Abstract
This study tried to investigate whether bioresonance therapy could have a beneficial effect in stuttering children of school age who showed no progress under other therapies. The 14 patients, age 9–18 years, were randomized in two groups. The first received 10 sessions of bioresonance, the second continued with speech therapy. In the second phase of the study the first group received speech therapy while the second was treated by bioresonance. The intensity of the stuttering was measured at the beginning, at mid-term and at the end of the 9 months experiment. Various established methods were used for that purpose. It was not possible to demonstrate any improvement of the stuttering during or after either of the two therapies. This study showed how difficult it is to investigate stuttering scientifically. It turned out that in reality there is a lack of precise differential diagnosis. This means that true stuttering can hardly be distinguished from other speech disturbances and is under the influence of countless external factors.