Historical foundations of stuttering research: A brief bibliographic review

Stuttering is a distinct speech fluency disorder affecting people of all ages, from children to adults. Although recognized for centuries, the understanding of stuttering—including definitions, classifications, and the history of stuttering research in Eastern and Western contexts, as well as the influence of religion, mythology, and scriptures up to the 18th and 19th centuries. This bibliographic review seeks to highlight only few key developments and timelines in stuttering research. The review identified approximately 96 notable works, including books, chapters, and original research articles, from 511 sources collected through various online and offline databases. These contributions were systematically organized, coded, and analyzed according to themes, publication years, journal names, and publishers. The results were visualized using a harvest plot and followed PRISMA-2020 guidelines. The review concludes with a summary of insights and implications for future research directions.