THE EFFECT OF PERSONAL VOCABULARY NOTES (PVN) IN VOCABULARY MASTERY IN THE INTERMEDIATE CLASS STUDENTS’ WRITING SKILL AT ENGLISH CONVERSATION CLUB (ECC) IN ACADEMIC YEAR 2021/2022

ABSTRACT
This study aims to determine the increase in students' vocabulary using Personal Vocabulary Notes (PVN) in the intermediate English Conversation Club (ECC) class. This study used a pre-experimental design with one group pre-test and post-test. The population of this study are members of the ECC dormitory. The sample of this research is the intermediate class which consists of 14 students. This researcher uses the completion test as a research instrument. The design used in this research is a pre-experimental design. The sample used was 23 students and then classified into 2 classes, namely the experimental and control classes. The instrument used in this research is a test given at the beginning and end of the meeting after the Personal Vocabulary Notes (PVN) is applied. The data from the initial and final values were analyzed by t-test and Cohen's which resulted in the post-test value of the experimental group having a p-value of 0.006 at 5% significance or 0.05 which indicates a moderate effect size. This clearly proves that the application of personal vocabulary notes is effective on the vocabulary skills of intermediate class students at the English Conversation Club (ECC). In the academic year 2021/2022.
Keywords: Personal Vocabulary Notes, Vocabulary Mastery