list of pre-determined questions to ask in a fixed order
+ easy to replicate; straightforward to replicate due to standardised format = format reduces differences between interviewers
-interviewers cannot elaborate; cannot deviate from the topic or explain the questions ... limits the richness of data collected
Unstructured interview
no set questions, there is a general topic to be discussed but the interaction is free-flowing and the interviewee is encouraged to elaborate
+ there is greater flexibility; unlike a structured interview, points can be followed up if they arise = more likely to gain insight into interviewee's worldview and collect unexpected information
-increased risk of interviewer bias; closer dialogue between interviewer and interviewee = means more opportunity for unconscious cues
Semi-structured interviews; list of questions that have been worked out in advance but interviewers ask further based on previous answers