Most of the major traditions in Western social and political theory assume a cognitively uniform population. The contracting parties in social-contract theory are "roughly equal" in rational capacity. The participants in deliberative democracy process discourse in broadly the same way. Behavioral economics catalogs cognitive biases as universal deviations from rationality. Educational theory assumes a learner who can be reached through the right pedagogy. Utilitarian theory aggregates preferences across a population assumed to experience wanting and satisfaction in structurally similar ways.
The neurodiversity paradigm — the proposition, advanced by the sociologist Judy Singer in 1998 and given its major popular treatment in Steve Silberman's NeuroTribes (2015), that neurological variations such as autism, ADHD, dyslexia, and related conditions are natural features of human cognitive diversity rather than deficits to be corrected — poses a challenge to this assumption. If cognitive processing differs structurally across neurotypes, then the models of rationality, communication, preference, and learning that underlie these theories may need to be revised, or at least qualified. The challenge is not that these theories are wrong, but that they rest on an unexamined assumption about cognitive uniformity that the neurodiversity literature has begun to question and that political philosophy has not yet seriously engaged.
The social contract. From Hobbes through Locke through Rousseau through Rawls, the contracting parties are assumed to be "roughly equal" in cognitive capacity and to reason in broadly similar ways. Rawls's "original position" imagines agents behind a veil of ignorance, but the rationality they exercise behind that veil is implicitly neurotypical: sequential, deliberative, consistent in preference-ordering.
Communicative rationality. Habermas's theory of communicative action assumes that the ideal speech situation involves participants who process discourse in roughly the same way — who can sustain linear argument, read pragmatic cues, and converge on consensus through a shared mode of reasoning.
Behavioral economics. Kahneman and Tversky's heuristics-and-biases program catalogs systematic deviations from rational-choice models but treats them as uniform deviations, shared across the population. If cognitive processing differs structurally across neurotypes, the biases may not be uniform either.
Education. Dewey, Freire, and Bruner all assume a learner who can be reached through the right pedagogy, but the neurodiversity paradigm suggests that "the right pedagogy" may need to be plural in ways that go beyond learning-style preferences.
The utilitarian tradition. If utility functions vary not just in content (what people want) but in structure (how people experience wanting, satisfaction, and decision), then the aggregation problems at the heart of utilitarian theory become harder.
None of this invalidates these traditions, but they share an unexamined assumption about cognitive uniformity that the neurodiversity literature has begun to challenge, and that political philosophy has not yet picked up.
The relationship between neurodiversity and Mass Incarceration is documented. Estimates put ADHD prevalence in U.S. prisons at 30–40 percent, compared to roughly 5 percent in the general population. Autism, traumatic brain injury, fetal alcohol spectrum disorder, and learning disabilities are all overrepresented in carceral populations. The mechanisms are fairly straightforward: impulsivity and executive-function differences increase the likelihood of behaviors the criminal-justice system punishes; difficulty reading social cues and responding to authority in expected ways leads to escalation at every stage from police encounter through sentencing; and the system's procedural demands — sitting still, maintaining eye contact, following complex proceedings, demonstrating "appropriate" affect — are neurotypical norms enforced as legal requirements.
No single thinker has produced a full synthesis. The figures who come nearest:
Martha Nussbaum — Frontiers of Justice (2006) extends the capabilities approach to people with cognitive disabilities, arguing that Rawlsian contractarianism cannot accommodate them because it assumes "roughly equal" parties.
Michel Foucault — Madness and Civilization (1961) remains the foundational account of how Western society has constructed cognitive and psychological difference as pathology requiring confinement.
R. D. Laing — the anti-psychiatry movement's insistence that "schizophrenia" might be a comprehensible response to an incomprehensible situation anticipated the neurodiversity paradigm's refusal to treat difference as disease, though Laing's framework was existential-phenomenological rather than cognitive.
Alasdair MacIntyre — Dependent Rational Animals (1999) argues that vulnerability and dependence are central features of human life, not edge cases to be handled after the "normal" theory is built.
Eva Feder Kittay — Love's Labor: Essays on Women, Equality, and Dependency (1999) argues that the liberal tradition's emphasis on independence and autonomy is built on a false picture of what human life actually looks like.
Ian Hacking — The Social Construction of What? (1999) and his work on "making up people" examines how diagnostic categories do not merely describe but create kinds of people — relevant to how "ADHD" and "autism" function as social as well as clinical categories.
The neurodiversity framework is itself contested — and contested not by reactionaries but by families and individuals living with severe autism who argue that the movement erases them. The developmental neurobiologist Moheb Costandi, writing in Aeon ("Why the Neurodiversity Movement Has Become Harmful"), and advocates such as Jill Escher (National Council on Severe Autism) and Thomas Clements (The Autistic Brothers, 2018), have articulated a critique worth taking seriously:
The severity spectrum. The DSM-5 lists three severity levels for Autism Spectrum Disorder. About 40 percent of autistic children do not speak at all; more than half have an intellectual disability (IQ below 70). People at Level 3 require full-time care for life. The neurodiversity movement is dominated by Level 1 ("high-functioning") voices — articulate, independent, often professionally successful — who describe autism as a "gift" or "superpower." For families whose children will never live independently or communicate verbally, this framing can feel like an erasure of real suffering.
The medical model. Neurodiversity advocates tend to reject the medical model of autism wholesale, in favor of a social model that attributes difficulties to discrimination rather than neurobiological difference. But current neuroscience identifies concrete developmental mechanisms — abnormalities in brain cell numbers, white-matter structure, synaptic pruning — and strong genetic components. Dismissing the medical model entirely means dismissing treatments that some families and individuals actively want.
Selection bias in research. Because advocacy has focused on verbal, cognitively intact autistic people, research has followed: individuals with intellectual disabilities are systematically underrepresented in autism research, even though they constitute nearly half the autistic population.
The ADHD case. Russell A. Barkley, one of the leading clinical researchers on ADHD, has argued that framing ADHD as a "different cognitive style" rather than a disorder minimizes real impairments in executive function, self-regulation, and long-term outcomes. His research documents elevated rates of driving accidents, financial problems, relationship difficulties, substance abuse, and reduced life expectancy among people with untreated ADHD. Barkley's position is that the medical model and the treatments it supports (including medication) are not obstacles to flourishing but preconditions for it.
The romanticization problem. The "different, not disabled" framing works most persuasively at the milder end of the spectrum — ADHD, dyslexia, Level 1 autism — where genuine strengths coexist with genuine difficulties and where accommodation can make a real difference. It becomes harder to sustain for Level 3 autism, or for conditions with high rates of co-occurring epilepsy, self-injury, and psychiatric hospitalization.
The observation that political theory assumes a neurotypical rational agent holds regardless of whether neurological variation is framed as "natural diversity" or "neurodevelopmental disability." But any serious engagement with cognitive diversity will have to reckon with the full spectrum, including people whose needs are better met by the language of care, dependency, and support than by the language of identity and pride — which is where Nussbaum's capabilities approach and Kittay's philosophy of care become relevant, and where the "different, not deficient" framing, taken alone, is not enough.
The book or sustained philosophical work that takes cognitive diversity seriously as a challenge to the assumptions of Western political and social theory has not been written. The pieces exist — Nussbaum's capabilities work, Foucault's archaeology of normality, the empirical literature on neurodivergent overrepresentation in the criminal-justice system, the neurodiversity movement's own contested self-understanding — but they have not been assembled.