399 Articles
There is no verified IQ ranking for world leaders. Research can estimate some historical presidents or study intelligence and leadership, but it cannot turn public success into a global scorecard.
No MBTI type has a scientifically established highest IQ. MBTI describes preferences, while intelligence tests measure selected cognitive abilities on a separate scale.
IQ tests estimate general cognitive ability by sampling reasoning, verbal comprehension, visual-spatial thinking, working memory, and processing speed. Here is what each domain means.
A psychologist estimated ChatGPT's verbal IQ at 155 on written WAIS-III subtests, but that is not an official or current ChatGPT IQ score. Here is what the study measured.
A website using the Stanford-Binet name is not automatically the professional Stanford-Binet assessment. Learn how to judge online claims about accuracy, norms, reliability, and test use.
Learn how the standard normal model explains IQ means, standard deviations, z-scores, and percentiles—and why a bell curve is a reference model, not a guarantee about every sample.
Lex Luthor, Doctor Doom, Light Yagami and Johan Liebert dominate the smartest-villain debate. Compare their science, strategy and manipulation without mistaking fan IQs for real scores.
GLaDOS, Dr. Eggman, Master Chief's Cortana and the Illusive Man represent different kinds of video-game intelligence. Compare their feats without treating fan IQ estimates as test scores.
Spencer Reid, Sherlock Holmes, Gregory House and Walter White lead the debate about television's sharpest minds. Their quoted IQs are mostly storytelling or fan estimates, not test results.
There is no verified IQ ranking for rappers. This guide uses documented education, vocabulary research, and science work to explain what makes a rapper intellectually remarkable.
There is no defensible ranking for the smartest person with autism or Down syndrome. Learn why individual strengths matter more than a label or a single IQ.
The smartest NBA players are better judged by decision-making and documented achievements than rumoured IQ scores. See what basketball IQ means and who exemplifies it.
The 'Smartest Man Alive' meme began as a 2019 SrGrafo comic and became the 'Dumbest Man Alive' exploitable. Here is the origin, format, meaning, and why it is not an IQ claim.
Smart NFL players are best identified through football decision-making and documented academic achievements, not rumoured IQ scores. Learn what Wonderlic scores really mean.
IQ tests turn performance on different cognitive tasks into an interpretable score through psychometrics. Learn about g, CHC abilities, norms, reliability, validity, and limits.
There is no verified IQ leaderboard for politicians. Learn what presidential research actually estimates, why viral scores are unreliable, and how intelligence differs from leadership.
Historical estimates put eminent philosophers near the top of the Cox genius sample, but no philosopher has a verified modern IQ score. Learn what the evidence can and cannot show.
There is no official average IQ for Nobel laureates. A few scores are reported, but Nobel Prizes recognize contributions, not intelligence tests; here is how to read the evidence.
Mensa does not use a personality test for membership. Learn what its approved IQ route measures, what online personality quizzes can and cannot show, and how to choose a separate assessment.
Mensa has members in more than 90 countries, but country-by-country totals are not a fixed public ranking. See the latest official worldwide figures, chapter directory, and how to verify local membership.
Mensa is not one worldwide math exam. Some admission routes emphasize visual reasoning, while other approved batteries may include numerical or verbal items. Learn what to confirm before preparing.
Mensa does not use one universal IQ number: membership is based on the top 2% on an approved supervised test. See an illustrative percentile chart, test-specific qualifying scores, and why scales cannot be mixed.
Mensa has a qualifying threshold, not an official maximum-IQ ranking. Learn why test scales differ, why member scores are private, and how to evaluate claims about the highest Mensa IQ.
The Mensa Brain Index is a brain-training app metric, not the IQ score used for Mensa admission. Learn its five disciplines, percentiles, limits, and how to interpret an MBI result.
Is there an official lowest IQ ever recorded? Learn why IQ-test floors, measurement error, adaptive behavior, and outdated claims make a single world-record number impossible to verify.
Iron Man is the stronger inventor while Batman is the sharper detective and strategist. Compare Tony Stark and Bruce Wayne by evidence, not invented IQ scores.
Most YouTuber IQ numbers are unverified. Learn which creator claims have evidence, why online success is not an IQ test, and how to evaluate celebrity IQ lists.
IQ is a standardized score; intelligence is the broader ability psychologists study. Learn how IQ relates to g, what tests capture, and what the number leaves out.
IQ tests are not automatically biased because groups score differently. Bias means equally able people face different odds on an item because of irrelevant background factors.
IQ tests can be useful for neurodivergent people, but one Full Scale IQ may hide uneven strengths and needs. Learn what makes an assessment fair and when an online result is only a starting point.
IQ tests can be useful for autistic people when the assessment is accessible and the full cognitive profile is interpreted. Learn why a single score may miss meaningful strengths and support needs.
IQ tests can be accurate for people with ADHD when a qualified examiner interprets the full profile, not only one Full Scale IQ. Learn what attention, working memory, and timing can change.
Speed matters on some IQ subtests because processing speed is a measured ability, but time pressure can also reduce accuracy. Learn how timed and untimed tasks differ and how to interpret a slow score fairly.
A clear timeline of IQ testing, from Galton and the Binet-Simon scale to Stanford-Binet, Wechsler tests, and modern computer-based assessments.
A modern IQ score is age-normed, so 100 is the scale mean for women and men in the relevant reference group. Research shows domain-specific and age-related patterns, not a fixed female IQ ladder.
Learn what IQ scores around 70–75 can indicate, why intellectual disability also requires adaptive-functioning evidence, and how a qualified evaluation works.
Most modern IQ tests use a mean of 100 and standard deviation of 15. Use this classification chart as a guide, then interpret the exact test, percentile, confidence interval, and context.
BTS members do not have a verified public IQ ranking. Here is the evidence behind the widely repeated claims, especially RM's reported score.
Use this Hindi-friendly IQ range chart as a reading aid, not a diagnosis. Learn how Indian norms, language adaptation, percentiles, and test choice change the interpretation.
The IQ chart meme uses a bell curve to make a three-part joke, but the graphic is not a real personality or intelligence profile. Here is what the curve means and what it leaves out.
Do eye color, height, blood type, music, or gaming determine IQ? Review what research can support, what is only correlation, and why these traits cannot predict an individual score.
Animals and AI do not have a scientifically interchangeable human IQ score. Compare species-specific cognition with AI benchmarks and learn what the numbers can and cannot mean.
ChatGPT and Gemini can score highly on some IQ-style tasks, but neither has a stable human IQ. Learn what benchmark results do and do not mean.
An IQ of 80 is around the 9th percentile on a mean-100, SD-15 scale. Learn what the score means, why it is not a diagnosis, and how to interpret it fairly.
An IQ of 70 is about the 2nd percentile on a mean-100, SD-15 scale, but it is not by itself a diagnosis of intellectual disability. Learn why adaptive functioning and developmental history matter.
An IQ of 162 is about 4.1 standard deviations above the mean on a 15-point scale. Learn the estimated percentile, test ceilings, and why exact rankings are uncertain.
An IQ of 150 is near the extreme upper tail of a mean-100, SD-15 scale. Learn the percentile, rarity, test limits, and what the score can—and cannot—tell you.
An IQ of 148 is about the 99.9th percentile on a mean-100, SD-15 scale, but the exact percentile depends on the test and its measurement error.
An IQ of 145 is about the 99.9th percentile on the common mean-100, SD-15 scale. Learn what the score means, how rare it is, and why it is not an exact rank.
An IQ of 144 is about the 99.8th percentile on a mean-100, SD-15 scale. Learn how rare it is, how Mensa rules work, and why the score is not exact.
An IQ of 143 is around the 99.8th percentile on a mean-100, SD-15 scale. See how rare it is, what gifted labels mean, and why nearby scores overlap.
