B.A. in Linguistics, Department of Linguistics, Seoul National University. February 1988.
M.A. in TEFL, University of Texas, Austin. May 1991.
Ph.D in TEFL, University of Texas, Austin. May 1995.
Dissertation Title: Differences in the epistemological beliefs of Korean and American graduate students and their influence on an academic writing task written in Korean and English
Dissertation Advisor: Professor Diane Schallert
1996. 3. - 1997. 8. Full-time lecturer. Department of English Language and Literature, Hoseo University, Asan, Korea.
1997. 8 - 2001. 12. Assistant Professor. Department of English Language and Literature, Sookmyung Women's University, Seoul, Korea.
2001. 12 - 2004. 3. Assistant Professor. Department of English Language Education, Seoul National University, Seoul, Korea.
2004. 4 - 2010. 3. Associate Professor, Department of English Language Education, Seoul National University, Seoul, Korea.
2010. 4. - Present. Professor, Department of English Language Education, Seoul National University, Seoul, Korea.
2016 - 2021. Director of 'Thought and Expression (College Writing II)' at the Faculty of Liberal Education, Seoul National University.