My research focuses on the generation of knowledge to inform and improve the care of older adults. I have led multidisciplinary research teams on several projects addressing three inter-related areas of study: 1) designing and testing interventions that enhance, maintain, or prevent loss of physical function in older adults with and without cognitive impairment; 2) developing a comprehensive understanding of the knowledge, skills and attitudes required of healthcare professionals and healthcare aides to care for older persons and their care partners, which is central to contributing to positive outcomes for these individuals with multiple and complex needs; and 3) conceptualizing, developing, and testing supportive models of supervision of regulated and unregulated staff in healthcare settings. Supportive staff supervision models form a structural element integral to promoting high quality work environments, which serve to optimize the processes and outcomes of health care. The results of my research program have led to understanding interventions that have a positive effect on patients and staff in long-term care homes and rehabilitation environments and on the development of appropriate health policies.