Problem solving is a common focus of psychological interventions for young people. However, existing evidence syntheses are relatively limited in their scope and conclusions. Taking a transdiagnostic approach and incorporating diverse sources of evidence, we examined the role of problem solving as an active ingredient for the indicated prevention and treatment of depression and anxiety in 14–24-year-olds. Three information sources were integrated using framework synthesis: (1) a systematic review of randomized controlled trials of problem solving; (2) a metasynthesis of qualitative evidence on the therapeutic experience of problem solving; and (3) consultations with a Youth Advisory Group.
