Types of data Data and Source of Data

digilib.uinsby.ac.id digilib.uinsby.ac.id digilib.uinsby.ac.id digilib.uinsby.ac.id digilib.uinsby.ac.id digilib.uinsby.ac.id digilib.uinsby.ac.id 50 2. Interview Since the researcher needs the information from the student teachers’ perception regarding with the causing factor of their weakness point, interview is chosen as the data collection technique. Interview is discussions, usually one-on-one between an interviewer and an individual; it is used to gather information on a specific set of topics. 9 It is used to answer the second research question. In this case, unstructured interview is applied. After getting the analysis of the assessment instrument, there will be the strength and weakness, here the researcher is going to find the causing factor of the weakness in assessment instrument design. Every student teacher might have different weakness from their work, so the question of the interview will be formed from the weakness point of their assessment instrument.

F. Research Instrument

Research instrument is the device used by investigators for analyzing data. 10 Here the researcher attempted to measure the variable and the items of the research through rubrics and interview guidelines. 1. Rubrics Rubric which was used to analyze student teachers’ assessment instrument was adapted from PenilaianAutentik book by Kunandar and 9 GroupsMargaret, C. Harrell, Data Collection MethodsSemi-StructureInterviews and Focus National Research Defense Institute, 2009, 6. 10 Neil J Salking, Encyclopedia of Research Designhttp:srmo.sagepub.comviewencyc-of-research- designn189.xml, accessed on March 16 th , 2015 digilib.uinsby.ac.id digilib.uinsby.ac.id digilib.uinsby.ac.id digilib.uinsby.ac.id digilib.uinsby.ac.id digilib.uinsby.ac.id digilib.uinsby.ac.id 51 AssessmenPembelajaranBahasa book by Sri Wahyuni. To test the validity of the assessment instrument, the researcher analyzed it based on the criteria of the assessment instrument form the indicator in the rubric. Rubrics for analyzing the student teacher’s assessment instrument were designed differently. It was because every kinds of assessment had its own characteristics. The rubrics were designed using “Yes” and “No” checklist. If “Yes” column had been fulfilled, it means that the assessment instrument was able to fulfill the indicator and it will get one as the point. Then, If “No” column had been fulfilled, it means the assessment instrument was not able to fulfill the indicator and it will get zero as the point. 2. Interview Guidelines In this research, interview was intended to find the causing factor of the weakness point in their assessment instrument. It was done to generate the subject ideas related with their weakness point of their assessment instrument. After getting the analysis of the assessment instrument, there will be the strength and weakness, here the researcher attempted to find the causing factor of the weakness in assessment instrument design. Every student teacherhas different weakness from their work, so the question of the interview was formed from the weakness point of their assessment instrument. That is why, this interview used unstructured interview to gain the data. The question was in the type of conversational questions whereas