Posttraumatic Stress Disorder Symptom Clusters, Exposure to Potentially Morally Injurious Events, and Aggression Among Army Veterans

Objective: Very few studies have examined the association between posttraumatic stress disorder (PTSD) symptom clusters and aggression since the change in PTSD diagnosis criteria a decade ago. Furthermore, these studies have used measures based on PTSD criteria of the DSM-IV. The current study therefore examines the association between PTSD symptom clusters, exposure to potentially morally injurious events (PMIEs), and various types of aggression following the change in PTSD criteria and in accordance with the criteria of the DSM-5-TR. Method: A sample of 167 Israeli combat veterans completed validated self-report questionnaires tapping PTSD symptoms, exposure to PMIEs, and aggression levels. Results: Our analysis revealed a significant positive relationship between the number of court-martials, betrayal-based PMIEs, all PTSD symptom clusters, and aggression. We also found that the arousal cluster, as well as the number of court-martials and age, predicted aggression, whereas the re-experiencing cluster predicted lower aggression levels. Conclusion: Besides an updated understanding of the association between all PTSD symptom clusters and various forms of aggression, these findings emphasize the importance of targeting arousal symptoms and especially anger in treatment of veterans with PTSD symptoms and those who report experiences of betrayal. The findings also suggest clinicians to consider arousal symptoms, age, and history of court-martials when conducting either clinical or actuarial risk assessments of veterans.