When we fail to live up to our own standards: the relationship between self-discrepancy and moral injury.

Background: Moral injury is a potentially debilitating outcome of exposure to events involving transgressions against an individual's moral code. It is often observed in the context of PTSD; however, treatments that do not differentiate the two are often ineffective for moral injury, suggesting different mechanisms contribute to the conditions. The most widely accepted model of moral injury proposes an important role for self-discrepancy processes in generating and maintaining event-related distress, but this has yet to be examined.

Methods: This study recruited 172 adults online who had been exposed to a potentially morally injurious event in the previous 5 years. Participants completed measures of event-related distress, PTSD, depression, and anxiety, as well as a self-discrepancy task involving subjective representations of their ideal, ought, and feared selves.

Results: Multiple regression analyses found a small but significant relationship between self-discrepancy and event-related distress, with higher levels of ought self-discrepancy independently predicting higher event-related distress scores.

Conclusions: This study provides the first empirical evidence of the relationship between self-discrepancy and moral injury. We identified the ought self as a domain of self-discrepancy salient to moral injury, further differentiating moral injury from PTSD.