Across the world, families and individuals are waiting. Waiting for an appointment. Waiting for a report. Waiting for a label that gives them permission to act. But for hundreds of thousands of people, that wait is the problem, feeling stuck in limbo, unsure where to turn while life carries on around them.
The numbers are stark. In the United States, nearly two-thirds of autism assessment centres have wait times longer than four months. Fifteen percent report waits of over a year, or waitlists so long they’ve stopped accepting new referrals altogether.
In New Zealand, a formal dyslexia assessment costs between $1,000 and $3,500 and requires a registered Educational Psychologist or C-Grade Assessor. There’s often a waiting list on top of that. In the UK, private spending on ADHD and autism assessments more than doubled in a single year between 2023/24 and 2024/25, as families turned to private providers to escape public system delays.
The barriers aren’t just about time. Cost, geography, language, and systemic bias all affect who gets diagnosed and when. Research consistently shows that women, people from ethnic minority communities, and those in lower-income households face longer waits and higher rates of missed diagnosis.
While families navigate all of this, the person who needs support is still waiting.
The Davis approach was not created in a clinic or a research institution. It was created by Ron Davis, a man who grew up as a non-speaking autistic individual with severe dyslexia. He had no formal education and no diagnosis, at a time when autism affected roughly one in 660,000 people.
Ron didn’t have access to a diagnostic pathway. What he had was a direct, lived experience of how a neurodivergent mind works from the inside.
Ron’s early life gave him something that conventional frameworks rarely offer: an inside view of the neurodivergent experience. His discoveries didn’t start with symptom checklists or diagnostic criteria. They started with clay, with color, with the way confusion creates perceptual distortion — and with the question of what happens when you remove that distortion.
That origin matters. It means the Davis approach was never built around diagnostic categories in the first place.
Conventional support for neurodivergent individuals tends to follow the diagnosis. You get the label, then you get the help. The label determines the program, the specialist, the funding pathway, the accommodations.
The problem is that this model has significant limitations. It pathologizes natural cognitive differences, treating different ways of thinking as deficits. It can’t explain why strengths and challenges coexist, or why diagnostic categories overlap so heavily. And it consistently misses the underlying mechanism driving the difficulties.
Research bears this out. Among autistic individuals, 50–70% also meet criteria for ADHD. Between 65–73% experience dyslexia-type reading difficulties. Co-occurrence is the norm, not the exception, which means a diagnosis of one condition rarely tells the full story.
The Davis view is that autism, ADHD, dyslexia, dyscalculia, and dyspraxia are not separate disorders with unrelated causes. They are different expressions of the same underlying mechanism: disorientation, a natural, automatic shift in perception that becomes a habitual default when confusion, stress, or sensory overload goes unaddressed.
Once you understand that mechanism, the diagnostic category becomes less important than the person in front of you.
Because the Davis approach works from the root cause rather than the label, it doesn’t require a diagnosis to begin. A facilitator works with how an individual actually thinks and perceives, their sensory experience, their relationship with the physical world, their capacity for orientation and self-regulation.
A diagnosis doesn’t change that process. It doesn’t change what a facilitator does, or how effective the work can be.
This matters enormously for the families currently sitting on a waitlist. It matters for adults who have managed their whole lives without ever receiving a formal assessment. It matters for people in communities where diagnosis is expensive, inaccessible, or culturally complicated.
As Ron himself put it: all knowledge is experiential. You can’t do this to someone, or for them. They have to do it themselves. The starting point is what’s there — not what a report says.
To be clear: Davis is not a substitute for the diagnostic process, and we don’t diagnose. For many people, diagnosis opens doors, to school accommodations, to funding, to understanding. If you’re pursuing assessment, that process has real value and is worth continuing.
The point is simply that support doesn’t have to wait for a diagnosis.
Davis programs can run alongside a diagnostic process. Many families begin Davis while still on a waitlist. Others come to us years after a diagnosis, having tried other approaches. Some come with no diagnosis at all and find that the work is just as relevant, just as effective.
What matters is not the label. It’s the person.
How the Davis Method works The Davis approach is built around a simple idea: if you understand the root cause of a difficulty, you can address it directly. Read more about the method behind the programs. → The Davis Method
Ron Davis: from non-speaking autism to changing lives Ron Davis grew up as a non-speaking autistic child with no formal education. His story — and the discoveries he made along the way — became the foundation for everything Davis does. → The Ron Davis story
What Davis programs are available? From autism and ADHD to dyslexia and dyscalculia, Davis offers specialist programs for children and adults of all ages. → Explore Davis Solutions
Hear from families and individuals Real experiences from people who have been through Davis programs. →
Find a Davis facilitator Davis facilitators work with clients worldwide, in person and online. → Facilitator Directory