Discovery Interview Principles
Learning objective: Use neutral, concrete-event, evidence-probing questions and avoid leading questions.
A leading question already implies the answer, e.g. "isn't this process really inefficient?", the interviewee tends to agree without describing facts. A neutral question asks about a concrete event instead: "what happened the last time you handled this?" Evidence probing follows an impression-based answer with a request for specifics: "you said 'often', roughly how often? When was the last time?"
| Field | Meaning |
|---|---|
| Does it hint at the answer? | Yes -> rewrite as an open question |
| Is it about an impression or an event? | Impression -> ask for the specific last time |
| Does it ask for evidence? | No -> add "how do you know that" |
Interviewing an admin office about its leave-request process. Leading: "isn't sign-off really slow?" Neutral + evidence probing: "the last time you submitted a leave request, how long did it take your manager to approve it? If you remember, what date did you submit it and what date was it approved?"
Leading question (hints at the answer)
- "Isn't this system really hard to use?"
- "Doesn't everyone think this process is too complicated?"
- "Isn't approval always really slow?"
Neutral + evidence probing (asks for the event)
- "The last time you used this system to finish a task, how long did it take, and where did it get stuck?"
- "What actually happened the last time you went through this process?"
- "Do you remember the last approval: what date was it submitted, and what date was it approved?"
- Ask an open question
Do not presuppose a direction; ask "what happened" rather than "isn't this bad". - Pause on impression words
When someone says "often", "a long time", or "everyone", note it down but do not treat it as fact yet. - Probe for the specific last time
"When was the time you're thinking of? How long did that one take?" This pulls an impression back to a concrete event. - Probe for the source of evidence
"How do you know that? Did you experience it yourself, or hear it from someone else?" This checks how reliable the information is.
Info
Warning
Which question best fits the neutral, concrete-event, evidence-probing principle?