Yes. I've been doing a lot of research into the neuroscience of stuttering, reading a lot of articles, and our brains are different than non-stutterers. We think of stuttering as *the disorder* because it has such an obvious effect on our lives, but stuttered speech is only a single end result of a system issue within the brain. PWS also show deficits in maintaining steady rhythms and kinesthetic sense (especially with the mouth). I mean, I sometimes stutter writing 3's and capital E's. That's kinda odd. To your point about social anxiety: About 4% of the general population qualify for a diagnosis of social anxiety. However, about 40% of stutterers qualify for social anxiety. Obviously, stutterers are going to report higher anxiety than non-stutterers around speech-oriented situations, but we/they also report high anxiety in non-speaking situations like "How comfortable do you feel eating in public?" [Source](https://www.sciencedirect.com/science/article/abs/pii/S0094730X14000308) (You can't read the article because it's behind a paywall, but I wanted to show that I can source my claims.) I'm writing a book at the moment that will go into a lot more detail about the neuroscience of stuttering. There's been some absolutely incredible research into stuttering in the past 15 years, but practically none of the discoveries have made their way into the community. (I hope to help fix that problem.) Hopefully in about a year or so I'll publish the book and I'll be able to give you a more coherent and comprehensive response. :)