U sing I nt e rvie w s in a
Re se a rc h Proje c t
Autho r
N i ck Fo x
This resource pack is one of a series produced by the Trent RDSU. This series has
been funded by the Trent RDSU.
This resource pack may be freely photocopied and distributed for the benefit of
researchers. However it is the copyright of the Trent RDSU and the authors and as
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Reference as:
Fox, N: Using Interviews in a Research Project
Trent RDSU 2006
Dr Nick Fox
School of Health and Related Research, University of Sheffield
Last updated: 2006
TRENT RDSU
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© Copyright of t he T rent RDSU (2 00 6 )
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T a ble of Cont e nt s
Page
1.
Introduction…………………………………………………………….
4
2.
Types of Interview........................................................................
5
3.
Interview Methods…....................................................................
7
4.
Locating and Selecting Respondents – Who and How
11
Many?……………………………………………………………………
5.
Getting Agreement to Undertake Interviews……………………..
14
6.
Structuring the Interview…………………………………………….
15
7.
Preparing for the Interview………………………………………….
20
8.
Methods of Recording Interviews………………………………….
22
9.
Conducting an Individual Interview………………………………..
24
10.
Conducting a Focus Group Interview……………………………..
27
11.
Sources of Error and Bias in Interviewing……………………….
29
12.
Handling and Analysing Interview Data…………………………..
32
13.
Summary………………………………………………………………..
34
14.
Answers to
Exercises….……………………………………………..
35
15.
References………………………………………………………..……
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16.
Further Reading……………………………………………………….
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1. Introduction
The interview is an important data gathering technique involving verbal
communication between the researcher and the participant. Interviews are
commonly used in survey designs and in exploratory and descriptive studies. There
is a range of approaches to interviewing, from completely unstructured in which the
participant is allowed to talk freely about whatever they wish, to highly structured in
which the participant responses are limited to answering direct questions.
The quality of the data collected in an interview will depend on both the interview
design and on the skill of the interviewer. For example, a poorly designed interview
may include leading questions or questions that are not understood by the
participant. A poor interviewer may consciously or unconsciously influence the
responses that the participant makes. In either circumstance, the research findings
will be influenced detrimentally.
It is often assumed that if one is clinically trained and used to dealing with patients,
that this is sufficient training to carry out interviews with patients and others for
research purposes. Although there are some areas of overlap in terms of the basic
communication skills required, it should be acknowledged that for research some
different skills are required. The context is also important, since in a clinical setting,
there is a particular relationship between a patient and a clinician. It is possible that
in this routine setting the patient would not be prepared to answer all the questions
in a completely honest manner. So it may well be worthwhile thinking about the
interview from the respondent’s point of view and considering carefully who would
be the most appropriate person to conduct the interview and in what setting. There
may be a conflict of roles, for example, therapeutic versus research; or even an
unconscious adoption of roles that could affect the quality of the data collected.
LEARNING OBJECTIVES
Having successfully completed the work in this pack, you will be able to:
• Describe the features of, and differences between structured, semi-structured
or unstructured interview.
• Summarise the advantages and disadvantages of face-to-face and telephone
interviews, and of individual and group interviews.
• Prepare for, and conduct an interview
1.1 Working Through this Pack
The study time involved in this pack is approximately 10 hours. In addition to the written
text, the pack includes exercises for completion. I suggest that as you work through the
pack, you establish for yourself a ‘reflective log’, linking the work in the pack to your own
research interests and needs, and documenting your reflections on the ethnographic
method. Include your responses to the exercises plus your own thoughts as you read
and consider the material. You will find answers to the exercises at the end of the pack.
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2. Types of Interview
The interview design and question phrasing will influence the depth and freedom
with which a participant can respond. Some interviews encourage lengthy and
detailed replies while others are designed to elicit short and specific responses.
The degree of structure imposed on an interview will actually vary along a
continuum but it is useful to think of three main types: structured, semi-structured
and unstructured.
2.1 Structured or Standardised Interviews
Structured interviews enable the interviewer to ask each respondent the same questions
in the same way. A tightly structured schedule of questions is used and often the
intention is to use a quantitative method of data analysis. In many structured
interviews, not only will the questions be set in advance, but the possible choice of
answers also. Pre-coded responses are important to allow for comparison across all
respondents. It is usual for all responses to be noted or written down on the
questionnaire. By minimising the number of open-ended responses, the amount of
time required for coding and content analysis is greatly reduced and often the data can
be directly entered onto a computer for analysis.
In carrying out a structured interview, it is important that the interviewer adheres
closely to the interview instructions, namely:
• only interview those participants who fit the sampling criteria
• follow the correct order and filtering throughout the questionnaire
• keep personal opinions to oneself
• read out pre-codes and prompts where instructed
• do not read out pre-codes for questions requiring spontaneous answers
• write down open-ended responses in full.
Using a structured interview is a way of trying to ensure comparability across the
sample. However it is important that respondents are trained to administer
questionnaires and that they are well-briefed on the interview topic.
The questions in a structured interview may be phrased in such a way that a limited
range of responses is elicited. For example:
"Do you think that health services in this area are excellent, good, average or poor?
This is an example of a closed question where the possible answers are defined in
advance so that the respondent is limited to one of the pre-coded responses.
It is not unusual for otherwise structured interviews to contain a few open-ended
questions. ‘Catch-all’ final questions are common, for example, ‘Do you have
anything more to add?’ These questions are useful in helping capture as much
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information as possible but they increase the amount of time required for analysing
the interview findings.
2.2 Semi-structured Interviews
Semi-structured interviews are similar to structured interviews in that the topics or
questions to be asked are planned in advance, but instead of using closed
questions, semi-structured interviews are based on open-ended questions.
Semi-structured interviews are useful when collecting attitudinal information on a
large scale, or when it is not possible to draw up a list of possible pre-codes
because little is known about the subject area. However semi-structured interviews
are much more time-consuming than structured interviews, because of the
requirement to draw up coding frames and carry out content analysis on a large
number of interviews. Responses can either be tape-recorded or written down by
the interviewer.
Obviously because of the use of open-ended questions it is difficult to establish
uniformity across respondents. It is therefore all the more important then, that the
interviewer refrains from influencing the respondent in any way and maintains a
neutral manner.
With semi-structured interviewing, the open-ended nature of the question defines
the topic under investigation, but also provides opportunities for the interviewer and
interviewee to discuss some topics in more detail. If the interviewee has difficulty
answering a question or provides only a brief response, the interviewer can use
cues or prompts to encourage the interviewee to consider the question further. In a
semi-structured interview, the interviewer also has the freedom to probe the
interviewee to elaborate on the original response or to follow a line of inquiry
introduced by the interviewee. An example would be:
Interviewer: I'd like to hear your thoughts on whether changes in government
policy have changed the work of the doctor in general practice. Has your
work changed at all?
Interviewee: Absolutely! The workload has increased for a start.
Interviewer: In what way has it increased?
However, analysing the interview data from open questions is more problematic than
when closed questions are used as work must be done before often diverse
responses from participants can be compared.
Well planned and conducted semi-structured interviews are the result of rigorous
preparation. The development of the interview schedule, conducting the interview
and analysing the interview data all require careful consideration and preparation.
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2.3 Unstructured or In-depth Interviews
Unstructured or in-depth interviews (also sometimes referred to as qualitative
interviews) are so called because they have very little structure at all. The
interviewer approaches the interview with the aim of discussing a limited number of
topics, sometimes as few as one or two, and frames successive questions according
to the interviewee's previous response. Although only one or two topics are
discussed, they are covered in great detail.
