Posttraumatic Stress Symptoms,Aggression, and Substance Use Coping among Young Adults

This study examined how the symptom clusters of posttraumatic stress disorder (PTSD) were related to substance use and self-reported aggression in a college sample. There were 358 participants (ages 18–24) who completed surveys to assess PTSD symptoms, substance use as coping, and aggression. Hierarchical regressions tested for the effects of PTSD symptoms (total symptoms as well as cluster symptoms) on self-reported aggression, along with the main and interaction effects of substance use coping on these relationships. The hyperarousal cluster of PTSD was the only group of symptoms significantly related to aggression. There was an interaction between avoidance symptoms and substance use coping on aggression such that under conditions of high substance use coping, aggression increased regardless of avoidance symptoms; however, the relationship between avoidance and aggression was stronger under conditions of low substance use coping, with greater aggression as avoidance symptoms and low substance use coping increased.