A fundamental aspect of the Mental Capacity Act 2005 (MCA) is the statutory endorsement of a functional approach to capacity. In principle, this requires a separate assessment of capacity in respect of each decision to be made. Most capacity assessments take place at a non-judicial level, and, outside of day-to-day decisions, the most common assessors are likely to be healthcare professionals. This paper investigates the practical operation of the capacity assessment process at both judicial and non-judicial levels. It asks whether the process can deliver on the MCA's goal of preserving maximum decision-making freedom, while, at the same time, providing an appropriate degree of protection. It argues that assessors who are not legally trained encounter signific
Whether treatment decision-making capacity can be meaningfully applied to patients with a diagnosis of "personality disorder" is examined. Patients presenting to a psychiatric emergency clinic with threats of self-harm are considered, two having been assessed and reviewed in detail. It was found that capacity can be meaningfully assessed in such patients, although the process is more complex than in patients with diagnoses of a more conventional kind. The process of assessing capacity in such patients is very time-consuming and may become, in itself, a therapeutic intervention.