Yes, I saw the paper and obviously it's not very conclusive. It says no link with dopamine, but I've seen papers that say there is too much dopamine in stutters and some say that there's not enough. So I'm really not sure what to believe anymore. I'm pretty sure also that that dopamine blockers have been getting most attention for potential treatments of stuttering. But from my experience, I actually became more fluent on Adderall (which increases dopamine). So hard to say. But would definitely be worth investigating further. Hopefully they do more robust studies.