Abstract

Code-switching (CS) is a complex linguistic phenomenon in bilingual environments, such as English as a second language (ESL) and English as a foreign language (EFL). In recent years, CS has been viewed as a meaningful linguistic phenomenon in ESL and EFL contexts. This research investigates EFL teachers' and learners' perceptions of the use of CS in Saudi universities. Also, this research aims to investigate the relationship between learners' perceptions of CS and their L2 proficiency levels. A quantitative approach is utilised in this research to collect data from 40 Saudi EFL teachers and 50 Saudi undergraduate EFL learners to investigate their perceptions of CS used in their EFL classrooms. Further, the researcher uses two modified Likert-type questionnaires adopted from Alkhudair (2019) to elicit teachers' and learners' perceptions of CS used in their EFL classrooms. In addition, the Statistical Package for the Social Sciences (SPSS) was used to determine the frequencies, percentages, and mean scores. The learners took Oxford Online Placement Tests to investigate the role of L1 in EFL classrooms. Also, SPSS was used to calculate the Pearson Correlation Coefficient to investigate a correlation between learners' L2 proficiency levels and their perceptions of using L1 in EFL classrooms. As a result, both teachers and learners showed positive attitudes towards CS in EFL classrooms. Moreover, upon investigating the relationship between learners' English language proficiency level and their perceptions of L1 use, the results suggest positive and negative correlations.

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