No idea who the guy is that you shared, but I had some spare time, so here we go. I'll start off by saying that stuttering research needs a major overhaul if these are the people that are meant to have our best interests in mind. For instance, his claim that stuttering is associated with low intelligence has no evidence to back it up. Moving on - He begins by saying: “Stuttering is best considered as biopsychosocial.” Almost everything in medicine is considered biopsychosocial. "almost anything the listener does could act as a trigger for stuttering." - What? Citation please "Biological and psychological aspects are unique to the individual" - How does that explain the multiple biological similarities in people who stutter? - Blood flow impairments to brocas area? hyperdopamine? Genetics? "it could be as simple as a memory of stuttering." - Citation? "Suppose you have stuttered on a word previously, and in a neutral situation (nothing to do with the listener or environment!) you anticipate that a need to speak the same word is imminent. That in itself could be a trigger." - I hope he's not saying that triggers are causative of stuttering. - What happens when those exact trigger words don't become triggers anymore? "triggers" are unreliable. Triggers say nothing of the underlying causes of stuttering. "The major research update is that there is by now a very strong indication that there is a difference between conscious and unconscious cognitive processing." - The conscious and unconscious idea has been around for a long time, this is not new. "The mutations identified in stuttering are likely related to genes important for learning of speech and language." - No current evidence of this. - If this was true, then as you mention, why can people who stutter speak fluently by themselves? - I look forward to new research coming out on genetics of stuttering. "About 30% of stuttering does not appear to be genetically based and so must have some other cause." - Where did he get this 30% number from? Did he just make this up? "Consistent with anecdotal findings from therapy for those with neurological stuttering." - Define neurological stuttering from non-neurological stuttering? - We can’t separate stuttering from what’s going on in the brain, no matter the origins. “Stuttering and low intelligence:” "Stuttering has a fairly high overlap (30% or so) with diagnoses that can be classified as learning disabilities." - There is a distinction between intelligence and learning difficulties. "It demonstrates that stuttering and learning disability are not the same thing." - No shit "statements such as “stuttering is not a sign of low intelligence” are unhelpful (and untrue)." - There’s no evidence that people who stutter have low intelligence. - So again, citation? "Understand that stuttering happens whenever the speaker is unsure that their utterance is appropriate for the listener or the situation." - No evidence "When a response such as stuttering becomes conditioned (i.e. learned), it can be extremely difficult to unlearn." - No evidence that stuttering is the result of conditioning