PENGGUNAAN BAHASA PERTAMA DALAM TUTURAN GURU DAN DAMPAKNYA TERHADAP PERFORMA BERBICARA BAHASA INGGRIS SEBAGAI BAHASA ASING MAHASISWA: SEBUAH STUDI DI UNIVERSITAS MUSLIM BUTON = HE USE OF FIRST LANGUAGE IN TEACHER TALK AND ITS IMPACT ON ENGLISH AS A FOREIGN LANGUAGE (EFL) STUDENTS’ SPEAKING PERFORMANCE: A STUDY AT UNIVERSITAS MUSLIM BUTON

The use of the first language (L1) in the context of the second or foreign language (L2) classroom has been a topic of ongoing debate among researchers engaged in the field of L2 teaching. The objectives of this study are to find out the use of L1 in the overall learning segment and to explore the perceptions of English as a Foreign Language (EFL) students regarding the use of L1 (Bahasa Indonesia) by their teacher during the learning process. Also, this study seeks to reveal the impact of the teacher's use of L1, as perceived by the students, during the learning process. A qualitative research approach was employed in this study, which involved seven English education department students enrolled in an Speaking subject at Universitas Muslim Buton in Southeast Sulawesi. The data were obtained through classroom recordings and interviews with students. The results showed that the use of L1 in teacher talk was found in each segment of the learning activity: pre-activity, during activity, and post-activity, where all categories of teacher talk occurred. Regarding the students' perception, the results of the analysis of student interviews indicated that some students have positive perceptions while others have negative perceptions. One potential factor influencing this discrepancy in student perceptions is their prior experience learning the target language. Additionally, the use of L1 by teacher has indirect impact on students’ speaking performance through cognitive and linguistic factors.