I listed the resources if you are interested. You can also go to Google scholar and type "stuttering neurosis". You will find plenty. By the way, even if you say that the cause is genetic, it's an opinion, professionals have just found a correlation between different brain activity, they didn't say it was the cause or the effect. This sub automatically assumes it's the cause, I think it's both. Now, the thing is, this sub is about sharing insights and advice on this problem, I'm giving some resources because I really believe in this, so dont come with this attitude of being superior.