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Effective interview questions are tied to a specific competency the role requires and are designed to surface evidence of that competency—not general conversation, not hypothetical opinion, not a candidate's ability to tell a compelling story. The best questions produce answers that can be evaluated against clear criteria and compared consistently across every candidate interviewed for the role.
A question is only as useful as the competency it's probing for. Generic questions—"tell me about yourself," "what's your greatest weakness," "where do you see yourself in five years"—produce answers that are hard to evaluate against role-specific criteria because they weren't designed with any criteria in mind.
Effective questions start with a defined competency and work backward: what would a candidate need to say or demonstrate for an interviewer to conclude they have this skill at the required level? The question is the mechanism for surfacing that evidence.
Questions that ask candidates what they have done produce more useful evidence than questions that ask what they would do. Past behavior in specific situations is a more reliable signal of future performance than a candidate's ability to construct a plausible-sounding hypothetical response.
"Tell me about a time you had to align a team around a decision they didn't initially support" gives an interviewer concrete material to evaluate. "How would you handle a situation where your team disagreed with a decision?" gives an interviewer a window into how a candidate thinks about a scenario—which is a much weaker signal.
An effective primary question opens the door. Follow-up questions are what determine whether useful evidence actually comes through. When a candidate gives a vague or incomplete answer, a follow-up that probes for specifics—"what was your role specifically," "what did you do when that didn't work," "how did you measure the outcome"—is what converts a non-answer into usable data.
This is where many interviews lose structure. Without a prompt to follow up, interviewers accept incomplete answers and move on, leaving gaps in the evidence that get filled later by overall impression.
A question is only useful for comparison if every candidate for the same role is asked the same core questions by the same interviewer. When interviewers improvise or vary their questions between candidates, the feedback they produce can't be compared—it reflects different conversations, not different candidates evaluated against the same standard.
Consistency doesn't mean the conversation has to feel rigid. Interviewers can adapt their tone, follow interesting threads, and ask natural follow-ups while still covering the same competency-mapped questions for every candidate they see.
Lavalier generates competency-mapped interview questions directly from role intake—so questions are tied to what the role actually requires, not assembled from a generic bank. Live Guidance surfaces follow-up prompts in real time when answers are incomplete, so interviewers get the evidence they need rather than moving on from a non-answer. Try it free on your next role.
