Every one of us stutters differently. I used to believe it was all psychological but I also have a physiological thing I do. Its called rhythmic tapping. When I'm not engaged in purposeful movement, I tap with my fingers. Its supposedly caused by a neurotransmitter anomaly. This indicates that there's more to it than anxiety, etc. Has anyone else experienced this behavior? I'll post a link https://www.google.com/gasearch?q=rhythmic%20tapping%20stutter&source=sh/x/gs/m2/5