Thank you very much for your question.
I'm going to read a bit from the notes that I give to residents in psychiatry and child psychiatry to consider when they're addressing capacity, because capacity is not magic. It doesn't happen at one age or another; it happens over a continuum. It's based on a number of factors.
When we consider decision-making capacity in medical treatment decisions, we consider, first of all, whether the young person involved understands the relevant information of the condition, including around treatment and other measures that are being explained and provided. Secondly, we consider the degree to which they appreciate the situation and the circumstances. Finally, we consider their ability to communicate the decision.
I'll use a really brief example. Consider a young person who is, let's say, about 10 years old, because this would be consistent with their developmental level. They've broken a collarbone for the second time. It happens pretty regularly. They've had a broken collarbone before. They go to the emergency room, and while they're in the emergency room they sit with a hand on their shoulder. They sit like this because they've broken that collarbone before and they know that sitting like this it relieves the pain from that collarbone.
The pediatrician or doctor will come in and ask what they are here for. The child will say, “I broke my collarbone. I broke it once before and the doctor at the time said it might well happen again. I know that if I hold my hand like this, it won't hurt as badly.” This isn't an uncommon thing. I work in a pediatric emergency room. The doctor will then say, “We think you need an X-ray.” This has happened to this individual before, so they say, “Yes, I need an X-ray.”
I only use that particular example to explain that there can be a complexity of medical conditions. Clearly, when a young person is considering something more complicated, such as a mental health condition or a glioblastoma, and they're facing making decisions about dying and they're working with their parents around that, it's a much more complicated situation for the clinician.
Clinicians in child and adolescent psychiatry are very experienced in dealing with capacity, so they would—