An IQ of 141 is around the 99.7th percentile on a mean-100, SD-15 scale. Learn how rare it is, what gifted labels mean, and how to interpret the margin of error.
An IQ of 139 is about the 99.5th percentile on a mean-100, SD-15 scale. Learn how rare it is, how it relates to gifted cutoffs, and why the exact number has limits.
An IQ of 117 is about the 87th percentile on a mean-100, SD-15 scale. Learn what above-average means, how it compares with gifted thresholds, and how to read error.
An IQ of 112 is about the 79th percentile on a mean-100, SD-15 scale. Learn how it fits the above-average range, why it is not a gifted cutoff, and how to read error.
An IQ of 110 is about the 75th percentile on a mean-100, SD-15 scale. Learn what above-average means, how it differs from gifted, and how to interpret the score fairly.
An IQ of 108 is around the 70th percentile on a mean-100, SD-15 scale. Learn what it means in everyday terms, how reliable it is, and what it does not predict.
An IQ of 105 is slightly above the mean and close to the 63rd percentile on a standard mean-100, SD-15 scale. Here is how to read it in context.
Modern IQ is a norm-referenced standard score, not a simple percentage. Learn the old ratio formula, today’s deviation formula, age norms, percentiles, and measurement error.
No country maintains a verified public ranking of individual IQ scores. Ethiopia and Kenya illustrate why viral names and national averages cannot establish who has the highest IQ.
No living person can be verified as the world’s current highest-IQ record holder. The famous scores are disputed; compare documented achievement, test limits, and what can actually be known in 2026.
High potential (HPI) is not a universal diagnosis or a synonym for one IQ score. Learn how potential, giftedness, performance, and assessment relate—and where the label can mislead.
RM's reported 148 is the best-known K-pop IQ claim, but most celebrity scores are unverified. See what is documented and how to read Korean-celebrity IQ lists carefully.
Giftedness and autism can share intense interests, uneven skills, and unusual communication, but they are not the same. Learn the differences, overlap, and assessment limits.
Giftedness and ADHD can occur together, and overlapping behaviors can hide either one. Learn what 2e means, what differs, and how a comprehensive assessment avoids misdiagnosis.
Gifted adults may learn quickly, seek complexity, and feel intense curiosity, but no checklist proves giftedness. Learn the evidence-based signs, limits, and assessment options.
A practical guide to genius IQ ranges by age: how age norms work, what 130 or 140 means, why thresholds are not diagnoses, and how to interpret high scores carefully.
IQ matters for education and complex work, but it is a probability advantage—not a guarantee of income, happiness, or a successful life.
Reddit and Trustpilot reviews of Cerebrum IQ repeatedly describe unexpected recurring charges after a low-cost test offer. Read the evidence, protect your card, and choose transparent pricing.
There is no single musical IQ score. Musical aptitude, music perception, and general intelligence overlap modestly but measure different abilities, and training does not guarantee a higher IQ.
There is no single scientifically valid average IQ for white people. Learn why race is not a biological test norm, how samples and context shape group scores, and what an IQ result can—and cannot—say about an individual.
Wales has no official national IQ average. Compare PISA 2022 learning scores with the Welsh Government's sampling notes, and see why neither measure can be converted into IQ points.
On a well-normed IQ scale, the mean and median are designed to sit near 100. In real samples they can differ, so the statistic and distribution must be reported together.
There is no official national IQ number for Vietnam. PISA and World Bank education data provide more defensible context, while online country-IQ estimates need careful limits.
Venezuela has no official national IQ average. Review the World Bank’s human-capital indicators and learn why education and health data cannot be converted into IQ points.
There is no authoritative USA-versus-UK national IQ table. Compare the latest OECD adult-skills results for the US and England, and learn why those scores cannot be relabeled as IQ.
There is no official national IQ average for Ukraine. Learn how PISA 2022 and Ukraine’s wartime learning assessments should—and should not—be interpreted.
There is no official national IQ average for the UK. Learn how PISA, England’s school tests, and properly normed IQ assessments answer different questions.
The UAE has no official national IQ average. Compare PISA 2022 learning scores, World Bank human-capital data, and the limits of converting either into IQ points.
Is there an official average IQ for Turkey? Learn how online estimates differ from representative education data, what PISA 2022 measures, and how to interpret the numbers responsibly.
Tunisia has no official national IQ average. Review its latest OECD PISA results, World Bank human-capital data, and why neither source can be converted into IQ points.
Thailand has no official national IQ average. Compare PISA 2022, World Bank human-capital data, and the limits of converting education outcomes into IQ points.
Taiwan has no official national IQ average. Compare PISA 2022 learning scores with Taiwan’s education data, and see why neither measure can be converted into IQ points.
Sweden has no official national IQ average. Compare PISA 2022 learning scores and human-capital indicators, and learn why neither can be converted into IQ points.
There is no official national IQ average for Sudan. Learn what the World Bank’s education and human-capital indicators can show—and why conflict-affected learning data are not IQ points.
There is no single average IQ for all students. IQ tests are normed by age, while school assessments measure learned skills. Learn what student IQ scores mean, how they are tested, and why grades are not the same thing.
Online rankings place South Korea near the top, but there is no official national IQ mean. Compare the latest online estimate with OECD PISA 2022 and understand the limits of both.
There is no official population-wide IQ mean for South Africa. Compare the limits of online estimates with TIMSS and PIRLS education data, and learn why one number cannot describe South Africans.
No representative national IQ survey establishes an average for Somalia. Learn what official education sources measure and why figures such as 67 are not valid population statistics.
Is there an official average IQ in Singapore? Compare a current online estimate with OECD PISA 2022, and learn why neither number is a national measure of innate ability.
The average IQ score reported in the USA is 100 on a modern deviation-IQ scale because the norm mean is set there. Learn how to read percentiles, age norms, confidence intervals, and online estimates.
A properly age-normed IQ test centers each US age group near 100. Compare that design with 2023 PIAAC adult-skill results and learn why age-group scores are not a national IQ ranking.
The average adult IQ score is 100 by the design of age-normed tests, not because the US has a census of everyone’s IQ. Learn how US adult skills data differ from IQ and how to interpret an individual score.
There is no official national IQ score for Lithuania. See what PISA 2022 can tell us about Lithuanian students, why it is not an IQ test, and how to interpret online estimates responsibly.
The average age-normed IQ for men is about 100 at each age band. Learn what the score means, which abilities change with age, and why sex-based charts cannot predict an individual man.
In the US, modern deviation IQ scores usually use a mean of 100 and SD of 15: about 85–115 covers one standard deviation and 70–130 about 95% of scores. Learn what those ranges do—and do not—mean.
Quebec has no official population IQ average. Compare its PISA 2022 results with the Quebec Ministry of Education's sampling and equity data, and learn why PISA scores are not IQ points.
Qatar has no official national IQ average. Compare PISA 2022 learning scores and World Bank human-capital data, and learn why neither measure can be converted into IQ points.
Portugal has no official national IQ average. Compare PISA 2022 scores, proficiency levels, and socioeconomic findings, then see why learning data cannot be converted into IQ points.
There is no official national IQ average for the Philippines. See what PISA, DepEd, and World Bank data measure—and why they should not be turned into a country IQ ranking.
Peru has no official national IQ average. Compare PISA 2022 learning scores and World Bank human-capital indicators, and see why neither can be converted into IQ points.
Average IQ scores rose across much of the 20th century, but gains differ by country, ability, and test—and some countries now show reversals. Learn what the Flynn effect actually measures.
Northern Ireland has no official national IQ average. Compare PISA 2022 scores with the Department of Education's sampling cautions and learn why achievement scores cannot be converted into IQ points.