The method of analysis also differs with in-depth interviewing, because no effort is
made to collate and quantify participants’ responses. Rather, the intention is to gain
a ‘rich picture’ of what is happening in a setting by talking at length and in detail to
participants involved.
When we talk about the application of in-depth interviews, we might be exploring
how patients in a hospital out-patient clinic experienced the consultations that they
had with a doctor. The objective of the researcher would be to glean as much
information as possible from the patients who are interviewed, in order to gain the
fullest understanding possible of what it was actually like for the patients to be in
that situation.
Generally, a researcher will try to understand the informants’ worldview in an
unstructured interview. The relationship between the interviewer and the informant
is important. Some characteristics of depth interviewing are that the researcher has
a general objective and may use an interview guide, but the respondent provides
most of the structure of the interview. The researcher uses this guide, but follows up
on ‘cues’ or leads provided by the informant.
Typically an interview of this kind will last from 30 to 60 minutes in length, and there
may be a series of interviews with a single participant, so you can see that it is an
intensive approach to gathering data. In depth interviews:
•
enable extended data collection from participants;
•
enable researchers to probe aspects of what a participant says, in ways that a
more structured approach such as an interview may not, in order to get a fuller
picture of an experience;
•
can explore the experiences of different participants, who may be selected to
reflect a range of experiences. For example, young and old, educated and less
educated people may have different expectations of treatment in a hospital;
•
allow people to ‘speak for themselves’ and thus increase the validity of the data.
The disadvantages of in depth interviews are that they:
•
are costly in time, both for participants and researcher, and therefore may have
to be limited in number undertaken during a study;
•
may be inefficient, as participants may not restrict themselves to the area in
which the researcher is interested;
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•
may not be generalisable, and are not amenable to statistical analysis to test
hypotheses;
•
may be subject to biases (invalidity and unreliability), both because participants
may not tell the truth or may hide aspects of their experiences, and because the
interviewer may have an unintended influence on what participants say.
Taylor and Bogdan (1984) summarise the circumstances under which in-depth
interviews are appropriate as follows:
•
When there is a clear and well-defined research interest
•
Participant observation in a setting is not possible
•
There are constraints on time for the research
•
The research depends on data from a wide range of people or settings
•
The focus is on subjective human experience
3. Interview Methods
The first thing that you will need to consider is whether you wish to conduct
individual or group interviews (also known as focus groups).
3.1 Individual Interviews
Individual interviews are valuable to provide detailed information about the meaning
of an event, situation or social context to each participant in a setting. They will be
appropriate where we may expect a variety of different stories to be told concerning
a setting or context, and where we are interested to learn about this variety. They
are also appropriate where the topic to be discussed is sensitive, where a
respondent may be unwilling to speak about some aspect of their experience in front
of others, or where there is a possibility that the story told could contaminate other
participants’ stories, and so you need to ensure interviews are conducted in private.
If interview data is to be subjected to statistical analysis, it is necessary to conduct
individual interviews, to ensure independence of respondents.
3.2 Group Interviews
Group interviews (sometimes known as ‘focus groups’) are only really appropriate
for qualitative approaches, and can be used where there is some benefit in getting a
‘group story’ about a setting or incident (Morgan 1998). The kinds of circumstances
where this may be of value include:
•
To generate a research question by tapping into the shared wisdom of
participants
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•
Where the researcher does not have sufficient knowledge to conduct
appropriately detailed individual interviews, and wishes to encourage
conversation between participants to provide relevant information about the
setting.
•
Where there may be a range of views, and the extent to which participants agree
or disagree about something is of interest to the researcher.
•
To assess the theoretical proposition of the researcher, based on previous data
collection and analysis
•
To come to a consensus between participants about the ‘best way’ to do
something (the ‘Delphi’ technique).
Individual and group interviews may be used in conjunction. Sometimes individual
interviews may inform a subsequent focus group, or vice versa.
Having decided on individual or group approaches, you now need to decide which
method of interviewing you wish to use. The three ways to conduct interviews are:
3.3 Face-to-face
Here the researcher and respondent meet together. This is the most frequently
used technique, and enables attention to be paid to non-verbal behaviour and
establish a rapport over an extended period of time.
Face-to-face or personal interviews are very labour intensive, but can be the best
way of collecting high quality data. Face-to-face interviews are preferable when the
subject matter is very sensitive, if the questions are very complex or if the interview
is likely to be lengthy. Interviewing skills are dealt with in more detail later in this
pack.
Compared to other methods of data collection, face-to-face interviewing offers a
greater degree of flexibility. A skilled interviewer can explain the purpose of the
interview and encourage potential respondents to co-operate; they can also clarify
questions, correct misunderstandings, offer prompts, probe responses and follow up
on new ideas in a way that is just not possible with other methods.
3.4 Telephone and Video Links
This can be used where a face-to-face interview is not possible, and may be
appropriate where the topic is not sensitive and non-verbal behaviour is less
important. Telephone conferencing may enable focus groups, but there are major
problems in ‘turn taking’ and ensuring all are able to participate. Video conferencing
adds a further dimension to this kind of distance interviewing.
Telephone interviews can be a very effective and economical way of collecting data
where the sample to be contacted are all accessible via the telephone. They are not
an appropriate method of data collection for a very deprived population where
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telephone ownership is likely to be low or where respondents may be ex-directory.
However telephone interviewing can be ideally suited to busy professional
respondents, such as general practitioners, when the telephone numbers can be
easily identified and timed appointments set up. Telephone interviews are also
particularly useful when the respondents to be interviewed are widely geographically
distributed.
One of the main disadvantages of a telephone interview is that it is difficult to
incorporate visual aids and prompts and the respondents cannot read cards or
scales. The length of a telephone interview is also limited, although this will vary
with participant area and motivation. Nevertheless it is possible to make prior
appointments for a telephone interview and send stimulus material for the
respondent to look at in advance of the interview. A prior appointment and covering
letter may enhance the response rate and length of interview.
3.5 Web Interviews
The Internet provides opportunities through chat rooms for interviewing, and is a
growing method of conducting in-depth interviews. There are clearly major
problems in establishing rapport, and non-verbal behaviour will be missed entirely.
However, some research suggests that respondents may be willing to be more open
about personal matters in this kind of format. Issues of authenticity of identity may
also be an issue. Methods of using the web include e-mail interviews, bulletin
boards and interactive web sites. Chat rooms can be used to simulate focus groups.
Exercise 1
Types and Methods of Interview
Which is the more appropriate interview approach (structured etc; face-to-face
etc) in each of the following studies?
1. A study of experiences of extra-marital sexual relations among middle-aged men
and women.
2. A study of how social workers, doctors and psychologists counsel people who
are having marital problems
3. A study of the factors involved in caring for old people in a remote country in
southern Asia that the researcher has not visited.
4. A study of old people’s experiences of community nursing and care services
(district nurse, ‘meals on wheels’, home helps etc)
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4. Locating and Selecting Respondents:
Who, How Many?
The different approaches to interviewing have different requirements for selection of
respondents. In structured interviews, often there will be a need for a detailed
sampling frame to determine how a representative sample is generated, and who
can be interviewed (for example, patients with a condition, women under 40 etc.). In
qualitative interviewing, on the other hand, neither the number nor the type of
respondents can be entirely specified in advance, as there needs to be a willingness
to change course as the data is collected. When we are working with something as
complex as the experiences of life and their meanings for participants, research
needs to permit a capacity to react to what is being found. The details of who is to
be interviewed, how respondents are to be found and what will be asked in the
interviews may all emerge during the study (Seidman 1998: 29).
