According to estimates by the Stuttering Foundation, there are over 70 million stuttering people around the world (about 1% of the total population). In the United States alone, there are 3 million people with this fluency of speech impairment. Living with stuttering was an experience shared by many famous figures functioning in the public space. Scientists from the University of Silesia are conducting pioneer research in the field of Speech Therapy for Individuals with Stuttering Disorders, referred to, mostly in Polish research, as Balbutologopedics, a sub-discipline of Speech Therapy, which deals with the diagnosis and therapy of speech fluency disorders, including, among others, stuttering and cluttering. Their research interests also include the influence of speech disorders on the quality of speech therapy, on the environment of stuttering people, and on the social perception of stuttering. With regard to the latter aspect, it is also very important to change social attitudes towards this phenomenon.