New Zealand has no official national IQ average. Compare PISA 2022 learning scores with education evidence, and learn why they cannot be converted into one IQ number.
There is no official national IQ average for the Netherlands. See what PISA 2022 scores and human-capital data measure—and why they cannot be converted into an IQ number.
There is no official national IQ average for Nepal. Learn what Nepal’s student assessments and World Bank human-capital indicators show—and why viral IQ numbers are not population evidence.
There is no scientifically valid worldwide average IQ for Muslims. Learn why religion is not an IQ norm group, how education and sampling shape results, and what a personal score can actually mean.
There is no official national IQ average for Morocco. Learn what PISA, national learning assessments, and World Bank indicators show—and why they are not IQ points.
There is no official national IQ average for Mongolia. Learn what PISA 2022, Mongolia’s primary assessment, and World Bank indicators measure—and why they are not IQ points.
There is no single official average IQ for Malaysia. Separate popular estimates from OECD PISA evidence, see the 2022 student results, and learn why an education score cannot be converted directly into an IQ.
There is no official national IQ average for Lithuania. Learn what PISA 2022 and World Bank human-capital indicators show about learning—and why they are not IQ points.
There is no official national IQ average for Lebanon. Learn what PISA, World Bank human-capital indicators, and learning assessments can show—and why they are not IQ points.
There is no official national IQ average for Kuwait. Learn what the World Bank's Kuwait education and human-capital data can show—and why those indicators are not IQ points.
There is no official national IQ average for Kenya. Learn what Uwezo, KNEC, UNESCO, and World Bank indicators can show about learning—and why they are not IQ points.
There is no official national IQ average for Kazakhstan. Learn what PISA 2022 and World Bank education indicators measure, and why rankings are not individual IQ evidence.
There is no official national IQ average for Japan. Learn what PISA 2022 and properly normed individual IQ tests can—and cannot—tell you.
There is no authoritative Japan-versus-USA national IQ average. Compare PISA 2022 results for 15-year-old students and learn why achievement scores cannot be converted into IQ points.
Is there an official average IQ in Indonesia? Compare a current online estimate with OECD PISA 2022 and learn why neither figure is a measure of every Indonesian's ability.
There is no authoritative single IQ average for Romania. Use Romania's PISA 2022 results and sampling details to understand measured learning without turning school scores into a national IQ.
There is no official single IQ average for Poland. See what PISA 2022 can measure, why online country-IQ figures vary, and how schooling shapes the results.
There is no authoritative single average IQ for Palestine. Here is what national assessments, literacy data, and the limits of IQ comparisons can actually show.
There is no authoritative single IQ average for Pakistan. Use Pakistan's literacy, enrollment, completion, and teacher indicators to understand measured opportunity without turning education statistics into a national IQ.
There is no authoritative single IQ average for Norway. Use Norway's PISA 2022 scores and official education statistics to understand measured learning without turning them into a national IQ.
There is no authoritative single IQ average for Korea. Use PISA 2022 and Korean education statistics to understand measured achievement without turning school scores into a national IQ.
There is no authoritative single IQ average for Jordan. Examine Jordan's PISA 2022 scores, sampling details, and education context instead of turning school performance into a national IQ.
There is no authoritative single IQ average for Jamaica. Compare disputed online estimates with Jamaica's PISA 2022 results and learn what those education data can and cannot tell us.
Indian school studies report age-specific cognitive scores, not one national student IQ. See what Raven’s studies measure, how samples differ, and why averages should not be generalized.
There is no authoritative single IQ average for India. Compare disputed online estimates with ASER, PISA history, and the education factors behind measured performance.
There is no authoritative single IQ average for Egypt. Compare disputed online estimates with TIMSS 2019, literacy indicators, and the limits of turning education data into an IQ ranking.
There is no authoritative single IQ average for Bulgaria. Use PISA 2022 and Bulgaria's official education statistics to understand measured achievement without treating school scores as national IQ.
There is no official single IQ average for Brazil. Compare the commonly quoted estimates with PISA 2022, literacy, and the education conditions behind the numbers.
There is no single worldwide average IQ for Hispanic people. Learn how Hispanic origin, language, education, socioeconomic context, and test norms affect group data and individual interpretation.
There is no reliable national IQ mean for Haiti. Learn why the viral score of 67 is an extrapolation, what online samples actually measure, and what education data can—and cannot—show.
Is there an official average IQ in Germany? Compare a current online estimate with OECD PISA 2022 and learn why neither number represents every German resident.
There is no official national IQ mean for Ethiopia. Compare current online estimates with World Bank learning data and learn why education measures cannot be converted into an IQ ranking.
Average IQ tends to rise with educational attainment, but degree and major are selection signals—not IQ tests. Learn what the research can and cannot show.
Learn why there is no single Down syndrome IQ average, how score ranges and floor effects work, and why adaptive skills and an individual's profile matter more than a headline number.
There is no reliable average IQ for Democrats or Republicans. Research finds small, mixed links between cognitive measures and ideology, heavily shaped by education, age, issue wording, and sampling.
There is no scientifically settled average IQ for each continent. Compare what regional education data can show, why country samples cannot simply be averaged, and how to avoid treating a group statistic as an individual prediction.
Wondering which college majors have the highest IQ? Learn what small studies and skills data can show, why SAT averages are not IQ, and how selection and education shape the numbers.
There is no reliable average IQ by zodiac sign. Scientific tests do not support astrology as a predictor of intelligence, while birth-month effects mainly reflect school-entry and sampling factors.
State IQ tables are estimates, and there is no official IQ ranking for US counties. Learn which assessments report state or district results, how Census county education data can be used, and why a place cannot predict an individual's IQ.
There is no reliable IQ ranking of sports. Athletes may develop sport-specific perception, attention, and decision skills, but those abilities are not the same as a universal IQ score.
Research finds an association between socioeconomic conditions and average cognitive-test performance, but it does not support fixed IQ labels for social classes or individuals.
There is no scientifically valid IQ ranking by religion. Learn why education, country, language, sampling, and test design make religion-level averages unreliable and ethically limited.
Average IQ by race is not a universal ranking. Learn how researchers define samples, why scores vary with context and norms, and how to interpret group data without turning it into an individual prediction.
MBTI types do not have scientifically established average IQs. Personality preferences and intelligence are different constructs, and small sample correlations cannot rank the 16 types.
There is no reliable IQ ranking of military branches. Military aptitude tests support job classification and training decisions, not a universal intelligence league table.
Medical specialties require different knowledge, judgment, and teamwork. Research does not support a universal IQ ranking of surgeons, psychiatrists, radiologists, or other physicians.
Gen X, Millennials, and Gen Z do not have fixed average IQs. See how age norms, birth cohorts, and the Flynn effect change the comparison—and why a generation chart can mislead.
Adults with bachelor’s degrees often score higher on cognitive measures, but education-level averages are not fixed IQ cutoffs and do not predict an individual.
There is no universal IQ ranking by birth month. Research finds small, context-dependent differences that are largely explained by school-entry cutoffs and age relative to classmates.
For ages 10–16, the average age-normed IQ is about 100 at every age. Learn what changes in raw ability, why country and gender charts mislead, and how to interpret a teen score.
There is no authoritative Australia-versus-US national IQ average. Compare their PISA 2022 student results, understand the sampling cautions, and see why achievement scores are not IQ points.
Do animals have an IQ? Learn how comparative-cognition researchers measure problem solving, memory, communication, and flexibility without forcing every species onto a human IQ scale.
There is no single average IQ for ADHD, autism, or Fragile X. Learn what research can and cannot say about group scores, uneven profiles, and responsible interpretation.
