Which MBTI Type Has the Highest IQ? What the Studies Show

No MBTI type has been shown to have the highest IQ. Charts that put INTJ or INTP on top, at 125 to 130 or more, cite no dataset we could find and disagree with one another. The peer-reviewed evidence points to a small link between IQ and one of the four MBTI letters, Intuition, which tracks the personality trait of openness. The test's own publisher says it does not measure ability. This guide sets out where the charts come from, what the studies found, and why an average of 130 for any single type fails a basic check with the site's own tools.

Where do the MBTI IQ charts come from?

Search for an MBTI IQ ranking and three kinds of source turn up. One ranking site, Braindex, lists INTP at 115, INTJ at 113, ENTP at 110, INFJ at 109, ISFJ at 101 and ESFJ at 100, and says only that its figures rest on psychometric research; we found no sample, test or method stated. Social posts, which we saw only as search results, put INTJ at 130 and INTP at 129, one of them ranking ENTJ third at 128, and a Facebook post titled as an estimate gives ranges, INTP 130 to 145 and INTJ 125 to 140. Checked on 29 September 2026, the sources disagree about who comes first and about how large the gap is, and none that we could see says who was tested, on which test, or when.

An IQ figure only means something with its scale. On the standard IQ scale, mean 100 and standard deviation 15, an average of 113 is about the 81st percentile and an average of 130 is the 97.7th, as our percentile calculator shows. Self-reported IQ adds a second problem: people's estimates of their own intelligence track tested IQ at only about r = .33 in a 2012 meta-analysis of 41 studies (Freund and Kasten), a gap our guide to the midwit meme covers.

What does the MBTI measure?

The Myers & Briggs Foundation is direct: "It does not measure ability or skill, it measures personality type." The same page adds that type does not determine ability and does not predict skills or success in any endeavour. The instrument scores four pairs of preferences, Extraversion or Introversion, Sensing or Intuition, Thinking or Feeling, and Judging or Perceiving. Each pair is scored on a scale and then split at a cut-off into a letter, which is how the 16 types are made.

How the four pairs relate to other personality models matters, because IQ has been studied against those models. McCrae and Costa (Journal of Personality, 1989) gave the MBTI and the NEO Personality Inventory to 468 adults aged 19 to 93, 267 men and 201 women. They found no support for the idea that the MBTI measures truly distinct types or dichotomies, and reported that its four indices measure four relatively independent dimensions that correspond to four of the five major personality traits. The correlations reported for that comparison are about .7 between Sensing-Intuition and openness to experience, about .7 between Introversion and low extraversion, about .4 between Thinking-Feeling and agreeableness, and about .5 between Judging-Perceiving and conscientiousness. A correlation is a number from -1 to 1 that says how closely two measures move together: .7 is strong, .2 is weak.

What do the studies find about MBTI type and IQ?

The most direct evidence comes from the Kaufman Adolescent and Adult Intelligence Test (KAIT), an individually administered IQ test that reports fluid, crystallized and composite scores. Kaufman, McLean and Lincoln (Assessment, 1996) compared MBTI results with KAIT scores in 1,297 people aged 14 to 94, tested across the United States during the KAIT's standardisation. They predicted that both Intuition and Thinking would go with higher IQ. Their abstract reports that people classified as Intuitive earned higher composite IQs than those classified as Sensing, and says most other hypotheses were not supported. It does not give the size of the gap, so we cannot say how many IQ points it was.

A second study, by Moutafi, Furnham and Crump (European Journal of Personality, 2003), gave 900 people the Watson-Glaser critical thinking test and an abstract-reasoning test, the Graduate Managerial Assessment: Abstract, alongside the MBTI and the NEO inventory. Intelligence was most consistently predicted by high openness and low neuroticism, and also by low extraversion and low conscientiousness; age was a significant negative predictor and there was no gender difference. The abstract gives no correlations for individual MBTI letters and the paper is behind a paywall, so we did not read them. Our guide to the Watson-Glaser test explains what one of those two tests asks. A third, smaller study (Carson, Stalikas and Bizot, Journal of Career Assessment, 1997) compared MBTI scales with two aptitude batteries in 122 and 99 people and reported that sex, age group and how far each test reflected general cognitive ability appeared to moderate the results.

What does the largest personality and IQ meta-analysis say about each letter?

