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However, we can healthilyâ¦ assume that had some equivalent of an IQ test existed in history, that great thinkers such as Socrates, da Vinci, Isaac Newton, and so forth would have score up there.   Marilyn vos Savant has a IQ of 230. She has the highest recognised IQ score.
IQ tests were first used in France in 1904 to identify intelligent children. And since then, experts have estimated that the 18th Century German writer and poet Goethe had the highest IQ in history, at 210. The tests are not a measure of general knowledge, but of how the mind copes with reasoning problems and mental arithmetic. Normal IQ is from 85 to 115, and genius level starts at 145.