Wechsler Full-Scale IQ scores are normed to a mean of 100 and a standard deviation of 15. That scale average is not a diagnosis or a guarantee about an individual.
There is no representative IQ census for data scientists. A large self-selected test dataset reports 119.66, while occupational research supports a high-complexity profile without proving one exact average.
Understand how IQ and adaptive functioning relate to autism, why DSM-5 support levels are not IQ bands, and what clinicians use to plan individualized support.
ADHD does not set an IQ ceiling, but attention, working memory, and processing speed can affect how a person performs on an IQ test.
ADHD can affect how someone performs on an IQ test, especially on attention-heavy and timed tasks, but it does not make one IQ score a diagnosis or a verdict on intelligence.
Working memory is the limited mental workspace used to hold and manipulate information. See everyday examples, how it differs from short-term memory, how tests measure it, and why capacity varies.
Processing speed is how quickly you perceive, decide, and respond to simple information. Learn what it measures, how tests assess it, why age matters, and what a slow score does not mean.
A normal IQ score is usually about 85–115, with 100 as the normed midpoint. Learn what average means, how percentiles work, and why one score is not a verdict.
A normal IQ is a norm-referenced result, not a pass or diagnosis. See why 90–109 and 85–115 both appear, how age norms work, and how to read your report.
Magnus Carlsen has no publicly verified IQ score. Learn where the often-quoted 190 estimate comes from, what his FIDE rating actually measures, and why chess strength cannot be converted into IQ.
For adults, modern IQ scales center at 100 with a 15-point standard deviation: 85–115 is the broad average range, 70–84 is below average, and 116–130 is above average.
IQ scores are age-adjusted: 100 is the normed midpoint at every age. This chart explains age bands, percentiles, test coverage, and why raw scores are different.
IQ differences reflect many genes and many environments. This evidence-based guide explains heritability, gene–environment interaction, age effects, and why a percentage cannot predict one person’s IQ.
An IQ of 122 is about the 93rd percentile on the common scale: clearly above average, below the usual gifted cutoff, and not a Mensa qualifying score by itself.
There is no official genius cutoff. IQ 130 is about the top 2%, while 140 is a traditional label; this guide explains the scale, rarity, test ceilings, and limits.
Fluid intelligence solves unfamiliar problems; crystallized intelligence uses learned knowledge. Compare Gf and Gc, see how tests measure them, and understand their different age patterns.
Concrete emotional intelligence examples for work, friendships, family, and relationships—showing what self-awareness, regulation, empathy, and social skill look like in observable behavior.
Crystallized intelligence is the knowledge and skills built through learning and experience. See everyday examples, how tests measure it, how it changes with age, and how it differs from fluid reasoning.
The lowest scores in one 2025 online IQ dataset range from 83.84 to 89.57, but they are not national measures of innate intelligence. See the data, sample sizes, and limits before comparing countries.
Brain exercises to improve memory work best when they make you retrieve information, space practice, and learn meaningful skills. Use this evidence-aware routine for names, reading, study, and everyday recall without promising a higher IQ.
Brain exercises for adults work best as varied, meaningful practice. Learn which activities target memory, attention, reasoning, and flexibility, how to build a realistic weekly routine, and what research does—and does not—show about IQ or dementia.
The average IQ of a person is 100 on modern deviation-IQ scales, and about two-thirds of scores fall from 85 to 115. Here is what average really means and how to read your result.
Average IQ in Africa cannot be reduced to one reliable continent score. Compare recent online results with research limits, education context, and responsible interpretation.
Fluid intelligence is the ability to solve new problems by finding patterns and rules. Learn how it differs from knowledge, how tests measure it, and how it changes with age.
The Baddeley and Hitch working memory model recasts short-term memory as an active system: a central executive directing verbal and visual subsystems.
Will Hunting's IQ is commonly cited around 190, but that's a fan estimate - the 1997 film never gives a number. Here's where 190 came from, the Ramanujan comparison, and why the movie argues IQ isn't the point.
Mensa is the world's oldest and largest high-IQ society, open to anyone scoring in the top 2% on an approved test. Founded 1946 in Oxford, it now has roughly 150,000 members across 90+ countries. Here is what it is and how it works.
An IQ score is a standardized number showing how your reasoning compares to others your age, centered on 100. Here is how the score is built and how to read it.
A high IQ generally means a score of 120 or above (top 10%), with 130+ (top 2%) counted as gifted. Here is what the number actually means and what it does not.
IQ stands for intelligence quotient. Here is what the two words mean, where the term came from, and why the score is set so the average is always 100.
Weird Al Yankovic's IQ is often cited near 156, but that number is unverified media. The real evidence is stronger: valedictorian at 16 and an architecture degree from Cal Poly.
Walter O'Brien's IQ is famously cited as 197, but investigative reporting has found no verifiable evidence for it, and 197 is not a credible score on any modern test.
John von Neumann's IQ is often estimated at 185 to 200, but he never took a test. Called 'the smartest man who ever lived,' he founded game theory and designed the modern computer. Here is the reality behind the legend.
US presidents ranked by IQ come from Simonton's 2006 study, putting John Quincy Adams, Jefferson, and Kennedy on top — scholarly estimates, not real test scores.
Tony Stark's IQ is most often cited at around 270 - but that number is a fan estimate, not a measurement. Marvel never gave Iron Man an official score.
Terence Tao's IQ is famously cited as 220 to 230 — but Tao himself calls that childhood estimate 'extremely noisy' and puts the real figure at just above 175. Here is the rare case of a genius debunking his own number.
Taylor Swift is often cited at an IQ of 160, but that number is unverified internet lore with no test on record. Her real, provable intelligence sits in her songwriting and her business strategy, not a score.
Tara Sharifi scored 162 on a supervised 2019 Mensa test - a real top-tier result. But on the Cattell scale (SD 24), it is not what the Einstein headlines imply.
Tai Lopez markets himself as a Mensa-level thinker, but his high-IQ and Mensa claims are self-reported and not independently verified, with no published test.
Sylvester Stallone is widely cited at IQ 160, but that number is an unverified media figure with no test behind it. What is real: he wrote Rocky in about three days and built a self-made career, which points to genuine writing and business smarts.
Streamer IQ scores almost always come from unproctored online tests taken live on stream or self-reports, so treat them as entertainment, not measurement. xQc scored 110; a few streamers have real degrees.
No verified IQ exists for Steve Martin; the 142 online is a guess. His philosophy studies, award-winning books, and Grammy-winning banjo mark a real polymath.
SpongeBob has no real IQ - any number is a joke. He fails his boating exam over and over, yet he's a social, emotional, fry-cook genius. Here's the breakdown.
Almost no soccer player has a published IQ score. The smartest footballers are ranked instead by football IQ - reading the game - and, for a rare few, real academic credentials like Socrates' medical degree and Vincent Kompany's MBA.
Snoop Dogg has no documented IQ score. The 147 figure floating around online is unsourced guesswork, but his verifiable business record shows a genuinely sharp, adaptable mind. Here is what the evidence actually supports.
There is no verified smartest person alive - top names are Terence Tao, Christopher Langan and Marilyn vos Savant, but their IQs are estimates, not real scores.
Dr. Vegapunk is One Piece's smartest, with a mind Franky calls 500 years ahead. Numbers fans quote for him, Robin, and Law are estimates, not measured scores.
Shikamaru Nara is the smartest Naruto character, with a canon IQ over 200. Every other number, from Itachi to Kabuto, is a fan estimate, not a measured score.
Ozymandias, Will Hunting (~185), Hannibal Lecter and Tony Stark top most lists - but every movie-character IQ is a fan estimate, not a measured score. Here is the honest ranking.