Because the MBTI letters line up with Big Five traits, the best guide to each letter is the largest meta-analysis of the Big Five against intelligence. Anglim and colleagues (Psychological Bulletin, 2022) pooled 272 samples and 162,636 people. Openness was the strongest correlate of general intelligence, at r = .17 as observed (95% confidence interval .15 to .18) and .20 as the corrected population estimate. Neuroticism came next, at -.08 observed and -.09 corrected. Within openness the intellectual side does the work: the Intellect aspect of the Big Five Aspect Scales correlated .26 with intelligence and its openness-to-experience aspect .13, while the NEO inventory's Ideas facet correlated .25. Openness also correlated more with crystallised intelligence, accumulated knowledge, than with fluid intelligence, reasoning with new problems: .25 against .17 on the NEO measure.

• Sensing-Intuition (about .7 with openness): openness r = .17 with general intelligence, .20 corrected
• Extraversion-Introversion (about .7 with extraversion): extraversion r = -.01
• Thinking-Feeling (about .4 with agreeableness): agreeableness r = .00
• Judging-Perceiving (about .5 with conscientiousness): conscientiousness r = -.02

So three of the four letters map to traits with almost no link to IQ. A 2023 analysis in PNAS (Stanek and Ones) does find that some aspects of neuroticism, extraversion and conscientiousness relate to specific abilities, across 60,690 relations between 79 personality and 97 ability constructs, so personality is not irrelevant to cognition. Those links are between narrow facets and narrow abilities, though, not between four-letter types and IQ.

How big could the gap between types be?

An openness correlation of .17 to .20 is small, and it is easy to turn into IQ points. Split people at the middle of the openness scale and the more open half would average about 0.27 to 0.32 standard deviations above the less open half, which is 4.1 to 4.8 points on a mean-100, SD-15 IQ scale, or about 2 points above and below 100. That is our arithmetic, and it assumes a straight-line relationship. It is a real gap and a modest one, nowhere near the 15 to 30 points the charts imply.

What do we know about the personalities of high-IQ people?

The best test of the popular idea is to look at people selected for a high IQ. The one peer-reviewed personality study of high-IQ society members that we found used a different model, HEXACO, not the MBTI. Fries, Kovacs, Zeilinger and Pietschnig (Journal of Intelligence, 2022) compared 617 Mensa members with three reference samples totalling 112,637 people. Mensa members scored higher on honesty-humility and conscientiousness and lower on emotionality; on openness they scored only slightly higher, and no consistent difference emerged for agreeableness. That does not match the intellectual-type story the charts tell, though it comes from a self-selected society and a different questionnaire. Our guide to Mensa's score requirement covers the cut-off, and the high IQ societies guide lists the others.

Can a four-letter type be measured reliably?

Every chart sorts people by a four-letter label, and the label is the weak point. The Myers-Briggs Company says about 50 per cent of people get the same four-letter type on retest, although about 90 per cent get the same result on at least three of the four scales, and it reports one-month test-retest reliabilities for the individual scales of .94 to .97 and four-year figures of .57 to .81. The scores are steady; the cut-off that turns them into a letter is not. A 2025 synthesis of 193 studies of the current form (Erford and colleagues, Journal of Counseling & Development) found internal consistency of .845 to .921 but reported that structural-validity and test-retest studies were absent from the 25 years of literature it sampled. It also compared type proportions from 178 articles covering 57,170 people with the manual's norm sample of 3,009. An average IQ for INTJs is therefore an average over a group whose membership changes for about half of its members on retest.

Why does the INTJ genius idea persist?

Three explanations are plausible, though none has been measured. The type descriptions flatter, since analytical, strategic and independent read as intelligent, and the people who take an online test and post the result are a self-selected group. The letters that do relate to IQ relate a little, so stories of clever INTPs are easy to find and are not contradicted by a correlation of .17. And online IQ figures are mostly self-reported, which the Freund and Kasten figure above shows is a loose guide. Our guides to zodiac signs and IQ and to where celebrity IQ numbers come from show the same pattern: a label, a confident number and no test behind it.

What to do if you want your own IQ

A personality type cannot tell you your IQ, and an IQ cannot tell you your type. For the first, take a test that reports a score on the standard scale with its percentile; the IQ Metrics test does. Our guide to IQ vs personality explains what each kind of test answers, and the bell curve guide shows where a score sits. For the second, a measure that reports traits on a continuum, such as a Big Five inventory, matches the framework the intelligence research uses. Our guide to IQ vs EQ covers a related question people often confuse with personality type.

The honest answer to which MBTI type has the highest IQ is that nobody has shown one does. The evidence supports a small edge for people who prefer Intuition, tied to openness, from a publisher that says its test measures preferences, not ability. Treat any chart with a single number per type and no test named as a personality meme, not a measurement.

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