Identification of problem INTRODUCTION

mastery toward reading comprehension. This study used some test to collect the data, that is vocabulary test and reading comprehension test. The vocabulary test deals with the contents word verb, noun, adjective and adverb. Reading comprehension test concerns with determining idea, finding specific information, finding reference, finding inference and understanding vocabulary.

1.8 Definition of Terms

In order to know of term in this study and definitions of conceptual word presented in order to have similar perception. 1. Vocabulary is reffer to parts of speech in English including nouns, verbs, adverbs, and adjectives. 2. Reading comprehension is the ability to read text, process it and understand its meaning. An individuals ability to comprehend text is influenced by their traits and skills, one of which is the ability to make inferences. 3. Micro skill is specific part of reading, the use of this are recognizing a core of words, and interpreting order patterns and their significance information, recognize grammatical word classes nouns, verbs, etc., finding inference, and reference. 4. Correlation is a statistical measure that indicates the extent to which two or more variables fluctuate together. A positive correlation indicates the extent to which those variables increase or decrease in parallel; a negative correlation indicates the extent to which one variable increases as the other decreases.

II. LITERATURE REVIEW

This chapter discusses about the review of previous research, and also the review of related literatures used in this study, such as concept of reading comprehension, concept of vocabulary mastery and concept of vocabulary test.

2.1 Review of Previous Researches

In general, there are several studies about the correlation between vocabulary mastery and reading comprehension previously done by other researcher. The results of their research are reviewed as follows: The study was done by Liu and Nation 1985: 77. About the success of guessing meanings of a text and the results of this study shows that the participants who have high reading proficiency level can successfully guess 85 to 100 of the unknown words, In addition, Hirsch 2003: 96 found that knowing at least 90 percents of the words of a text enables the reader to get the main idea from the reading and guess correctly what many of the unfamiliar words mean, which will help them learn new words. Qian 2002: 34 further investigated the relationship between vocabulary knowledge academic reading performances with 217 students attending an intensive ESL program at the University of Toronto. The finding