Conceptualizing researchers' perspectives on involving professionals in research: a group concept mapping study.

This study reveals conceptual areas on a comprehensive and illustrative map which contributes to the understanding of professionals' involvement in research on ageing and health. A conceptual basis for further studies is offered, where the aim is to investigate the processes and outcomes entailed in involving professionals in research on ageing and health. The study also contributes to the development of instruments and theories for optimizing the involvement of professionals in research.