Thread by @Richard_Autism

@SusieBass Being honest, I do not where to begin. The issues with much of PDA narrative is systemic.

As I twitted earlier today are many good reasons for not even viewing PDA as a form of autism. Much/ most of critique of PDA seems valid.

@SusieBass I mean if literature does not justify viewing PDA as an ASD in 2011. The scientific and ethical response, is not to pursue an agenda that tries to create evidence base to view PDA as an ASD. Just so much of it is bonkers.

@SusieBass Another example. So PDA is an ASD supporters often compare growth in PDA, vs historic growth of autism, commenting on comparable milestones. To me comparing Autism's history to PDA is a silly thing to do if you want PDA to be an ASD.

@SusieBass To it just reinforces the case for PDA to not be autism. Autism use to be a form schizophrenia, and is now it's distinct disorder. Likewise, autism use to rare and is fairly common.

@SusieBass PDA use to be a "Pervasive Developmental Coding Disorder" (Newson 1989; 1996), then some suggested it is an ASD/ rebranded autism/ female autism. Some view PDA to be a rare ASD subgroup. Some think PDA is a common new type of disorder.

@SusieBass Obviously, some people like @utafrith think autism should narrow, like how ASD was originally portrayed. Nowadays people just accept those with Asperger's are autistic as the core features of it are indistinguishable with "Autistic Disorder"/ "Kanner's autism

@SusieBass @utafrith We also accept that often clinician's bias, prevents those not conforming to autism stereotypes, from receiving an autism diagnosis. For instance, autism in females is just as valid as autism in males, despite the male bias in prevalence rates.

@SusieBass @utafrith PDA is still PDA at lower diagnostic threshold's despite what some "PDA is an ASD" supporters would contest. If the fundamental features are present, using the same core processes; it is still PDA.

@SusieBass @utafrith How autism took a "spectrum" nature, with broader clinical accounts, "lower" support needs & vastly higher prevalence rates; can easily happen to PDA. Comparing autism's history to PDA, is a good way to demonstrate this & undermines PDA is an ASD narrative

@SusieBass @utafrith @threadreaderapp please could you unroll?

Thank you in advance.