That, however, does not mean that there is no need to plan ahead, and there are
some theoretical as well as some practical issues concerning selection of
respondents that need to be considered.
There are a number of ways of approaching the question of how and how many
people to interview.
1. Interview as many as possible
There is a temptation to conduct as many interviews as one can within a setting,
maybe even interviewing everyone involved (for example, all the staff of a care unit
or all the surgeons in a hospital).
There is a logic to this, based on being comprehensive, but it may be very wasteful
in time. It is feasible that after interviewing three people in a setting, all the
subsequent data generated is repetition: the same points come out time and time
again.
This approach feels rather quantitative in character: the aim is to ensure that
everyone has been surveyed to get a total picture. It will be appropriate when using
a structured interview schedule that may be analysed statistically
2. Choose a small, but representative sample
Like the previous approach, the intention here is to make sure that the analysis of
data will reflect the broad view of participants in a setting. A sampling strategy
would be to select participants to represent different categories, for example,
doctors, nurses and technical staff.
The problem is of course that such a selection strategy is very crude. Unlike
quantitative data collection, where randomised samples can be used and statistics
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applied to test ‘significance’ with a smaller sample and a non-statistical analysis it is
not really possible to be ‘representative’ in sampling.
3. Choose respondents to maximise diversity
The intention here is to get as wide a range of perspectives as possible, even if
these are extreme and do not represent the ‘average’ view. However, it enables the
data to count much more than if analysis is based on a broadly representative
sample
This kind of approach is known as theoretical sampling and is very different from a
quantitative sampling strategy. The number of people interviewed is relatively
unimportant, and more important is that each interviewee can add something to
the researcher’s understanding of the setting. The objective is to uncover the
widest range of meanings held by the participants in the setting. When you do not
uncover new meanings in an interview, this means you have interviewed enough
participants! (Taylor and Bogdan 1984: 83). This is known as theoretical
saturation. It does require that data analysis is partly concurrent with data
collection, so that it is clear when no new meanings are emerging from the in-depth
interviews.
This approach has been widely adopted in qualitative in-depth interviewing, and
provides an economical way to sample. It is well suited to descriptive and
exploratory research, and to some kinds of evaluation research. It is less suitable
for multi-setting, large-scale studies using more than one interviewer.
Exercise 2
Sampling Interview Respondents
What approach to sampling would you adopt in the following research studies?
1. Interviews to determine patient satisfaction with a GP consultation
2. A comparison of satisfaction between two GP practices
3. Interviews to discover what factors affect whether patients are satisfied with a GP
consultation
4.2 How to Recruit Respondents
There are various ways to recruit, ranging from the formal to the informal. If you
require a random sample, you could select potential interviewees from the electoral
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register or telephone directory. Recruiting in qualitative research tends to use
networks, either existing ones known to the researcher, or ones known to key
informants in the setting. Especially where theoretical sampling approaches are to
be used, there will also need to be an element of snowballing, whereby
respondents are encouraged to supply names of further potential interviewees to the
researcher.
Snowballing can be very effective as a technique to manage qualitative interviews,
as the supply of respondents can be regulated, simply be asking for contacts at the
end of interviews.
This avoids having to cancel pre-arranged interviews when
theoretical saturation occurs.
The following methods can be used for recruitment.
1. Approach a senior member of an organisation
This can be used to generate potential interviewees, and has the advantage that it
may provide a good supply of respondents. However, it may lead to bias if the
selection by a manager is based on her/his judgment of who is appropriate. The
other concerns mentioned in chapter 1 also apply to the use of a formal approach
such as this.
If you wish to interview senior management, it will be essential that you make a
formal approach to the organisation, and there may be problems gaining access to
these respondents, as there may be concern that confidentiality will be breached
leading to commercial disadvantage to the organisation.
2. Use informal networks
If you know people in an organisation, this can be a way in. Here the snowballing
methods may be valuable. It has the advantage that you can avoid any need for
sponsorship from a senior member of an organisation. It has the disadvantage that
it may not enable you to get to the entire range of perspectives. If you want to
research an informal group, this approach will be the most appropriate.
3. Direct approaches
On occasions, you may need to approach people in public places. This is not a
good method for in-depth interviewing given the length of time required for
interviews and the need for quiet. Cold-call telephoning is similarly unlikely to be
successful for this kind of research design. These approaches are more suited to
closed question designs.
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4. Advertising
Taking an advertisement in a local newspaper or a magazine read by your target
group may be productive, but response rates are poor for the expense involved and
the respondents will inevitably be highly self-selected. This could lead to bias,
especially where a research topic is controversial.
5. World-wide web
Discussion forums exist on most topics and joining a group and asking for
volunteers to be interviewed may yield some respondents. You will probably need
to participate in the group for some time before you will be trusted, especially as you
will be expecting people to meet you face-to-face for the interview.
5. Getting Agreement to Undertake
Interviews
It is important that the interviewer seeks the informed consent of the respondent to
participate in the study. In most cases, this should be obtained in writing. The
interviewer has an important role in explaining why the study is necessary and
converting waivers without coercion. Whilst it is possible to recruit respondents on
the doorstep, it is preferable to invite them to participate in advance either in writing
or by telephone. A written invitation on letter headed paper explaining the purpose
of the study can enhance the credibility of the study and increase response rates.
Nevertheless such an invitation should be careful to explain that participation is
entirely voluntary.
The interviewer must reassure the respondent of their confidentiality or
anonymity, and inform them that their identities will not be revealed in the
aggregated findings.
It is important that the interviewer introduces her/himself, explains why the study is being
done, why the respondent has been selected and what will happen to the interview data.
Respondents should be encouraged to ask questions. All of this will help the
interviewer to establish a rapport with the respondent.
Note that in some circumstance you will need to get permission to interview certain
people. This will be the case where they belong to an official organisation such as the
police or army, where you want to interview them because they represent a professional
group or an organisation such as an NHS trust, or when you want to interview them on
the premises of an organisation such as a hospital or GP surgery. Note too that all
interviews with patients, NHS staff and interviews conducted on NHS premises require
prior ethical permission.
It is also the case that some people although not official gatekeepers (e.g.
management, ethics committees) still perform an informal gate-keeping role. They are
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important to get ‘on side’ as they can make it much harder to get to respondents without
their assistance.
Exercise 3
Gaining Agreement for Interview
1. What is the disadvantage of interviewing people you know or work with?
2. Why might you need to approach an informal gatekeeper when conducting
interview research?
3. Why should we be cautious if a person is eager to be interviewed?
6. Structuring the Interview
To conduct a good interview, interviewers need certain skills, including reflective
questioning, summarising and controlling the interview process. Also, interviewers
need to be unbiased, systematic and thorough, and offer no personal views. He or
she also needs to be well informed on the purpose of the research interview and to
be well prepared and familiar with the questionnaire or topic guide. In addition, he
or she needs to be a good listener.
In addition to these generic skills, all interviews (even unstructured ones!) need
some degree of structure. This will vary from what is basically a closed question
questionnaire through to an interview guide in an unstructured interview.
6.1 Structured and Semi-structured Interviews
When carrying out a structured interview, it is important that the interviewer adheres
closely to the interview instructions, namely:
•
following the correct order and filtering throughout the questionnaire. Filtering
enables the interviewer or the respondent to know which question to go to next.
For example, a structured interview may include a filter such as:
If yes to Q1, go to Q3
If no to Q1, go to Q2.
• reading out pre-codes and prompts where instructed. A prompt is a prepared
answer such read out to the respondent by the interviewer.
• probing when necessary. A probe is a follow-up question that is used after the
respondent has given their first answer. It is used to elicit a more detailed
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response. Sometimes probes are general and non-directed. In contrast some
probes are very specific, for example, clarifying time of day.
