When Welfare Thinking Undermines Capacity Assessment: Lessons from the Frontline
Some of the most difficult Mental Capacity Act assessments arise where risk is chronic, emotions are heightened, and professionals are carrying understandable fears about serious harm or death. These are precisely the circumstances where the analytical precision the MCA demands can begin to erode under the weight of welfare concern.
I was recently asked to consult and advise on a case involving a man detained under Section 3 of the Mental Health Act following repeated life-threatening self-poisoining involving prescribed medication. He lived alone, was socially isolated, and professionals were increasingly concerned about the sustainability of his living situation.
Following a previous discharge, a care package had been commissioned including medication prompting and support aimed at building connections in the community. He frequently refused access to support workers, and services had been unable to maintain contact with him. Within a short period he experienced another overdose and was recalled to hospital under his Community Treatment Order.
Against this backdrop, concerns were raised about his capacity in relation to care and accommodation decisions, and a conclusion of incapacity had been reached. Working through the case raised important questions — not about the intentions of those involved, which were clearly genuine — but about the structural and conceptual challenges facing frontline practitioners when navigating high-risk MCA assessments.
Eighteen years after the MCA came into force, those challenges remain stubbornly present. What this case illustrated is not a failure of individual practice so much as a persistent gap in how the Act's framework is understood and applied under pressure.
The foundation was shaky before the assessment even began
A significant part of the rationale for incapacity rested on the fact that he had repeatedly declined to participate in conversations about his situation, and when he did respond, he consistently said he was fine and minimised the severity of the overdoses. Multiple attempts had been made to have these conversations, and his apparent inability or unwillingness to meaningfully participate was treated as indicative of impaired capacity.
But before reaching that conclusion, a prior question has to be asked: had everything practicable been done to support him to communicate?
Section 1(3) of the MCA places a legal duty on assessors to take all practicable steps to help a person make a decision before concluding they cannot. This is not a procedural nicety — it is a statutory precondition. The Supreme Court in A Local Authority v JB reinforced this, making clear that the support duty is integral to the capacity assessment process itself, not something that happens alongside it or after.
In this case, the working assumption was that the individual may have had autism. No formal diagnosis had been made, but neurodevelopmental differences were part of the clinical picture. What concerned me, therefore, was that there was no record of a Speech and Language Therapy assessment having taken place, and no communication passport had been developed. There had been no meaningful attempt to offer alternative formats — no use of images, written information, or easy read materials. The conversations that were attempted appear to have taken the form that professionals defaulted to, rather than the form he might have needed.
When someone with a possible communication difference repeatedly says "I'm fine" and withdraws from contact, that warrants careful interpretation. It may reflect a lack of capacity. But it may equally reflect that the communication approach being used is not accessible to him, or that the environment and dynamic of those conversations made it feel unsafe or pointless to respond genuinely. Without first exploring and exhausting those possibilities, a conclusion of incapacity built on his responses — or lack of them — is on uncertain legal and ethical ground.
It is also worth pausing on the language commonly used in these situations. When records describe someone as having "disengaged from services," the framing quietly places the problem with the individual. It leaves unexamined the question of whether services were ever offered in a way that was accessible, appropriate, or felt safe to him. That linguistic habit is not neutral — it shapes how capacity assessments are constructed and where scrutiny lands. In this case, describing a pattern of services failing to reach him would have been both more accurate and more honest about what the evidence actually showed.
The decision itself had not been properly defined
This matters even more when you consider that the specific decision being assessed had not been clearly identified in the first place.
Much of the professional concern centred on the view that he ought to move into supported accommodation. But no Care Act assessment had been completed, no concrete options had been identified, and no placements had been explored in any detail. "Supported accommodation" is not a single decision — it encompasses vastly different environments, levels of restriction and staffing arrangements. Without that specificity, how could any meaningful conversation about it be had, let alone a meaningful assessment of whether he could meaningfully participate in one?
The JB judgment is instructive here too. The Supreme Court emphasised the importance of identifying the precise 'matter' under consideration, and the information genuinely relevant to that decision — not a broader sweep of professional anxieties about a person's lifestyle or welfare. The assessment risked asking not "can this person make this specific decision?" but something closer to "can professionals safely tolerate the consequences of the way he is living?"
