The Efficacy of Psychosocial Interventions for Grief Symptoms in Bereaved Children and Adolescents: A Systematic Review and Meta-Analysis.

•Preventive interventions demonstrate only small effects on grief symptoms.•Effects are substantially reduced when controlling for the natural course of bereavement.•Interventions for youth with elevated distress are efficacious in uncontrolled studies.•Controlled trials need to investigate psychotherapy for prolonged grief disorder.•The limited evidence precludes definite treatment recommendations.