%A 1213042084 YOLANDA RIZKI PUTRI %T CORRELATION STUDY OF STUDENTS? MOTIVATION AND STUDENTS? VOCABULARY MASTERY TOWARD READING COMPREHENSION AT SMPN 31 BANDAR LAMPUNG %X The purpose of this study was to find out whether there is a significant correlation between students? motivation and vocabulary mastery toward their reading comprehension or not. It was a quantitative research that applied ex post facto designs. The researcher employed 28 students of SMPN 31 Bandar Lampung as the sample. The instrument of this research was in the form of motivation questionnaire, vocabulary test and reading comprehension test. The collected data were analyzed by using Pearson Product Moment Correlation in SPSS 17.0. The result showed that r of students? motivation and reading comprehension, and students? vocabulary mastery and students? reading comprehension were .862 and .844 respectively. Therefore, it can be concluded that there is a positive correlation between students? motivation and vocabulary mastery toward their reading comprehension. The higher the students? motivation and vocabulary mastery are, the higher the students? reading comprehension achievement is. Keywords: reading comprehension, motivation, vocabulary mastery %C FAKULTAS KEGURUAN DAN ILMU PENDIDIKAN %D 2016 %I UNIVERSITAS LAMPUNG %L eprints22644