Questionnaires and interviews should aim to be systematic and objective.
The way questions are designed is important as it can largely impact the type, variety and validity of the responses that you get
For example, we might consider the following things:
Being mindful of when it is appropriate to ask open or closed questions
Avoiding any leading questions
Ensuring questions are clear and easy to understand
Considering the sequence of questions
Being aware of body language and listening skills in interviews
Considering the best place to carry out interviews
Rating scales: a five (or seven) point scale that asks respondents to identify a value that represents their strength of feeling about a particular topic
e.g. How entertaining do you find Zombie films?
Likert scales: a five (or seven) point scale which is used to allow the individual to express how much they agree or disagree with a particular statement.
e.g. Zombie films can have an educational value
Fixed choice options: includes a list of possible options and respondents are required to tick those that apply to them.
e.g. For what reasons do you watch Zombie films? (insert multiple options below)
When writing questions there are 3 guiding principles:
Clarity
Bias
Analysis
In addition to clarity, bias and analysis being taken into account, a good questionnaire will also consider other things:
Filler questions
Sequence for the questions
Sampling techniques
Pilot study
Clarity: should be written so respondent understands what they are being asked
No ambiguity
Avoid double-barrelled questions and double negatives
Avoid jargon
Bias: questions that might lead respondents to be more likely to give a particular answer.
No leading questions
Social desirability could be a problem here
Analysis: written so that answers are easy to analyse
Closed questions
Filler questions: irrelevant questions to distract from main purpose of survey – this could reduce demand characteristics
Sequence for the questions: starting with easier questions and saving harder one until later
Sampling techniques: considering the way respondents are selected
Pilot study: testing questions on small group so that they can be refined
Designing a questionnaire:
Know the exact aim of the study
Short and to the point
Do a pilot study
Incentives
Appearance of the questionnaire
Ordering of the questions... simple questions first (age, gender)
An interview schedule that outlines a list of questions that the interviewer intends to cover
This should be standardised to reduce interviewer bias
Notes tend to be taken OR it may be recorded and analysed later
Interviews tend to involve single participants (although group interviews are sometimes appropriate). In the case of one-to-one interviews the interview should:
Be in a quiet room away from other people
Begin with neutral questions to make interviewee feel relaxed and built rapport
Interviewees should be reminded answers will be treated in confidence
Interviewees should be reminded about other ethical issues