Investigating the Effectiveness of ChatGPT for Vocabulary Acquisition among University Students: A Pilot Study

Authors

  • Petra Polakova Department of Applied Linguistics, Faculty of Informatics and Management, University of Hradec Králové, Czech Republic
  • Petra Ivenz Department of Applied Linguistics, Faculty of Informatics and Management, University of Hradec Králové, Czech Republic

DOI:

https://doi.org/10.29333/iji.2026.19315a

Keywords:

vocabulary acquisition, ChatGPT, technology-enhanced learning, foreign language learning, educational technology

Abstract

This study examines the effectiveness of ChatGPT as a tool for improving English vocabulary acquisition among university students. Employing a mixed-methods approach, the research investigates both quantitative and qualitative data from pre-tests, post-tests, and questionnaires. A total of 31 university students participated, with data collected on their vocabulary proficiency before and after using ChatGPT. The results showed a significant improvement in students’ vocabulary scores. Additionally, students reported positive perceptions of ChatGPT’s ability to support their learning. The findings suggest that ChatGPT has the potential to enhance vocabulary acquisition and offer a valuable resource for language learners. The study highlights the growing role of AI technologies in language education and their ability to provide personalized, immediate support for students’ learning needs.

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Published

2026-07-01

How to Cite

Polakova, P., & Ivenz, P. (2026). Investigating the Effectiveness of ChatGPT for Vocabulary Acquisition among University Students: A Pilot Study. International Journal of Instruction, 19(3), 281–296. https://doi.org/10.29333/iji.2026.19315a

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Section

Articles