What Does Neurodivergent Actually Mean? A Psychologist’s Perspective

By Dr. Tyler Gerdin, PsyD, ABPP | Gerdin Psychological Services

You’ve seen the word everywhere lately. Social media, wellness blogs, maybe in a conversation with a friend who recently got diagnosed with ADHD or autism. “Neurodivergent.” It has the feel of a term that means something important, but also one that’s been stretched in enough directions that it’s worth slowing down and asking: what does it actually mean?

As a psychologist, I find this question genuinely interesting. Because the honest answer is that “neurodivergent” sits at the intersection of science, philosophy, and identity, and understanding it well requires taking all three seriously.

Neurodivergent Meaning and Who the Term Applies To

At its most straightforward, neurodivergent refers to people whose brain development or cognitive functioning diverges meaningfully from what is statistically typical. Neurotypical, by contrast, refers to people whose neurology falls within the expected range. Neurodiversity is the broader concept, the idea that the full range of human neurological variation is a natural feature of our species, not a collection of errors to be corrected (Doyle, 2020; Goldberg, 2023).

The conditions most commonly included under the neurodivergent umbrella are autism, ADHD, dyslexia, dyspraxia, and other learning differences. Some frameworks extend the term more broadly to include certain psychiatric conditions, epilepsy, acquired brain differences, or even giftedness. There isn’t universal agreement on exactly where the boundary falls, and that’s not a flaw in the concept so much as an honest reflection of how complex human neurology actually is.

The Science and Philosophy Behind Neurodiversity

Here’s where things get genuinely interesting, and where I think a lot of popular discussions about neurodivergence go a little flat.

The scientific piece is about description: identifying how brains differ in their structure, function, and development, and what those differences mean for cognition, behavior, and daily functioning. We have decades of research on the neurobiological underpinnings of ADHD and autism, solid data on heritability and genetics, and well established findings on how these conditions affect attention, executive function, social processing, and sensory experience.

But the philosophical piece is about meaning: what do we make of those differences? Are they primarily deficits to be treated? Natural variations to be accommodated? Sources of identity? Features of a disability? The answer, and this is where clinicians sometimes tie themselves in knots, is that they can be all of these things, in different proportions for different people, in different contexts.

The neurodiversity movement, which grew largely from autistic self advocacy communities in the 1990s, made a critical argument: that many of the difficulties experienced by neurodivergent people arise not purely from their neurology but from a world designed by and for neurotypical people. Sensory overload in a fluorescent lit open plan office. Social exhaustion from navigating unwritten norms that nobody explicitly teaches. Executive function demands that assume a kind of linear, deadline driven self management that ADHD brains are specifically not wired for. In this view, disability is partly a product of the mismatch between a person’s neurology and their environment, not a fixed property of the person alone.

That’s a philosophically significant shift. And there’s real empirical support for it. It exists alongside an equally important clinical reality: that neurodivergent people often experience genuine distress, genuine impairment, and genuine need for support, not because society has failed to accommodate them (though it often has), but because the challenges are real and internal as well as external. The research literature urges clinicians to hold both (Baron-Cohen, 2017; Chapman et al., 2022). Rejecting all notions of disorder because difference shouldn’t be pathologized is a philosophical overcorrection. So is treating every neurological difference as a disease requiring normalization. Good clinical work lives in the space between those poles.

Why Neurodivergent Language Matters for Mental Health

One thing that strikes me in working with neurodivergent adults, many of whom come to evaluation having lived for decades without an accurate framework for their experience, is how much the language matters.

“Neurodivergent” is, for many people, a relief. It offers a way to name a pattern of experience that felt deeply personal, perhaps shameful, perhaps just confusing, and reframe it as a difference in how their mind works rather than a failure of character or effort. That reframing is clinically significant. Research suggests that stigma, social exclusion, and the chronic pressure to mask or conform are major contributors to the anxiety, depression, and burnout that neurodivergent people experience at higher rates than the general population (Black et al., 2024; Doyle, 2020). Having language for your experience, and a community that shares it, is protective.

At the same time, “neurodivergent” as an identity is distinct from “neurodivergent” as a diagnostic category, and both are distinct from “neurodivergent” as a scientific description. All three are legitimate. They’re just not the same thing, and conflating them can create confusion in both directions. Someone can strongly identify as neurodivergent without having a formal diagnosis. Someone can have a diagnosis without adopting that identity. A psychologist’s job is to be comfortable with all of that nuance rather than flattening it into a simpler story.

What a Neurodiversity Informed Psychological Evaluation Looks Like

For me, approaching assessment through a neurodiversity informed lens doesn’t mean abandoning diagnostic rigor. It means asking different questions alongside the diagnostic ones. Not just “does this person meet criteria for ADHD?” but “how does this person’s mind work, what are its genuine strengths, what are its genuine challenges, and where is the environment making those challenges harder than they need to be?”

It means taking seriously what someone tells me about their own experience. Neurodivergent people are often expert observers of their own inner lives, even when that inner life has been hard to communicate to others. It means being explicit about the difference between traits that are simply different and traits that are causing real impairment, and being honest that the same trait can be both, depending on context.

It also means recognizing that an accurate diagnosis is not a ceiling. It’s a starting point. Understanding how your brain works, genuinely understanding it, with specificity and nuance, is one of the most useful things a comprehensive evaluation can offer. Not a label that defines you, but a map that helps you navigate.

Neurodivergence Is Real, and So Is the Need for Careful Evaluation

The rise of neurodivergent as a cultural concept has brought something valuable into the mainstream: the recognition that there are many different ways of having relationships, that difference is not the same as deficiency, and that a lot of what looks like failure from the outside is actually a person trying very hard in a system that wasn’t built with them in mind.

That recognition is worth holding onto, even as we also hold onto the clinical responsibility to take distress seriously, to measure carefully, and to offer support that is grounded in what the evidence actually shows.

If you’re curious about what a neurodiversity informed evaluation might reveal about how your own mind works, I’d be glad to talk. Reach out at drgerdin@gerdinpsych.com or 509-676-4313.

Dr. Tyler Gerdin, PsyD, ABPP is a board certified clinical psychologist in Spokane, Washington, specializing in psychological and neuropsychological assessment for neurodivergent teens and adults.