Effectiveness of using mobile dictionary app to enhance vocabulary knowledge of EFL learners with different level of motivation

Vocabulary knowledge is crucial for learners of English as a Foreign Language (EFL), yet mastering it presents significant challenges. Understanding how to effectively enhance vocabulary acquisition is essential due to its fundamental role in language proficiency. While numerous studies have demonstrated the efficacy of mobile learning for enhancing both receptive vocabulary knowledge (RVK) and productive vocabulary knowledge (PVK), there is a lack of research investigating the relationship between vocabulary acquisition in receptive and productive and learner motivation within a mobile learning context. The current research aims to investigate the effect of using a mobile dictionary app on English vocabulary learning among undergraduates with varying levels of motivation. This study employed a quasi-experimental design with a pretest and posttest. One freshman class, consisting of 32 participants, was involved in the study. The Intrinsic/Extrinsic Motivation Scale of English Learning (I/EMSEL) and Core English Vocabulary (CEV) Test were used as instruments for data collection. Participants were divided into three groups based on their motivational levels: high, medium, and low. The learning effects of these groups were measured using pre-test and post-test assessments during a 12-week intervention. Data analysis was conducted using paired sample T-tests and one-way ANOVA. The results indicated that the mobile dictionary app effectively promotes vocabulary knowledge acquisition in both receptive vocabulary knowledge (RVK) and productive vocabulary knowledge (PVK) across different motivational levels. However, students with high motivation showed significantly greater improvements compared to those with medium and low motivation. These findings suggest that mobile learning tools are more effective for vocabulary acquisition in highly motivated students. Educators should focus on enhancing learner motivation to maximize the benefits of these tools. Future research should explore how motivation influences vocabulary learning and identify other factors that impact the effectiveness of mobile learning.

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