Neurodiversity & the Philosophy of Science

(exchanges between 03/24/2026 - 03/27/2026 on LinkedIn)

The following exchange emerged from public discussions concerning the relationship between neurodiversity theory, empiricism, and the philosophy of science. The dialogue explores broader tensions surrounding operationalization, epistemological pluralism, discourse analysis, and the role of classification systems within scientific inquiry. While neurodiversity is often critiqued for lacking singular measurable referents, the exchange illustrates how contemporary neurodiversity scholarship increasingly functions as a critical framework for interrogating how concepts such as “normal,” “disordered,” and “typical” are themselves produced, operationalized, and legitimized across disciplines.

Richard Laitinen

The concept of neurodiversity—the view that variations in neurological functioning constitute natural and valuable forms of human diversity—has gained substantial social and cultural traction but remains scientifically unsubstantiated. From the standpoint of empirical science, neurodiversity fails to meet essential criteria of validity, including operational definition, objectivity, standardization, falsifiability, and predictive power. The term lacks measurable referents: there are no standardized instruments or physiological, behavioral, or psychometric markers that reliably distinguish “neurodiverse” from “neurotypical” individuals. As a result, it offers no means of quantifying what neurodiversity is or how it may be assessed across individuals or populations.

In addition, the neurodiversity paradigm functions effectively as a social philosophy but fails as a scientific framework. Until it is grounded in operationally defined, quantifiable, and falsifiable measures of neurological variation, the concept remains scientifically void, offering rhetorical rather than empirical value in understanding human neurocognitive differences such as those presented by individuals labelled as “having” autism.

Cole Denisen, PhD

Richard Laitinen This critique makes sense if neurodiversity is treated as a discrete scientific variable—but that’s not really what it is.

Neurodiversity functions more as a paradigm than a measurable construct. It doesn’t attempt to define a single, quantifiable entity; it reframes how we understand neurological variation in the first place.

Not all scientifically relevant concepts operate at the level of direct measurement. Many—like intelligence, mental illness, or even race—are historically and socially constructed categories that are operationalized in multiple, contested ways rather than anchored to a single objective marker.

In that sense, the absence of a singular metric doesn’t make neurodiversity scientifically void—it highlights that the boundaries of categories like “neurotypical” and “disordered” are themselves products of interpretation, classification, and power.

From that perspective, neurodiversity is less about replacing empirical science and more about interrogating the assumptions that structure it.

Richard Laitinen

Cole Denisen, PhD Your defense holds if neurodiversity is treated as a philosophical lens—but that does not establish it as a scientific construct.

Science requires constructs to be tied, however imperfectly, to observable and measurable variables. While higher-order categories (e.g., intelligence, mental illness) are indeed complex and historically shaped, they are still operationalized through replicable measurement systems, testable predictions, and converging lines of evidence.

Reframing alone does not confer scientific status. A paradigm can guide inquiry, but without clear operational definitions, it cannot generate falsifiable hypotheses or support cumulative knowledge building.

The absence of a singular metric is not disqualifying—but the absence of coherent measurement boundaries is limiting. When category membership expands or contracts based primarily on interpretive or social criteria, reliability and validity become unstable.

From that perspective, neurodiversity may serve as a useful sociocultural critique, but it operates adjacent to science rather than within its methodological core.

Richard Laitinen

Richard Laitinen and at its core “neurodiversity” is about variation, which is a neccessary, but not sufficient aspect of either social or ortsonal evolution. Darwin can tell you what the complete formula is.

Cole Denisen, PhD

Richard Laitinen It is true that *some* science requires constructs to be tied to observable and measurable variables—and I think this is where practitioners often struggle with the framing.

Neurodiversity emerges from a critical epistemic framework. It is not attempting to function as a discrete, measurable construct, but rather to interrogate how categories like “normal,” “disordered,” and “typical” are produced in the first place.

Fields such as disability studies, crip theory, and queer theory, for example, use approaches like discourse analysis to systematically examine patterns in language, classification, and institutional practice. These are not attempts to avoid rigor, but to align methods with the kinds of questions being asked.

From that perspective, the issue is not whether these approaches are “less scientific,” but that they operate within a different epistemic framework—one that treats knowledge, categories, and even standards of measurement as objects of inquiry rather than neutral foundations.

