The objective of this study with first- and second-year undergraduate Thai English as a Foreign Language (EFL) students (N = 813) was to explore the relationships among English writing performance, writing self-efficacy, and writing anxiety. The students wrote an opinion-essay by hand and completed writing self-efficacy and anxiety questionnaires. Their texts were evaluated by EFL instructors using an analytic rubric. Pearson correlations indicated that there was a positive correlation between writing performance and self-efficacy and a negative correlation between writing performance and anxiety. There was also a negative correlation between self-efficacy and anxiety. Implications are recommended for further pedagogic research that take learners’ variables into an account when examining writing performance.

English writing, particularly essay writing, is one of the most challenging skills for English as a Foreign Language (EFL) learners. Producing cohesive and coherent texts has become increasingly important. This study focuses on the role of synonymy as a lexical cohesive device in the essay writing of EFL students, specifically examining how frequently Albanian university students use synonyms in their essays. Additionally, the study explores how synonymy contributes to creating a well-structured and cohesive essay. Fifty-six first-year students (male and female) from the Faculty of Foreign Languages, English Department, were purposefully selected to write 56 descriptive essays. A qualitative research design was employed, with writing tasks serving as the primary data collection instrument. The data was analysed using qualitative content analysis procedures. The findings showed that synonyms were used more frequently than near-synonyms in the students' essays. It was also found that the students used various synonyms and near-synonyms to achieve logical cohesion in their writing, despite having limited knowledge of synonymy as a lexical cohesive device. Furthermore, the students had difficulty selecting the appropriate synonyms due to their insufficient vocabulary.