Abstract

The Mental Capacity Act 2005 gives statutory force to the common law principle that all adults are assumed to have capacity to make decisions unless proven otherwise. In accord with best practice, this principle places the evidential burden on researchers rather than participants and requires researchers to take account of short-term and transient understandings common among some research populations. The aim of this paper is to explore some of the implications of the MCA 2005 for researchers working with 'vulnerable' populations in health and social care settings. The Cyclical Consent Model is described and offered as a process by which researchers might develop good practice when engaged in research involving vulnerable people