4.2 Methodological issues
4.2.4 Methodology intended for case study research
4.2.4.3 The interviews of the case study
Gorman and Clayton (2005) said that the interview case study uses data collected
from the individual interviews linking the research and the subjects in general.
Additionally, Denscombe (1998) pointed out that the interview does not need to
collect much technical information but the basic technical skills are required for
research interview, the researcher can use a tape recorder to record the conversation
and save it, and then listen to it to write their research report. Without doubt,
conversational skills are very significant between researchers and interviewees. The
researcher has to describe very clearly the questions to let the interviewee answer
them, leading to more accurate responses.
In addition to this, the conversation is not a general and relaxed interview; it is a
part of the research process to express the social phenomena and present the
respondent’s knowledge and produce findings that can contribute to both the
academic and practice areas. Therefore, the interview must be very careful and
serious. It is of considerable importance when choosing to use interview surveys
that the researcher thinks of his or her research purpose, especially when they want
to know more details and gain in-depth answers to analyse from the interviewee.
Gorman and Clayton (2005) referred to the benefits of an interview survey in
qualitative research; the interviewees can be encouraged to answer open-ended
questions face-to-face and it also can let the interviewees better understand the
research topic and context. The interview can also produce very in-depth and
directly sympathetic research questions and can prove a very direct method of
Fontana and Frey (edited by Denzin and Lincoln, 2005) declared that an interview
includes broad selection methods and a variety of types; the methods include
individual, face-to-face vocal transactions, but the interviewing involves face-to-
face group exchanges and telephone surveys. Denscombe (1998,p.112-115) stated
the different interview types: structured interviews, semi-structured interviews or
unstructured interviews, one-to-one interviews, group interviews, and focus groups,
as outlined below:
1. Structured interviews: the researcher asks the same questions to the limited
response group. In other words, the respondents are given the same questions; there
is very little flexibility about which questions are asked or answered in the
structured interview (Fontana and Frey edited by Denzin and Lincoln, 2005).
Denscombe (1998, p.112) pointed out that structured interviews provide the
collection of quantitative data. The reason for this is that the researcher prearranges
the questions and answers which allow more control over the wording and the same
questions are asked of every interviewee, making it easier to analyse the data. The
structured interviews are used with a broad number of respondents to collect the
data.
2. Semi-structured interviews: the semi-structured interviews are open-ended
more widely. But the researcher using the same structured interview processes, has
to prepare a clear list of questions to be answered.
3. Unstructured interviews: unstructured interviews are more encouraging to allow
the interviewees to extend their thoughts. The main difference from the semi-
structured interviews is they do not really need a list of questions in advance and
allow more in-depth investigation to explore the interviewee’s experiences and
feelings. The same aim of semi-structured and unstructured interviews is to
“discover” their interviewees’ thoughts rather than “check” them (Denscombe, 1998,
p.113).
4. One-to-one interviews: the ordinary way to conduct semi-structured or
unstructured interviews is one-to-one. It is easy to arrange a meeting for the
researcher and interviewee. The benefit is to catch very direct thoughts during the
interview. In addition, one to one interviews can get more detailed ideas from a few
people.
5. Group interviews: some researchers need more numbers to collect their data. The
numbers research, such as group interviewing, engages four to six people to do the
survey. Nevertheless, it is difficult to gather the people to argue about one topic and
may influence the other people in the group interview and one cannot get the
original voices from the other people.
6. Focus groups: Denscombe (1998, p.115) said that focus groups interviews have
become more popular. The focus groups contain between six and nine people. They
are brought together with the researcher acting as a mediator to discover the manner,
comprehension and judgment in relation to the research topic. The main point is that
they only focus on one subject to discuss. It is more the contribution of the
interviewees.
Ultimately, from the above interview types’ investigation, the research that focuses
on the interview case study has a more flexible process but this still have to be
planned. Gorman and Clayton (2005) suggest that the researcher has to get ready a
list of questions before the interview but that extra questions are allowed during the
interview to reply to the research subjects. When the questions go forward to the
interviewing process, if some answers are not very clear, it is necessary to go back
to the earlier interviewees to ask the questions. It is very significant to draw out
more information for the research subjects to expand the research topic.
Nevertheless, the interviewing case study is a structured process to allow the
researcher to ask about their research questions to support what cannot be observed.
face interviews and can also discover other related resources for the research
subjects. When the questions are more formal, then the responses will be more
correct and effective. The interview case study is based on the two conversations,
and the researcher’s role is to encourage the interviewee to speak out more about
their experience and events. Thus, the interview case study can produce high-quality
research to develop the research findings.