Neurodivergence: the background

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As I have already noted this morning, I believe that President Trump's announcement on autism, made last night, is a part of his politics of hate, with all that flows from that being almost too difficult to contemplate.

This post seeks to do two things:

  • It defines the conditions that represent the forms of neurodivergency I am discussing.
  • It discusses why these conditions have persisted due to the evolutionary advantage they have provided, at least to some individuals who have them (and, in this regard, I am aware that autism types 1 and 3 are distinct and should, ideally, not be grouped under the same name as a result).

Definitions

The conditions I am discussing can, very briefly, be described as follows. Much more information can, of course, be found on the web:

  • Autism Level 1 – Those with this condition may require some educational and other support, e.g., in the workplace. Social communication can be challenging for them; they typically prefer routines, but they can usually live fairly or entirely independently. Many people they engage with will be unaware that they have this condition. Many are exceptionally good at masking it.
  • Autism Level 2 – These people might need more or even substantial support as they have bigger difficulties with communication and flexibility, and daily support is often required.
  • Autism Level 3 – Those with this level of autism frequently need very substantial support: they will face major challenges in communication and behaviour, often requiring intensive help.
  • ADHD ( Attention Deficit Hyperactivity Disorder) is a recognised pattern of behaviour often displaying inattention, hyperactivity, and impulsivity. It is often associated with high energy, creativity, and a tendency to seek novelty. Contrary to popular perception, this is not a condition only affecting males, and people do not grow out of it; it is a lifelong condition.  Some people benefit from medication to help manage ADHD, but not all do. Many people who those with ADHD engage with will be unaware that they have this condition. Many with ADHD are, like those with autism level 1, exceptionally good at masking it.
  • AuDHD. This describes someone who is both autistic and ADHD. They combine deep focus and structure with spontaneity and fast-shifting attention. This condition has only been medically recognised, officially, since 2013.

Evolutionary advantages

(AI has been used in this section, but editing has been undertaken to ensure consistency with my reading on this issue.)

One of the things rarely said is that autism, ADHD and AuDHD exist in society because they have always had a purpose. That is why I suggest neurodivergency, which autism, ADHD, and AuDHD can be described as, is widespread. Evolution has permitted this because these conditions can be behaviourally adaptive. It is likely that 15% of all people in any society might be described as such. That is not, then, an accident of human design. These adaptations have helped human societies to flourish.

Firstly, consider autism. Autistic traits such as attention to detail, persistence, heightened sensory awareness, and deep pattern recognition bring immense value. In small human communities in our past, these were the individuals who observed the changes in the seasons, tracked animals, remembered where food and water could be found, and preserved culture through memory. They did not follow the crowd, and so when conformity might have led to disaster, they were the ones who insisted on trying something different. What is now labelled as autistic focus was, in evolutionary terms, specialisation, or a way of making sure that no community ever forgot how to do the things it needed to survive.

Secondly, think about ADHD. Traits such as impulsivity, novelty-seeking, high energy, and rapid reaction have obvious value in the history of human survival. ADHD individuals were the explorers who would take the risk of going over the hill, the hunters who had the energy to persist, and the people who thought in unexpected ways. Their willingness to break rules, to try the untried, and to adapt quickly gave groups the flexibility that rigid conformity never could. In modern classrooms, those same traits may be stigmatised, but in the evolutionary environment of our species, they were strengths.

Thirdly, there is the combination called AuDHD. At first sight, autism's drive for structure and ADHD's drive for change appear contradictory. But evolution often creates hybrids precisely because they expand the range of possibilities. Someone with AuDHD can hyperfocus on a subject with intensity and then leap laterally across ideas when new information appears. They can be both cautious and bold. They can persist when it matters and take risks when that is what survival demands. AuDHD is not a flaw: it is a double toolkit within a single mind.

Finally, what matters most is that societies need cognitive diversity. Human beings did not survive because we were all alike. We survived precisely because we were not. Groups that had both the careful observers and the risk-takers, the detail-watchers and the big-picture thinkers, the guardians of tradition and the pioneers of change, were the groups that endured. Evolution preserved autism and ADHD not because they were problems to be eliminated, but because they were essential to collective survival.

The problem within our present culture is that we insist on viewing these traits through a medicalised lens, as if their only meaning is deficit. That is nonsense. Autism, ADHD, and AuDHD are not disorders in the sense of being evolutionary mistakes. They are forms of human variation that make us more resilient, although some undoubtedly need assistance with managing these conditions in the world in which we now live. If we were wise, we would stop asking how to cure them and start asking how to value them because in a world that faces the crises of climate breakdown, inequality, and the failures of conventional economics, the people who think differently may be the ones who save us.

And it is these people that Trump wants to 'cure' of a condition which is part of who they are, which is a truly terrifying prospect.


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