Chapter 3 – Stigma, Diagnosis, and the Stories We Tell

There is a word I want to start with, and I want to start with it carefully, because it is both over‑used and under‑examined. The word is stigma.

In everyday use, stigma has come to mean something like “social disapproval” — the vague discomfort people feel around certain conditions, identities, or behaviours. That usage is not wrong, but it is too thin for what we need to do in this chapter. Stigma is not primarily an emotional response. It is a cognitive and social mechanism — a way of organising information about people that then shapes every subsequent interaction with them. To understand what it actually does, we need to go inside it rather than just name it.

This chapter argues three things. First, that diagnostic labels operate as stigma‑carrying devices as well as clinical tools — not because diagnosis is wrong in itself, but because the concepts of “disorder” and “deficit” are not neutral descriptors; they arrive pre‑loaded with valence. Second, that stigma works through a specific neurological mechanism — the one described in the NPF/CNI framework as the Spillover Effect — that bleeds a judgment about one domain into every other domain, contaminating credibility in ways that are neither rational nor intentional. And third, that the stories we tell about neurodivergence and disability are not just reflections of how we feel about these things; they are active determinants of what neurodivergent and disabled people can know, say, and be heard to say.

What a Label Actually Does

Let me begin with something that sounds straightforward but turns out to be complicated.

When a child receives a diagnosis of ADHD, two quite different things happen simultaneously. One is clinical: a physician or psychologist has applied a set of criteria to a cluster of observed behaviours and determined that the child’s presentation meets threshold. That is a technical act, and it has genuine utility — it opens access to support, accommodations, medication where appropriate, and a community of others with similar experiences. I am not arguing against diagnosis.

For many people, this first thing is also a profound relief. Having a name — even an imperfect name — can soften internalised shame before external stigma has shifted at all. If you have spent years blaming yourself for a difficulty you could not explain, the diagnostic category gives you a frame for understanding that the difficulty is real, that it has a shape, that others share it. That is not nothing. It can be the difference between a person continuing to spiral in self‑blame and beginning to organise their life around what they actually need. This matters, and this chapter holds it.

The other thing that happens is social and cognitive: everyone who learns about the diagnosis now has a new piece of information about this child that organises how they perceive everything else. Teachers begin to attribute difficulties to the diagnosis. Parents interpret emotional responses through it. Peers, if they find out, adjust their model of who this child is. The child themselves begins to do the same — begins to read their own experience through the diagnostic frame, which can be both illuminating (finally, an explanation) and constraining (what if not everything that is hard for me is ADHD?).

This is not a failure of individual people. It is what cognitive categories do. Once we have a label for something, our minds use that label to organise new information. The label becomes a high‑centrality belief — a node in the belief network that sits at the centre of many connected inferences. In the language of the NPF/CNI framework, it functions as an Ideological Scaffolding event: a foundational belief that organises and anchors a cluster of secondary beliefs around it. “This child has ADHD” becomes the scaffolding for: this child will struggle with sustained attention; this child may be difficult to manage; this child’s reports of being bored may be the condition rather than the environment being unstimulating; this child’s extraordinary focus on certain topics is a symptom rather than a genuine interest. Not all of these inferences are wrong — but they are all downstream of the label, and they arrive automatically, without deliberate evaluation.

The diagnostic label, in other words, does not just describe. It organises perception. And because perception is the gateway to interaction, it organises behaviour as well.

The History of “Disorder”

The concept of “disorder” did not arrive in medicine as a neutral descriptor. It arrived carrying a particular theory of what human minds and bodies are supposed to do — and implicitly, what they are supposed to be.

When the American Psychiatric Association published the first Diagnostic and Statistical Manual of Mental Disorders in 1952, the categories it contained were not derived primarily from neurological or genetic evidence — that evidence barely existed. They were derived from clinical consensus: agreements among practitioners about which presentations caused sufficient difficulty that they warranted intervention. The word “disorder” was doing conceptual work: it implied that something had gone wrong with an underlying order, that the system was not functioning as it should.

That framing has consequences that run through diagnostic psychiatry to this day. It treats the “normal” functioning mind as the baseline and the neurodivergent mind as a departure from it — a departure that, by definition, requires correction toward the norm. The question the diagnostic frame asks is: what has gone wrong? The question this book is asking is different: what is actually happening, and in what contexts does it cause difficulty? Those are not the same question, and they do not lead to the same answers.

None of this means that diagnostic categories have no value. They do. They organise research, guide treatment, and provide a shared vocabulary for people whose experiences are otherwise hard to communicate. A diagnosis of autism, however imperfect the category, can be transformative for someone who has spent decades wondering why they are so different from the people around them. The problem is not diagnosis per se. The problem is the theory of the human embedded in the concept of “disorder” — the assumption that difference is deficiency, that atypicality is abnormality, that the wide range of human variation can be cleanly sorted into functioning and not functioning.

