Structured Interview: Definition, Method & Examples

Structured Interview: Definition

A structured interview is a selection interview in which every candidate answers the same questions in the same order. The questions are derived in advance from the requirement profile, and answers are scored against predefined behavioral anchors – ideally by several interviewers rating independently.

That sets it apart from the free-flowing conversation, which turns out differently every time depending on mood, rapport, and where the discussion happens to drift. Structure makes answers comparable. And comparability is precisely why structured interviews rank among the most accurate selection methods research has ever examined.

Why structured interviews predict better

The interview is the most widely used selection method there is. Which makes it all the more striking how much its quality depends on how it is conducted.

The most recent large-scale reassessment of selection research by Sackett and colleagues (2022) is unambiguous: structured interviews reach a validity of around .42, one of the highest values of any method examined, while unstructured interviews trail far behind at roughly .19. The classic meta-analysis by Schmidt and Hunter (1998) showed the same pattern decades earlier: structure substantially improves the prediction of job performance.

The reason is unspectacular, and that is exactly what makes it useful. Structured interviews do not work because interviewers suddenly become better judges of character. They work because comparability emerges. When all candidates answer the same questions and are rated against the same standards, differences in scores reflect actual differences between people – not differences in how the conversation went. In the language of test quality criteria: structure first raises objectivity and reliability, and only on that foundation can an interview be valid at all.

The building blocks of structure

Structure is not all-or-nothing. In their widely cited review, Campion, Palmer, and Campion (1997) cataloged 15 components that can add structure to an interview. The most important ones for practice:

• Questions based on a job analysis: Every question tests a criterion that is demonstrably relevant to the role – not whatever happens to occur to the interviewer.
• The same questions for everyone: Each candidate receives the identical set of questions in the identical order.
• No ad hoc follow-ups: Spontaneous probing opens the door to unequal conversations. Where follow-ups are needed, they are defined in advance and used the same way with everyone.
• Behavioral anchors for every question: What counts as a weak, average, or strong answer is fixed before the first interview takes place.
• Independent ratings before any discussion: Each rater scores alone first. Discussion comes afterwards – otherwise the most senior voice in the room shapes the outcome.
• Multiple interviewers: Two or more perspectives balance out individual rating habits.
• Documentation: Answers and ratings are recorded in writing. That imposes discipline during the interview and makes decisions traceable later.

No organization has to introduce all 15 components at once. Every single element adds a measure of comparability. Simply asking all candidates the same questions and taking notes is already a measurable step forward.

Behavioral anchors: what “good” actually means

The component with the greatest effect is also the one most often skipped: behavioral anchors. “Communication skills: 3 out of 5” is not a rating, it is a gut feeling with a number attached. What separates a 3 from a 4 is left to each rater’s private judgment – and with that, comparability is gone again.

A behavioral anchor instead describes what a given level looks like in an answer. For the question “Tell me about a conflict in your team and how you handled it,” an anchored scale might read:

• Level 1: Describes the conflict but no action of their own. The resolution came from others or never happened.
• Level 3: Describes concrete steps they took to resolve it, but the outcome stays vague or was never checked.
• Level 5: Describes their own steps, names the concrete outcome, and draws a transferable lesson from it.

With anchors like these, two raters score the same answer alike far more often. And when they diverge, they can talk about what they heard – instead of who got the better impression.

Two question types: behavioral and situational

Structured interviews mostly rely on two question types, both well supported by evidence.

Behavioral questions

They ask about actual past behavior, on the logic that what someone has done tells you more than what someone says about themselves. For example: “Tell me about a time you could not meet a deadline you had committed to. What did you do?” The STAR method has become the standard for evaluating the answer: it should reveal the Situation, the Task, the candidate’s own Action, and the Result. If one element is missing, that is what the predefined follow-up question is for.

Situational questions

They present a hypothetical but realistic scenario containing a genuine trade-off: “A key customer reports an urgent problem on Friday afternoon, and your team has already left for the weekend. What do you do?” What gets rated is how the person weighs priorities. Situational questions have a practical advantage: they also work for graduates and career changers who cannot yet draw on matching experience.

Many interview guides combine both types. What matters is less the type than the origin of the question: it has to test a criterion from the job analysis.

