Research on attitude and stuttering
Here is a great article on a survey that states "People who stutter report greater success with speech treatment that focuses on attitudes than on speech modification." Perhaps those who stutter and have gone through speech therapy with no results should focus on finding a therapist who specializes in treating stuttering as they will use all of the tools needed to help the stutterer, including changes in attitude. Read the article here http://www.asha.org/about/publications/leader-online/archives/2003/q2/030513e.htm