Prevalence and Correlates of Externalizing Behaviors Among Youth Seeking Treatment Following Trauma Exposure

Clinical Impact Statement Trauma exposure is associated with a range of mental health problems, yet much of the research examining youths' reactions to trauma focuses on posttraumatic stress and other internalizing symptoms. We examined the rates of both internalizing and externalizing problems among youth seeking treatment at a trauma and grief clinic. More youth presented with externalizing problems alone or comorbid problems and elevated posttraumatic stress symptoms than posttraumatic stress symptoms alone. As such, clinicians in trauma specialty clinics must be prepared to assess and treat the full range of internalizing and externalizing problems that affect trauma-exposed youth. Objective: Trauma-exposed youth often experience impairing externalizing problems (EXTs), yet the relationship between EXTs, trauma exposure, and posttraumatic stress symptoms (PTSS) are not well understood. To examine the extent of their co-occurrence, we report the rates and correlates of youth EXTs relative to clinically elevated PTSS in a sample of youth referred to a trauma and grief specialty clinic. Method: Self- and caregiver-report measures were obtained from 260 youth ages 7-19 years (M = 11.92, SD = 3.21; 53.5% female) during a pretreatment assessment. The sample was divided into 4 groups according to the youths' PTSS and EXT score elevations, and these groups were then compared according to rates of youth depressive symptoms, youth suicidal ideation, and caregiver strain. Results: The 4 groups were comorbid PTSS and EXTs (18%); EXTs-only group (36%); PTSS-only group (13%), and subclinical symptom group (34%). The comorbid PTSS and EXTs group had the highest scores on all other child and caregiver symptom measures. Compared to the subclinical group, youth in the PTSS-only group had increased depressive symptoms and suicidal ideation, whereas youth in the EXTs-only group had elevated levels of caregiver strain. Conclusion: Co-occurring PTSS and EXTs is a common presentation among trauma-exposed youth referred to treatment. These youth are also likely to suffer from other problems of clinical concern, including suicidal ideation, and their problems are associated with caregiver distress. More research is needed to examine unique risk and resiliency factors related to the development of youth EXTs in response to trauma exposure.