Temporal Associations Between Moral Injury and Posttraumatic Stress Disorder Symptom Clusters in Military Veterans

War zone veterans who experience posttraumatic stress disorder (PTSD) symptoms might struggle with co-occurring cognitive, emotional, and behavioral expressions of suffering that align with conceptual definitions of moral injury (MI). However, given that PTSD is a multidimensional condition, disentangling the apparent interplay with MI may inform clinical practice and research. This study incorporated a cross-lagged design to explore temporal associations between self- and other-directed outcomes related to MI and severity of DSM-5 PTSD symptom clusters while accounting for depressive symptoms. Drawing on the Expressions of Moral Injury Scale-Military Version in a community sample of 182 previously deployed veterans, MI-related outcomes were linked with severity of PTSD symptom clusters at two assessments spaced apart by 6 months, rs = .58-.62. Of possible models for conceptualizing the temporal nature of these associations, structural equation modeling analyses revealed a cross-lagged primary MI model best fit veterans' responses. Within this model, veterans' self-directed MI at Time 1 predicted greater PTSD symptoms at the 6-month follow-up. However, an equivalent cross-lagged path also emerged between Time 1 PTSD Cluster D symptoms and self-directed MI at Time 2, suggesting the value of a reciprocal MI model for this symptom domain. In contrast, other-directed outcomes of MI were not linked with PTSD in the presence of other variables. Overall, these findings support the prognostic value of assessing for MI-related outcomes among veterans who might be struggling with PTSD symptomatology, particularly with respect to self-directed problems associated with enduring moral distress.