Development of a Computerized-Adaptive Test to Measure English Vocabulary Size with IRT
- Publisher:
- Universitas Muhammadiyah Surakarta
- Publication Type:
- Journal Article
- Citation:
- Indonesian Journal on Learning and Advanced Education (IJOLAE), 2023, 5, (3), pp. 277-294
- Issue Date:
- 2023-09-29
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To speak English fluently like a native speaker having a vocabulary of 20 000 words are required In many universities in Indonesia Vocabulary Size Test VST is still held with Paper Based Test PBT so it is less effective and efficient The aims of this study were 1 to develop Computerized Adaptive Testing CAT which helps get students with a standardized English vocabulary size and 2 to implement it in measuring vocabulary size The approach in this study is Research and Development R D with product development procedures following the steps of Borg and Gall The findings of this study are 1 the CAT program has Item Response Theory IRT parameters that can change according to the test takers answers and the test will stop if the estimated ability of the test takers is known Standard Error SE close to 0 01 and 2 with the application of the CAT program it can be seen that the total vocabulary of English Language and Teaching Department students is still 20 000 Based on these findings this study implies that for students vocabulary mastery to be on par with native speakers abilities the English Language and Teaching Department needs to evaluate the learning process and determine a particular program to increase student vocabulary
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