<![CDATA[The role of vocabulary in facilitating reading and listening comprehension in a foreign language is widely acknowledged. Despite its importance, many university students in Vietnam still struggle to expand their vocabulary effectively. With the rapid development of digital technologies and artificial intelligence (AI), new opportunities for vocabulary learning have emerged. However, despite the growing use of digital tools, many studies examine them separately rather than exploring their combined use to maximize the benefits for vocabulary learning. This study aims to explore English-majored students’ perceptions of the usefulness of ChatGPT-supported Quizlet (free version) for vocabulary learning in a university listening course in Vietnam. A mixed-methods approach was employed, using a 5-point Likert-scale questionnaire focusing on perceived usefulness and semi-structured interviews. Data were collected from 60 participants after 14 weeks of implementing the tools. The quantitative results indicate that students generally perceive the implementation of ChatGPT-supported Quizlet as useful for improving vocabulary learning, particularly in meaning retention, pronunciation, parts of speech, and contextual use. The qualitative findings further reveal that these tools help learners better understand words, identify parts of speech, and increase their exposure to vocabulary through accurate, instant, context-specific, and personalized examples from ChatGPT, a variety of interactive practice features from Quizlet, and by fostering learner autonomy. The findings highlight the importance of integrating AI-assisted tools into vocabulary instruction in Vietnamese EFL higher education contexts, with appropriate training in prompt writing and Quizlet use. Future research may further investigate the long-term effects of AI-assisted vocabulary learning on learners’ vocabulary retention.]]>
