Prevention of Depression and Anxiety in Adolescents with a High Familial Risk.

In this randomized controlled trial (RCT with 2 conditions, intervention and control group) the effectiveness of an indicated and selective prevention program aimed at depression and anxiety for adolescents (aged 11-15) with high familial risk will be tested. Adolescents in the intervention condition receive the program consisting of the 6 sessions of 90 minutes that will be implemented at school. Measurements of primary and secondary outcomes will be conducted in the intervention and control group at baseline, immediately after each session 2, 4 and 6 (post-intervention), at 6 months and 12 months follow-up.

The effectiveness of an indicated indicated depression and anxiety prevention program ('Een Sprong Vooruit') will be tested in a Dutch sample of adolescents (aged 11-15) with high familial risk. It is expected that the adolescents who receive the intervention will show lower levels of depressive and anxiety symptoms during follow-up, compared to the control group.

1. Baseline;

2. Intervention phase 1 (after session 2);

3. Intervention phase 2 (after session 4);

4. Post-intervention (after session 6);

5. Follow-up 1 (6 months);

6. Follow-up 2 (12 months).

The children with symptoms of depression and/or anxiety and with parents with elevated levels of depression and/or anxiety randomly assigned to the intervention or control condition. Participants in the intervention condition receive the program, consisting of 6 sessions of 90 minutes that will be implemented at school. Participants in the intervention and participants in the control condition will fill in questionnaires at six moments during the study. After the study, adolescents in the control condition will also get the chance to follow the lessons.