Study design
This study entails a single-blind, randomized controlled trial with two arms: a phase-based treatment condition (TRAP followed by EMDR) and a trauma-focused treatment condition (EMDR only). In the TRAP-EMDR condition, participants receive 12 sessions of skills training (TRAP; the Dutch adolescents version of the STAIRS protocol), followed by 12 sessions of EMDR therapy. In the other condition, the participants receive 12 EMDR sessions. The two groups will be compared for several outcome variables before treatment, immediately after 12 sessions (post-treatment), and six months post-treatment (follow-up) (see Fig. Flowchart of the MARS-study