Ryan Took the MBTI Personality Assessment: What His Result Meant

13 min read

What Happened When Ryan Took the MBTI Personality Assessment

Ryan is 34 and has worked in operations for ten years at a regional food distributor. He builds the night shift schedule, fixes what breaks, and is good at it. Last spring his company put him through a leadership course, and the first assignment was a Myers-Briggs Type Indicator questionnaire. (Ryan is a composite rather than a single person, pieced together from stories people share after taking it. Every step below is how the official version works.)

The test arrived as a link from a certified practitioner the course had hired. The questions were short and came as either-or choices. Would he rather be seen as practical or as clever? At a party, does he talk with lots of people or with a few he knows? Does he like a set plan, or room to change it as he goes? Nothing was right or wrong, nobody was timing him, and most questions took him a few seconds.

Then came the step that free versions skip. A week later, the practitioner walked the group through their results and asked each person whether the type on the page sounded like them. The official process calls this confirming a best-fit type: the score proposes, and you decide. The four letters are only a first guess, and the official process wants you to check them.

Ryan Took the MBTI Personality Assessment Officially, Then Free

The standard official MBTI personality assessment, called Step I, has 93 questions, and most people finish it in under half an hour. It is usually bought through a practitioner, a workplace, or a school, and it comes with that feedback conversation.

A free type test online borrows the four-letter format, but it is a different test. Each site writes its own questions, often statements you score from agree to disagree, and uses its own scoring. Some add a fifth letter: 16Personalities tacks on -A or -T, which roughly describes how calm or self-doubting you tend to be, and it has no place in the original model.

Free tests are fine for curiosity. They cost nothing and take ten or fifteen minutes. But when two sites disagree, you are often comparing two different questionnaires, and nobody sits with you afterward to sort out which letters fit. That is part of how Ryan ended up with two answers.

Reading Your MBTI Personality Assessment Results, and the Letter That Was a Coin Toss

Your result comes back as four letters, each picked from a pair. Each pair is a preference in the way being right- or left-handed is a preference. You can use both hands. You just reach for one first.

E and I: Extraversion, Introversion

Do you sort out your ideas by talking, or by going quiet first? Ryan came out I.

S and N: Sensing, Intuition

Do you lean on concrete details and what has happened, or on hunches about what could happen? Ryan came out S on the official form and N on the free one.

T and F: Thinking, Feeling

When you choose, do consistency and cause and effect come first, or who it affects and what they care about? Ryan came out T.

J and P: Judging, Perceiving

Should the plan be settled early, or would you rather keep options loose until the last minute? Ryan came out J.

So ISTJ, in plain words, describes someone who thinks before speaking, trusts what has worked before, decides by the rules, and likes a plan. That is a fair sketch of a good operations manager, which helps explain why Ryan believed it. A type shows your lean, and nothing about how skilled you are.

When One Letter Lands Close to the Middle

The official report also gives each pair a preference clarity label: slight, moderate, clear, or very clear. Many free tests show a percentage instead. This label is the most important line in the report, and most people skim past it.

Ryan's S was slight. He had answered close to evenly between Sensing and Intuition, and the scoring had to round him to one side. A slight label means the letter could go either way on another day, and it was exactly the letter that flipped when he tried the free version at home. A slight score on one letter means you sit near both sides, so read both type descriptions.

A good rule: build on your clear letters and hold the slight ones loosely. For Ryan, I, T and J were solid, and S versus N was a coin toss. If you want the deeper theory, the model also ranks a set of mental habits behind the letters, and our cognitive functions explainer covers each one.

All 16 Types in One Line Each

You get 16 types because four pairs of two choices make 16 combinations. Practitioners often group them by two shared letters, which is how the table below is arranged. Each line is a plain sketch, a starting point and nothing more.

How Accurate the MBTI Personality Assessment Is on a Retake

The flip Ryan saw is common. Researchers have retested people on the MBTI for decades, and the weak spot shows up in study after study: retake it, and the odds are decent you will get a different type.

In 1991, researchers working for the National Research Council went through the retest studies for a report on human performance. Depending on the study, the share who kept their type ranged from 24 to 61 percent, and the middle study landed at 40 percent (In the Mind's Eye, chapter 5). In the typical retest study, only about four in ten people kept the same four letters. Adam Grant, an organizational psychologist at Wharton, summed up the same research more plainly: retake it five weeks on, and the odds of getting a different category are about 50 percent (writing in Psychology Today).

Why does it move so much? Two reasons. First, the scoring turns a range into a switch. Most of us score near the center on most of these scales, the way most people are close to average height. Put a cut line at the center, and a bad night's sleep or a reworded question pushes you over it and swaps a whole letter.

Second, every answer is you describing yourself, and that changes with the week. The first time, he was in a stressful course week, thinking about the night shift. He took the free one on a quiet Sunday, thinking about the strategy job he wanted. Both answers were honest. They were answers to slightly different questions.

Where the Science Behind the Types Stands

Isabel Briggs Myers wrote the first version during the 1940s, with help from her mother, Katharine Briggs. Both drew on Carl Jung's book on personality types. Neither had formal training in psychology. In 1993, David Pittenger, a psychologist, went through the published research and concluded the evidence was too weak to back up the test's main claims about how useful it is (Review of Educational Research).

