Matching Pairs Types of in-depth interviewsOnline version Identify and match the definition to the correct type of interview by Michelle Nguyen 1 key informant interviews 2 semi-structured interviews 3 focus group interviews 4 structured interviews 5 unstructured interviews interviewers are guided by structure and may combine fixed-response and open-ended response questions. chosen because of expertise in the area being researched, individuals chosen are influential, prominent, & well-informed ppl in an organ/comm typically a homogenous group with a specific area of experience – between 4-12 participants per group with interviews lasting 1-2hrs. interviewers are trained to ask questions precisely; and may combine fixed-response and open-ended questions. general guide allowing participants to answer or expound on the topic as they choose; gentle probes may be used to gain deeper responses.