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Can an autistic have very advanced language skills (Verbal communication, not about tonal nor body language skill, nor the written verbal language, I keep dyslexia out of this discussion for sake of specificity) and a very Early age of first talk, while having other autism symptoms?

Notably there are a few blogs and many social media posts that writes about "hyperverbal autistics" but I did not find scientific literature about hyperverbal autistics.

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    $\begingroup$ Bounty note: There are confusions over autism and language acquisition. It is widely believed that autistics either cannot speak or have a delayed and/or poor language acquisition. But some (proponents of asperger subtype) says an early and/or advance language skill may happen in autism. By DSM merger of all autism subtypes into ASD it means a subset of Autistics (the former 'Aspergers') may possess advanced language skills. What is the current scientific view on this contradiction? $\endgroup$ – Always Confused Jan 13 at 16:07
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    $\begingroup$ Some clarifications: Is your question about language skills or verbal skills? It is certainly possible to have normal literacy skills while verbal skills are impaired for example. Also, what is missing in your answer below? It seems to cover the relationship of autism and asperger's quite well. $\endgroup$ – Arnon Weinberg Jan 13 at 18:21
  • $\begingroup$ @ArnonWeinberg Verbal communication I mean. In my answer what I miss is updatation. Asperger is an old term. Is there any scientific literature that discusses the "hyperverbal" things relates to autism/ autism spectrum? $\endgroup$ – Always Confused Jan 13 at 18:26
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They may be referring to hyperlexia (rather than hyperverbal ability):

Hyperlexic children are characterized by word-reading ability well above what would be expected given their age. ... Some experts believe that most children with hyperlexia, or perhaps even all of them, lie on the autism spectrum.

But as far as verbal ability goes, since autism is a spectrum disorder, there is bound to be a spectrum of verbal abilities in those afflicted. Wikipedia summarizes:

Language impairment is also common in children with autism, but it is not necessary for the diagnosis. ... It is also common for individuals with ASD to communicate strong interest in a specific topic, speaking in lesson-like monologues about their passion instead of enabling reciprocal communication with whomever they are speaking to.

In other words, "hyperverbal" autistics are hardly unusual. However, they often struggle with perspective-taking, and hence may speak out of turn, failing to assess their audience's level of interest.

For recent reviews of language acquisition and verbal abilities in individuals with ASD, see for example:

Eigsti et al (2011); "Language acquisition in autism spectrum disorders: A developmental review":

... early studies indicated that some 50% of affected individuals never acquire functional speech, though more recent estimates find a smaller proportion of non-verbal individuals, typically around 25%. Language acquisition in ASD is characterized by dramatic delays, with first words produced at age 38 months, on average, compared to 8–14 months in TD.

Volkers (2017); "Untangling the Language Challenges of Autism":

... on average, children on the spectrum produce their first word one to two years later than typically developing children. And we know that language ability among children on the spectrum varies greatly—some may be fluent conversationalists, while others can barely speak.

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  • $\begingroup$ You wrote, 'In other words, "hyperverbal" autistics are hardly unusual' what is meaning of Hardly unusual? is it "very usual" (double negative)? or it means "strongly unusual"? $\endgroup$ – Always Confused Jan 16 at 10:18
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    $\begingroup$ It means "not particularly unusual" or "somewhat usual". They are not the majority, but not rare either. $\endgroup$ – Arnon Weinberg Jan 16 at 19:25
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Yes, this may happen with Asperger subtype of autism.

AS had already been described in 1981 by Lorna Wing, who first proposed the term to refer to a special subgroup of children who, according to Asperger’s original description, were characterized by: social isolation and lack of reciprocity in social interactions; normal or precocious language acquisition, with above-average linguistic skills but subtle abnormalities of verbal and non-verbal communication (e.g., atypical syntax, pedantic vocabulary and absent or stereotyped prosody); a narrow focus of interests, often restricted to unpragmatic and highly original themes; overachievement in specific cognitive domains; and motor clumsiness (Wing, 1981).

--- A Concise History of Asperger Syndrome: The Short Reign of a Troublesome Diagnosis; by J. B. Barahona-Corrêa and Carlos N. Filipe (PMC)

Some authors claimed that Asperger subtype is characterised by no obvious language delay.

One approach to resolve this question has been to adopt the criterion of absence of clinically significant language or cognitive delay — essentially, the “absence of language delay.”

--- Can Asperger syndrome be distinguished from autism? An anatomic likelihood meta-analysis of MRI studies; by Kevin K. Yu, Charlton Cheung, Gráinne M. McAlonan (PMC)

I did not found research articles about very early talkers, but some internet article claims very early talkers sometimes experience social deficits but without explicite mention of ASD. such as https://www.huffpost.com/entry/9-truths-about-early-talk_b_8137426/amp

Update:

In Phonology and vocal behavior in toddlers with autism spectrum disorders (PMC full text) it has been said that

In terms of phonological development, articulation is often reported to be normal or even precocious in children with ASD who speak (Kjelgaard & Tager-Flusberg, 2001; Pierce & Bartolucci, 1977), although Rapin, Dunn, Allen, Stevens and Fein (2009) and Cleland, Gibbon, Peppé, O'Hare and Rutherford (2010) showed a range of patterns of speech and language behavior to be present in school-aged children with ASD.

(Although they discusses other anomalies in language development)

in Early language and communication development of infants later diagnosed with autism spectrum disorder it is said that

Overall, this prospective study confirms that delays in communication and language development are apparent early in life in children with ASD, and emphasizes that developmental surveillance should include monitoring for delays in gesture, which may be among the earliest signs of ASD.

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