The purpose of this study is to evaluate, in a randomised control trial (RCT), the effectiveness of group-based, trauma-focused Cognitive Behaviour Therapy (TF-CBT) in reducing psychological distress in former child soldiers and other war-affected children in the Democratic Republic of Congo (DRC).

To the best of the author's knowledge this is the first group-based mental health or psychosocial intervention developed specifically for psychologically distressed former child soldiers. While CBT is the modality with most empirical evidence for treating war-affected young people, this is the first evaluation with child soldiers specifically.

Former child soldiers and war affected 'street boys' (aged 13-17) in eastern DRC, will be screened for symptoms of psychological distress and then randomly assigned to either a treatment group or a waiting-list control. The treatment groups will receive a 15-session manualised, culturally-adapted, TF-CBT intervention. This includes psycho-education, relaxation, affect modulation, cognitive processing and constructing a trauma narrative. After treatment and post-testing, the waiting-list controls then begin their intervention.

Inclusion Criteria:

• War-affected children and adolescents

Exclusion Criteria:

• No traumatic war events experienced
• Psychosis
• Inability to speak Swahili, French or English