EN
The article is an attempt to synthesize and organize the most up-to-date data on speech fluency disorders: stuttering and cluttering. The analyzed data come from both scientific research, based on the latest diagnostic techniques (for example: fMRI, PET, audiological research), as well as reflections gathered around the logopedic practice. The factors predisposing, triggering and maintaining the distinguished speech disorders, as well as the methods of determining the goals of therapy of persons with these disorders and ways of its management were taken into account. The conclusions resulting from the meta-analysis of the collected data show significant changes in the theoretical and practical perspective of the perception of stuttering and cluttering.