The Effect of Vocabulary Mastery and Learning Motivation towards Description Writing Ability

The aim is to determine the effect of vocabulary mastery and motivation to improve descriptive writing skills. Writing must be applied in class according to the right formula and obtained through practice. The accuracy of this learning formulation requires motivation because it will be able to improve the quality of student learning more diligently when they have high motivation. Motivation can always determine the intensity of learning efforts and learning achievement for students. This research was conducted in class XI SMA Negeri in Purwakarta District, Purwakarta Administrative City, West Java Province, for the 2017/2018 academic year. In this area, there are 2 public high schools that will be used as sources of research data, namely SMA Negeri 2 Purwakarta and SMA Negeri 1 Purwakarta. The method used is a survey with a questionnaire on 60 randomly selected students. The results of this activity have a significant effect on the use of learning motivation on students' descriptive text writing skills as evidenced by the value of sig. 0.000 < 0.05. There is a significant influence between vocabulary mastery on students' descriptive text writing skills which is indicated by the value of sig. -0.010 < 0.05. And, there is a significant effect of using learning motivation and vocabulary mastery on students' descriptive text writing skills with a sig value. 0.000 < 0.05.