A critical evaluation of the law's engagement with the process of healthcare decision-making, and how the relationship might be enhanced.

Dr Mary Donnelly is a Senior Lecturer at the Law Faculty, University College Cork, where she teaches medical law at undergraduate and postgraduate levels.

Introduction; 1. Autonomy: variations on a principle; 2. Autonomy in the law; 3. Capacity: the gatekeeper for autonomy; 4. Capacity assessment in practice; 5. Autonomy, rights and decision-making for people lacking capacity; 6. Treatment for a mental disorder: a case apart; Conclusion.