Research in the focus area 'Participation' focuses on the involvement of both older people and their loved ones and family. Successful cooperation between care providers, researchers, the elderly and their relatives is essential for a good quality of life for the older persons and their loved ones. Involving older persons and their loved ones can help improve the quality of our research through better alignment with their experiential knowledge, ideas, needs and priorities. An effective design of this involvement is very important in this respect.