Lee, Kilryoung. 1998. Review of `An introspective analysis of an individual`s language learning experience` written by Kathleen M. Bailey. Linguistics, 6-1, 353-370. Quantitative methodology seems to be inappropriate for some of the language classroom research when the classroom is viewed as the place where personal, dynamic, and context-bound interactions are involved. Recently, qualitative methodology received recognition as a new and viable research methodology. Qualitative methodology is helpful for describing and explaining the complex and interacting factors involved in the personal and social sides of language learning and use in classroom. Bailey (1960) offers a good example of using a technique of qualitative methodology, keeping a diary, and also describing a language learner`s affective state. This review will introduce introspective characteristics of diary studies and we will learn that the methodology makes it possible to peek into a learner`s emotional state, which is assumed to have considerable influence on language learning. (Yeungnam University)