In previous blogs, we have explored some of the many different elements required to assess mental capacity for a specific decision. This brings us then to the two stage test, which is composed of the functional and diagnostic steps that are then bound together as part of the causative nexus (the justifiable link).
The diagnostic step is a simple but often misunderstood part of the Mental Capacity Assessment. One of the most common errors is to simply list a medical diagnosis without any explanation of how the diagnosis impacts upon decision-making. However, this link – also known as the causative nexus – is the vital point on which the rest of the assessment is based. It is therefore important to understand exactly why the diagnostic step is important and how to document it properly.