How Stigma Works: The Spillover Mechanism

Here I want to bring in the NPF/CNI framework directly, because it gives us the most precise account I know of how stigma actually operates at the level of belief and cognition.

The Spillover Effect (SE) is one of the six components of the NPF score. In its technical formulation, it describes cross‑domain contamination resulting from weakened hippocampal‑prefrontal connectivity — the mechanism by which a belief about a person or thing in one domain bleeds into judgments about them in unrelated domains. In plain language: once you have categorised someone as belonging to a stigmatised group, that categorisation doesn’t stay in its lane. It spreads.

Consider what this looks like in practice. An autistic adult presents to a GP with persistent chest pain. The GP knows they are autistic. The GP also — consciously or not — carries associations between autism and difficulty with interoception, with communication of physical symptoms, with possibly exaggerating or misreading somatic signals. The chest pain report is processed through these associations. It may be taken less seriously, followed up less urgently, or interpreted as a manifestation of the autism rather than a cardiac event. The person’s testimony about their own body has been contaminated by the diagnostic label.

This is not a hypothetical. It is a documented pattern in medical literature — that autistic and neurodivergent people, women, and people of colour consistently have their pain reports treated with more scepticism than the same reports from neurotypical, male, white patients. The Spillover Effect is one mechanism that may explain why. The label produces a globally depressed credibility score — a prior expectation that the person’s testimony in any domain should be discounted, because they have been categorised as someone whose reports are unreliable.

What makes this particularly difficult to address is that the mechanism is largely automatic. The people whose judgments are contaminated by stigma are not usually aware of contaminating them. They are not making a conscious decision to trust the autistic patient less. They are doing what human cognition always does: using existing categorical knowledge to process new information efficiently. Stigma is not, primarily, a failure of character. It is a feature of how belief networks operate — and the NPF/CNI framework, offered here as an interpretive model rather than an established mechanism, gives us useful language for seeing it as such.

The Credibility Gradient

The consequences of the Spillover Effect compound across time and contexts. Each encounter in which a neurodivergent person’s testimony is subtly discounted reinforces a pattern — for the person receiving the scepticism, and for the systems in which it operates.

Consider a dyslexic adult who can perform adequately in short reading bursts — enough to pass, enough to get through a meeting, enough that colleagues see competence. They are told, repeatedly: you read fine. But they know the cost — the two hours of preparation for a meeting that takes others twenty minutes, the exhaustion that descends after sustained reading, the quiet terror of a long document with a short deadline. Over time, the gap between what others observe and what they actually experience begins to do something corrosive: they stop trusting their own account of their difficulty. If everyone says you read fine, the only remaining explanation is that you are weak, or lazy, or exaggerating. The external scepticism has become internal scepticism — not just injustice from outside, but a dismantling of one’s own epistemic standing from within.

This is one instance of what philosophers call epistemic injustice — the harm done to someone in their capacity as a knower, specifically as a result of their membership in a stigmatised group. It is a harm that operates on the self‑model: it undermines a person’s ability to trust their own testimony about their own experience.

For the systems: the consistent discounting of neurodivergent testimony means that the data those systems work with is systematically biased. Medical research that relies on self‑report — which is most medical research — will undercount the experiences of people whose self‑reports are taken less seriously. Educational outcomes that depend on children accurately communicating their needs will fail children whose communications are filtered through deficit‑based expectations. Employment systems that reward a particular kind of self‑presentation will lose the knowledge of people who cannot or will not perform that presentation.

In NPF/CNI terms, the concept of “disordered” is a high‑centrality belief: it sits at the centre of a belief network and organises a cluster of secondary inferences about competence, reliability, and credibility. Changing it requires not just updating one belief but revising a whole network of beliefs that the central one has organised around itself. That is precisely why stigma is so resistant to evidence — not because the people who hold it are stupid or malicious, but because the Ideological Scaffolding mechanism means the central belief keeps the secondary ones in place, and the secondary ones keep reinforcing the central one.

The Stories We Tell: Three Narratives and What They Cost

I want to spend a moment on the cultural level — not just the individual or clinical level — because stigma is not only a cognitive phenomenon. It is also a narrative phenomenon. The stories a culture tells about neurodivergence and disability shape the belief networks that individuals bring to their encounters with neurodivergent people.

Three dominant narratives are worth naming, because all three are problematic in different ways, and all three are active in the current cultural conversation.

