of Suicidal Behavior in Two Case Studies of Active Duty Post-Deployers

Suicide in the military is a growing concern. We reviewed empirical studies and used two case studies to illustrate the potential explanatory role of Joiner's (2005) interpersonal-psychological theory of suicidal behavior. The theory posits that three variables—perceived burdensomeness, thwarted belongingness, and acquired capability for suicide—determine the risk of an individual engaging in a lethal suicide attempt. In our case studies, we illustrate how these variables might be affected in an active duty population post-deployment. Although methodological limitations preclude conclusive determinations, the case studies provide a framework within which to understand the phenomenon of suicide in the military. Future work that examines these findings empirically will be invaluable to both researchers and mental health counselors.