Deployment-related PTSD symptomatology and social functioning: Probing the mediating roles of emotion regulation and mentalization in an outpatient veteran sample.

Deployment-related posttraumatic stress disorder (PTSD) impacts social functioning in families. Therefore, it is important to examine the factors that contribute to social functioning in families that are confronted with deployment-related PTSD. The goal of this study was to assess the association between PTSD symptom severity and social functioning using self-report questionnaires in an outpatient veteran sample and to test the mediating roles of emotion regulation (Study 1, N = 100) and mentalization (Study 2, N = 38). Study 1 demonstrated that emotion regulation problems fully mediated PTSD associated family dysfunctioning. Study 2 did not demonstrate a mediation role of mentalization, but also did not demonstrate an association between PTSD and social dysfunctioning. Maladaptive mentalization was associated with poor child adjustment. Critically, a between-study comparison revealed that PTSD symptom severity was significantly higher in Study 1 than in Study 2. Overall, our findings suggest that social dysfunctioning may only appear when a given severity threshold of PTSD is reached, in which emotion regulation might be a key clinical factor. Maladaptive mentalization may be critical for post-deployment child adjustment. Future research should further examine social functioning in samples with different PTSD severity profiles and include the role of mentalization. Longitudinal data are needed to gain further insight into the causal relationships among the factors considered and the etiological pathways that lead to developing social dysfunction over time.