Yeo, Kyunghee. 1998. Information Processing of the Cognitive Skill and the Second Language Learning. Studies in Modern Grammatical Theories 12. 241-256. The purpose of this paper is to explain the second language learning from the perspective of the cognitive psychology, which views the second language learning as an information processing. According to the perspective of the information processing, the mastery of complex cognitive tasks, such as learning the second language, requires relatively large amounts of processing capacity and time and another that occurs quickly and takes little processing energy. These two types of operations are referred as "controlled" and "automatic" processing, respectively. Repeated performance of the components of the task through controlled processing leads to the availability of automatized routine, resulting in learning. But there is more involved in learning a complex cognitive skill than automatizing subskills. The learner must also impose organization and structure the information that has been acquired. As more learning occurs, internalized, cognitive representations change and are restructured. This restructuring process involved operations that are different from, but complementary to, those involved in gaining automaticity. Although both processes occur throughout the learning, gains in automaticity are thought to be more characteristic of early stages of learning and restructuring of later stages.