 Qualitative research is a type of research that focuses on understanding people's experiences, beliefs, and attitudes through observation, interviews, and other forms of direct communication. It is often used to gain insight into complex topics that may not be easily understood by quantitative research. Qualitative research is particularly useful in exploring new areas of study, providing explanations for why certain things happen and developing theories about how to solve problems. This article was authored by Ji Hi Pyo, Won Lee, Loon Young Choi, and others.