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High rates of posttraumatic stress disorder (PTSD) symptoms and elevated levels of aggression are common among youth in inpatient psychiatric settings. Several models link trauma exposure to aggression through anomalous mental state reasoning. Some theoretical frameworks linking trauma to aggression specify that the over-attribution of hostile mental states contributes to the development of aggressive behavior whereas other theories suggest that an inhibition of mental state reasoning leads to aggressive behavior. Using a sample of inpatient adolescents, the current study examined relations between PTSD symptoms and four forms of aggression, exploring the role of both over- and under-mentalizing (i.e., hypo- and hypermentalizing) as mediators and gender as a moderator. The results suggest that hypermentalizing, but not hypomentalizing, mediates the relation between trauma and aggression, extending prior research related to inpatient adolescents for the first time. Evidence of moderated mediation was noted, such that this mediational relation was evident for females but not males. The current study offers support for differential underlying causes of aggression among males and females with PTSD symptoms.

Evidence suggests delinquent youth are more likely to suffer from posttraumatic stress symptoms and links those symptoms to subsequent aggressive behavior and criminal activity. Research also indicates the impact of decision-making capacity in this context. Specifically, future orientation has been shown to play an important role in adolescent delinquency; less future orientation has been linked with persistent delinquency. Notably, trauma exposure is associated with slower development of future orientation in delinquent youth. Using a sample of serious juvenile offenders, the current study examined the relation between posttraumatic stress symptoms and aggressive reoffending testing the hypothesis that future orientation would mediate that relation. Results did not indicate significant mediation by future orientation in the link between posttraumatic stress symptoms and aggressive reoffending. However, experiencing posttraumatic stress symptoms and low future orientation separately increased the likelihood of aggressive recidivism. Findings highlight the value of comprehensive prevention and intervention efforts, targeting both posttraumatic stress symptoms and future orientation. [ABSTRACT FROM AUTHOR]