Reed Richards is the usual pick for smartest Marvel character, at a fan-cited IQ near 267. See the ranking, and why the numbers are estimates, not real scores.
Kenjaku tops most fan rankings of the smartest Jujutsu Kaisen characters, ahead of Sukuna and Gojo. Every IQ here is a fan estimate, not a measured score.
Hannibal Lecter tops almost every list, with Jigsaw close behind - but every horror-character IQ is a fan estimate, not a measured score. Here is the honest ranking of the genre's sharpest minds.
Ranked: Rick Sanchez 300+, Tony Stark 270, Reed Richards 267, Lex Luthor 225, Light Yagami 230. Every number here is a fan estimate, not a measured score - here is where each came from and how to read them.
Shiro from No Game No Life tops most fan rankings near a cited 200, with Kurisu Makise and Nico Robin close behind. Every number here is a fan estimate, not a measured score, and here is where each one comes from.
Bulma and Dr. Gero top the smartest Dragon Ball characters, with fans citing ~275 and ~300 IQ. Here are the ranked figures and why none of them are measured scores.
Brainiac tops the list as a 12th-level superintelligence, with Lex Luthor and Batman both cited near 200. Here are the numbers fans quote, where they came from, and why none is a real measurement.
Jimmy Neutron 210, Lisa Simpson 159, Rick Sanchez '300+' - the cartoon IQs fans love to quote, ranked, with an honest note on where every number really came from.
Light Yagami 230, Senku 220, L 211 - the IQs fans quote for anime geniuses. Here is the full ranking, where each number came from, and why none is a real score.
The smartest Americans lists mix unverified high-IQ claimants like vos Savant and Langan with truly accomplished minds like Feynman and Tao. Here is who is who.
Sister Sage is written as the smartest person alive in The Boys, so fans quote IQs of 300+ - but that number is a fan estimate, since the show never gives one.
People with high emotional intelligence share five habits: self-awareness, emotional regulation, empathy, social skill, and drive. Here is how to spot each.
Sherlock Holmes's IQ is commonly cited at around 190, sometimes higher. It's a fan estimate, though - he's fictional and never tested. Here's where the number came from and what it actually means.
Sharon Stone's IQ is usually cited as 154, but no documented test backs it and she walked back her Mensa claim in 2002. Treat it as media lore, not a score.
Shakira is widely reported to have an IQ near 140 and tied to Mensa, but neither claim is documented. Here is the origin and her real signs of intelligence.
Fans commonly cite Senku's IQ at ~200-220, but it is a fan estimate, not a measured score. Dr. Stone celebrates real science, and his appeal is method over the number.
The scientists atop highest-IQ lists, Newton ~190 and Einstein ~160, are nearly all estimates, not measured scores. Only Feynman's ~125 was ever tested.
Sam Altman's IQ is sometimes cited as 170, but the figure appears only on estimate sites with no test behind it. Altman has never disclosed a score. Here is what is actually known and why the number is meaningless.
Rowan Atkinson is often cited around IQ 178, but that number is an unverified media figure with no test behind it. His real, verifiable credential is a master's in electrical engineering from Oxford - a striking contrast with the wordless Mr. Bean.
Rick Sanchez's IQ is fan-cited at 300 or higher, but that number was never measured - he is a cartoon written as the smartest being in the universe. Here is where the figure comes from and why 300+ is off any real scale.
Richard Feynman's IQ was reportedly 125 on a school test he liked to joke about - a real but modest old score. His career shows how little one number captures.
Reed Richards's IQ is most often cited at around 267 - but that number is a fan estimate, not a measurement. Marvel never gave Mr. Fantastic an official, tested score, and the figure sits well past the real scale.
Almost no rapper has taken a verified IQ test, so viral figures like Jay-Z's 148 are guesses. What real data - vocabulary studies and business empires - shows.
Quentin Tarantino's IQ is widely cited at about 160, but that figure is an unverified media estimate, not a tested score. The real evidence of his mind is his encyclopedic film knowledge and two screenwriting Oscars.
Ozymandias's commonly-cited IQ is ~250+, but that is a fan estimate, not a measured score. Watchmen literally frames Adrian Veidt as the smartest man in the world, and here is where the number comes from and why it sits off the real IQ scale.
Nolan Gould, who played the clueless Luke on Modern Family, is widely reported to have an IQ around 150 and to be a Mensa member. Here is where that number comes from and what it honestly means.
Nikola Tesla's IQ is estimated anywhere from 160 to 310 — a 150-point range that tells you the figure was never measured. Here is where those numbers come from and what really made Tesla's mind extraordinary.
Near's commonly cited IQ is around 190-200+, a fan estimate, not a measured score. He is the successor who finally beat Kira, and fans still argue whether he tops L. Here is where that number comes from.
No NBA player has a published IQ score, so 'smartest' really means elite basketball IQ, plus for a few real academic or business credentials.
Natalie Portman's IQ is often cited as 140, an unverified media figure. Stronger and verified: a Harvard psychology degree and two published science papers.
Musicians' strongest high-IQ cases are degree-holders like Brian May, who holds an astrophysics PhD. The pop-star IQ numbers stay unverified.
Mensa needs a score in the top 2 percent (98th percentile) — IQ 130 on the Wechsler scale, 132 on Stanford-Binet, or 148 on Cattell. It is a percentile, not one fixed number, so the cutoff changes with the test used.
The Mensa IQ Challenge is a licensed quiz and brain-training app for fun and practice. It is not the official Mensa admission test and does not qualify you for membership.
Mayim Bialik is often cited at an IQ of 150 to 163, but those are unverified media numbers. Her real, checkable credential is a UCLA PhD in neuroscience earned in 2007.
No verified IQ score exists for Matt Damon; the cited 160 is unsourced. The real evidence is his Harvard studies and Oscar-winning Good Will Hunting screenplay.
Mark Zuckerberg's IQ is usually cited as 152, but there is no evidence he ever took a public IQ test. That figure is internet lore. Here is where it came from and what his record actually verifies.
Marilyn Monroe is often cited at IQ 168, but that number has no documented source and is almost certainly a myth. What is real is her genuine intellectual life.
Lydia Sebastian scored 162 on a supervised Mensa test in 2015 at age 12 - a real, measured result. Here is why that 162 sits on the Cattell SD-24 scale, why it is the near-ceiling, and why the Einstein comparison is a headline, not a fact.
Luffy, Goku, Naruto and Natsu top most fan lists of the lowest IQ anime characters, but every 'IQ' here is a joke, not a measured score, and their low book smarts almost always hide elite battle instinct or huge heart.
Lisa Kudrow has no verified IQ score; the '154' online is an unsourced guess. The real proof: a Vassar biology degree and a peer-reviewed headache study.
Light Yagami's IQ is fan-cited at roughly 200-230, but that number was never measured - he is a fictional character. Here is where the figure came from, how it stacks up against L, and why 200+ is not a real scale.
Lex Luthor's IQ is fan-cited as 200+ (often 225) - an estimate, not a measured score. He is written as DC's smartest human, but 200+ is off the real scale.
Leonardo da Vinci's IQ is usually estimated between 180 and 220, but he never took a test — IQ scoring didn't exist until 400 years after his death. Here is where those numbers come from and what his notebooks really prove.
L Lawliet's IQ is fan-cited at 185-200+, but it is an estimate, never measured. Here is where the number comes from and how it maps to the real IQ scale.
Kesha is commonly cited at an IQ over 140 with a near-perfect SAT near 1500, but both are unverified media claims. Her savvy songwriting is the real talent.
There is no published IQ for Ken Jeong - any number online is a guess. What is real: an M.D. from UNC and years practicing internal medicine before Hollywood.
No verified IQ score for Jordan Peterson exists. The ~150 online is a self-reported estimate, not a clinical measurement — here is what is actually on record.
