A candidate can be highly convincing in an interview while still lacking the working styles required for long-term success in the role. This is why employers should combine tests with structured interviews when important hiring decisions are being made. The approach reduces reliance on gut feeling, makes candidate selection more comparable and provides a stronger basis for assessing the actual fit between the individual, the job requirements and the working environment.

For HR managers, recruiters and hiring managers, this is not about replacing human judgement. It is about using judgement where it adds the most value: interpreting results in relation to a clearly defined role, the candidate’s experience and the organisation’s specific circumstances.

Why interviews alone are rarely enough

Interviews are valuable. They can provide insight into a candidate’s interest in the role, specific experience, communication style and expectations of collaboration. The problem arises when the interview becomes the only or dominant basis for the hiring decision.

An unstructured interview can easily be influenced by first impressions, similarities between the candidate and interviewer, and how well the candidate communicates during a limited period of time. Experienced managers may recognise this situation: two candidates provide different examples, are asked different follow-up questions and are then assessed against a partly unspoken idea of what the role requires. This makes comparison uncertain, even when the interview is conducted with the best intentions.

Validated psychometric tests provide a different type of information. Personality assessments can highlight stable work preferences and behaviours, while ability and skills tests can provide indications of areas such as analytical ability, verbal comprehension or the capacity to process complex information. No single measurement provides the complete answer. Combined with a structured interview, however, the assessment becomes both broader and more relevant.

Start with a job analysis, not the test

The most common source of error is not that an organisation uses tests, but that it has not first defined what the role actually requires. A test result is never inherently good or bad. The same profile may be a strength in a fast-paced sales role involving constantly changing customer conversations, but less suitable for a role requiring long-term attention to detail and consistent adherence to procedures.

A job analysis should translate the organisation’s needs into assessable requirements. For a site manager, these might include prioritising under pressure, following up on results, making decisions and building trust within the organisation. For an HR strategist, the requirements may instead focus on analytical ability, integrity, collaboration and the ability to drive change across multiple stakeholders.

Distinguish between requirements that are essential from the outset and those that can be developed. It is also important to determine the level actually required. A candidate having strong numerical ability does not automatically mean that the highest possible test score is relevant to the role. Setting unnecessarily high requirements narrows the candidate pool without necessarily improving job performance.

Once the job analysis is complete, it becomes possible to select the right assessment tools, formulate relevant interview questions and determine an appropriate weighting between the different elements of the assessment.

How to combine tests with structured interviews

A well-designed process recognises that tests and interviews serve different purposes. Tests identify patterns and hypotheses. The interview explores how these patterns have been expressed in working life and the type of environment in which the candidate performs best.

If a candidate’s results indicate a strong tendency to make quick decisions, for example, the interviewer can ask for specific situations in which the candidate had to balance speed against quality. The question is not whether the test result is “correct”. The question is how the candidate acted, what the outcome was and which circumstances influenced the behaviour.

Structure means that all candidates are assessed against the same relevant criteria. It does not mean that the conversation has to be rigid. Interviewers can ask follow-up questions, but the core questions and assessment scale should remain the same. This makes it easier to distinguish a well-told story from demonstrated evidence of competence.

A good structured interview normally includes four elements:

• questions linked to the competencies and working styles identified in the job analysis,
• behavioural follow-up questions covering the situation, actions and results,
• predefined assessment anchors describing what low, good and high levels look like,
• documentation of observations before interviewers discuss their overall assessment.

Ideally, test results should be used after an initial selection based on essential requirements, or as part of a clearly communicated process. Candidates should understand the purpose, how their information will be handled and that the assessment concerns their fit with the role – not a judgement of their value as a person.

Interpret patterns, not individual scales

A common mistake is to read test results as a ranking in which higher is always better. In practice, results need to be interpreted as combinations. A candidate with high social energy, strong results orientation and a rapid decision-making style may be well suited to a commercially driven role. The same combination may require additional support in a role where accurate documentation, risk assessment and consistent administrative follow-up are essential.

The opposite is also true. A low or moderate score on an individual dimension does not automatically represent a risk. The candidate may have developed effective strategies, gained experience in an environment that compensates for a weaker preference, or be an excellent fit when the other requirements are taken into account.

This is where qualified interpretation of results makes a difference. JobMatch Talent can be used with comparison profiles based on the actual requirements of the role, helping organisations maintain a focus on relevant job fit rather than generic ideal profiles. A certified user can also interpret the results independently and apply them consistently across multiple recruitment and development processes.

When tests and interviews point in different directions

Conflicting signals are not a problem to be hidden. They are often the most valuable part of the process. If test data indicates that a candidate prefers clarity and predictability, but the interview demonstrates success in fast-moving and ambiguous situations, the context needs to be understood.

Perhaps the candidate had a clear mandate, an experienced manager who established priorities or a team that handled ongoing replanning. Perhaps the candidate has developed effective ways of managing a less natural preference. Or the particular experience may have been an exception rather than a recurring pattern.

Avoid two extremes: dismissing the test because the candidate made a good impression, or dismissing the candidate’s experience because an individual test result raises questions. Instead, use the discrepancy to explore further. Ask for several examples, check references using specific questions and assess which risk is actually relevant to the particular role.

Ensure quality, fairness and business value

For the process to be defensible, both the tests and the interview need to be of high quality. Choose assessment tools with documented validity and reliability, and check that the provider is evaluated according to established quality principles. Independent assessment, for example according to EFPA’s test review model and DNV’s quality assurance processes, provides valuable support when an organisation needs to evaluate the quality and usefulness of a test.

Fairness also depends on how the process is conducted. Give candidates the same information, compare results against the same role requirements and do not allow irrelevant factors to influence the assessment. Adjustments may be required for disabilities or language-related circumstances, but these should be handled consistently while maintaining focus on the competencies genuinely required for the role.

Document the basis for the decision. Record which requirements carried the greatest weight, what the test indicated, which behavioural examples emerged during the interview and how any potential risks were evaluated. This not only improves transparency. It also makes it possible to follow up on whether the selection method predicts performance, job satisfaction and retention within the organisation.

Make the results useful after recruitment

A well-conducted assessment should not end when the employment contract is signed. Test and interview data can provide managers with a stronger basis for onboarding, feedback and development. If a new employee prefers clear frameworks but the role requires independent prioritisation, for example, the manager can plan more frequent follow-ups initially and gradually increase the employee’s autonomy.

Naturally, this requires the information to be used responsibly and in accordance with the purpose communicated to the candidate. Use the results to create the right conditions for performance, not to lock people into simplified categories.

The next time a recruitment decision feels difficult, do not simply ask, “Who made the best impression?” Instead, ask what evidence you have that the person can succeed in this particular role – and what information you still need to make a well-founded decision.