The Theory Behind Behavioural Interviewing
The foundational assumption of behavioural interviewing is straightforward: what someone has actually done in a past role tells you more about what they will do in your role than what they say they would do in a hypothetical. Hypothetical questions ('What would you do if…') are easy to answer well regardless of real experience. Behavioural questions ('Tell me about a time when you…') require the candidate to recall and describe a specific situation — which is much harder to fabricate convincingly.
This approach draws on applied psychology research showing that past behaviour in similar circumstances is a better predictor of future behaviour than self-reported intentions or trait assessments alone.
How Behavioural Interviews Work
Questions are framed to elicit a specific past example: 'Describe a time when you had to deliver difficult feedback to a colleague' or 'Tell me about a project where things didn't go to plan.' The interviewer listens for a complete, specific account — a real situation, the candidate's personal role, what they actually did, and the concrete result.
Most behavioural interviews are structured using the STAR framework (Situation, Task, Action, Result) as an evaluation guide. Strong responses describe a specific situation, explain the candidate's personal responsibility, detail the actions they took — not what 'the team' did — and describe a concrete, measurable outcome.
What to Listen For
Strong behavioural responses are specific, first-person, and concrete. They name real projects, real colleagues, real results. Weak responses are vague ('I tend to…'), hypothetical ('I would usually…'), or plural ('We decided to…' without clarifying the candidate's individual contribution).
Trained interviewers probe for specificity: 'What did you personally do in that situation?' or 'What was the outcome?' The quality of a behavioural interview is largely determined by the quality of follow-up questions.
Designing Good Behavioural Questions
Effective behavioural questions are grounded in the competencies the role requires. A question about handling conflict is irrelevant for a role that is largely independent; a question about stakeholder management is critical for a role that involves multiple teams. The competency framework — or, in Palantrix's case, the Team DNA Profile — should drive question selection.
Questions should be open enough to allow a variety of valid responses but specific enough to target the competency. 'Tell me about yourself' is not a behavioural question. 'Describe a time when you had to influence a decision without having direct authority' is.
Limitations of Behavioural Interviewing
Behavioural interviews are effective at assessing how candidates have handled specific situations in the past. They are less effective for candidates with limited work experience (graduates, career changers) who may lack relevant examples, and for genuinely novel situations where no direct past experience applies.
They also require skilled, trained interviewers to probe effectively. A behavioural question asked without any follow-up is significantly less informative than one explored thoroughly.
How Palantrix uses behavioural interviewing
Palantrix's Structured Interview format is built around behavioural questions calibrated to your Team DNA Profile. Questions are designed to surface specific past behaviour relevant to the traits your team has identified as predictive for the role. AI analysis focuses on transcript content — the substance of what candidates say — rather than delivery, accent, or presentation style.
How Team DNA Profiling works →Frequently Asked Questions
What is the difference between a behavioural interview and a competency-based interview?
Behavioural and competency-based interviews are closely related — both use structured questions to elicit evidence from past experience. 'Competency-based' typically refers to a framework where questions map explicitly to named competencies; 'behavioural' is a broader term describing the question format. In practice, most competency-based interviews use behavioural questions.
How should candidates prepare for a behavioural interview?
Candidates should prepare specific examples from their experience that demonstrate relevant competencies — ideally 6–10 strong examples they can adapt to different questions. Using the STAR framework to structure their answers helps ensure responses are complete and easy to evaluate.
How many behavioural questions should an interview include?
Most behavioural interviews contain 4–7 questions. Fewer than 4 provides insufficient evidence; more than 7 leads to repetition and fatigue. Each question should target a distinct competency.
Are behavioural interviews suitable for graduate candidates?
Yes, with adaptation. Graduates may draw examples from academic projects, part-time work, volunteering, or extracurricular activities. Interviewers should make explicit that examples from any context — not just full-time employment — are welcome.
Can behavioural interview questions be used in video interview formats?
Yes — and this is one of the strengths of structured one-way video interviews. Behavioural questions work well in async formats because they require a complete narrative response, not a conversational exchange. Candidates can structure their thinking before recording; evaluators can score each response against a consistent rubric.