Jodie Foster is widely cited with an IQ of about 132, but no documented test exists. What is documented is stronger: a Yale magna cum laude degree and self-dubbing in fluent French.
James Woods is often cited at IQ 180-184, but that number is an unverified claim. What's documented is his admission to MIT, which he left to become an actor.
James Franco's IQ is usually quoted at 130, but that number comes from celebrity-IQ sites, not any test he took. The real evidence is stranger: a UCLA degree, four MFAs, and a Yale English PhD.
Isaac Newton's IQ is commonly estimated at around 190, but he never took a test — the figure comes from a 1926 study that read his biography, not his mind. Here is where it comes from and what Newton actually did.
A very high IQ brings real advantages but also documented downsides: social friction, overthinking, and perfectionism. Here is what the research and experience actually show.
The average IQ is 100 and each 15 points marks one step from the middle. This IQ scale, classification chart, and percentile guide shows what your score means.
The IQ scale centers on 100 with a spread of 15 points. This chart lists every IQ range, its classification label, the share of people in it, and its percentile.
An IQ percentile shows what share of people you outscored: IQ 100 is the 50th percentile, IQ 130 the 98th (top 2%). Use the chart below to find yours.
IQ scores follow a bell curve with a mean of 100 and a standard deviation of 15: about 68% score 85-115, 95% score 70-130, and 99.7% fall between 55 and 145.
In psychology, IQ is a standardized score for general cognitive ability — the g factor — set to a mean of 100 and a standard deviation of 15. How psychologists measure it.
IQ is one of the best single predictors of school and job performance, but it decides only part of success, and is 50-80% heritable in adults.
An IQ of 200 is not a score any modern standardized test can actually produce or verify. On the mean-100, SD-15 scale it sits ~6.7 SD above average, rarer than 1 in billions. Here is where the number really comes from.
An IQ of 160 sits near the 99.997th percentile, about 1 in 30,000 people and roughly 4 standard deviations above average. Here is what that number really means, why it carries large uncertainty, and where the Einstein legend fits in.
An IQ of 142 sits at the 99.7th percentile — the top 0.3%, about 1 in 300 people. It is 2.8 standard deviations above average, past the old 140 genius line.
An IQ of 140 is near the 99.6th percentile — top 0.4%, about 1 in 260 people. It is 2.67 standard deviations above average and the score once labeled genius.
An IQ of 138 is about the 99th percentile — top 1%, roughly 1 in 175 people. It sits 2.53 standard deviations above average, well above the Mensa cutoff.
An IQ of 137 is the 99th percentile — top 1%, about 1 in 150 people. It sits 2.5 standard deviations above average, well past the Mensa and gifted cutoffs.
An IQ of 136 sits at about the 99th percentile — top 1%, roughly 1 in 125 people and 2.4 SD above average, above the Mensa cutoff. What a score of 136 means.
An IQ of 135 is a gifted score at about the 99th percentile — the top 1%, roughly 1 in 100 people. It sits well above the 130 gifted and Mensa cutoff.
An IQ of 134 is in the gifted range at about the 99th percentile — the top 1%, roughly 1 in 85 people. It sits comfortably above the 130 gifted and Mensa cutoff.
An IQ of 133 is gifted, at about the 99th percentile — top 1-2%, roughly 1 in 70 people. It clears both the 130 gifted line and the Mensa cutoff.
An IQ of 132 is in the gifted range at about the 98th percentile — top 2%, roughly 1 in 60 people. It is the exact Mensa cutoff on the Stanford-Binet.
An IQ of 131 sits at about the 98th percentile — top 2%, roughly 1 in 50 people. It just clears the +2 SD gifted and Mensa threshold of 130 by a single point.
An IQ of 130 is the 98th percentile — top 2%, about 1 in 50 people. It is two standard deviations above average and the standard gifted and Mensa cutoff.
An IQ of 129 is the 97th percentile — the top of the superior range, about 1 in 37 people, and just one point below the 130 gifted and Mensa cutoff.
An IQ of 128 is at about the 97th percentile — superior, top ~3%, roughly 1 in 32 people, and just 2 points below the gifted/Mensa cutoff of 130.
An IQ of 127 is at about the 96th percentile — superior, top ~4%, about 1 in 28 people. What 127 enables and whether it counts as gifted (no, just shy).
An IQ of 126 sits at about the 96th percentile — superior, top ~4%, roughly 1 in 24 people. What 126 enables, whether it counts as gifted (no), and how it compares.
An IQ of 125 is at the 95th percentile — superior, top ~5%, about 1 in 21 people. What 125 enables, whether it counts as gifted (no), and how it compares.
An IQ of 124 is at roughly the 95th percentile — superior, top ~5%, about 1 in 18 people. What 124 enables, whether it counts as gifted (no), and how it compares.
An IQ of 123 is at roughly the 94th percentile — superior, top ~6%, about 1 in 16 people. What 123 enables, whether it's gifted (no), and how it compares.
An IQ of 122 is at the 93rd percentile — superior, top ~7%, about 1 in 14 people. What a score of 122 enables, whether it counts as gifted (no), and how it compares.
An IQ of 121 is at the 92nd percentile — superior, top ~8%, about 1 in 12 people. What a score of 121 enables, whether it counts as gifted (no), and how it compares.
An IQ of 120 is at the 91st percentile — superior, top ~9%, about 1 in 11 people. What a score of 120 enables, whether it counts as gifted (no), and how it compares.
An IQ of 118 sits at about the 88th percentile, in the top 12 percent, higher than 7 out of 8 people. Here is what a 118 score means and how rare it is.
An IQ of 116 sits at about the 86th percentile, higher than 6 out of 7 people, just past one standard deviation above average. What a 116 score means.
An IQ of 115 sits at about the 84th percentile, one step above average, higher than roughly 5 out of 6 people. Here is what a 115 score really means and how rare it is.
An IQ of 114 sits at about the 82nd percentile, in the high-average band, higher than roughly 5 out of 6 people. What a 114 really means and how rare it is.
An IQ of 113 sits at about the 81st percentile, in the high-average band, higher than roughly 4 out of 5 people. Here is what a 113 really means and how rare it is.
The intelligence quotient (IQ) is a standardized score of reasoning ability, set so the average is 100. Here is what IQ means, where it comes from, and what it measures.
The highest IQs in history, like Goethe near 210 and Newton near 190, come from Catharine Cox's 1926 study, which estimated them from biographies, not tests.
The woman most often named with the highest IQ is Marilyn vos Savant, listed by Guinness at about 228 as a child. As of 2026 that figure is disputed: it is an old ratio score, not a modern measured one.
The smartest athletes are known by real credentials, not IQ scores: Frank Ryan and John Urschel earned math PhDs, Myron Rolle a Rhodes Scholarship.
There is no true maximum IQ. The WAIS-IV and Stanford-Binet 5 top out near 160, and any score above roughly 145 is an estimate, not a precise measurement.
The smartest people from Japan are best identified by verified genius - Nobel physicists like Hideki Yukawa and Shin'ichiro Tomonaga and mathematicians like Shinichi Mochizuki - not by IQ numbers, which for almost all of them were never measured or published.
India's smartest minds are defined by verifiable genius, not IQ scores: Ramanujan's mathematics and Anand's five world chess titles, not viral numbers.
Several actors are genuinely brilliant, but most Hollywood IQ numbers are unverified press claims. The real signals are Mensa membership and hard degrees.
The highest IQ ever recorded is usually credited to names like Marilyn vos Savant or William Sidis, but the numbers (up to 300) are disputed and mostly unmeasurable.
The highest average IQ estimates cluster in East Asia: Hong Kong, South Korea, China, Japan, Taiwan and Singapore, at roughly 104 to 107. Figures are contested.