Calling it pseudoscience goes too far, though. Some of its scales, especially introversion and extraversion, overlap with traits that hold up well in research. What fails is the idea that people fall cleanly into 16 separate boxes. Research instruments that use the Big Five report each trait as a score from low to high with no cut line, which is why psychologists prefer them. Our guide to Big Five scores shows what those scores look like next to a type.

Using the MBTI Personality Assessment for a Career Choice

Going in, he half hoped it would settle one question for him. The strategy job meant more analysis, more slide decks, and fewer fires to put out at 2 a.m. His free result said INTJ, a type that career sites love to pair with strategy. His official result said ISTJ, a type they pair with operations. For his job decision, the letters came out a tie.

The test's own publisher would tell him not to use it that way. The Myers-Briggs Company has said the questionnaire was never meant to predict anything, and that employers should not hire with it and people should not let it make life decisions for them (as quoted in Wikipedia's MBTI entry). Even the MBTI's own publisher warns against letting it make your career choice.

The National Research Council reached a similar view about career work in particular. Its 1991 review said the research was too thin, and too poorly designed, to support career counselors relying on it. So far the evidence says the MBTI opens a good conversation about careers and predicts very little about them.

Why Big Employers Still Hand It Out

About 80 percent of the Fortune 500 and 89 of the Fortune 100 use it with their staff, by one widely repeated count (CNBC, citing Business Insider). That is a reported tally, not an independent audit. With evidence this thin, why? Mostly because companies use it for something other than predicting careers: team workshops.

It works well in that room. Everyone gets a result, nobody fails, it is quick to explain, and it gives a team shared words for everyday friction, like the planner who wants a decision on Monday and the colleague who wants to keep options open until Thursday. That use is reasonable. The jump from "useful conversation starter" to "picks your next job" is the part the research does not back.

Type and Job Performance: No Proven Link

Grant points out that different jobs do attract different types, but there is "no convincing body of evidence that types affect job performance or team effectiveness." Put plainly, knowing that plenty of accountants are ISTJs tells you who tends to go into accounting. You learn little from it about your own odds of doing well there, or how you would feel about the work three years in.

Type shows which jobs people drift toward, not which jobs they do well in or want to keep. For Ryan, that meant the type-to-job lists pointing him at operations or at strategy were mostly reporting what other people with his letters had chosen.

What to Do After the MBTI Personality Assessment: Ryan's Four Steps

Here is what he did once Ryan took the MBTI personality assessment the second time, step by step. The steps work for any type.

1. Keep the clear letters, question the slight one. Ryan kept I, T and J. They matched years of feedback: he likes written plans, decides from data, and needs quiet time after long meetings. The S or N question stayed open.
2. Check the letters against your last month. He listed the tasks from the past four weeks he would happily do more of and the ones he kept putting off. Rebuilding the delivery route model went on the first list. Settling a driver dispute at 2 a.m. went on the second. That list told him more than either type page.
3. Find out what the new job is like day to day. He spent an hour with someone on the strategy team and asked her to walk him through her calendar from the week before. Fewer emergencies, longer stretches alone with a spreadsheet, and two presentations a month.
4. Use the result to describe yourself, not as permission. Instead of "I'm an ISTJ, so I should stay," he told his manager, "I'm at my best on planned, quiet analysis, and I want more of it." That sentence helped in his interview. The four letters would not have.

Taking It a Third Time

Ryan took the MBTI personality assessment twice and got two types. A third sitting could help him, and a retake can help you, if it has a purpose. Take it on a calm day. Answer for how you act at work by default, not for the job you're after. Then compare only the letters that changed. If a slight letter flips, that confirms it is slight. His personality has not changed. Our guide to MBTI mistyping covers the usual reasons people land on the wrong type. A third or fourth retake rarely adds anything, because by then you are mostly measuring your mood.

The MBTI Personality Assessment Next to a Career-Fit Test

Ryan took the MBTI personality assessment hoping it would settle a job choice. The two tests ask different questions. The MBTI checks your lean on each pair and hands you a type. A career-fit test studies how you handle dozens of everyday work situations, then connects those patterns to kinds of roles and workplaces. One gives you a description. The other is made to help you choose. Our comparison of personality tests and career tests goes wider.

What a Career-Fit Test Adds Beyond the Letters

Three things. First, it keeps your scores as scores. Ryan's slight S would show up as a near-even split, not as a letter he has to defend or abandon. Second, it asks about the work itself: how you make calls under a deadline, whether you would rather start projects or finish them, how much interruption you can take before your thinking suffers. Third, it ends with direction, meaning kinds of roles, and traces each suggestion back to your answers.

The Pigment career test was built for that gap. Beyond your preferences, it looks at which tasks you'd gladly take more of and which you'd hand off first, and it was designed for career decisions from day one, using current workplace research rather than a type theory from the 1940s. For someone in Ryan's spot, the useful part would be seeing how he scores on planning and deep focus, and which roles that pattern lines up with.

Pigment draws on published workplace research, and the academic check on its own scoring has not finished yet. Judge it like any other result: does it match the weeks you have lived? And if you only need shared words for a team workshop, the MBTI or a free type test will serve you fine, and you can skip us.

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MBTI and Myers-Briggs are trademarks of Myers & Briggs Foundation, Inc. Pigment is not affiliated with them.