Abstract
The appropriate adult (AA) safeguard is an important procedural safeguard that can be implemented to protect vulnerable suspects at the police investigative stage of the criminal process. The safeguard is available for young suspects (below the age of 18) and adult suspects who are defined as vulnerable, and can be performed by a vast array of individuals. It is intended to protect evidence, enable effective participation and avoid miscarriages of justice. However, the safeguard lacks an underpinning conceptual framework; it is, and can, be interpreted in multiple ways, thus undermining its efficacy. Drawing upon doctrinal and socio-legal analysis, this article examines how the safeguard is-and, crucially, can be-conceptualised. It is argued that, although it is used principally as an evidential safeguard, the appropriate adult could be reimagined through the United Nations Conventions on the Rights of Persons with Disabilities and the United Nations Conventions on the Rights of the Child, with a specific focus on allowing for effective participation of the vulnerable suspect.