Reliability
The same interview can be repeated due to standardised questions
Validity
Low since the interviewer has to persist with a particular line of questioning, the responder can misinterpret the question
Theoretical
Interviewer bias may cause people to respond negatively to the status or characteristics of the interviewer
Social desirability - don’t want to sound bad in front of someone else
Practical
Time consuming + not full reports
Example
Lupton conducted in depth interviews with head teachers and teachers in economically deprived neighbourhoods- to test schools in these areas become ‘failing schools’