• not reading out pre-codes for questions requiring spontaneous answers
• writing down or taping open-ended responses in full.
Using a structured interview is a way of trying to ensure consistency between
interviews. However it is still important that interviewers are trained to administer
the questionnaires and well briefed on the interview topic, ensuring familiarity with
some of the terms and jargon that may be contained in answers. Interviewers
carrying out structured or semi-structured interviews for a quantitative study should:
• stick closely to any written instructions about filtering questions, what to read out
etc.
• refrain from giving personal opinions (for any type of design)
• be systematic and consistent in the way they interact with each respondent
(again, for any type of design)
6.2 Structure in a Qualitative Interview
Qualitative interviews should not be based on a rigid list of questions that must be
answered in the time available. If this is the case, it is not an in-depth interview
(Jones 1985: 46). However, there is no such thing as a totally un-structured
interview (or at least, if there is, then it is not really adequate for research). Even
the informal interviews during participant observation are structured by the
researcher’s desire to clarify some aspect of a setting.
In preparing an interview, a researcher needs to have some broad questions in
mind. But the process of in-depth interviewing is about being able to make choices
‘on the hoof’ as an interview progresses, to ensure that data is gathered in relation
to the research topic, but without guiding the respondent into an area to such an
extent that it precludes their being able to say what is most important for them.
The key here is to permit sufficient flexibility in structure, so that it is possible to
respond quickly to what is important for the interviewee, asking questions in relation
to what we hear from the respondent, not from what is written on our briefing sheet
(ibid: 47).
The Three-Phase Qualitative Interview
According to Seidman (1998) we can discern three phases to a typical in-depth
interview:
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1. Focused Life History
In this phase, the interviewer’s task is to put respondents’ experiences in context,
by asking them to provide as much information as possible about themselves, in
relation to the topic of the study (ibid: 11).
Seidman offers an example of a study of the experiences of trainee teachers, in
which this first phase of interviewing encouraged them to contextualised their
experiences in relation to their life history, in particular their own schooldays and
any coaching or tutoring they did before becoming trainees. He asked the question
‘how did you become a trainee teacher?’ rather than ‘why?’, to gain as much
background as possible.
2. The Details of Experience
Here the emphasis is on the concrete details of the present experience of
respondents in the research topic area, to re-construct their experiences. In
Seidman’s example of research on trainee teachers he asked them what they
actually did, not about their opinions about the work.
Respondents may be asked about relationships with colleagues and students. One
technique might be to ask them to re-construct an entire day in their work lives
from getting up to going to bed.
3. Reflection on the Meaning
In the third phase, respondents are asked to reflect on the meaning of their
experience. This is not about how satisfying the experience may be, but how the
respondents make intellectual and emotional connections with the experiences that
are the subject of the research topic. The intention here is to find out how
respondents make sense of the experiences that they have, and how it relates to
other aspects of their lives and their selves.
This interview phase will draw on the first and second phases. Knowing something
about the life history and also about the daily experiences, enables the interviewer
to ask detailed in-depth, relevant questions concerning the meaning of events for
each individual respondent.
It is clear from this that the critical third phase can only succeed if preceded by
detailed earlier phases. Seidman (1998) actually suggests that there should be
three separate interviews, each lasting up to 90 minutes. If time is more limited,
then a single extended interview covering the three phases may be adequate.
Seidman’s case for separate interviews is alluring, as it ensures that a structure is
sustained, making sure that phases one and two are adequately dealt with before
moving to the final crucial phase.
I would add that this kind of approach can enable a rough analysis of phases one
and two to be undertaken before the third interview, to ensure that the interviewer is
fully briefed on critical issues and has been able to prepare adequately to ask the
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kind of in-depth questions required in phase three. If interviews are spaced from
three to seven days apart, this also enables respondents to reflect on what they
said, giving a potential for a more reflective third interview (Seidman 1998: 15).
The three-phase interview schedule is a good start towards this. It enables an
interview to move from a relatively unstructured early phase, where the researcher
is led by the respondent as the latter recounts their life history and their daily
experiences, to a more focused latter phase, in which the researcher attempts to
integrate the earlier materials to get at the critical meanings that the experiences
have for the respondents.
6.3 Interview Guides in Qualitative Interviewing
In-depth interviews are not based on a formal schedule, as are more structured
interview approaches. But it is important to have some kind of interview guide that
can enable an interviewer to ensure that they cover important areas. Interviewing,
especially as a novice, can be stressful, and a simple aide-memoire will assist an
interviewer to recall any important areas that have not been covered during the
interview.
The first step in preparing the guide will be to write down the research question.
You need to make sure that your interview is always focused on the research
question. You need to avoid getting side-tracked, although at the same time, you
can be open to ideas that you did not expect to emerge during interviews.
Using the three stages outlined in the previous section is the basis for the guide.
You can draft a series of cues that are intended to facilitate interviewees to talk
about the subject, moving from background through to specific reflections.
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Focused Life History
Use descriptive questions such as:
Tell me about what it was like back in (date or place) when you were …
I think that you had some background in .., didn’t you? Can you tell me about
that?
What got you interested in … ?
These kinds of questions should elicit the kinds of materials that will enable you to
move on to
Details of the Experience
The second phase of the interview will need to get a full record of the experiences of
the interviewee. The simplest way to do this is to use questions like:
Tell me about a typical day in your life/your office/your work
Can you start with what usually begins your day?
So what happens after that, on a typical day?
The responses can be probed to get maximum detail from the respondent. You may
also ask:
So is there ever anything different that happens?
What might happen if x occurs at work?
These kinds of questions should provide you with data on the ‘facts’ of the setting.
You need to note down the key issues that emerge, so these can be used in the
third phase
Reflecting on the Experience
This is where you attempt to elicit the meanings of the experiences for respondents.
By now, hopefully there will be some kind of rapport, but you still need to go gently,
and this is where non-directive questions can be use effectively. We will look at the
techniques you can use in this phase of the interview later.
Ask this kind of question:
You mentioned … as something that often happens, what do you feel about
that?
What’s it like when … happens?
It sounds like you have thought quite a bit about …
I wonder if you have any ideas about what might be happening in this
situation?
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I guess that having worked/lived/done … for such a long time, you’ve had
plenty of time to make your own judgements about it?
Of course, sometimes people will jump from phase one to two or three before you
had planned.
If that happens, allow the conversation to flow, rather than saying ‘stop, I don’t want
to talk about that yet’! But remember where you were, and when it seems right, pull
back the conversation by saying:
A moment ago you were telling me about …
We will consider what to do if the interview goes entirely off-track later.
Probing
Probe questions are more directive than those that you use to get each phase of the
interview going. They are aimed to jog the memory of the respondent, and take the
form of:
What did that place look like?
Can you remember what you said then?
How did it feel at that moment?
Who else was there?
Taylor and Bogdan (1984) suggest other questions that can be used to dredge up
memories:
Did your parents ever tell you stories about how you were when you were
growing up?
What kinds of stories do you tell when you get together with your
family/workmates from that time?
Exercise 4
The 3-phase interview
You want to interview a patient about having Parkinson’s disease. Produce an
interview guide for a three-phase interview. You need not write down individual
questions, just topic areas to cover in the three phases.
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7. Preparing for the Interview
Before an interview, it is necessary to do some preparatory work. Some of the
preparation will concern purely practical issues. The more important aspects
concern planning the structure of the interview. We will look at each in turn.