The highest-IQ chess players are Kasparov, Fischer, and Carlsen, but only Kasparov's 135 was measured. The 180-190 figures are media estimates, not real scores.
Ranked by fan consensus: Aizen, Meruem, Urahara, Erwin Smith and Shikamaru top the battle IQ list - none of it a measured score, all in-combat tactical genius.
A high IQ usually means a score of 120 or above, with 130+ marking the gifted top 2%. Learn the research-backed traits, genius threshold, and real downsides.
A high IQ society admits people above a set percentile. Mensa (top 2%) is the largest; groups like Intertel, the Triple Nine Society and the Mega Society set far rarer cutoffs.
High intelligence correlates with curiosity, fast learning, working memory, and abstract reasoning, but these are hints, not proof. Only a test measures IQ.
An IQ score is considered high from about 120 up (top 10%), with 130+ gifted and 145+ highly gifted. Here is a clear breakdown of the high IQ levels and what each means.
Hedy Lamarr's IQ is cited as ~140, but no test is on record. What is verified: her 1942 frequency-hopping patent that anticipated Wi-Fi, Bluetooth, and GPS.
Any score from 90 to 109 is squarely average and perfectly good; 110-119 is above average and 120+ is superior. What really counts as a good IQ score.
Fans peg Goku's book IQ low (often ~76), yet rate his battle IQ elite. Both are fan estimates, not measured scores. Here is the honest gap between the two.
Gifted usually means an IQ at or above 130 (top ~2%), but one score isn't the whole story. The levels, the signs in kids and adults, and twice-exceptional (2e).
There is no official cutoff for genius, but scores of 140+ have traditionally been called genius or near-genius, and 130+ already ranks in the gifted top 2%.
Geena Davis is a verified Mensa member, so she scored in the top 2% (about IQ 130+). The cited 140 is a media estimate; Mensa membership is the checkable fact.
Light Yagami 230, Rick Sanchez 300+, Sherlock 190 - the IQs fans love to quote. Here is where each came from, and why no character ever took a real test.
Einstein's 160, Newton's 190, the mythical 228 - almost every famous IQ is an estimate, not a measured score. Here is what was really tested and what was guessed.
Plenty of hugely successful people had ordinary measured IQ scores. Richard Feynman scored ~125 in school and Muhammad Ali reportedly ~78 on an army test. Here is the honest evidence that an average IQ is no barrier to greatness.
Dyslexia is a specific reading difficulty, not a shortage of intelligence. Richard Branson, Steven Spielberg and Charles Schwab are all dyslexic and brilliant, proof that IQ tests measure narrow skills, not a person's ceiling.
Enrico Fermi's IQ is usually listed as around 190, but he was never tested — the figure only appears on IQ databases. His real genius was a specific, teachable skill: estimating almost anything from almost nothing.
Emotional intelligence (EQ) is the ability to recognize, understand, and manage emotions in yourself and others. It complements IQ rather than replacing it. This guide covers the main models, the honest IQ vs EQ evidence, and signs of high EQ.
Emma Watson's IQ is often cited as 138, but that number is an unverified media figure with no test on record. What is verified is stronger: a BA in English literature from Brown University, earned while she was still filming Harry Potter.
Elon Musk's IQ is most often cited as 155, but that number has no verified source. His documented SAT score of 1400 points to an estimate closer to the low 120s. Here is what the evidence actually supports.
Patrick Star tops the list, with Homer, Peter, Cosmo and Ed right behind - a fun ranking of the funniest low-IQ cartoon characters, where every 'IQ' is a joke.
Dolph Lundgren's IQ is often cited as 160 - unverified media lore. But his master's in chemical engineering and Fulbright scholarship to MIT are documented and real.
Dexter Holland's IQ is widely cited around 160, but that number comes from an informal online source, not a real test. What is verifiable is his 2017 USC PhD in molecular biology and his published HIV research.
Fans rank L (~250) and Light (~230) at the top, then Near, Mello, and Mikami. Here are the commonly-cited numbers and what they'd mean on a real IQ scale.
David Duchovny's cited IQ of 147 is an unverified media figure. The real evidence is his Princeton English degree with top honors and a Yale master's with an unfinished PhD.
There is no public IQ figure for Dario Amodei — not even an invented one. The Anthropic CEO and Claude co-founder has a physics PhD and a landmark AI record. Here is why the missing number is the most honest answer of all.
The IQ of 160 attached to Conan O'Brien is a guess, not a tested score. What is real: he graduated Harvard magna cum laude and ran the Harvard Lampoon.
Reed Richards and Brainiac top the list, with Doctor Doom, Lex Luthor and Tony Stark close behind - but every IQ here is a fan estimate, not a measured score.
A modern IQ score isn't one number but four cognitive abilities: verbal comprehension, fluid reasoning, working memory, and processing speed.
Cindy Crawford's cited IQ of 154 is an unverified media figure. The real evidence: she was high-school valedictorian and won a chemical-engineering scholarship to Northwestern.
Christopher Langan's IQ is reported at 195-210 and media call him 'the smartest man in America' — but those figures come from unstandardized, unverified tests.
Sidis at 250, Kim Ung-yong at 210, Adragon at 400 - almost every record child-prodigy IQ is an inflated childhood ratio score or a guess, not a measured number.
Carol Vorderman's IQ is widely cited as 154, a figure repeated on bio sites but never published from a formal test. What is verifiable: a Cambridge engineering degree and 26 years of mental arithmetic on Countdown.
No verified IQ score exists for Brian May; the online numbers are guesses. What is real: a 2007 astrophysics PhD from Imperial College and NASA mission work.
No verified IQ score exists for Professor Brian Cox, but his PhD in high-energy particle physics and his CERN career are the real, documented evidence of a rare mind.
Elon Musk near 155, Bill Gates near 160, Bezos near 150 — the famous billionaire IQ numbers are almost all unverified media estimates. A few have real credentials, but wealth turns on far more than IQ. Here is the honest ranking.
Bill Gates's IQ is often cited as 160, but that number is extrapolated from his near-perfect SAT of 1590 — not a real test. Corrected honestly, the estimate lands in the 140s. Here is what the evidence actually shows.
A below average IQ is roughly 80 to 89; low IQ runs from borderline (70-79) to extremely low (below 70). A number alone never decides intellectual disability.
Batman's commonly-cited IQ is ~192, but that is a fan estimate, not a measured score. His real edge is peak-human deduction, obsessive preparation, and polymath training. Here is where the number comes from and what it would mean on a real scale.
Every IQ test is normed so its population averages 100, yet cross-country estimates put the global average human IQ around 82 to 90 — here is why they differ.
The average IQ in the United States is commonly estimated near 98, where the global mean is set to 100. Here is where the number comes from and why it is shaky.
The average IQ for teenagers is 100 at every age because IQ tests are age-normed. See the normal teen range and how the still-developing brain shapes scores.
The average IQ of a teacher is estimated around 105-115 (above average), rising at higher grade levels and for university faculty. These figures are estimates from occupational data, and good teaching demands far more than IQ.
The average IQ score is 100 by definition, and about two in three people fall between 85 and 115. Here is what that means for where you stand.
The average IQ of scientists is estimated at roughly 125-135, among the highest of any profession. Anne Roe's 1952 study of eminent scientists found a median near 137, but these are estimates and creativity matters as much as raw IQ.
The average IQ in Russia is usually estimated at roughly 96-97 (world mean 100), close to Europe, but these contested figures reflect schooling, not ability.
The average IQ of programmers and software engineers is estimated at 115-125, above average to superior, though skill also depends on practice and persistence.
The average IQ of police officers is estimated at roughly 100-105 — average to slightly above, plus the recruit who was rejected for scoring too high.
