@ekverstania How I define autism is an interesting question.
@ekverstania I do not have time to do a blog post on this so I will do my best to cover here briefly.
@ekverstania First point is that, I think autism is complex, it is not a simple concept. Any such approach to do so, is going to have issues. At the same time, depending on the situation, I can be happy working with such models, like DSM-5 autism criteria.
@ekverstania I define autism as an interactive construct, that is dependent on: (1) a person's autistic features; (2) the situation the autistic person is in at any given moment; (3) the bias of each observer, the autistic person has.
@ekverstania To get an accurate representation of what autism is, you need to map multiple dimensions. It is an interactive phenomenon with its environment. There are multiple reasons for this.
@ekverstania First off, each autistic person will have their own constellation of features that are attributed to autism. These features will also interact with any comorbids & vice versa. This is with a person being by themselves and relaxed.
@ekverstania We know that the features of autism, vary depending on age of the person. The situation the person is in. A highly distressed autistic person, is typically displays more pronounced autism features.
@ekverstania So you have to model environment and situation an autistic person is in, in order to adequately show how it presents in any given moment.
@ekverstania It is even more complicated than that, as an observer's bias will affect, how they interpret where autism starts and stops.
@ekverstania We know clinician bias, is a barrier to diagnosing autistic females. How caregiver's bias, can deny certain opportunities to their autistic Child & Young Person's.
@ekverstania A lot of this is from double empathy problem research. Wider knowledge of each person around what autism is.
@ekverstania I would have different axis for each individual factor. It is a multi-dimensional phenomenon. While a person is autistic, autism as a phenomenon is broader than that.
@ekverstania If this makes sense?
@ekverstania @threadreaderapp please could you unroll?
@ekverstania I will also add that most autistic persons do not want autism to be divided. We know from debate autistic persons vs person with autism, that majority view is generally accepted to represent community's wishes.
@ekverstania Which makes sense for "autistic features" to not be dividable either; this supported by evidence that autism cannot be divided.
@ekverstania @threadreaderapp please could unroll?
@ekverstania Thinking about it, one can take a similar approach to for PDA. So one would have "Demand Avoidance" features, which would be the core ones as set out here for example.
@ekverstania These core demand avoidance features would be interactive with the situation they are in and co-morbids that a person has, obviously how they present is also impacted by the age of a person.
@ekverstania Also "demand avoidance" features being transactional with their environment fits into current understanding taken in PDA literature.

Then what you call PDA is then socially constructed by the interaction of demand avoidance features and observers bias.
@ekverstania So it explains that Help4Psychology Extreme Demand Avoidance and Rational Demand Avoidance groups are arbitrary distinctions.
@ekverstania Which again makes sense as the distinction between Rational Demand Avoidance group and Extreme is arbitrary; due to various factors. Especially when many CYP in RDA group, cannot rationalise their demand avoidance, so it would be irrational too.
@ekverstania So demand avoidance features, would represent a broader group of people, including those at lower end of PDA diagnostic thresholds, such as seen in Gillberg et al (2015), or diagnosed using the EDA-Q.
@ekverstania Then acknowledges between the groups is again arbitrary, resulting from the bias of the observers. So demand avoidance features themselves would not be dividable.

Wider social interaction phenomean, a suitable name is needed, like Demand Avoidance Phenomena.
@ekverstania Again this all needs further reflecting and working out exact specifics.
@ekverstania Worth pointing out PDA literature states it has nothing specific to it.
@ekverstania So to clarify, the autistic features/ demand avoidance features, are features that located to the individual, that:
- mutually interact with a person's comorbids.
- Are affected by the person's environment and situation.
@ekverstania For something to be considered an "X" feature, it would need to be backed up by research. I am thinking that features would be grouped into traits. Traits have to universal among the population, but features do not.
@ekverstania This makes sense, most psychological based constructs exist within a spectrum. We know that how features in autism and PDA change depending on a person's circumstances.
@ekverstania An implication of this is that if a trait is comprised entirely of features that is not universal, it cannot be considered to be a trait of said population. Meaning that autistic/ demand avoidance traits are indivisible.
@ekverstania Again a person is either autistic or not. No autistic person is more "autistic" than another autistic person.

Again would be same for a person with demand avoidance features.
@ekverstania We know that there are no biomaker tests for "mental disorders", i.e. they are all social constructs. So this means that there is no direct tests for identifying autistic features, same for demand avoidance features.
@ekverstania So what is being diagnosed then?

