questionnaires and other methods which include a warranty cards; b distributor audits; c pantry audits; d consumer panels; e using mechanical devices; f
through projective techniques; g depth interviews, and h content analysis. Content analysis consists of analyzing the contents of documentary materials and
all verbal materials which can be either spoken or printed. Thus, in collecting the data from the series, the researcher conducted several steps as follows.
First, the researcher watched the series. Second, the researcher downloaded the transcripts. Third, the researcher re-watched the series and
checked the accuracy of the transcripts. At the same time, the researcher marked all the utterances which indicated the performance of speech act of
command in the series. Last, the researcher classified the collected data into a data sheet.
E. Data Analysis Techniques
In analyzing the data, qualitative method uses inductive approach. According to Vanderstoep and Johnston 2009:168, inductive approach is a
process of reasoning where observation came first, then followed by theory, hypothesis and interpretation.
After data collection, the researcher did four procedures in data analysis. First, the data were classified based on the three objectives of the
research. Second, data trustworthiness was checked by consulting to the linguistics students and lecturers. Third, the researcher analyzed, described,
and interpreted the data. Fourth, the researcher deriveed the conclusions based on the results of the research.
F. Data Trustworthiness
The researcher employed triangulation technique to create data trustworthiness. According to Vanderstoep and Johnston 2009:179,
triangulation is a method of using more than one methodology to address the same question in order to create or develop the validity and reliability of the
research data. There are four types of triangulation. They are data triangulation, investigator triangulation, methods triangulation, and theory
triangulation. In order to gain reliability of the data, this research employed an
investigator triangulation. By using investigator triangulation, the researcher used more than one investigator to investigate the data. The researcher
discussed and consulted the data with his supervisors. Furthermore, the researcher also asked other linguistics students to triangulate the data.
Moreover, theory triangulation was also achieved by using multiple theories in the process of data analysis and data interpretation. Searle’s theories on
speech act and politeness theories from Brown and Levinson were used as the main theories to identify, analyze, and interpret the data.