7.1 Practical Arrangements for the Interview
The main practical issues are:
A place to meet
You need to agree in advance where the interview will take place, and of course a
time that is mutually suitable. There are clearly advantages in arranging interviews
at a place that is known to you: you can ensure that the room is appropriate, quiet
and private, that there is adequate light and heating/air-conditioning, that there is an
electricity socket if you need this for recording equipment, that there are chairs and
if possible a table. The disadvantage is that this will be seen as your ‘territory’ and
may inhibit your interviewee from feeling comfortable and willing to speak openly.
If you opt for a place that is on the respondent’s ‘turf’, you will take a chance that
some of the above are not available. I have interviewed in many unsatisfactory
settings, from shared rooms where a telephone continually interrupted the interview,
to a mud hut in Thailand where the distractions were barking dogs and man-eating
flies!
If you do choose to go to the respondent’s choice of location, you should ask about
the arrangements and try to ensure at least that the room will enable an
uninterrupted and private interview to take place. If you are invited to a
respondent’s home, this is a good sign, but you need to ensure you will feel
comfortable and secure going to such a location. Settings where children (or pets!)
are vying for your respondent’s attention are to be avoided if possible.
NB If you are going to meet a respondent at an outside location, you should take
these precautions:
•
•
tell someone where and when you are meeting, and make sure that if you are not
back at a certain hour, that some kind of action will be taken to check your safety
carry a mobile phone
Sufficient Time for the Interview
You need to agree in advance how long the interview will take so you are able to
have sufficient time to complete it satisfactorily.
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If you are meeting on more than one occasion, try to make a regular arrangement,
and typically do not leave gaps of more than about a week between interviews. It
will help respondents if they are aware that more than one interview will be needed.
Life history research will take many meetings, over a number of months to complete.
Recording Equipment
We will look at this in the next section.
Interpreting
If your respondents do not speak English, you need to arrange for a competent
interpreter. Make sure you know exactly what language needs interpreting, and that
the interpreter is fluent in the dialect to be spoken.
If you are unable to obtain a professional interpreter, you may be able to use a
family member or friend of the respondent to translate. But this carries some risks:
such an interpreter may have their own cultural agenda and may choose to translate
accordingly. For instance, some questions may be perceived by an interpreter as
culturally too sensitive to ask. They may paraphrase what is said in either or both
directions, and you will get answers to questions you did not ask!
Interpreters need to understand the research process: there is a big difference
between interpreting in a doctor’s surgery and providing the level of accuracy of
translation that is required when you are trying to access complex reflections on
experience.
Interviewing People with Disabilities
If your respondent has a disability, you will need to prepare in advance to ensure
that you can conduct the interview adequately (for example, that communication will
be adequate) and that the respondent will be catered for physically.
Telephone Interviews
If you are interviewing by telephone, there are a number of specific practicalities.
•
You need to make sure you can record both sides of the conversation using
appropriate recording technology. Check that line quality is adequate and that
your respondent can hear you.
•
Ensure you agree a time for the interview when your respondent will not be
interrupted.
•
Make sure it is your (not your respondent’s) phone bill that is being debited for
the call!
•
Attempting to conduct group interviews using conference calling is to be avoided:
it is very hard to establish rapport among a group of people by telephone.
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Exercise 5
Preparing for an interview
You want to interview teenage women about their sexual health. List the practical
issues you need to address for this research project
8. Methods of Recording Interviews
In structured or semi-structured interviews, interviewers must record all answers
carefully, distinguishing between questions which only allow one answer and
multiple-response questions. Any verbatim answers need to be written down as
accurately as possible.
In unstructured interviews, an interviewer would normally tape record the discussion
rather than attempting to get it all down on paper. This frees the interviewer to really
listen to what is being said and respond accordingly. You should arrange to use some
kind of audio or video device to record your interviews unless there is a very good
reason why this is not feasible (for example, because a respondent is not willing to be
recorded). Consent to record the interview is necessary from the respondent. You
need to explain the confidentiality and anonymity of the interview, and this can be done
when you first agree an interview.
A small portable recorder that uses an ordinary cassette (not a mini-cassette) or
recordable CD is the best option. Cheaper, more bulky recorders are available, and
it is also possible to spend much more on a studio-quality recorder. It is probably
best to use a mono rather than stereo recorder as this can enhance the sound
quality. Do not buy a voice-activated model as any pauses during the interview will
be lost, and low-volume speech may not be recorded at all. Digital recorders are
now available which remove the need for cassettes, but do ensure you have
sufficient memory capacity to record the interviews you plan between downloads.
It is inadvisable to use a Dictaphone, as the cassettes last for a short period and
often quality of recording will be poor.
8.1 Microphones
The quality of your recordings depends on the microphone you use. Do not rely
upon the internal microphone in a tape recorder: this may not pick up voices of both
interviewer and respondent adequately.
The best microphones are omni-directional, meaning that they will pick up sounds
equally well on all sides. Small flat microphones that rest on a tabletop can be
purchased from electronics outlets. These require a battery to actuate them, and
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you must therefore remember to turn on the microphone at the start of the
interview, and off afterwards to conserve the battery!
If using a flat microphone, place it about half way between you and your respondent,
or in the middle of a table for a group interview. If you are able to avoid having the
recorder on the table top, this will minimise any hum from the motor being recorded.
An alternative is to ask your respondent to wear a lapel microphone and to do the
same yourself, ensuring excellent recording quality. You will need to check the
sockets on the recorder can take two separate microphones.
Always test the equipment before starting the interview. Set the recorder working,
and chat with your respondent for a minute. Then replay the tape to check it has
recorded adequately.
Cassettes should be of a good quality, and ones intended for voice recording can be
purchased. Sixty-minute cassettes will have a better quality than 90 or 120 minutes
ones, but you need to remember to turn over the tape after 30 minutes.
If you need to change the tape, ask your respondent to pause for a moment.
One tip I have learnt is to leave a recorder running for as long as possible. Some
respondents say important things after you have officially ended an interview. You
will miss these if you ritually switch off your machine as you say ‘well thank you,
that’s all’. Only when you are sure that a respondent has really finished, switch off.
8.2 Video Recording
Using video can pick up non-verbal behaviour but is unlikely to be worth the hassle
of setting up.
Video-recording an interview can inhibit openness among
respondents. It can be very helpful in group interviews however, as it can be hard to
discern from an audio tape who is speaking if a group is large.
8.3 One-way Mirrors
If you have the facility of a room with a one-way mirror, you could use this in order
for a second researcher to observe an interview, possibly attending to non-verbal
behaviour. However, this technique is rarely used in in-depth interviewing, being
more often used for training, clinical or psychological observation.
8.4 Note-taking
If you cannot use audio-tape, you will have to record an interview by hand. If you
can learn shorthand, this will be of great assistance. If not, you will have to make
the best of what will inevitably be a partial record of an interview. Remember to note
your own questions as well as trying to record your respondent’s answers.
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There is an argument for taking brief notes even during a recorded interview. These
should be limited to notes that can remind you to ask questions later in the
interview, notes for interviews with other respondents, and notes of any striking nonverbal behaviour. A respondent may be inhibited if you are scribbling away: far
better to keep eye contact and try to remember these times after the interview. Your
post-interview notes can be used to reflect on what was said by the respondent.
These reflections are an adjunct to the interview data. They can also enable you to
reflect on your interview style and refine this (Taylor and Bogdan 1984: 104)
After an interview, label the tape clearly so you know the name of the respondent,
the date and location. We will consider transcription of tapes in the unit on data
analysis. It is worth noting that transcription should take place as soon as possible
after an interview. Any unclear passages on the tape can then be completed with
the assistance of the interviewer’s recall of the interview.
