Donghyeon Yun, M.S., is a third-year Ph.D. student in the Department of Speech, Language and Hearing Sciences at Indiana University. His research, under the guidance of Drs. Jennifer Lentz and Yi Shen, focuses on psychoacoustics and hearing aids with hearing impaired listeners. Prior to doctoral study, he worked as an audiologist at Konkuk University Medical Center for a year. He has finished the Audiology master's and bachelor's degrees at Hallym University, Republic of Korea. He was a teaching assistant of the Department of Speech Pathology and Audiology at Hallym University. He now works as a research assistant in Applied Hearing Science Laboratory. His goals are to help clinical audiologists make use of a better method examining patients and fitting hearing aids.