Those are fundamentally different questions.
Incapacity, or an unwise decision?
Layered on top of all of this was the question of whether the concerns really went to capacity at all, or whether they reflected professional distress at decisions being made that felt unacceptable.
The repeated overdoses understandably generated significant anxiety. It would be unusual for any practitioner to encounter repeated life-threatening self-harm without a strong protective response. But Section 1(4) of the MCA is explicit: a person is not to be treated as lacking capacity simply because they make a decision that others consider unwise. That principle exists for exactly these situations — not the easy ones.
What can happen in high-risk cases, and what felt present here, is a gradual and often unconscious shift in the reasoning. The behaviour is dangerous, so it seems inconceivable that a person would choose it freely, so the conclusion of incapacity begins to feel self-evident. Peter Jackson J named this dynamic in Heart of England NHS Foundation Trust v JB — the risk of allowing "the tail of welfare to wag the dog of capacity." It is an enduring phrase precisely because it captures something real: the moment where professional concern about outcomes starts to shape the conclusion on capacity, rather than following from it.
A person may fully understand the risks of isolation, overdose and withdrawal from contact with services, and still prioritise remaining in their own home above professional concerns about his welfare. That may be deeply uncomfortable for everyone around him. But discomfort with a decision is not the same as evidence that an impairment is preventing the decision from being made.
The diagnostic picture and the causal link
The case raised a further difficulty around the diagnostic basis for the incapacity finding. He had a diagnosis of depression and was awaiting assessment for possible autism spectrum disorder — but that assessment had not taken place. Despite this, much of the reasoning appeared to draw on perceived autistic traits: social withdrawal, rigidity, preference for isolation, a pattern of services failing to reach him.
The MCA requires assessors to identify a specific impairment or disturbance in the functioning of the mind or brain, and then to show how that impairment causes the inability to make the particular decision. That causal link is not a technicality — it is the legal architecture of the test. If depression was the identified impairment, the assessment needed to explain how depressive symptomology was specifically preventing him from understanding, retaining, or weighing the relevant information. Instead, the reasoning appeared to lean on traits associated with a condition that had not been diagnosed and, critically, had not been properly assessed or accommodated in the communication approach used.
This is where the threads pull together.
Unconventional communication, social withdrawal, and saying "I'm fine" when under pressure are not, in themselves, evidence of incapacity. They may be entirely consistent with how a person with autism or depression presents under stress — and the appropriate response to that is to adapt the assessment approach, not to treat the presentation as confirmation of the conclusion. The absence of a SALT assessment or communication passport, given the working assumption around autism, meant the assessment was drawing conclusions about capacity without having created the conditions in which capacity could properly be demonstrated.
A systemic challenge, not an individual one
What struck me most when advising on this case was not that poor practice had occurred in isolation, but how recognisable the patterns were. The underspecified decision, the insufficient communication support, the blurring of unwise decisions and incapacity, the uncertain diagnostic pathway — these are not the hallmarks of careless practitioners. They are the predictable consequences of asking people to apply a complex legal framework under significant emotional and organisational pressure, without the depth of training needed to hold the framework steady when it is hardest to do so.
The language we default to in these cases is telling. When someone is described as unwilling to participate, or as having failed to connect with services, the framing does quiet but important work — it locates the difficulty in the individual and leaves the system unexamined. Robust MCA practice requires us to resist that habit, and to ask consistently what the system did or did not offer before reaching conclusions about what the person could or could not do.
The MCA has been in force since 2007. Yet the evidence — from case law, from the post-legislative scrutiny review, and from cases like this one — suggests the implementation gap at frontline level has never fully closed. The statutory principles are clear. The challenge is ensuring practitioners have both the understanding and the reflective space to apply them rigorously in exactly the kinds of cases where that rigour is most likely to slip.Because once the outcome professionals hope to achieve begins driving the capacity conclusion, the MCA stops functioning as a safeguard for autonomy — and risks becoming a mechanism for authorising what others have decided is the safer or better life.