The effects of using Quizlet on vocabulary enhancement of tertiary level ESP learners

This study aims to investigate the effects of Quizlet online application on vocabulary development of tertiary level ESP students. The study also attempts to explore the perceptions of students about integrating Quizlet application into the learning and practicing of target vocabulary in ESP classes. In this research, a quasi-experimental research design was applied to determine the effectiveness of using Quizlet application and perceptions of students. In this regard, 40 Turkish ESP students who were studying in the department of Pilotage at a foundation university in Konya, Turkey were recruited as participants. They were then randomly allocated as control and experimental groups each having 20 participants. The control group participants received traditional instruction of vocabulary learning while the experimental group used Quizlet for vocabulary instruction. Three data gathering instruments were utilized; first pre- and post-tests were applied to reveal any possible differences between using Quizlet application over the traditional vocabulary instructions before and after the intervention. Second, a survey and semi-structured interview were conducted to the experimental group students to explore the students' thoughts and perceptions on using Quizlet application. The obtained data revealed that utilizing Quizlet for targeted vocabulary learning had a significant influence on the experimental group students' vocabulary enhancement when compared to those in the control group. The survey and face-to face semi-structured interview results showed that the experimental group students had positive perceptions toward Quizlet in their vocabulary learning process. Moreover, it was observed that Quizlet contributed to students' study performance as well as their autonomy in vocabulary learning.