What Employers Should Ask Before Using a Personality Report in Hiring

Start with the job, not the report

The first question is not whether a report looks polished. It is whether the hiring team can name a job requirement that the report is meant to inform. A useful description might be that a customer-support role requires a person to handle several unresolved requests, explain limits clearly, and maintain accurate records. That description points toward observable work behavior. A label such as “ideal personality” does not.

Ask: Which tasks or outcomes does this report inform, and how would we observe them after hiring? Ask who completed the job analysis, when it was completed, and whether the role has changed since then. A job analysis is a structured account of the tasks, responsibilities, and competencies that matter in a role. It gives the assessment a target.

This matters because a trait can be relevant in one role and unnecessary in another. The U.S. Office of Personnel Management says personality measures are generally more useful when performance depends on interpersonal interaction or teamwork, and less useful for highly scripted jobs where personality has little room to affect performance. That is a narrower claim than saying a certain trait makes someone a good employee.

Clarify what the report actually measures

“Personality report” can describe very different products. One may summarize self-reported tendencies on several trait scales. Another may combine responses into a type label, recommend interview questions, or produce a fit score. The employer should request the instrument manual or technical documentation and ask for a plain-language map from item responses to scales, scores, bands, and recommendations.

The key distinction is between a measured tendency and an employment conclusion. A score on a scale may indicate how a person tends to describe themselves under the test instructions. It does not, by itself, show that the person will perform a particular task, collaborate in a particular team, or remain in a particular job. Ask whether the report presents raw scores, standardized scores, percentiles, bands, or facets, and what comparison group makes those numbers meaningful.

Also ask whether the instrument is designed for normal adult workplace assessment or for clinical use. OPM notes that tests designed to reveal psychiatric disorders can be medical examinations under the Americans with Disabilities Act and may be restricted before an offer of employment. A workplace report should not quietly turn questions about ordinary work preferences into a search for a diagnosis.

Demand validity evidence for this use

Validity is not a permanent badge attached to a test. It concerns whether the proposed interpretation and use of scores are supported for a particular purpose. Ask the provider: What evidence supports using this report to make hiring decisions for this job family? Does the evidence concern the same kind of work, similar applicants, and a comparable outcome? Who conducted the studies, how were job performance criteria defined, and what limitations were reported?

For a report intended to forecast later job performance, predictive validity evidence may be relevant. Predictive validity means scores collected before a decision are related to a later job outcome. OPM uses a customer-service example to explain why evidence must connect the personality score with subsequent performance, rather than with a vague impression of fit. Evidence from a different occupation or from self-rated success may not answer the employer’s question.

Ask what the report adds beyond structured interviews, work samples, job-knowledge tests, references, or other measures already in the process. Incremental validity means the additional information a tool contributes after other measures are considered. A report that merely repeats an interviewer’s first impression may add cost and confidence without adding useful evidence.

Check reliability and the size of the uncertainty

Reliability asks how consistently an assessment produces scores when conditions and the measured attribute are similar. It is not the same as validity, and it is not proof that a report is accurate about a person. Ask which reliability evidence is available, how it was calculated, and whether it applies to the intended population and scales. A single overall coefficient may hide weak or unstable facets.

The employer should also ask how measurement error is handled. If a person’s score is close to a cutoff, a small amount of error may make a categorical decision unstable. A responsible report should explain whether it uses bands, confidence intervals, or another way of showing that an observed score is an estimate rather than an exact reading of a fixed inner quality.

OPM describes reliability as a limit on validity: an assessment that is not reasonably consistent cannot be expected to make useful predictions about job performance. In practice, that means a hiring team should not treat a narrow score difference as a meaningful ranking unless the documentation supports that interpretation. The right response to uncertainty may be to gather more job-relevant evidence, not to retest until the preferred result appears.

Look for fairness, accessibility, and adverse impact

A report can be consistent and still create an unfair selection process. Ask for selection rates, score patterns, and prediction error across relevant groups, using data appropriate to the employer’s jurisdiction and privacy duties. Ask how the provider studied language, culture, disability access, and the conditions in which applicants complete the assessment. Do not accept a general statement that the tool is “objective” as a substitute for evidence.

Adverse impact means a selection procedure produces substantially different outcomes for groups, even when the procedure does not openly use a protected characteristic. The EEOC explains that when an employment test has disparate impact, it must be professionally validated as predictive of, or significantly correlated with, important parts of the job. It also notes that a less discriminatory alternative can still matter. This is why a low group difference in one study does not end the employer’s responsibility to monitor its own process.

