Saptin Dwi Setyo Hastuti, Agus Widyantoro


This study aims to investigate the influence of (1) the students’ vocabulary mastery on their writing skill, (2) the students’ grammar mastery on their writing skill and(3) the students’ vocabulary and grammar mastery on their writing skill at Yogyakarta State University. This research was an ex-post facto. The population comprised the third semester students of Pendidikan Bahasa Inggris (PBI) study program at the Languages and Arts Faculty, Yogyakarta State University in the academic year 2013/2014. Therefore, this study showed that (1) vocabulary mastery positively influenced the students’ writing skill, (2) grammar mastery positively influenced the students’ writing skill, and (3) vocabulary and grammar mastery positively influenced the students’ writing skill.

Keywords: vocabulary mastery, grammar mastery, and writing skill.




Penelitian ini bertujuan untuk mengetahui pengaruh dari (1) penguasaan kosakata terhadap keterampilan menulis mahasiswa, (2) penguasaan grammar terhadap keterampilan menulis mahasiswa, dan (3) penguasaan kosakata dan grammar secara bersama-sama terhadap keterampilan menulis mahasiswa. Penelitian ini merupakan penelitian ex-post facto. Populasi dalam penelitian ini adalah seluruh mahasiswa semester tiga program studi Pendidikan Bahasa Inggris (PBI) di Fakultas Bahasa dan Seni, Universitas Negeri Yogyakarta pada tahun ajaran 2013/2014. Hasil dari penelitian ini menunjukkan bahwa (1) penguasaan kosakata berpengaruh secara positif terhadap keterampilan menulis mahasiswa (2) penguasaan grammar mahasiswa berpengaruh secara positif terhadap keterampilan menulis mahasiswa, dan (3) secara bersama penguasaan kosakata dan grammar mahasiswa berpengaruh secara positif terhadap keterampilan menulis mahasiswa.

Kata kunci: penguasaan kosakata, penguasaan grammar, dan keterampilan menulis.


vocabulary mastery; grammar mastery; and writing skill

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