Richard Laitinen

Cole Denisen, PhD It is true that all, not “some”, science ultimately requires constructs to be tied to observable and measurable variables—even when those ties are indirect or probabilistic.

The apparent difficulty in framing often arises not from a limitation of science, but from the level of abstraction at which a concept is being discussed. Higher-order constructs can exist, but they must still cash out in terms of observable effects, measurable relations, or testable predictions.

Indirect measurement, latent variables, and multi-method convergence are common in science, but they do not remove the requirement for operational contact with the empirical world. They extend it.

When practitioners experience tension here, it is often because a construct is being used descriptively or rhetorically without a clear pathway to measurement, rather than because science permits constructs to remain unmeasured.

From that perspective, the issue is not that science struggles with such constructs, but that some constructs have not yet been specified in a way that allows them to function scientifically.

Richard Laitinen

Cole Denisen, PhD Neurodiversity works well as a critique—but that also clarifies its role.

If it’s framed as a critical epistemic lens, then it’s operating at a philosophical and sociocultural level, not as a scientific explanatory construct. It can interrogate how categories like “normal” and “disordered” are produced, but that’s different from identifying variables that allow prediction and control.

From an RFT perspective, those categories are not natural kinds—they are relational products. They emerge through histories of multiple exemplar training, contextual control, and transformation of function. In that sense, they are constructed—but they are still analyzable.

And that’s the key point: being socially produced does not place something outside science. It simply means the controlling variables are more complex and often distributed across verbal communities.

So the productive move is not to replace classification with critique, but to connect them.

What are the functional relations?

What are the measurable effects?

Under what conditions do these labels alter behavior, treatment decisions, and outcomes?

That’s where critique becomes science.

Cole Denisen, PhD

Richard Laitinen I think this clarifies your position well, and I agree that empirical contact—whether direct or indirect—is central to many scientific approaches. Where we may be getting hung up is that your definition reflects a relatively narrow account of what counts as empirical inquiry, which may accurately describe your field, but may not fully capture the range of methods used across different fields to generate and evaluate evidence.

Fields like sociology, anthropology, and parts of psychology regularly study classification systems, diagnostic boundaries, and institutional practices as objects of inquiry—not simply as precursors to measurement, but as phenomena in their own right. In those cases, the “empirical” is not limited to quantifiable variables, but includes patterns in discourse, categorization, and social organization.

The issue is not only whether a construct like neurodiversity can be operationalized, but how existing constructs—such as “disorder” or “typicality”—have been operationalized, and what assumptions are built into those processes.

The method follows the question.

Richard Laitinen

Cole Denisen, PhD You’re assuming those areas of inquiry qualify as sciences, which needs to be agreed upon. Patterns of discourse, categorization and social organization are themselves phenomena that can be scientifically studied as organism-environment contingencies and meta-contingencies that act and evolve in non-linear evolution. They do not lay outside of science. That is a Newtonian assumption, not a modern science assumption. As said earlier “neurodiversity” is simply a synonym for “variation”, neither of which plays outside of the reality of selection and retention. If you want to be scientific, rather than pretending to be so, then do the work and carry out the investigations within the known boundaries of empiricism

Cole Denisen, PhD

Richard Laitinen You're assuming a single, agreed-upon definition of science—which is precisely what is in question. This clarifies that our disagreement is not really about whether discourse, categorization, or social organization can be studied empirically—I agree that they can.

The disagreement is over whether they must be translated into a particular framework (e.g., organism–environment contingencies) in order to count as legitimate inquiry. In other words, this comes down to how we define what counts as science. There is a substantial body of scholarship that has grappled with these questions over time, and they are unlikely to be resolved in a brief exchange like this.

Suffice to say that different fields operate with different epistemic assumptions, methods, and standards of explanation. To treat only one of those approaches as genuinely scientific is not a neutral empirical conclusion, but a philosophical position about the scope and boundaries of science.

You’re listing criteria that are central within certain experimental traditions and treating them as universally defining of science. That’s the essentialist move I’m pointing to.

Many sciences—especially historical, theoretical, and observational fields—do not operate through IOA or identical forms of replication, yet are uncontroversially considered scientific.

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