Kim, Suyeon. 2017. “L2 Learners' Perception of STAD and its Relationship with Learning Styles”. The Sociolinguistic Journal of Korea 25(2), 73~102. This study aims to examine the relationship among cooperative learning, L2 learning, and learning styles. To that end, I utilized Slavin's Student Teams-Achievement Divisions (STAD) and investigated how learners perceive the effect of STAD on second language (L2) learning and how the effect of STAD is associated with their learning styles. I implemented STAD in two college English conversation classes during a semester, with 44 learners completing two questionnaires and six participating in interviews. Three key findings emerged: 1) L2 learners perceived STAD as being more useful than lecture-centered classes in improving their conversational skills, promoting more active participation and interaction, and developing higher self-confidence and lower anxiety, 2) while avoidant learning styles had a significant negative correlation with students' perception, a significant positive correlation resulted with the majority of learning styles, and 3) collaborative and independent learning styles had a more significant effect on L2 students' perception of STAD than other learning styles. The results show that through cooperative learning, L2 learners are scaffolded to improve conversational skills, and STAD accommodates diverse learning styles by giving learners equal opportunities for success. This study implies that L2 learning can be maximized when teachers employ a strategy that allows learners with different learning styles to participate.

This study compared aural and written modes of presentation for the two item types, to explore the effects of question/option presentation mode and item type on EFL learners’ listening comprehension performance and their perception. One hundred and fifteen Korean college students who were divided into three different proficiency groups participated in the study. The participants took a listening test which consisted of dialogue-completion and Q&A multiple-choice items in the aural and written modes, followed by a survey on their perceptions, and a stimulated recall interview. The results showed that the least proficient group was more critically affected by the mode than the other two groups. The least proficient group performed significantly better in the written mode than in the aural mode, while they received similar scores on the two item types. The major factors that caused the discrepancy among the groups were memory capacity in the aural mode and reading ability in the written mode. The implications and suggestions on listening test development are discussed.

This study investigated the influence of L1-specific constraints on L2 perception. In particular, we examined the effect of the unreleased coda constraint in L1 on Korean learners’ perception of word final palatal sibilants across two proficiency levels, i.e., low vs. high. Our findings from a perception experiment showed that Korean learners, especially the low group learners, tended to hear the illusory vowel /i/ after a word final palatal sibilant. Thus, the low group learners had a difficulty in discriminating the contrasts of /ʃ/ vs. /ʃi/, /ʧ/ vs. /ʧi/, and /ʤ/ vs. /ʤi/. According to the perception experiment, the low group learners’ illusory vowel perception rates increased as frication noise of the word final palatal sibilant got longer. Additionally, the low group learners were not influenced by the relative duration of the vowel /i/ in perceiving the vowel. Rather, their vowel responses were more likely to be influenced by the frication duration of a word final palatal sibilant. The study revealed that L1 constraints are significant factors influencing L2 perception.

Many researchers called for a need to expose L2 learners to diverse writing contexts, and L2-L2 interactions using English as a communication tool became more common than communication with native English speakers. The present study introduced two groups of Korean university students to a task, for which they were grouped differently: the first with a group of students at a Chinese university and the second with Chinese students as well as students of a different Korean university. These groups performed a task that they selected from among three choices. In the process of their e-mail exchanges, the students' pre- and post-task perspectives were explored through two surveys. In addition, the students expressed their reflections regarding this experience in writing. Overall, the students seemed to consider this experience of exchanging emails with L2 students speaking a different L1 useful and it helped some students gain confidence in their ability to use English as a communication tool. This study provided an opportunity to expand the writing context in EFL classrooms.