Structure as a safeguard against bias

Free-flowing interviews are vulnerable to unconscious bias: the first impression colors the rest of the hour, similarity gets mistaken for suitability, one strong answer outshines three weak ones. The uncomfortable part: knowing about these distortions barely protects against them. Someone who can list every bias by name will still judge in a biased way during the conversation, because the effects operate below awareness.

Structure therefore does not target awareness; it targets the procedure. Identical questions deny the first impression the chance to steer the conversation. Behavioral anchors force raters to score the answer rather than the person. Independent ratings keep the panel from infecting each other. Documentation exposes any judgment that comes without evidence. No single component eliminates bias entirely – together, they dramatically shrink the space in which bias can operate.

Limits of structured interviews

As strong as the evidence is, a structured interview does not run itself, and it cannot do everything.

• It takes preparation. Job analysis, question development, anchored scales, and interviewer training all take time before the first conversation happens. This effort occurs once per role and pays off across many interviews – but it does occur.
• It can feel stiff. Some candidates and some hiring managers experience the fixed procedure as impersonal. Transparency helps: explaining that everyone gets the same questions so the decision is fair usually earns understanding. Room for questions and genuine getting-to-know can be deliberately built in, for instance at the end of the interview.
• It does not replace a job analysis. Structure makes the measurement reliable; it does not make the criteria right. A perfectly structured interview built on the wrong criteria measures only one thing with great precision: the wrong thing.
• It does not measure everything. Cognitive abilities, personality traits, and professional interests are captured more precisely by standardized methods of aptitude diagnostics than by conversation. The interview plays to its strength where concrete behavior, motivation, and the mutual impression are concerned.

Structured interviews and Aivy

Aivy comes in before the interview. Its game-based assessments provide an objective pre-selection built on the same principles that make the structured interview strong: identical tasks, identical standards, documented results. The strengths profile from the assessment also gives interviewers a concrete starting point for the conversation – for instance, to probe exactly where the profile and the requirement profile diverge. The interview itself stays where it belongs: with people who want to get to know each other.

Frequently asked questions

What is the difference between a structured and an unstructured interview?

In a structured interview, the questions, their order, and the rating standards are fixed before the conversation and apply equally to all candidates. An unstructured interview unfolds freely – which makes impressions hard to compare and lowers predictive power considerably.

How many questions does a structured interview need?

There is no fixed number. As a rule of thumb, plan at least one, better two questions per requirement criterion. With five to seven criteria and 60 minutes of interview time, eight to twelve main questions are realistic.

Am I allowed to ask follow-up questions in a structured interview?

Yes, but in a controlled way. Follow-ups are defined in advance – for example, “What exactly was your part in that?” – and used with all candidates under the same rules. Spontaneous, person-dependent probing erodes comparability.

What is the STAR method?

STAR stands for Situation, Task, Action, and Result. The method helps capture and rate behavioral answers completely: a good answer describes the starting situation, the candidate’s own role, the concrete action taken, and the outcome.

Does a structured interview replace an aptitude test?

No, the two complement each other. Standardized tests measure abilities and personality traits more precisely, while the structured interview examines concrete behavior, motivation, and fit in direct interaction. The best prediction comes from combining several methods.

Sources

• Sackett, P. R., Zhang, C., Berry, C. M. & Lievens, F. (2022). Revisiting meta-analytic estimates of validity in personnel selection: Addressing systematic overcorrection for restriction of range. Journal of Applied Psychology, 107(11), 2040–2068.
• Schmidt, F. L. & Hunter, J. E. (1998). The validity and utility of selection methods in personnel psychology: Practical and theoretical implications of 85 years of research findings. Psychological Bulletin, 124(2), 262–274.
• Campion, M. A., Palmer, D. K. & Campion, J. E. (1997). A review of structure in the selection interview. Personnel Psychology, 50(3), 655–702.
• Schuler, H. (Ed.) (2014). Lehrbuch der Personalpsychologie (3rd ed.). Hogrefe.
• Kanning, U. P. (2015). Personalauswahl zwischen Anspruch und Wirklichkeit. Springer.
• DIN 33430:2016. Requirements for proficiency assessment procedures and their implementation. Beuth.