the participant reveals personal information about themselves(e.g. behaviours, emotions, beliefs, attitudes and memories) in response to a series of questions
interview
information is gained from an experimenter directly asking participants questions (generally on a one-to-one basis) and recording their responses. can also be conducted over the phone
questionnaires
a written self-report technique where participants are given a pre-set number of questions to respond to. They can be administered in person, by post, online, over the telephone, or to a group of participants simultaneously.
what are the two types of questions asked in a questionnaire?
Open-ended and closed-ended.
open questions
the question is phrased in a way that allows the participant to answer in any way they choose. This produces qualitative data
closed questions
the question is phrased in a way that limits participants' responses to only a few fixed options. e.g. do you like X, yes or no. this produces quantitative data
open questions strengths
as the participants have the freedom to choose their responses, this can be argued to lead to more valid responses
open questions weaknesses
qualitative data makes data analysis between large numbers of participant responses much more difficult, making it harder to spot patterns in responses
closed questions strengths
quantitative data allows easy data analysis between large numbers of participant responses, making it easier to spot patterns in the data set
closed questions weaknesses
the participant's responses are limited to a fixed set, this can be argued to be less valid as responses may just be the best fit, not how they really feel
designing interviews and questionnaires
how the researcher constructs the study
avoiding complex terminology
participants may not understand the terms used and if they feel too embarrassed to ask for the meaning, or unable to in a questionnaire they may guess the meaning resulting in inaccurate responses
rewording questions
using a skilled interviewer means questions that participants don't understand can be reworded, this should be in a way that doesn't change the question's meaning so responses can be compared to others
leading questions
Leading questions are questions that are worded to suggest a particular answer. For example, if you say 'did you see the broken glass? ' it implies that there was broken glass and therefore the witness is more likely to say 'yes'.
how can leading questions be avoided?
questions should be written in a way that doesn't suggest a correct way of responding. e.g. what did you prefer about condition A
piloting questions
running a small scale version of the interview or questionnaire can identify questions that are confusing, give away the aim or don't produced a useful/detailed response. These can then be changed before the larger-scale study
filler questions
questions that are not linked to the research aim, but can be added to interviews to put the participant at ease and build rapport for more challenging questions. They can also be added to interviews/questionnaires to act as red herrings and help to hide the research aim, reducing demand characteristics
structured interview
the interviewer reads out a list of prepared questions as they are written.
structured interview strengths
-the interviewer doesn't have to be highly trained to conduct the interview
-a structured interview can be easily repeated because the questions are standardised, meaning answers from different people can be compared
structured interview weaknesses
responses by the participants can't be followed up with additional questions that can give more detail
comparability may be a problem if the same interviewer behaves differently on different occasions(low reliability)
unstructured interview
no setlist of questions, an open conversation about a topic
unstructured interview strengths
rapport can be built so the participant may feel more comfortable to answer questions
interesting responses can be followed up with additional questions
unstructured interview weaknesses
a highly trained interviewer is required to think of appropriate questions in the moment
every interview will be very different, making comparisons difficult(low reliability)
semi-structured
combination of prepared questions with ability to ask additional questions
semi-structured interview strengths
the interview responses are easy to compare because of the same questions asked
The interviewer can ask follow up questions for more detail
rapport is more likely so participant will feel more comfortable answering questions
semi structured interview weaknesses
a highly trained interview is needed to think up appropriate questions in the moment
self-report techniques strengths
when the same set of questions are used, they are very easy to replicate.
the use of closed questions allows data analysis. open questions allow participants the chance to freely report their experience
self report techniques weaknesses
suffer from bias for example social desirability bias
questionnaires strengths
don't require a trained interviewer and can be distributed easily, making collecting a large amount of date a cheap and easy process
when using closed questions, many responses can be easily compared
questionnaires weaknesses
questions that participants don't understand cannot be rephrased
questionnaires are often not taken seriously, this can result in acquiescence bias
how can acquiescence bias be tested
by asking the same question again later in the questionnaire but in reverse
interview strengths
can rephrase questions that are difficult to understand
can build rapport making it more likely the participant will answer truthfully
interview weaknesses
requires an interviewer- this slightly increases the cost per participant
interviewer effects, personal characteristics of the interviewer can alter the response of the participant