Giving children a voice: Concept development and foundation of the first Children's council "mental health" in Germany.

Background: As summarized by the Lancet Psychiatry Commission on youth mental health (McGorry et al., 2024), the statistics on mental disorders in children are alarming and highlight the need to expand and optimize research on childhood mental health. Although patient and public involvement (PPI) of those affected has the potential to boost both the acceptance and outcomes of research studies, the active involvement of young children, that is, primary school children, in mental health research has been neglected. Methods: Based on the results of our systematic literature analysis of PPI of children in mental health research, the concept development of the Children's Council 'Mental Health' was administered in cooperation with several stakeholders and focus groups (practitioners and researchers in the field of clinical psychology and psychotherapy across the lifespan, representatives from three self-help organizations for mental disorders, children's focus group). The concept was further optimized in collaboration with the German Children's Fund (Deutsches Kinderhilfswerk e. V.). Results: The Children's Council was successfully founded with five children aged between 6 and 9 years. Participation is positively received, and each meeting is evaluated using visual measurements. The results from the meetings are presented and discussed. They serve as basis for concrete recommendations for involving young children in mental health research. Conclusions: To the best of our knowledge, this is the first structured approach involving young children in mental health research studies. The main goal of our study is the direct and immediate empowerment of children, in this case primary school children at the age of 6-12 years. This is associated with a child-friendly exchange on topics related to mental health, as well as the enhancement of the education process on mental disorders and prevention.