Structured Interviews vs. Traditional Interviews
By Vriti AI Interview team · Published · 4 min read
A structured interview asks every candidate the same job-related questions and scores their answers against a rubric agreed in advance. A traditional, unstructured interview lets each interviewer steer the conversation and reach an overall judgement. Research has long found structured interviews to be the better predictor of job performance, and they are easier to keep fair. Traditional interviews feel more natural. For most hiring decisions structure wins, and it does not have to make the conversation feel mechanical.
What makes an interview structured
Structure is not a single feature. It is a set of practices, and an interview becomes more structured the more of them it uses:
- Questions come from an analysis of the job, not from the interviewer’s favourites.
- Every candidate for the role gets the same core questions.
- Answers are rated on a defined scale, ideally with descriptions of weak, solid and strong answers.
- Each question is tied to the criterion it is meant to assess.
- Interviewers take notes during the interview and score each answer separately.
- When there are several interviewers, they score independently before comparing.
Most real interviews sit somewhere on a spectrum. A “semi-structured” interview has fixed core questions but lets the interviewer choose follow-ups, and that is where most teams end up.
What makes an interview traditional
In a traditional interview the interviewer decides on the day what to ask, often building on the CV and on whatever comes up. The evaluation is an overall impression, usually written up afterwards: “strong hire”, “not sure about culture fit”. It is how most people learn to interview, because it needs no preparation and feels like a normal conversation.
Side-by-side comparison
| Structured | Traditional | |
|---|---|---|
| Questions | Set in advance from the job requirements and shared by all candidates | Chosen by the interviewer, often different for every candidate |
| Evaluation | Each answer scored against defined criteria and anchors | Overall impression formed during or after the conversation |
| Comparing candidates | Straightforward, because everyone answered the same questions | Difficult, because each candidate had a different interview |
| Exposure to bias | Lower: criteria are fixed before anyone is met | Higher: first impressions and similarity shape the questions and the verdict |
| Preparation | More up front: questions, criteria and anchors | Very little |
| Interviewer skill needed | Moderate: the format carries much of the load | High: quality depends heavily on the individual |
| Record of the decision | Notes and scores tied to criteria | Usually a short summary of an opinion |
What the research says
Personnel psychologists have studied interview formats for decades. A widely cited 1998 meta-analysis by Frank Schmidt and John Hunter found that structured interviews predicted job performance better than unstructured ones. A 2022 re-analysis by Paul Sackett and colleagues revised many earlier estimates downwards, yet structured interviews still came out among the strongest predictors they reviewed.
The reason is not mysterious. When everyone answers the same job-relevant questions and is scored the same way, differences in scores are more likely to reflect differences between candidates than differences between interviewers.
Common objections to structure
“It feels robotic”
It only does if you read the questions like a script. Introduce yourself, explain how the interview will run, and use natural transitions. Candidates generally appreciate knowing that everyone is asked the same things. It reads as fairness, not coldness.
“I can’t follow interesting threads”
You can, as long as they serve the criterion you are assessing. “Tell me more about how you decided that” is a good follow-up to a problem-solving question. A ten-minute tangent about a shared former employer is not.
“Experienced interviewers don’t need it”
Experience makes interviewers more confident, but confidence and accuracy are different things. Experienced interviewers are also the ones whose habits are most entrenched. Structure makes their judgement comparable with everyone else’s, and teachable to new interviewers.
When a less structured conversation is fine
Some conversations in a hiring process are not assessments: the hiring manager selling the role to a finalist, a coffee with the future team, answering the candidate’s questions. These can and should be open and informal. The rule is simple: if a conversation feeds the hiring decision, structure it. If it does not, make sure nobody quietly treats it as if it does.
How to move from traditional to structured
- List the job’s critical tasks with the hiring manager, and pick the four to six skills that matter most.
- Write one or two questions per skill. Mix behavioural questions (“Tell me about a time you…”) with situational ones (“What would you do if…”).
- Write anchors describing a weak, a solid and a strong answer to each question.
- Build a scorecard with one score and one evidence note per criterion.
- Pilot it on a handful of interviews, then cut questions that do not separate candidates.
- Hold a calibration session where interviewers score the same recorded interview and compare.
Our guide to evaluating candidates consistently has worked examples of anchors and scorecards.
Types of structured interview questions
- Behavioural questions ask about past situations, on the principle that how someone handled something before indicates how they will handle it again. Score the actions the candidate personally took, not the team’s results.
- Situational questions set out a realistic scenario from the job and ask what the candidate would do. They suit candidates with less experience to draw on.
- Job-knowledge questions check specific knowledge the role depends on from day one.
- Work-sample tasks ask the candidate to do a small piece of the actual job, such as writing code, drafting a reply to a customer or prioritising a backlog, and to talk through their reasoning.
An AI interviewer is, by design, a structured interviewer. It asks every candidate about the same criteria, adapts its follow-ups to their answers, and scores against the rubric your team set. If that is the approach you want at the screening stage, see how a Vriti AI Interview runs.