Participatory approaches create opportunities for cooperation, building relationships, gaining knowledge, rethinking, and eventually changing power structures. From an international perspective, the article looks at the historical development of different participatory approaches in which building relationships and managing the balance of power between persons engaged in participatory research are central. The authors present and critically reflect on four research projects to show how they understood and implemented participatory research in different ways and what they have learned from their respective experiences. The "PaSuMi" project worked in the context of addiction prevention with migrants and provides a glimpse into different contexts of participatory research. The initiator of the study "Back into life-with a power wheelchair" works with post-stroke individuals who use the assistive device in community mobility and reflects on the shifting and intertwining roles of participants. In the research project "Workshops for implementation of expanded community nursing", new professional roles for nurses in community nursing were developed; here limitations to participation and ways to deal with them are illustrated. Finally, the "DIPEx" project deals with challenges of enabling participation of persons with multiple sclerosis via narrative interviews on the experience of health and illness. All examples underline the necessity of a permanent reflection on relationships and power dynamics in participatory research processes.
Keywords: DIPEx; error culture; health; participation; participatory research; power; reflection; research relationships; understanding of roles in research.