ریحانه مهاجر

The present study was an attempt to investigate the effects of textually enhanced dual subtitles (TEDS) on vocabulary learning and listening comprehension among Iranian intermediate-level English language learners. The research explored how different types of subtitles—TEDS, plain dual subtitles (PDS), and no subtitles—impact learners’ ability to learn vocabulary and influence their listening comprehension. To achieve this goal, 51 Iranian intermediate English as a foreign language (EFL) learners from a private Institute (i.e., Iran National Language Institute) were randomly assigned to three groups: The first experimental group, namely TEDS watched six episodes of the American sitcom Friends with TEDS; the second experimental group with PDS, and the control group without any subtitles. Before and after the treatment, all the participants took tests assessing their vocabulary knowledge and listening comprehension. The results revealed that, regarding vocabulary posttest, the participants exposed to TEDS performed significantly better than those who watched videos with PDS or no subtitles. However, the difference in listening comprehension scores between the TEDS group and the PDS group was not statistically significant. Additionally, the PDS group performed significantly better than the no-subtitles group in both vocabulary and listening comprehension tests. This research highlights the potential of TEDS in supporting vocabulary learning. The findings suggest that further exploration into different types of textual enhancement of various language elements and their effects on various language skills is necessary to improve instructional practices and enhance language learning tools.