A STUDY ON SECOND- SEMESTER STUDENTS’ VOCABULARY SIZE AT ENGLISHSTUDY PROGRAM

Abstract

This study examines the receptive vocabulary size of 74 second-semester students in the English Study Program at Universitas Riau using the 140-item Vocabulary Size Test (Nation & Beglar, 2007). Administered online, the test yielded a high reliability (KR-20 = 0.94). Scores ranged from 24 to 129 correct responses (≈2,400–12,900 word families), with a mean of 73 items (≈7,300 word families; SD = 30.93), placing the average student in the “Large” category. Distribution showed 20.3% in “Very Large” (10,001–14,000), 35.1% in “Large” (7,001–10,000), 12.2% in “Medium” (5,001–7,000), and 32.4% in “Small” (2,001–5,000). While most students possess adequate vocabulary for general and academic comprehension, nearly one-third fall below minimal thresholds for 95% text coverage. The study recommends differentiated instruction through regular vocabulary quizzes, extensive academic reading, and peer-collaborative activities. Future research should track learners longitudinally and explore influences on vocabulary growth, such as reading habits, motivation, and teaching strategies.