Overview
My first entry into the Rosenfeld Media books was a hit. Interviewing Users: How to Uncover Compelling Insights by Steve Portigal digs into the world of market research and ethnography. If you're entering the world of user testing, I suggest first reading Rocket Surgery Made Easy by Steve Krug. That book does a great job of providing a foundation and overview. Interviewing Users should be your second book of entry into user testing. It digs a little deeper into topics such as a) the stages of an interview b) how to ask questions and c) problem Interviewers.
As I mentioned earlier, Interviewing Users works from a market research/ethnographic approach. So it's not going to provide step by step instructions on doing usability testing, but it will help you think about the overall structure of your testing.
Stages of the Interview
Much like the stages of grief, for Portigal, there are also stages of interviews. They include:
1) Crossing the threshold
2) Restating objectives
3) Kick-off questions
4) Accept the awkwardness
5) The tipping point
6) Reflection and projection
7) The soft close
Described in more detail:
1) This is the moment when the interviewee enters the actual office, room, etc. in which they will be interviewed. This is also when you as the interviewer set up your camera, get the seats situated, etc.
2) Who knows under what conditions the interviewee was drafted? Take this moment at a high level to explain what will happen, how long, etc. Do they have questions?
3) Start with the broad and work to the specific. Your first question, should be one which eases the user into the line of questions. For example "What is your job?"
4) The interviewee although you've reminded them this is not a test of them, will feel uncomfortable, perhaps even resistant. Go with it and accept that this part of the process. Put them ease. Be patient. Ask questions.
5) One can't predict when this will happen, but a transition will occur with the interviewee and you the interviewer. A rapport will begin to develop.
6) You'll be capturing the interviewing details and then the interviewer begins to think outside of the immediate on a more high level.
7) The questions have been asked and it's time for the interviewer to go home. Keep the camera or recording device rolling. This is the moment when crucial information may be revealed. Portigal calls this the "doorknob phenomenon."
Silence as Encouragement to Talk
Portigal discusses at length the importance of quiet. He delves into interviews he's conducted in Japan. Quiet/silence acts as a way to suggest encouragement to talk, respect and thought about a question asked and even to suggest the difficulty of a question asked. While Americans he contrast as having less intense social code around quiet, he does advocate for give pauses after an interviewer has provided an answer. While part of you as new interviewer is screaming to say something, take a moment. There may be more insights the interviewee has to share with you.
I won't go into all of the specifics, but Portigal also has a nice list of about 18 questions which will help you dig deeper into the participant's understanding and answers. The question categories for these include - gathering context and collecting details, probe what's been unsaid and contrasts to uncover frameworks.
Problem Interviewees
The Quiet One
How do you get someone to open it who's giving you simple 1-2 word responses? The author advocates trying to determine the source of their discomfort. Are you discussing some sort of social taboo? Tapping into an element of their insecurity about their work, life, etc? Be flexible in these situations and adjust your questions. Perhaps change the topic or share something about yourself. If none of these approaches works, be direct and ask what is their source of discomfort. Consider changing the time and location of the interview.
Who are you and where did you come from interviewee?
Ideally you've screened your interviewee, but things happen and people slip through the cracks. So you've got the wrong kind of interviewee? Reevaluate how you screened, maybe a particular word in the criteria had multiple meanings. Also don't consider the interview a total wash. Take the time to gain what you can from this person.
The Talker
First and foremost evaluate if you're getting the answers you want. Do by all means give them space to talk, but if their headed in another direction redirect their line of answers. When all else fails interrupt and remind them of the time constraints of the interview and that you want to make sure to cover all of the topics on your lists to help the project, client, etc.
Final Thoughts
There are certainly more gems to be found in Interviewing Users and as it's a mere 170 pages a no brainer to add to your reading list.