In-depth interviews involve direct engagement with individual participants. It is a qualitative data collection method where the interviewer follows a semi-structured guide but may adapt its structure and ask the participants different questions based on their responses.
In-depth interviews prove to be highly helpful in situations where individual participants’ emotions, sentiments, opinions, values, etc., are essential to the study or research being conducted. The interview duration for individual participants may differ, and the questions may vary depending on responses. Therefore, this method is pretty flexible in terms of its design.
Use In-depth interviews when your research question needs deep probing and requires one-to-one interaction with participants. Do not use in-depth interviews when you seek quantitative data or what you want is evidence of responses. This method requires a deep understanding of the cultural and psychological context of the customer, and answers need interpretation.
Do's
You should collect information about the interview in written, oral, or video form to revisit it later. Recording data from the interview will provide you with valuable details when you move into the next phase. Returning to your notes and records instead of recalling everything from memory will give you more information and generate more insights. You can use any of the following methods (using multiple methods is highly encouraged).
Nevertheless, try to do your post-interview debriefs straight after the interview when memory and impressions are still “fresh” and compare notes, discuss impressions and align on key insights and takeaways from the interview.
Write down an ad-hoc script of the interview with essential quotes and statements from the interviewee. Assign a note taker - the role should be done by another person than the one who is conducting the interview.
Write down how the interviewee behaves, what you see in their body language, what questions they ask, where they get stuck or surprised etc. You might optionally assign an observer for this task.
Use a device with a voice recorder to record the interview. Make sure that only one person speaks at a time. For in-person interviews, put it close enough to the interviewee and avoid background noise (e.g., typing on the keyboard, rustling paper). Always ask for consent from the interviewee before starting the recording.
Use a camera with an integrated microphone to record the interview. Make sure that the field of vision is focused on the interviewee's face and hands. Always ask for the consent of the interviewee before starting the recording.
Your behaviour as an interviewer and the interview setting can influence the interviewee’s level of comfort and the insights you can generate from the interview. In the following, we present some insights into how to behave during an interview and what to consider.
Things to consider
The atmosphere and the surrounding during an interview play an important role. Keep in mind that several factors can influence the interviewee’s level of comfort and be aware of the essential dimensions of social situations:
Getting valuable insights
Tolerate silence before the interviewee responds to give them enough time to think (count to 15 in your head before following up or rephrasing the question).
In Semi-Structured or Open-Ended Interviews, you get personalised insights from the customer. By showing that you are listening and encouraging them to explore more deeply or by extending the answer to a question, you get a deeper understanding of underlying challenges and motivations. In the following, a couple of sample questions and commenting techniques are listed, which you are encouraged to use during your interviews.
Following up on the customer's answers
Suggestions for active listening
When planning your interviews, consider whether you want to conduct them in person or remotely via an online conference tool. Each method has advantages and disadvantages, and the best way depends on your specific situation.
In-Person Interviews
+ Easy to establish a personal connection with the interviewee (e.g., by welcoming him in person, shaking hands, etc.)
+ Behavioural nuances and body language during the interview are easy to understand (e.g., surprised reactions, eye movement, breathing)
− Time-consuming through the set-up of the room and potential travel time
− The limited geographical reach of interviewees
Things to consider for In-Person Interviews
Remote Interviews
+ Less time effort as no room preparation and travel time
+ No constraint in geographical reach (be aware of time zones, though!)
+ Can be recorded without additional equipment
− The interview could be interrupted (bad signal, background noise)
− Limited field of vision through a camera and narrow interpretation of body language
− More difficult to build rapport
Things to consider for Remote Interviews