Finally, when ending the interview, remember to give the respondent a contact
telephone number in writing for the interviewer or study organiser, as there may be
something that the respondent wants to add or ask about.
9. Conducting an Individual Interview
We have looked already at the kinds of questions that might be used during an indepth interview. In this section we turn to the techniques that can be used to make
an interview run smoothly.
9.1 Establishing Rapport
Before commencing the interview, the interviewer should take the time to explain the
reason for the interview, including the aim of the research project and what will
happen to the interview data. He/she should check whether the interviewee has any
questions. Questions should be asked in a relaxed informal manner so that the
interview appears more like a discussion or conversation. The interviewer must be
aware of the effect of body language in indicating interest, encouraging the
interviewee to talk and maintaining a non-threatening atmosphere.
9.2 Emulate a Conversation
Try to make the in-depth interview seems as much as possible like the normal
conversational situation in which people disclose information to others. You need to
try to relate to the respondent on a personal level and if this is hard for you, it is
going to affect the quality of the data. Don’t be afraid to devote some time at the
start of your interview to building a relaxed mood.
However, you should be very cautious about revealing information about yourself,
and in particular your personal attitudes or beliefs, as these may affect what a
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respondent is subsequently willing to say. If you disclose about yourself, keep to
neutral topics such as the journey to the interview, the attractiveness of the
furnishings or even the weather!
9.3 Listen
If you do not listen to your respondent, you will miss the nuances of what is being
said. Don’t think about your next question while a respondent is talking. If you
cannot remember what you want to ask next, you can always refer to the guide.
Much more likely, if you have listened intently, the next question will flow naturally
from what has just been said. It will also mean you will ask a ‘real’ question, not one
to which you already know the answer (Seidman 1998: 63 ff.).
9.4 Be Non-Judgmental
If you want a respondent to open up about their life, they need to feel secure that
they will not be judged for it. On occasions, interviewees may say things you find
objectionable, foolish or upsetting. Your role is not to judge your respondent
however, and you need to find ways to sustain a neutral demeanour. This is most
easily done if you suspend your judgments during an interview (Taylor and Bogdan
1984: 94). If this is not possible, you need to respond neutrally. For example, if a
respondent makes a racist comment that is relevant to your research topic, you may
want to say ‘tell me more about this’, rather than frown, move on to another area or
remonstrate with them for their racism.
9.5 Let People Talk
Open-ended questions are intended to get respondents to enter into a ‘stream of
consciousness’, in which few cues from you are required to keep them talking.
Practice with a mirror looking interested, nodding occasionally or even using an
‘eyebrow flash’ (McCracken 1988: 35) to indicate you want your respondent to keep
talking. Don’t frown or look away as they non-verbal cues will inhibit your
respondent. Try to adopt an open posture, not leaning forward too aggressively in
your chair, or leaning back as if uninterested. Pay attention to what is being said, as
this will ensure the conversation will flow smoothly.
Of course, on occasions, respondents diverge magnificently from the research topic,
and your skill is needed to bring them back on track without making them feel you
are bored. Try: ‘yes that’s very interesting. Could I just ask you about something
you said a moment ago’, and then go back to your main line of questioning.
Silences may be very telling. Do not feel uncomfortable with a silence in a
qualitative interview. If you do, you may try to rush in and fill it quickly with another
question. You need to give the respondent the opportunity and the time to reflect
and to add additional information. The length of the silence may be important and
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should be indicated in the final transcript. Develop your skill in leaving long pauses.
In our society, we find these uncomfortable and so often jump in with speech so
encouraging them to talk.
9.6 Be Attuned to Words and Gestures
If your respondent is leaking emotions via their body language, you will know you
are on sensitive ground. Use this positively, to encourage reflection but without
upsetting your respondent or getting into difficult areas that you may not be able to
support your respondent through. You have an ethical responsibility not to harm
your respondents through opening old wounds. Be willing to say ‘perhaps we
should move on now’, if you realise you are on dangerous ground. If a respondent
says they do not want to talk about something, reassure them that you won’t ask
about that topic.
Non-verbal behaviour can often be revealing of lies or distortions, and you can use
this to reduce the possibility that a respondent is misleading you consciously or
unconsciously. Closed posture, looking away or shifting in the seat are all signs that
what is being said may not be wholly accurate. If you suspect this is happening, you
can gently probe to see whether you can clarify, perhaps saying ‘I wonder if there’s
another way of thinking about that’ or ‘how do you feel about that deep-down?’
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9.7 Specialised Questioning Strategies
A number of specific questioning techniques are suggested by McCracken (1988:
35-7).
The Grand Tour
Start an interview with low-profile, non-directive questions to get talk going without
specifying the particular topic. This is the purpose of the life history and the daily
details of experience parts of the interview.
Floating Prompts
Repeat the last few words of what is said by a respondent, using an interrogative
tone:
Respondent: ‘… and eventually it seemed the right thing to do was change
job …’
Interviewer (neutrally): ‘Right to change job?’
If you can carry it, off, a raised eyebrow can be sufficient stimulus to keep the
respondent talking.
Planned Prompts
These are more directive and gives a respondent an opportunity to provide detail.
The contrast prompt asks something like ‘you’ve talked about x and now about y,
what exactly is the difference between these?’
The category prompt seeks clarification from a respondent to define key elements
of the story. S/he may have mentioned a specific example: you ask ‘what other
examples of that kind of thing happen?’ and from that, you are able to understand
more about how the respondent categorises her reality.
The exception prompt asks for (or immediately picks up on) an example of
exceptions to what normally happens, and to see how accounting for these helps a
respondent to reflect on the reality
The auto-driving prompt is quite intrusive. The researcher provides a stimulus: a
photograph or an object, and asks the respondent to comment upon it. This can be
used where it would be hard to generate commentary on this particular topic.
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10. Conducting a Focus Group Interview
Many of the techniques that are used in in-depth interviews with individuals may
also be applied to group interviews. However there are some additional issues that
emerge because of the rather different structure of the interaction.
10.1 Preparation
Group interviews need careful planning, and the right people need to be invited to
participate. You should beware of using ‘naturally-occurring groups’ as these may
not have adequate focus to be appropriate for research. They also need to be
facilitated adequately, to ensure they discuss what they are meant to discuss
(Morgan 1998: 34).
How large a group to interview is a moot point, but generally it is suggested that six
to eight participants is the right size group (Hedges 1985: 75-6). If group interviews
are being conducted for reasons of economy of time or cost, then this is an optimal
number, but I have conducted very productive group interviews with three or even
two participants. The value of the group interview is as much concerned with
enabling a semi-natural conversation to be recorded between participants.
There are a few obvious practical issues to be addressed. You need a room large
enough to accommodate all the participants, preferably around a table. Recording
needs to be arranged so that all participants can be adequately heard.
Transcribing group interviews can be a problem, as it may be hard to identify all the
voices in a large group. It is best to start with a round of ‘names and jobs’ so that a
transcriber will have a better chance of identifying each contribution to the
discussion.
You should explain that it will aid data collection if the discussions are orderly, and
that participants allow each other opportunities to speak without interruptions.
10.2 Techniques in Group Interviews
The key skill as a group interview leader is as a moderator, rather than specifically
as an interviewer. While some of the techniques for managing an interview noted in
the earlier section on individual interviews are relevant, typically, the objective in a
group interview is for the researcher to say as little as possible. The task is
primarily to keep the discussion on topic.
Getting Started
You will need to relax your participants, and get them talking freely. You need to
explain the purpose of the interview clearly and simply, and explain the recording
method. You also need to ensure that participants understand the confidentiality of
the research.
