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1. Observation
In this research, observation was used to validate the data from the questionnaire and the interview. The researcher used observation because this
technique can show the complete description of a target group Ary et al., 2010. By observing the students and the teacher, the researcher could see their real world
interaction. It helped the researcher verified the data from the questionnaire. It also acted as a complement for the interview.
The researcher observed the three classes that were subjected to the questionnaire. In each class, the researcher noted several things about the
interaction between the teacher and the students from the beginning to the end of the lesson in a span time of forty-five minutes. The researcher also listed the
misbehaviors that the students did based on the mentioned misbehavior categories.
2. Questionnaire
In this research, the researcher used interviewer initiated self-administered questionnaire to gather the data. An initiated self-administered questionnaire is
where the interviewer combines the advantages of interviewer administered and self-administered techniques de Leeuw and Hox, 2008. In this technique, the
interviewees answer the questionnaire individually while the interviewer assists as needed. This is to ensure the independence of the interviewee so that the data is not
biased. The reason that the researcher used this technique was because the
respondents of this questionnaire were Junior High School students. They might have a confusion in answering the questionnaire. Therefore, the presence of the
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researcher while the students answered the questionnaire was needed. The researcher started the session by giving some underlying rules for the students in
answering the questions. This was needed so that the students knew how to answer the questionnaire. The questionnaire itself was about how often they do
misbehavior in forms of twenty-six close-ended statements based on the mentioned misbehavior categories and two open-ended questions. After explaining, the
researcher let the students answered the questionnaire and assisted as needed.
3. Interview
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