Simple "autism" and Demand Avoidance Phenomena (PDA/ EDA/ RAD etc). So the broader phenomena that is autistic features/ demand avoidance features interacting with observers bias.
@ekverstania This again makes sense as a mental disorder diagnosis is subjective and is essentially the clinician's opinion.
@ekverstania What clincians try to do when identifying a mental disorder is to minimise the gap between their bias and the autism features/ demand avoidance features present in a person.
@ekverstania So you can do this, using: questionnaires, observation schedules, semi-structured interviews, school reports, many raters (caregivers/ teachers etc) completing questionnairies, getting to know the person.
@ekverstania So to be clear it is the broader phenomena that is shaped by social interaction and observer's bias that is being diagnosed, not the autistic features/ demand avoidance features themselves.
@ekverstania So it is important to use clear and precise language and not to conflate terminology.

Any divisions in a population, are arbitrary, done at the broader, diagnostic level.
@ekverstania There is important, that autistic features and demand avoidance features, are not inherently pathologised, this is done at autism/ PDA level, by the observers bias.
@ekverstania So for example autistic features, may not be as pronounced as seen in non-autistic persons, but it does not mean it is deficit.
@ekverstania As a feature is not static, can change of over time, the situation the person is in. This representation of autistic features produces the spiky skills profile known for in autism.
@ekverstania What this means, is that deficits are socially created, created at the broader level on when autistic feature/ demand avoidance features interact with the observers bias. While autistic features views autistic persons as fully human.
@ekverstania I am going to stop this thread here. I think it sets out enough points. I need to make more time to fully flesh it out.

@threadreaderapp unroll please.

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More from @Richard_Autism

11 Dec
@ekverstania @lynchauthor @NeuroClastic I think it needs more thought being put into to be honest, into exactly how it works. I think that "autistic features", i.e. what many would call ASD, is a smaller component of autism, which is how autistic features interact with each observer's bias.
@ekverstania @lynchauthor @NeuroClastic Autistic features, would need to be modelled with the situation a person is in.
@ekverstania @lynchauthor @NeuroClastic Thinking aloud, I suspect autistic features themselves cannot be subtyped, but the broader autism phenomena probably can be.

You can have subtypes/ subgroups, but it they routed in observers bias, instead of intrinsic differences between autistic persons.
Read 4 tweets
10 Dec
So the more I reflect on the assumption that PDA is ASD/ autism subtype/ subgroup/ profile; the more rediculous it seems to me.
I am reflecting on the agenda of O'Nions et al (2016), where they seek to find PDA DISCO questions that can identify what the authors think is, in the autistic population. This is while being mistaken about Newson's PDA research.
Newson was not trying to find PDA in autistic persons, she was trying to show PDA is significantly different to Kanner's autism & Asperger's Syndrome, and thus PDA is needed. Newson included in non-autistic persons in her sample.
Read 20 tweets
9 Dec
Finally got my hands on the Help4Psychology PDA article. Only skimmed over parts of it so far. Seeing they assumed PDA is linked to autism and base hypotheses on that. Still in my mental "pseudoscience" pile with much autism research, like most ABA research.
While it references some critical literature, it does not reference any my own, @milton_damian or @Allison66746425 scholarship. So much for engaging with critique.
Also Conflict of Interest seems not to be disclosed either in how Judy Eaton is a member of PDA Development and how she stands to gain from PDA being accepted as part of ASD & that her clinical practice is based on specialising in PDA.
Read 77 tweets
8 Dec
@ekverstania You can add this response to the list of parallel's to PDA.

I am all for experiencing the validity of lived experience & empathising with other's perspectives.
@ekverstania From a literature perspective, we cannot successfully divide autism. Differences between subtypes break down under scrutiny.

Generally, autistic persons do not want autism to be subdivided too.
@ekverstania So if something is seen differently in any "subgroup" it is often due to something causing the difference. If autism itself, does not cause a behaviour or core feature of then this construct by definition cannot be autism.
Read 9 tweets
24 Nov
@Gubb1e There are too many problems with that logic though.

First, PDA strategies are good practice.
Similar strategies are widely practiced inside & outside of autism, independently of PDA and have been for years.
@Gubb1e Most disorders are not that good at guiding prognoses or support packages.
There is no evidence of differential treatment between suggested autism subtypes.
SEND system is needs based, CYP should NOT need a PDA dx to get appropriate strategies.
@Gubb1e Arguments about rights to a PDA dx due to its strategies, are universal & therefore applicable to many persons, including many non-autistic persons.
Read 9 tweets
23 Nov
After much musing, this afternoon. I think a thread on partly why any credible or reputable autism expert should say PDA is NOT autism is probably warranted.
It centers on Newson’s work; it is simply can NOT be used to argue PDA is autism. She does not draw PDA overlapping autism. Saying PDA has a different cause of social communication issues to autism.
First point, Newson said this herself, that PDA is not autism and including not rebranded autism (particularly Aspergers). adc.bmj.com/content/archdi… Image
Read 50 tweets

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