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You will need to introduce people to each other, and perhaps incorporate some kind
of round-robin of names and roles with a simple question such as ‘how long have
you been involved in … ?’ Everyone will have a turn to answer this initial question,
and this will at least give all a chance to speak up early in the interview.
You may want to do a further round-robin on a second question, but after that, it will
become too repetitive if you expect a structured response. You do not want to
conduct a series of individual interviews, after all! (Hedges 1985: 80-81).
Encouraging Talk
The first rounds should stimulate discussion and then it is a matter of allowing the
conversation to progress organically.
Try to avoid direct questions, as these will close down the discussion and may make
people feel they are being confronted in front of others.
If you want to explore a point, you can use the technique of repeating the last part of
a comment as a question, as was seen earlier. Try to avoid the impression of
controversy in anything that has been said, so that people do not feel nervous about
disclosing.
Neutrality
You need to give an impression of enthusiasm and interest in what is being said,
without overly partisan towards any view. You must never disclose your own views
or feelings, as this could bias the discussions. If asked directly, you may need to
explain that your moderator role means you prefer not to comment during the
interview.
Group Dynamics
An important responsibility of the moderator is ensuring that the group functions
effectively. The objective is to facilitate discussion without allowing one or more
individuals to dominate it. It may be necessary for you to interject to ensure quiet
members have an opportunity to contribute. You can ask ‘What do you feel about
that?’ to someone who has not had a chance to contribute. If one person is
dominating, you can say: ‘That’s interesting. I’d like to get other opinions on that
from around the table’.
You also need to be aware of any tensions in the group, rivalries, or anything that
could lead to disruption. If a legitimate view is being strongly challenged by a
majority of participants, you may wish to say something like: ‘Participants in other
groups have something similar, would you like to expand on your point?’
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Stimuli
Sometimes you may wish to introduce some stimulus material into the group: for
example a text or a picture. This can be used to observe how people react, and
assess the impact on individuals or the group as a whole. Scenarios are
sometimes used in this way, and this can provide useful structure to an interview.
You should not under-estimate how long it will take to discuss a scenario however,
and do not expect too much from a single focus group interview.
Overall Plan
You should have a general idea of how you expect the interview to proceed, and
some kind of time-scale for all the elements you want to cover. It is your
responsibility to ensure that the interview keeps to the expected time. Do not run on
longer than you agreed with participants.
Exercise 6
Focus Group Preparation
Devise some stimuli for a focus group interview on a participant of your choice
11. Sources of Error and Bias in
Interviewing
Because of the personal nature of interviewing, the scope for introducing error and
bias is quite large and can affect all the following stages of the interviewing process:
§ asking the questions
§ recording the answers
§ coding the answers
§ interpreting the answers
Sources of interviewing error will affect a study randomly, i.e. in all directions,
whereas sources of interviewing bias affect the study results systematically, i.e. in
the same direction. Sources of error include:
• deviation from the written instructions in a structured interview , e.g. not following
the correct order of questions, not following the correct filters on the question
routing, not using show cards with pre-coded answers, reading out pre-coded
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answers which were not to be read out, and changing the wording of the
questions.
• interrogation error, which occurs when questions are phrased differently from
respondent to the next, for example, asking ‘What is your age?’ could produce a
different response than asking ‘How old are you?’ Use of the word ‘old’ can result
in some respondents giving a younger age.
• interpretation error, which occurs when the interviewer has to make a subjective
judgement as to how to code an answer. This is most likely to happen when the
potential answers are pre-coded and the interviewer has to attempt to squeeze
the respondent’s answer into an existing box.
• recording error. It is generally recognised that the more an interviewer has to
write down, the more likely he/she is to make a mistake in the recording of that
data. There is a tendency to abbreviate answers, not necessarily correctly.
Exercise 7
Minimising error and bias in qualitative interviews
In a qualitative interview, how would you reduce interviewer error and bias?
11.1 The Pilot Study
In order to ensure that you will achieve your objectives in an interview, that you can
ask the ‘right’ questions or that you have not forgotten or omitted some issue that is
really important to the respondent, you will need to conduct a pilot study using your
draft questionnaire.
The ideal situation is to try the interview on one or two respondents who are similar
to those in your sampling frame, perhaps slightly more if you are doing a structured
interview where you need to ensure equivalence of questioning. However, if the
real participants are difficult to access or few in number, then you may have to test
the questionnaire on slightly different participants. At the very minimum, you could
try out the questionnaire on your colleagues or friends
It is essential that the interview be phrased in plain and clear language. If the
participants of your study are to be members of the public, you should pilot the
interview with a lay person in preference to a professional colleague, even if the lay
person is a friend or relative. You may be so familiar with medical terminology and
jargon that you forget other people may not understand it.
You can also use a pilot interview to test the equipment and make sure both parties
are audible. Carry out pilot interviews a few days before you begin interviewing in
earnest, so you can remember what worked well in the pilot.
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Exercise 8
Avoiding Poor Questions
Read the attached transcript below of a research interview between a practice nurse
and a patient. Identify (by line number) those parts of the interview where the
interviewer asked:
1. leading questions (where the question encourages a particular answer)
2. ambiguous questions (where the meaning is unclear)
3. two questions in one sentence
4. State how this may have influenced the outcome of the study, and suggest ways
in which the questions could have been better phrased.
The study below aims to explore how parents decide to use their primary care
services when their children are ill. (I = Interviewer, R = Respondent)
1
I
: Thank-you for agreeing to spare me some time for this interview.
2
I’m doing a study of parents with small children - I’m interested in how
they use
3
their local General Practitioner services.
4
I’d like to ask you some questions about the times when your child has
been ill.
5
How old is she?
6
R : Six. She was six in June.
7
I
8
R What do you mean by ill? How ill?
9
I
10
Can you tell me about the last time she was ill?
Well, anything really, not necessarily ill enough to go to a doctor. I
mean, eh, has
she had any colds or high temperatures or anything like that or more
serious illness?
11
R Yes.
12
I
13
R She had a bad cough and cold about two months ago.
14
I
15
R Well, I didn’t take her to the doctor straight away. I gave lots of Calpol
She had em?
And how did you handle that? Did you take her to the doctor?.
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and I
16
waited, and I tried to keep her cool, but then she seemed to get hotter
and hotter
17
and eventually by night-time I decided that I had to call the doctor out.
18
I
19
R About 3 am. She’d been awake all night and she’d been getting hotter
and hotter
20
What time was this?
and I got more worried. You know how it is when you’re worried.
21
I
You were worried about meningitis?
22
R Yes, she was very poorly, so I called the doctor out.
23
I
24
R It was a woman. A different doctor. She came very quickly actually. I
was
25
surprised she came so quickly. I thought that we would be waiting all
night, you
26
know. But she was there within half an hour.
So you asked for a home visit. How quickly did he come?
27
I
What did she do?
28
R Well she took Anna’s temperature and, you know, she said she was OK.
Not to
29
worry and that if we were still worried we should go to the GP in the
morning. I
30
wanted some antibiotics but I didn’t get any.
31
I
32
R Eh, yes.
33
I
34
R Well, I gave her some Calpol, but then I took her down to the health
centre and
35
So the next day did you take her to the GP or did you treat her yourself?
Sorry, did you treat her yourself?
we saw DR X and he examined her and I felt more reassured.
36
I
37
R Yes. I needed somebody to look at her properly and to listen to me.
38
I
39
R (silence - respondent thinking) Well, I think she was ill around
Christmas. She
40
41
Good. Was that reassurance important?
What about the time she was ill before that?
had chickenpox.
I
She must have felt pretty ill with that?
