Be aware of questions that have already been asked and avoid repeating them.
Avoid pushing too much and asking why too often.
Ask clear questions so the person being interviewed isn't confused and so it is easier for the interviewer to analyse the data accurately.
Non verbal communication:
Sitting with arms crossed, flowing with disapproval and disinterest -> Discouragesrespondents to speak
Nodding and leaning forward -> Encourages respondents to speak.
The presence of an interviewer who is interested in the respondents answers may increase the amount of information provided, even in an unstructured interview.
Questions should be standardised (same for everyone) as it helps avoid interviewer bias but is only achievable in structured interviews.
The interviewer may make notes although this may interfere with their listening skills.
Alternatively, interviews may be audio recorded or video recorded.
Unstructured Interview - Strengths:
More detailed information can be obtained
Unstructured Interview - Weaknesses:
Required interviewer with more skills because the interviewer has to develop more questions.
Questions may lack objectivity due to the quick nature of creating the questions.
More expensive due to the need for an experienced interviewer.
Social desirability may be an issue.
Interviewerbias.
Unstructured Interview:
New questions are developed during the interview.
Interview may begin with general aims and possibly a few pre-determined questions.
Structured Interview:
Has pre-determined questions
Interviewer cannot deviate from original questions (cannot change questions or ask follow up questions).
Structured Interview - Strengths:
Can be easily repeated because the questions are standardised - Higher reliability.
Different people can be compared due to the standardised questions.
Answers are easier to analyse due to being predictable.
Structured Interview - Weaknesses:
Comparability can be difficult if the interviewer behaves differently or if there is a different interviewer for different people.
Interviewer bias.
Social desirability may be an issue.
Semi-Structured Interview:
Involves a mixture of structured and unstructured questions.
Usually starts with a list of questions but the interviewer can ask follow up questions to the participant's answers.