Supporting the selection decision: from gut feeling to data

Why substantiate the selection decision?

Most selection decisions are made on a combination of CV, interview and gut feeling. That sometimes works, but it is not reproducible, not comparable and not defensible.

Substantiating does not mean replacing human judgment with data. It means supplementing human judgment with data. The hiring manager still decides, but the decision is based on more than an impression.

The business case is clear. A wrong hire costs 50% to 200% of the annual salary in direct and indirect costs. A better selection process reduces that risk. Schmidt & Hunter showed that the combination of cognitive tests and structured interviews reaches a predictive validity of .63, compared with much lower values for CV screening and unstructured interviews.

Four data sources, one competency profile

The strength lies in combining sources that each measure something different, but speak the same language.

• Structured interview: the interviewer scores how the candidate describes behavior in work situations. This measures self-reported behavior on behavioral indicators.
• Assessment: validated instruments measure aptitude (abilities, personality) and potential. This measures what someone can do and what gives someone energy.
• 360 feedback: colleagues and managers score how they experience someone's behavior. This is especially relevant for internal candidates or internal mobility.
• Skills validation: skills are validated by colleagues or through certifications. This measures what someone demonstrably masters.

Every source has blind spots. An interview measures what someone says, not what someone does. An assessment measures potential, not experience. Feedback measures perception, not intention. The combination compensates for the blind spots of each individual source.

Comparability: the same yardstick

Combining sources only works if they speak the same language. If the interview measures "collaboration" and the assessment measures "team orientation", the scores are not comparable.

The solution is a shared competency model. Each competency has behavioral indicators. The interview scores on those indicators. The assessment measures the same competencies. The feedback asks about the same behaviors.

Per competency, a profile then emerges. How does the candidate score from the interview (self-reported behavior), from the assessment (aptitude and potential), and from the feedback (experienced behavior)? Three perspectives on the same competency.

This is not theory. It works if the data model supports it. If all scores are linked to the same behavioral indicators, they are directly comparable in a talent matching profile.

From scores to matching

Talent matching compares what the job requires with what the candidate brings. In recruitment, that works on four dimensions.

• Aptitude: do the personality and cognitive level fit what the job requires? Data from the assessment.
• Behavior: does the candidate show the behavior the job requires? Data from interview and feedback.
• Culture: does the candidate fit the organizational culture? Data from culture measurement and assessment.
• Skills: does the candidate master the skills the job requires? Data from skills validation.

The matching score is not a final verdict. It is a summary that helps the hiring manager make an informed decision. The score shows where the candidate is strong and where the points of attention lie.

Comparing candidates

When multiple candidates have gone through the same steps, they are comparable on the same criteria. That makes the choice transparent.

Per competency, you can see how candidates score from different sources. Candidate A scores high on collaboration in the interview but average in the assessment. Candidate B scores average in the interview but high in the assessment. Those are different profiles with different implications.

The comparison is useful not only for the selection decision, but also for onboarding. The points of attention from the selection process can be used directly as development themes in the first months.

Defensibility and transparency

A well-founded selection decision is defensible. You can explain to stakeholders why you chose candidate A and not candidate B. That matters for internal mobility, for jobs with multiple stakeholders, and for diversity policy.

Transparency also works toward the candidate. With a rejection, you can give substantive feedback: "You scored strongly on analytical ability, but we were looking for more experience with stakeholder management." That is respectful and strengthens the employer brand.

For the organization, it also produces learning effects. If you track over time which profiles are successful in which jobs, you can continuously improve the selection process.