Analysis of Research Trends in Korean Pronunciation Education Using Topic Modeling: Focusing on Research in Korea

This study is an analysis of research trends on Korean pronunciation education studies from 1986 to October 2021. To this end, a total of 943 studies were collected, classified before and after, and text data were converted as of 2011. And this data was analyzed by extracting major topics using topic modeling techniques. As a result of the analysis, before 2011, most of the studies on pronunciation errors and textbook development targeting English, Japanese and Chinese learners were conducted. However, after that, the research was focused on the learners of Asia, and it was subdivided into studies on plosives, liquids, and short vowels. Accordingly, as a future task of pronunciation education research, it is necessary to expand research on pronunciation education for each learning stage as well as research on learners for each language region. Also, educational research on fricatives, affricates, and nasals, which have been relatively under-researched, and educational research on phonological rule phenomena should be conducted more actively.