The tragedy narrative. Neurodivergence and disability as inherently tragic — as lives diminished, futures narrowed, families burdened. This narrative generates sympathy, which it mistakes for understanding. It is the dominant frame in many parent‑facing autism charities and in much mainstream media coverage of disability. The problem is that it centres the experience of those adjacent to the neurodivergent person — parents, caregivers, teachers — rather than the experience of the person themselves. And it treats the condition as the source of suffering, rather than asking whether a better‑designed world might significantly reduce the suffering while leaving the person intact.

The superpower narrative. Neurodivergence as hidden gift — the secret advantage that, properly channelled, makes neurodivergent people exceptional. Silicon Valley’s romance with “thinking differently,” the cultural celebration of the obsessive genius. This narrative is understandable as a counterweight to the tragedy frame, and it does real good for some people. But it is dangerous in its own way: it makes the affordances of neurodivergence conditional on their usefulness to others. If you are autistic but not producing exceptional pattern recognition that benefits your employer, does the superpower narrative have anything for you? And it erases the cost — the real, daily difficulty that coexists with any genuine affordance.

The social construction narrative. Neurodivergence as primarily a social category — the idea that if the environment were different, there would be no disability, only difference. This is closer to the truth in many respects, and many of its strongest advocates are careful to acknowledge genuine difficulty while insisting that much of that difficulty is environmentally amplified rather than fixed. The nuanced version of this position is not saying that nothing is hard; it is saying that “how hard” is partly a function of what the world demands, and that better design could reduce the amplification considerably. The problem arises only when this slides into overclaim — into erasing the reality that chronic pain does not disappear in an accessible building, or that sensory overload is not purely a product of an insensitive world. The critique here is aimed at the overclaim, not at the insight.

The argument of this book sits between and beneath all three narratives. It holds that neurodivergent and disabled experience is real, that it involves genuine constraint and genuine cost, and that the social and architectural environment dramatically amplifies or diminishes those costs. The stories we tell matter because they shape the belief networks that determine whether neurodivergent testimony is trusted, whether neurodivergent knowledge is valued, and whether the full range of human minds is treated as a resource or a problem.

What NPF/CNI Adds to Epistemic Justice

The philosophical literature on epistemic justice — particularly Miranda Fricker’s foundational work on testimonial injustice and hermeneutical injustice — has done important work in naming the harms done to people in their capacity as knowers. Testimonial injustice is what happens when someone’s testimony is given less credibility than it deserves because of their group membership. Hermeneutical injustice is what happens when someone lacks the concepts to make sense of their own experience — because those concepts haven’t been developed yet, or haven’t reached them.

Both forms of injustice are endemic in the experience of neurodivergent and disabled people. The autistic person who cannot get their pain taken seriously; the ADHD person who has no framework for understanding why they find certain tasks genuinely impossible rather than just difficult; the dyslexic person whose difficulty with reading is treated as laziness rather than a processing difference — all of these are instances of epistemic injustice in Fricker’s sense.

What the NPF/CNI framework adds to this picture is an interpretive account of why these injustices are so hard to shift. It is not just that individual people hold biased beliefs that could be corrected with education. It is that those beliefs are entrenched — organised into high‑CNI networks that are resistant to revision, and amplified through Spillover Effects that make the contamination of credibility automatic and domain‑general. The injustice is not primarily located in individual bad actors. It is located in the belief architecture of the systems in which those individuals operate.

This matters for intervention. If the problem were individual bias, individual education would be the solution. But if the problem is systemic belief entrenchment — high‑CNI networks around “disorder,” “deficit,” and “unreliable testimony” — then individual education is necessary but nowhere near sufficient. What is needed is redesign of the belief architecture itself: the diagnostic categories, the institutional practices, the narrative frameworks through which neurodivergent and disabled people are routinely processed.

An Honest Reckoning

I want to be honest about something before this chapter closes. I am writing about stigma as someone who has been both subject to it and, certainly, perpetrator of it. I have held the belief, at various points in my life, that people whose behaviour or presentation I did not understand were simply choosing to be difficult, or were less capable than they appeared, or whose accounts of their experience I subtly down‑weighted. I did not know that was what I was doing. The Spillover Effect is not more legible from the inside than from the outside.

The late autism diagnosis gave me something useful here: it gave me a first‑person account of what it feels like to have your experience discounted by a system that was not built to receive it. That is not a credential — it does not give me authority over anyone else’s experience. But it is a corrective. It has made me more alert to the moments when I am processing someone’s testimony through a categorical filter rather than attending to what they are actually saying.

That alertness is, I think, the minimum that epistemic integrity requires. Not perfect freedom from categorical thinking — that is not available to human minds. But the practice of noticing when categories are doing your thinking for you, and asking whether they should be.

In the next chapter, we move from the social mechanics of stigma to the inner climate of consciousness — exploring mood, anxiety, and compulsion not as separate conditions but as the lived cost of integration under sustained mismatch.