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Autism was key to human evolution, new study claims

AGXStarseed

Well-Known Member
(Not written by me)

  • Autistic people can have a range of skills such as artistic ability or good memory
  • A high number of people not diagnosed with autism have autistic traits too
  • The incorporation of some of these skills into a community would have played a vital role in the development of specialists
  • We know through genetic research that autism and autistic traits have been part of what makes us human for a long time


When you think of someone with autism, what do you think of?

It might be someone with a special set of talents or unique skills – such as natural artistic ability or a remarkable memory.

It could also be someone with enhanced abilities in engineering or mathematics, or an increased focus on detail.

This is because despite all the negative stories of an 'epidemic of autism' most of us recognise that people with autism spectrum conditions bring a whole range of valued skills and talents – both technical and social – to the workplace and beyond.

3EAFBC9C00000578-4354412-image-a-33_1490645736000.jpg

Research has shown that some key autism genes are part of a shared ape heritage, which predates the 'split' that led us along a 'human' path. This was when our ancient ape ancestors separated from other apes that are alive today. Other autism genes are more recent in evolutionary terms – though they are still more than 100,000-years-old


Research has also shown that a high number of people not diagnosed with autism have autistic traits.

So although many of these people have not been officially diagnosed, they might be were they to go for autism-related tests.

These people were unaware they have these traits, don't complain of any unhappiness, and tend to feel that many of their particular traits are often an advantage.

This is what we mean when we talk about the autism spectrum – we are all 'a bit autistic' – and we all fit somewhere along a spectrum of traits.

And we know through genetic research that autism and autistic traits have been part of what makes us human for a long time.

Research has shown that some key autism genes are part of a shared ape heritage, which predates the 'split' that led us along a 'human' path.

This was when our ancient ape ancestors separated from other apes that are alive today.

Other autism genes are more recent in evolutionary terms – though they are still more than 100,000-years-old.

Research has also shown that autism for the most part is highly hereditary.

Though a third of the cases of autism can be put down to the random appearance of 'genetic mistakes' or spontaneously occurring mutations, high rates of autism are generally found in certain families.

And for many of these families this dash of autism can bring some advantages.

All of this suggests that autism is with us for a reason.

And as our recent book and journal paper show, ancestors with autism played an important role in their social groups through human evolution because of their unique skills and talents.

Going back thousands of years, people who displayed autistic traits would not only have been accepted by their societies, but could have been highly respected.

Many people with autism have exceptional memory skills, heightened perception in realms of vision, taste and smell and in some contexts, an enhanced understanding of natural systems such as animal behaviour.

And the incorporation of some of these skills into a community would have played a vital role in the development of specialists.

It is very likely these specialists would then have become vitally important for the survival of the group.

One anthropological study of reindeer herders said: 'The extraordinary old grandfather had a detailed knowledge of the parentage, medical history and moods of each one of the 2,600 animals in the herd.

'He was more comfortable in the company of reindeer than of humans, and always pitched his tent some way from everyone else and cooked for himself. His son worked in the herd and had been joined for the summer by his own teenage sons, Zhenya and young Sergei.'

Further evidence can be found in traits shared between some cave art and talented autistic artists – such as those paintings found in the Chauvet Cave, in southern France.

This contains some of the best preserved figurative cave paintings in the world.

The paintings show exceptional realism, remarkable memory skills, strong attention to detail, along with a focus on parts rather than wholes.

These autistic traits can also be found in talented artists who don't have autism but they are much more common in talented autistic artists.

But unfortunately despite the potential evidence, archaeology and narratives about human origins have been slow to catch up.

Diversity has never been a part of our reconstructions of human origins.

It has taken researchers a long time to move beyond the image of a man evolving from an ape-like form that we so typically associate with evolution.

It is only relatively recently that women have been recognised as playing a key role in our evolutionary past – before this evolution narratives tended to focus on the role of men.

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The Chauvet Cave paintings (pictured) in southern France show exceptional realism, remarkable memory skills, strong attention to detail, along with a focus on parts rather than wholes. These autistic traits can also be found in talented artists who don't have autism but they are much more common in talented autistic artists


So it's no wonder that including autism – something which is still seen as a 'disorder' by some – is considered to be controversial.

