I obtained a PhD in Linguistics from University of Pennsylvania, and am currently working as an Assistant Professor at Chosun University in Korea. In my university, I direct the Child Language Lab, one of the few research labs in Korea dedicated to the study of infants' acquisition of language and cognitive development. 

My Ph.D.
thesis was on Korean prosody, which was written to quench the curiosity of my young linguistic self who wanted to know more about the sound system of her native language. After I did my Ph. D., I had the opportunity to expand my research to child language acquisition at the Department of Cognitive and Linguistic Sciences of Brown University. Before coming to my current institution, I worked at University at Buffalo, SUNY and Seoul National  University.

The speech sound system of human language continues to be the home base of my research. Much of my research draws on the quantitative analyses of empirical data obtained from corpora of spontaneous speech or elicited in a highly controlled lab setting. I also use eye-tracking to read baby's minds in processing language.

My most recent research topics include the following:

1. Developmental changes and dynamics in mother-child speech: How, why, and when do mothers change their speech characteristics over the course of child language development?

2. Acoustic characteristics of child-directed speech: Is there evidence that mothers systematically enhance certain aspects of their speech characteristics directly relevant to language learning?

3. Prosodic bootstrapping in infant language processing: Infants use stress/accent cues and phrase-boundary cues for segmentation of speech stream. What are the relative contributions of these cues in infants’ speech segmentation learning different languages? 

4. Tempo-dependent mapping of phonological features on the acoustic level: How do speakers implement durational cues under varying speaking rates and how do listeners map them to the right phonological category? These questions are being investigated with focus on the vowel duration conditioned by consonantal voicing.