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Types of personality tests used in hiring, compared
There is no single best personality test for hiring, because these tools were built for different jobs. The trouble tends to start when a tool made for self-reflection gets pointed at a stack of candidates. What follows is a plain account of what each kind is good for, and which one belongs in a hiring decision.
The short version
- Four families turn up most: type quizzes (MBTI, DISC), trait instruments (the Big Five), situational or behaviour-based assessments, and skills or cognitive tests.
- Type quizzes are good for self-awareness and team language, and weak as a hiring filter. Their makers often say so themselves.
- For a hiring read on work style, a behaviour-based assessment grounded in validated traits is the better fit, used as one input.
- Whatever you choose, no single test should be the gate. Pair it with a structured interview and a real look at the work.
There is a reason the four-letter type feels so accurate. In the late 1940s a psychologist named Bertram Forer handed a class of students what he told each of them was a personality profile built from a test they had just taken. They rated it as a nearly perfect description of themselves. Forer had given every student the identical paragraph, assembled from lines in a newsstand astrology book. The finding has held up for seventy years: a description that is vague enough and flattering enough will feel personal to almost anyone. It is also why those quizzes, for all their charm, tell you so little about how a particular person will handle a particular job.
So what is the best personality test for hiring? The honest answer is that it is slightly the wrong question, because the main types of personality tests for hiring were built for different jobs. A test that is excellent for a team offsite can be a poor and risky choice as a screen, and the reverse holds as well. The more useful question is which family of test fits the job of hiring, and to answer it you have to know what each family was actually made for.
A quick word before the comparison
People reach for personality tests for three different reasons. One is self-awareness, where the point is to help a person understand their own habits. Another is team-building, where a shared vocabulary helps a group work together. The third is hiring, which is the highest-stakes of the three and the most regulated, and also the one most quizzes were never designed for. Keep that distinction in mind as you read, because a tool can be genuinely good at the first two jobs and quietly wrong for the third.
The main types of personality tests, compared
A plain map of the four families: what each one measures, where it does well, and how it holds up for a hiring decision.
| Type of test | What it measures | Best used for | For a hiring decision |
|---|---|---|---|
| Type quizzes (MBTI, DISC, colour systems) | Sorts you into a type or style category | Self-awareness, shared team language | Weak. Not built to predict, and easy to answer the way you wish |
| Trait instruments (Big Five / Five-Factor) | Rates you along continuous dimensions | Describing how someone tends to work | Solid foundation. The most research-backed family |
| Situational / behaviour-based (work-style reads) | How you handle realistic work situations | A job-relevant read that resists gaming | Good fit, as one input among several |
| Skills / cognitive tests | Ability or job knowledge | Whether someone can do the task | Useful, and a different question from work style |
A closer look at each
Type quizzes. The Myers-Briggs Type Indicator, DISC, and the various colour and animal systems are the ones most people know by name. They are good company at a workshop and genuinely useful for helping a team understand one another, which is how they spread. As a hiring screen they are weak, and the reason is built into them. They sort people into a small set of categories, which places very different people in the same bucket and very similar people in different ones, and the agreeable, one-size descriptions that make them feel so accurate are the same ones that carry little predictive weight. They were not designed to forecast who will do well in a role, and a self-report quiz is easy to steer once a candidate guesses what you are hoping to see. The publisher of the MBTI says as much directly, advising against its use in hiring or selection. Their proper worth is self-knowledge, and that is a real thing to offer.
Trait instruments. The Big Five, also called the Five-Factor Model, is the framework researchers trust most. In place of a type, it locates you along continuous dimensions, which is a truer picture of how people actually vary. It is the backbone of serious work-style measurement, and a well-built hiring assessment is usually standing on it whether or not it says so.
Situational and behaviour-based assessments. These ask what you would do in a realistic work situation, in place of asking you to rate yourself. That shift matters, because there is no obvious right answer to perform, which makes them harder to game than a questionnaire and closer to the work you are actually hiring for. A work-style hiring assessment lives in this family, often reading the trait dimensions through behaviour rather than through self-rating.
Skills and cognitive tests. These measure ability or knowledge, the question of whether a person can do the task at all. They are necessary, and they answer a different question from work style. The strongest hiring processes pair a skills check with a read on how the person tends to work, since one tells you whether they can and the other tells you how.
So which should you use for hiring?
For the question every hire really turns on, which is how this person will work once they are in the role, the best fit is a behaviour-based assessment grounded in validated traits, read as one input next to a skills check and a structured interview. It is job-relevant and harder to fake than a self-rating, and it hands you a description to work from in the conversation that follows. The structured interview earns its place here too, since a consistent set of questions asked of every candidate reads performance more reliably than a conversation that wanders where rapport takes it.
Example
Nadia runs a small marketing agency and started screening applicants with a sixteen-type quiz, cutting anyone who came back as the "wrong" type. She lost a copywriter who would have been excellent, and hired two who matched the type and missed on the work. She now uses a short work-style read as one input, together with the same set of interview questions for everyone, and her last three hires have settled in well. The quiz itself was harmless enough in its proper use, helping a team talk about how its members differ. The error was asking it to screen people, a job it was never designed to do.
That behaviour-based, trait-grounded family is the one Keelworth belongs to. A candidate works through a set of real work situations, the answers are scored the same way every time, and you receive a comprehensive read on how that person tends to work, handed to you as one input. You can see a full sample report, or read how the measurement holds together. For more on using any assessment without overreaching, the piece on whether personality tests work for hiring covers the discipline of it.
The right family for the job
A behaviour-based read on a candidate's work style.
Run Keelworth on yourself or a colleague and see what a work-style read looks like.
Common questions
What is the best personality test for hiring?
There is no single best one. For a read on how a candidate tends to work, a behaviour-based assessment grounded in validated traits fits the job, used as one input. Pair it with a skills check and a structured interview, and keep the decision yours.
What personality tests do employers use for hiring?
DISC and the MBTI are common for team work and self-awareness. For hiring reads, employers lean on Big Five-based and situational, behaviour-based assessments, usually alongside skills or cognitive tests. The mix depends on the role.
Is the MBTI good for hiring?
It is good for self-awareness and for giving a team a shared language. Its own publisher advises against using it for selection, since it was not built to predict job performance and a self-report type is easy to steer.
What is the most accurate personality test?
Accuracy depends on what you are trying to read. For describing how someone tends to work, trait-based and behaviour-based measures hold up best, since they rest on continuous dimensions and on how a person handles real situations, rather than on a single type label.