SUMANEE PINWEHA (CHULALONGKORN UNIVERSITY LANGUAGE INSTITUTE)

THE VOCABULARY SIZE AND THE USE OF AI BY THAI GRADUATE STUDENTS : LANGUAGE ASSESSMENT AND EVALUATION

Vocabulary knowledge is salient in academic success, especially for non-native English speakers at the graduate level. Understanding vocabulary size is essential for effective communication and comprehension in English-medium instruction. Several benefits of AI for language classrooms and its contribution to vocabulary learning have been reported. This study investigates the academic impact of vocabulary sizes on Thai graduate students from a public university in Thailand across science and non-science majors. It also explores the students’ opinions regarding vocabulary levels on academic performance and their use of AI in language learning. This study involved 210 Thai graduate students and was split evenly between science and non-science majors who completed the Updated Vocabulary Levels Test (UVLT). Additionally, 30 students participated in semi-structured interviews to discuss their vocabulary use and AI tool engagement. The results revealed significant variations in vocabulary size between science and non-science majors, with correlations to academic performance. It also provided insights into the effective use of AI tools in vocabulary learning. These findings, with their practical implications, may contribute to curriculum development and instructional strategies, enhancing English language education for graduate students. This presentation will discuss crucial aspects of developing targeted vocabulary instruction that addresses students' specific needs and AI's supportive roles in improving academic and professional outcomes.

Sumanee Pinweha is a lecturer at Chulalongkorn University Language Institute. She has provided language training for more than 25 years. Her research interests include AI tools for language learning, pronunciation and vocabulary instruction, pronunciation teaching for young learners, differentiated instruction, computer-mediated communication, and project-based learning.