Gloss-mediated vocational vocabulary learning among Iranian ESP learners

This quasi-experimental study intended to consider the role of using CALL-based and gloss-mediated vocational vocabulary learning and its impact on vocabulary knowledge. The study used five different majors. For each major, there were two classes, so the researcher conveniently selected one class as the control group and the second class as the experimental group. Thus, five classes as the control groups (each field of study one class) and five classes as the experimental groups (each field of study one class). The total number of participants was 210, that 106 learners were in the control groups and 104 were in the experimental groups. The overall findings revealed that the treatment groups outperformed the control groups. Therefore, using computer-based glossing information leads to better performance in vocabulary knowledge and vocabulary retention.