Thank you for your reply. Are you referring to my Mega collection post: [https://www.reddit.com/r/Stutter/comments/15dltbl/megacollection\_tips\_to\_improve\_stuttering\_from](https://www.reddit.com/r/Stutter/comments/15dltbl/megacollection_tips_to_improve_stuttering_from) ? These are summaries of research studies. Could you elaborate on your wisdom? IYO, what causes the increase in the defensive mechanism that prevents the execution of speech motor plans or motor programs?