Phát triển ngân hàng câu hỏi trắc nghiệm thích ứng đánh giá từ vựng tiếng Anh thông dụng: áp dụng IRT và phương pháp cân bằng đề

Tóm tắt

In the context of language education in Vietnam, while computerized adaptive testing can be seen as an inevitable development trend in the 4.0 era, only few studies have been published on this topic, including those on UEd-CAT 1.0 - an adaptive testing system of the University of Education - Vietnam National University, Hanoi. This study was conducted to build a standardized item bank to evaluate the Vietnamese EFL learners’ knowledge of English high-frequency vocabulary. After the steps of writing 552 items and getting the items evaluated by item writing experts, the authors carried out a try-out with the participation of 1619 university students, analyzed the quality, calibrated the items with the Rasch model, equated the test forms to set item parameters onto a single scale, edited and finalized the item bank of 522 standardized questions. This question bank is believed to meet the requirements of the UEd-CAT 1.0 system, contributing to the content development of the system and to the EFL teaching and learning practices in Vietnam.