— Famous people & IQ
Simone de Beauvoir IQ: 150 (estimated)
Simone de Beauvoir's IQ is estimated at 150. This is a widely-cited estimate based on Simone de Beauvoir's body of work and historical accounts — not a verified, administered psychometric test score. An IQ of 150 would place a person in the top 0.04% of the population (roughly 1 in 2,331).
Important note: Simone de Beauvoir's IQ figure of 150 is an estimate. Most published celebrity IQ figures circulate without clinical sourcing. Treat the number as a defensible estimate, not a verified measurement.
Where the 150 estimate comes from
→Pause. Find out YOUR IQ before you keep reading.The number is a widely-circulated estimate based on Simone de Beauvoir's documented work, peer assessments, and historical accounts. Like most famous-person IQs, it should be read as a defensible upper-end estimate rather than a measured score.
What the score implies — and what it doesn't
→Curious how YOU score? 20-min calibrated test.An IQ of 150 is in the Profoundly Gifted range — top 0.13% or so. Capable of mastering arbitrary abstract subjects with comparatively little instruction.
Simone de Beauvoir's achievements in Philosopher reflect more than raw IQ. The pattern across high-achieving figures is that cognitive ability gets you into the game; the variables that determine outcomes from there are conscientiousness, sustained focus, time-on-task, mentorship, environment, and a tolerance for the social isolation that often accompanies deep specialized work.
Comparison with peers in Philosopher
→The numbers above? Find out where YOU land.| Person | Est. IQ | Note |
|---|---|---|
| John Stuart Mill | 180 | Cox estimate |
| Voltaire | 190 | Cox estimate |
| Bertrand Russell | 180 | Principia Mathematica |
| Ludwig Wittgenstein | 170 | Logical positivism |
| Karl Marx | 160 | Cox estimate |
| Simone de Beauvoir | 150 | Existentialism, feminism |
The limits of celebrity IQ estimates
→Knowing about IQ ≠ knowing yours. Take the test.- Historiometric estimates like Cox's are biographical inference, not measurement. Catharine Cox herself rated the reliability as "I" through "IV"; many figures are rated "III" or "IV" — weakest evidence.
- Childhood ratio-IQs (mental age / chronological age × 100) systematically inflate scores compared to modern deviation IQ. A 1900-era child labeled "IQ 200" would likely test 140-160 on a modern WAIS.
- Self-reported figures from public figures are essentially never independently verifiable.
- Achievement is not pure intelligence. The correlation between extreme achievement and pure IQ peaks around 130-140; above that, conscientiousness and circumstance dominate the variance.
Frequently asked
→Stop reading. Start testing →What is Simone de Beauvoir's IQ?
Simone de Beauvoir's IQ is widely estimated at 150, based on existentialism, feminism. This is an estimate, not a clinically measured score.
Did Simone de Beauvoir actually take an IQ test?
Likely not a formal modern IQ assessment. Celebrity IQ figures are usually estimates from secondary sources rather than verified clinical results.
How accurate is the IQ 150 figure?
Treat it as a defensible upper-end estimate within ±10-15 points. Famous-person IQ estimates carry substantial uncertainty and methodological bias.
Other figures in Philosopher
→Pause. Find out YOUR IQ before you keep reading.Frequently asked about Simone de Beauvoir's IQ
What was Simone de Beauvoir's IQ?
Simone de Beauvoir's IQ is estimated at 150, though this is a retrospective estimate based on their work and accomplishments rather than a verified test result.
Did Simone de Beauvoir actually take an IQ test?
There is no reliable public record of Simone de Beauvoir taking a standardized adult IQ test with a verified score. The figure of 150 is an estimate that circulates in popular media.
How rare is an IQ of 150?
An IQ of 150 occurs in roughly 1 in 2,331 people — the top 0.04% of the population on a standard deviation IQ scale (SD 15).
Is Simone de Beauvoir's IQ score reliable?
Treat it as suggestive, not definitive. Famous-person IQ figures are often extrapolated from achievements, childhood ratio-IQ tests, or unsourced media claims, none of which are directly comparable to a modern administered adult IQ test.
Related reading
→Curious how YOU score? 20-min calibrated test.Sources: Cox, C. M. (1926), The Early Mental Traits of Three Hundred Geniuses; Simonton, D. K. (1994), Greatness: Who Makes History and Why; Eysenck, H. J. (1995), Genius: The Natural History of Creativity.
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