Abstract
In this study, we examined the underlying role of anger in posttraumatic stress disorder (PTSD). Although anger is currently considered within two symptoms of PTSD (i.e., anger/irritability; and negative emotional state), some research has found that anger is more than just a diagnostic symptom of PTSD. The sample consisted of 375 trauma-exposed individuals that completed the PTSD Checklist-5 and Dimensions of Anger Reactions Scale. Confirmatory factor analysis was used to assess PTSD's factor structure based on the four-factor DSM-5 PTSD model. Subsequently, the model was re-tested, statistically controlling for anger by regressing PTSD's items on an observed anger score. Individual factor loading differences were then compared to determine anger's underlying role. Results indicated that a significant amount of variance in PTSD, at both the item level and factor level, was attributable to an underlying dimension of anger. The largest factor attenuation was for the symptom of irritability/anger and the smallest attenuation was recklessness. The results suggest that anger underlies more of PTSD than the two diagnostic symptom criteria.
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