KONTRIBUSI PENGUASAAN KOSAKATA TERHADAP KETERAMPILAN MENULIS TEKS DESKRIPSI SISWA KELAS VII UPT SMPN 2 TANJUNG BARU, KABUPATEN DANAH DATAR

Abstract

This research began with the low writing ability of students, especially in creating descriptive texts, which is influenced by limited vocabulary mastery. The purpose of this study was to describe the role of vocabulary mastery on the descriptive text writing ability of seventh grade students of UPT SMPN 2 Tanjung Baru. This study applied a quantitative method with a correlational design. Data were collected through objective tests to measure vocabulary mastery and performance tests to assess descriptive text writing ability, with a total sample of 61 students. The research findings showed that students' vocabulary mastery was in the more than adequate category, and their descriptive text writing ability was also in the more than adequate category. In addition, statistical analysis showed a significant positive relationship between vocabulary mastery and descriptive text writing ability, with a calculated t value (30.65) exceeding t table (1.67) at a 95% significance level. The coefficient of determination showed that vocabulary mastery contributed to students' writing ability. In other words, the better students' vocabulary mastery, the better their ability to write descriptive text.