Research Objectives Research Benefits

a Definition of Perception Based on Bootzin, Loftus, Zajonc, and Braun 1983, perception means the interpretation process which comes from some stimuli of their sense organs. For this reason, perception and sensation cannot be separated in the perceptual process. Basic sensations are always needed in order to have a meaningful interpretation. The stimuli which help the perceptual process usually come from the previous experiences. People will reflect the stimuli which they got from the past and gain some information about that. They will try to compare the previous and the newest information on their own. Further, Rock said that perception is an active process as cited in Altman, Valenzi Hodgetts, 1985, p. 105. The perceptual process needs an active brain to create the perception. One of the examples is filling some incomplete sensory information. This action simply called as subjective contours. Subjective contours are some helping lines or shapes that appear to be a part of a figure but those are actually not physically present. However, building a perception is not easy as it seems. During the perceptual process, the brain is expected to organize the stimuli to create a good meaning. Along with Bootzin et al., Altman, Valenzi and Hodgetts 1985 also has the same ground for perception. He states that the stimuli will be selected and grouped to have a meaningful interpretation. Perception is the way of someone sees reality. As soon as somebody gets stimuli, their selected sense organ will interpret and give meaning to something. Figure 2.1 The Perceptual Process From the figure above, it can be concluded that perception has a role in building someone‟s behavior. Experiences also affect someone in building his or her perception. b Perceptions’ Factors Altman et al. on their book Organizational Behavior: Theory and Practice 1985, p. 86, define several factors which influence perception. They mention four things. Those are selection of stimuli, organization of stimuli, the situation, and the self-concept. The first factor is the selection of stimuli. When we are surrounded by bundle of stimuli, we can only focus for a small number. This process is called a selection. Selection is also a reason on why people have their own thoughts and perceive things differently. The second factor is the organization of stimuli. After selecting the experiences, those experiences need to be arranged. This arrangement is needed so Stimuli Sensors selection of stimuli Perception, organization, and interpretation of stimuli Behavioral respons that the information will become meaningful. Having a good order of the sensory data will also be good for our mind. The third factor influencing someone‟s perception is the situation. Situation means a person‟s familiarity with expectations or about something. Situation also connected with his or her past experience. The last factor inf luencing someone‟s perception is the self-concept. The way people feel and perceive about ourselves is known as self-concept. Self-concept will affect the way of seeing the world. 2. Vocabulary There are four sections discussed in this part. They are the meaning and level of vocabulary, the vocabulary teaching, the techniques of teaching vocabulary, and the background and principle of vocabulary teaching.

a. The Meaning and Level of Vocabulary

According to Kreidler 1963, p. 21, vocabulary is a stock of words in a language that can facilitate and support the learner in order to reach the language skills. This statement is supported by Burton 1982 who says that students should be supplied with enough vocabulary in order to make them able to learn the four language skills which are listening, speaking, reading, and writing. Fries 1952, pp. 55-56 divides the meaning of English words into two kinds. The first is lexical meaning which refers to the words found in the dictionary. The second is structural