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42
R No, actually. It hardly seemed to bother her. She was covered in spots,
but she
43
carried on playing with her presents and she didn’t like it when I told her
she couldn’t go to school.
44
I
45
R Yes, of course. As soon as I saw the spots. I took her straight down.
And we
46
Did you take her to the doctor’s?.
saw Dr X. He knew what it was straight away.
47
I
48
R I’m not sure. I just wanted to know what the spots were. I wasn’t worried
‘cos
49
So at what point did you decide to go to the doctor’s?
there was a lot of it about at the time.
50
I
How did you decide whether to go to the doctor’s or call out a doctor for
a home visit?
51
R Well, it depends on the time of day and how worried you are.
12. Handing and Analysing Interview Data
The way you analyse your interview data will depend on whether your interview is
structured or unstructured.
12.1 Structured Interview Data
With structured interviewing, most answers will be either pre- or post-coded. They
can then be subjected to statistical analysis. Interviews will need to be coded so
that all responses can be allocated a number. This data can then be loaded into a
data file, for use in a statistical package.
Most people use either SPSS or EPI-Info to carry out their statistical analysis.
SPSS is very user friendly but it can be very expensive to purchase. EPI-Info on the
other hand is freely available (for further details of these two software packages you
are advised to refer to the Trent RDSU Resource Packs An introduction to Using EPI
Info and An Introduction to Using SPSS.)
For further details on quantitative data analysis you are recommended to read the
Trent RDSU Resource Pack An Introduction to Using Statistics in Research.
12.2 Qualitative Interview Data
If you have carried out a semi-structured or an in-depth interview (or have openended questions in a structured interview), then you can analyse the data using
qualitative methods. It would be quite wrong to try and quantify the results of an indepth interview. For instance if you carried out ten in-depth interviews you should
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not say that six out of the ten people interviewed took a particular viewpoint.
Instead you should be looking at how and why the respondents differ in their views.
The first stage of qualitative analysis is to examine your transcripts of all your
interviews. It is important that you get all the tapes of your interviews transcribed. It
is much more difficult, if not impossible to try and do your analysis from the tapes
alone. Using transcripts means that you pick up on the detail, including all of those
points that you might have forgotten. But don’t forget to allow sufficient time to get
the tapes transcribed. This can be a very painstaking process and you should never
underestimate the amount of time that it can take.
Once you have all of your transcripts together, you will need to carry out some form
of thematic analysis. This is really a systematic way of identifying all the main
concepts which arise in the interviews, and then trying to categorise and develop
these into common themes.
Most people now use a qualitative data analysis software package such as NVivo or
AtlasTI to conduct qualitative analysis.
For further details of how to analyse qualitative data, you should read Trent RDSU
Resource Pack An Introduction to Qualitative Research.
13. Summary
Interviewing covers structured, semi-structured and unstructured or qualitative
approaches. You should be able to describe the main advantages and disadvantages
of each of these, and also of face-to-face, telephone and focus group interviews. I have
looked in detail at the preparation for interviewing, the structure of these different kinds
of interview, and the skills and techniques needed for a successful interview.
Interviewing is an important method of data collection in research in health and
medicine, and plays a role in many research studies, especially where data on
experiences or beliefs is needed. The theory can be learnt from a text such as this,
but what is also needed is practice!
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14. Answers to Exercises
Exercise 1
1. Individual web-based in-depth interviews could be used as this is a sensitive
issue and this may be a hard-to-reach group.
2. Individual semi-structured telephone interviews, as these busy professionals
may be hard to access for face-to-face interviewing
3. Semi-structured focus group interviews with a range of caring agencies
4. Individual face-to-face interviews
Exercise 2
1. Representative sampling using a structured interview schedule
2. Small samples to cover main sub-groups e.g. elderly, young parents
3. Theoretical sampling to gain broad selection of patients.
Exercise 3
1. In general, there may be conflicts of interest, especially if you are in a position of
power in relation to colleagues. Workers may not be willing to speak openly to
someone they know, because it may breach informal rules about privacy in the
workplace. Friends may be poor interviewees, as they may make assumptions about
shared beliefs.
2. Approaching informal gatekeepers may facilitate access to a group. However, if
they are self-appointed, working through them may actually inhibit access to
colleagues who resent their self-importance.
3. An over-enthusiastic potential interviewee may wish to use the opportunity of an
interview to criticise the organisation or a colleague. While this may be important, to
shed light on an aspect of the micro politics of a setting, this may not be relevant to
your study, and may be a waste of both your times, as the data will not be useful.
However, such a person could be a useful informant and maybe a contact to obtain
other respondents.
Exercise 4
Have a look at section 6 of this pack for suggestions about the kinds of questions in
each stage of the interview.
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Exercise 5
Some of the issues you will need to consider are:
a) a neutral place to conduct the interviews. Their family homes may not be
conducive to open-ness, but a health clinic could seem too impersonal and
‘cold’.
b) if you are going to a destination outside your control, make sure a colleague
knows your movements and carry a mobile phone.
c) if you are going to use a recorder, make sure you know how to operate it.
You will need to ask permission to record and plan what to do if permission is
refused.
d) check if you will need an interpreter for any of the participants who may not
speak good English.
Exercise 7
There is no single right answer, however some possible suggestions are:
§ train all of the interviewers in the appropriate skills.
§ ensure that all of the interviewers are thoroughly briefed on the research topic.
§ pilot the interview.
§ accompany interviewers and monitor their questioning and recording.
§ use structured questions where possible and avoid verbatim answers.
§ avoid having to select a pre-coded response for a verbatim answer - let the
respondent select the code where possible.
§ avoid giving strong personal opinions; in particular do not show disapproval or
disagreement with the respondent, regardless of what you may really think.
Exercise 8
1. Leading questions (by line number): 21, 23, 38, 41
2. Ambiguous questions: 9, 38
3. Two questions in one: 9, 14, 31, 50
There is a danger that the interviewer could have confused or biased the interview.
The interviewer assumes a number of things, for instance, that the doctor was male,
or that the chickenpox had made the child feel ‘pretty ill’. Luckily the respondent
actually corrects her on these points but it may not always be so easy to pick up. If
it’s a minor matter, the respondent may not bother to clarify the question.
Questions should be phrased without assumptions, for example, at line 21, the
question ‘You were worried about meningitis?’ could be rephrased as ‘What in
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particular were you worried about?’ Likewise line 36 could be replaced with ‘How
important was that reassurance?’
There are a number of questions where the interviewer asks two questions instead
of one. The interviewer then has to probe the respondent’s answer, otherwise she
would not have been able to interpret the answer. Obviously it would be preferable
to break these multiple questions up and ask them one at a time.
15. References
Hedges A (1985) Group Interviewing. In Walker R (ed.) Applied Qualitative
Research. Aldershot: Gower.
Jones S (1985) In-depth interviewing. In Walker R (ed.) Applied Qualitative
Research. Aldershot: Gower.
McCracken G (1988) The Long Interview. London: Sage.
Morgan DL (1998) The Focus Group Guidebook. London: Sage.
Seidman I (1998) Interviewing as Qualitative Research. New York: Teachers
College Press.
Taylor SJ and Bogdan R (1984) Introduction to Qualitative Research Methods. New
York: Wiley Interscience.
16. Further Reading
May N and Pope C. (1995) ‘Qualitative Interviews in Medical Research’. British
Medical Journal, 311: 251 – 253.
Miles M, Huberman A. (1994) Qualitative Data Analysis. Thousand Oaks CA: Sage.
Oakley A. (1981) ‘Interviewing Women: a contradiction in terms’ in Roberts H (ed)
Doing Feminist Research. London: Routledge.
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