The average IQ of airline pilots is estimated around 110-120, above average. But flying rewards spatial reasoning, multitasking, and calm judgment as much as raw IQ, and selection uses aptitude batteries, not IQ tests.
Pigs have no human-style IQ score, but research ranks them with dogs and near a 3-year-old child: they play joystick games, use mirrors, and remember.
The average IQ of a physicist is estimated at roughly 125-135, among the highest of any profession, though these are estimates, not a census. Here is what the research actually shows.
The average IQ of PhD holders is estimated around 125, roughly the top 5% — and it rises with each level of education, from high school to doctorate.
Octopuses have no human-style IQ, but they are the smartest invertebrates by far: ~500 million neurons, tool use, jar-opening, and escapes. Here is what the science actually shows and why an octopus mind is nothing like ours.
The average IQ of nurses is estimated in the low 110s — above average, around the 70th-80th percentile — based on occupational-IQ data, though a great nurse needs far more than a test score.
Published datasets put the average IQ in Nigeria in the low-to-mid 70s, but these figures are heavily contested, drawn from small unrepresentative samples, and reflect schooling, nutrition and health, not innate ability.
The average IQ of a neurosurgeon is estimated around 125-140, among the highest of any profession. Here is what that number rests on, why the selection is so extreme, and why surgical skill needs far more than a high score.
The average IQ of a Navy SEAL is estimated around 110-120, inferred from ASVAB scores. But SEALs take the ASVAB, not an IQ test, and grit beats raw IQ.
Monkeys have no human-style IQ score — IQ tests are built for people. By the measures scientists actually use, monkeys are clever tool-users and number-trackers, but generally rank below the great apes.
National-IQ datasets put the average IQ in Mexico in the high 80s to low 90s, but these figures are contested estimates shaped by schooling, nutrition and test conditions, not measures of innate ability.
On general intelligence there is no meaningful difference: average IQ is about 100 for both men and women. Small gaps show up only in specific abilities, and the variability question is still debated.
The average IQ in Israel is usually estimated in the low-to-mid 90s (world mean 100), but these contested figures reflect sampling and schooling, not ability.
The average IQ in Ireland is estimated at roughly 96 to 98 on a scale where the global mean is set to 100, near the European average. Here is where that number comes from and why it is contested.
Gorillas have no true IQ score because IQ tests are built for humans, but the famous Koko reportedly tested 70-95 on human child scales. Here is the honest science on how smart gorillas really are.
Gen Z's average IQ is 100 by design, because tests are age-normed against each generation's own peers. The real question is whether raw ability is rising, and the century-long Flynn effect has stalled or reversed in several developed countries since the 1990s.
The average IQ in Europe is estimated at roughly 97 to 100 on a scale where the global mean is 100, with most countries clustered in the high 90s to low 100s.
The average IQ of engineers is estimated around 120-130, among the highest-scoring professions, especially for spatial and mathematical reasoning.
Elephants have no human-style IQ number, yet by the measures scientists use they rank among the smartest animals that pass the mirror test and make tools.
The average IQ of an electrician is around 100-110, average to slightly above. Electrical work rewards spatial reasoning IQ tests only partly measure.
Dolphins have no true IQ score, but by the yardsticks scientists actually use, brain-to-body ratio, the mirror test, tool use, and named calls, they rank among the smartest animals on Earth, just behind great apes.
Dogs do not have a human-style IQ, but by the measures scientists use the average dog understands about 165 words and reasons like a 2 to 2.5-year-old child, with the smartest breeds learning 250+ words.
The average IQ of doctors is estimated at roughly 120-130, among the highest of any profession — here's where that estimate comes from and its limits.
Crows have no human-style IQ number, but on cause-and-effect and planning tasks corvids rival a 5-to-7-year-old child. Here's the real science on how smart crows are, minus the myths.
The average IQ in China is estimated around 104-105 in national datasets, among the world's highest, but these figures are contested and skewed by urban sampling and schooling, not proof of innate ability.
Chimpanzees have no real IQ score, since IQ tests are made for humans. Yet they rank among the smartest animals, and can beat adults at split-second memory.
The average IQ of a CEO is estimated around 115-125 — above average but not genius-level, and top executives are rarely the smartest people in the room.
Cats don't have a human-style IQ, but the science is clear: with about 250 million cortical neurons, a cat's problem-solving and memory land near a 2-3-year-old child.
The average IQ in Canada is estimated at roughly 99 to 101 on a scale where the global mean is set to 100, near the top tier globally. Here is where that number comes from and why it is soft.
Average IQ by state, ranked for all 50: Massachusetts leads at 104.3 and Mississippi is lowest at 94.2, with a US average near 98. See where your state lands and what the numbers really mean.
Average IQ by profession: physicians, professors and lawyers rank near 125-132 in the research, while manual and service roles sit near 100 — with huge overlap.
Average IQ by age is about 100 at every age — because IQ scores are adjusted for age. What actually changes is raw ability: processing speed peaks near 19, memory around 25, and vocabulary as late as your 60s.
The average IQ in Australia is estimated at roughly 98 to 100 on a scale where the global mean is set to 100, placing it near the top tier. Here is where that number comes from and why it is soft.
The average IQ of attorneys is estimated around 115-130, one of the higher-scoring professions — here's where that number comes from, the LSAT caveat, and its limits.
The average IQ for adults is 100 at every age because IQ tests are age-normed. See the normal range and how fluid vs crystallized intelligence shift with age.
The average IQ of accountants is estimated around 110-120, above the population average, reflecting the numerical and analytical demands of the job.
The average IQ for a 10-year-old is 100, because children's tests like the WISC are age-normed. Here is the normal range, how scores shift as kids grow, and what parents should know.
Ashton Kutcher's cited IQ of 160 is an unverified media figure. The real signals: he studied biochemical engineering and became a successful early tech investor.
Ashley Rickards is reported at an IQ around 135, but the solid, verifiable fact is her Mensa membership since 2011 - which means a tested score in the top 2%. Here is what is documented versus what is just a media number.
Da Vinci is estimated near 180-200 and Shakira around 140, but most creative-genius IQs are estimates or media claims - and IQ only partly predicts creativity.
Alicia Keys's IQ is widely cited as 154, but that number is an unverified media figure with no test on record. What is verified is stronger: high-school valedictorian at 16, a Columbia scholarship, and 17 Grammys built on her own songwriting.
Alexis Martin is reported to have an IQ above 160 and joined Mensa at age 3, among its youngest members ever. Plus why toddler IQ scores are so uncertain.
No verified IQ score exists for Ainan Cawley — yet the record is real: he passed O-level chemistry at 7, the youngest ever. Documented feats vs. the numbers online.
Adragon De Mello was reported to have an IQ near 400 and graduated college at 11 in 1988. But 400 is a childhood ratio score that means nothing on any modern IQ scale.
Yes, professionally administered IQ tests are highly reliable (test-retest around 0.96) and valid. A good online test estimates your score within a few points; a bad one is inaccurate or a subscription trap. Here is how to tell them apart in 2026.
Above average IQ begins just past 100: scores of 110-119 are classed high average (top 25-10%), and 120+ moves into superior. Here is where the line sits and what it means.
Stephen Hawking's IQ is commonly estimated at around 160. He never revealed a score — and his famous answer about IQ tests says more than any number.
Albert Einstein's IQ is commonly estimated at around 160. He never took a test, but his achievements make the number plausible. Here's the full story.
Can optical illusions measure your IQ? Explore the science behind visual puzzles and how perception, pattern recognition, and the brain relate to intelligence.
Average IQ by country: see the latest global rankings, understand what drives national differences, and why these numbers need careful interpretation.