And this is undoubtedly why arguments about the inclusion of autism and the way it must have influenced such art have been ridiculed.

But given what we know, it is clearly time for a reappraisal of what autism has brought to human origins.

Michael Fitzgerald, the first professor of child and adolescent psychiatry in Ireland to specialise in autism spectrum disorder, boldly claimed in an interview in 2006 that: 'All human evolution was driven by slightly autistic Asperger's and autistic people.

'The human race would still be sitting around in caves chattering to each other if it were not for them.'

And while I wouldn't go that far, I have to agree that without that 'dash of autism' in our human communities, we probably wouldn't be where we are today.


Penny Spikins, Senior Lecturer in the Archaeology of Human Origins, University of York

This article was originally published on The Conversation. Read the original article.

Source: Autism was key to human evolution claims new study | Daily Mail Online
 
i dont know what to think about this, i dont think autism is simply an evolutionary set of traits,how would that explain those of us with severe/moderate classic autism? or HFAs/ aspies who are severely affected? where do we all come along in this theory?
i dont think everyone has a bit of autism, just because you have a similar trait doesnt mean it stems from having autism wiring in your brain,its like those people who think they have brain cancer because they get a bad headache,in almost all cases its just a bad headache and not cancer,which is the same for all those people who think they have 'a bit' of autism,you either have autism or you dont,you cant have a 'bit' of autism, to be under the label of autism/autistic you have to have the triad of impairments as well as a set of basic traits.
 
i dont know what to think about this, i dont think autism is simply an evolutionary set of traits,how would that explain those of us with severe/moderate classic autism? or HFAs/ aspies who are severely affected? where do we all come along in this theory?
i dont think everyone has a bit of autism, just because you have a similar trait doesnt mean it stems from having autism wiring in your brain,its like those people who think they have brain cancer because they get a bad headache,in almost all cases its just a bad headache and not cancer,which is the same for all those people who think they have 'a bit' of autism,you either have autism or you dont,you cant have a 'bit' of autism, to be under the label of autism/autistic you have to have the triad of impairments as well as a set of basic traits.

Maybe LFA happens when there are too many autistic traits or that they are too extreme (as too much of anything can be problematic)?

Also, if we take into consideration that every autistic people are autistic in a different way, and that the absence of one specific trait doesn't mean the person isn't autistic, I suppose autism is simply a combination of traits from a cluster of autistic traits, and if you have enough of these traits you qualify as autistic. That would mean that everyone could have a dash of autism as autism would just be a cluster of traits (and the fact that a family of non-autistics who have some traits similar to autism are more likely to have an autistic child seem to fit this theory)
 
It's like sickle cell anemia.

One copy of the gene and you are more resistant to malaria; a tremendous survival advantage in areas where malaria is common. But two copies, and your blood cells lessen your survival odds. Though this is less likely.

We've only begun studying genetics, and it turns out there are lots of genetic combinations where having a little is better than average, but too much creates difficulties.

FWIW, I like the article a lot and think it makes good points. And, I gotta admit, take my high school graduating class; the "normal" people weren't headed to med school or MIT. The "normal" people went crazy for football, skated by in their classes, and were not even headed for college.

Nice people, some of them, but not anything you could advance a civilization on.
 
'The human race would still be sitting around in caves chattering to each other if it were not for them.'

Ha! I got my smile for today.
 
I read somewhere that the development of modern human society was the result of wheats ability to propagate itself.

Actually, it was more the storage ability it offered. It didn't go bad, it was made into things that didn't go bad easily, etc.
 
(Not written by me)
Michael Fitzgerald, the first professor of child and adolescent psychiatry in Ireland to specialise in autism spectrum disorder, boldly claimed in an interview in 2006 that: 'All human evolution was driven by slightly autistic Asperger's and autistic people.

'The human race would still be sitting around in caves chattering to each other if it were not for them.'
And I reckon that if the entire human race were autistic, some of them would still be stuck in caves obsessing over the finer details of rock formation. ;)
 

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