Ask what accommodations are available, how applicants request them, and whether an accommodation changes the construct being measured or only removes an irrelevant barrier. A report should not infer a health condition from personality answers, speech, facial movement, or communication style. The hiring team should offer a clear route for an applicant to request an adjustment without having to disclose more medical information than necessary.

Protect the applicant’s privacy and dignity

Before collecting responses, explain what is being assessed, why it is relevant, who will see the report, how long the data will be retained, and whether the provider may reuse it for product development or other purposes. Ask whether the employer receives item-level answers, only a summary, or a score sent through a third party. Data minimization is practical here: collect and share what the hiring decision needs, not every sensitive response the system can produce.

Review the items for needless intrusion. OPM notes that some personality tests contain questions that do not appear job-related or seem to reveal private thoughts and feelings. It also notes that transparent items can invite applicants to distort their answers. An employer should ask whether the process encourages honest responding and whether applicants receive a meaningful explanation of the assessment rather than being told that a hidden algorithm knows their “true self.”

If the report includes medical or disability-related information, the legal and privacy analysis changes. U.S. EEOC guidance says employers may not ask applicants disability-related questions or require a medical examination before an offer, and that medical information must be kept confidential. Employers elsewhere should apply the equivalent local rules with qualified legal advice.

Decide how much weight the report deserves

The safest hiring design treats a personality report as one source of information with a defined role. It should not silently become a veto, a tie-breaker that no one can explain, or a way to justify a decision already made. Write the rule before reviewing individual results: for example, the report may prompt a standardized follow-up question about a job requirement, while a work sample and structured interview provide direct evidence of performance.

Compare two processes. In the first, a manager sees a red “low fit” flag and rejects the applicant. No one can say which behavior the flag represents, how close the score was to a boundary, or whether the tool predicts success in this job. In the second, the employer defines a role-specific competency, checks the report’s validation evidence, uses the result only to select a consistent follow-up question, and records the final decision against the same job criteria used for other applicants. The second process makes the report answerable to the job rather than the other way around.

If scoring is automated, ask for documentation of the scoring process, version changes, human oversight, and audit access. SIOP’s recommendations say technology-based assessments used for hiring should meet the same standards as traditional tests: they should produce accurate, consistent, fair scores and have documented development and scoring decisions. Automation changes the need for scrutiny; it does not remove it.

Use the report only after the questions have answers

An employer is ready to consider a personality report when it can show a chain of reasoning: the job requires a defined behavior; the report measures a relevant construct; evidence supports the intended use with a comparable population and outcome; scores are sufficiently consistent; uncertainty is visible; the process is accessible and monitored for unfair effects; and applicants’ information is handled appropriately.

If one link is missing, narrow the use or pause it. A report may be suitable for voluntary development after hiring but not for screening applicants. It may help a trained interviewer ask the same job-related question of every candidate but not justify a pass-or-fail cutoff. It may be useful for self-reflection but not for deciding who is “management material.” Intended use is part of the evidence question.

Do not let a vendor’s popularity, attractive dashboard, or familiar trait names do the work of validation. OPM’s assessment guidance recommends an up-to-date job analysis, strong validity evidence, applicant information about what the tool assesses, and clear responsibilities for everyone administering or interpreting it. Those are ordinary governance steps, but they protect the central distinction: a report can inform a decision without becoming a verdict about a person.

Before approving a personality report, write down the answers to these questions: What specific job behavior or outcome is relevant, and where is that requirement documented? What does each reported scale measure, and what do the score, percentile, band, or facet mean? What reliability evidence and measurement-error information apply to this use? What validation evidence connects the scores with this job or a genuinely comparable one? What does the report add beyond the other selection methods? Have accessibility, language, cultural context, subgroup outcomes, and accommodation procedures been checked? Could any item reveal medical or disability information, and who can access the data? What exact role will the report play, who can override it, and how will the employer audit outcomes over time?

Then make one of three decisions. Proceed when the evidence and safeguards fit the intended hiring use. Narrow the role when the report is more defensible for structured follow-up or development than for exclusion. Stop when the provider cannot explain what is measured, the evidence does not match the job, or the process depends on opaque labels and unsupported cutoffs.

For further assessment-literacy guidance, use the live topics library to examine norms, validity, reliability, privacy, and responsible report interpretation before choosing a tool. The next observable step is simple: ask the vendor for the technical documentation, ask the hiring team to define the job behavior, and compare the proposed report with a direct work sample. If those three conversations do not converge, do not use the report to decide who gets hired.