William James Sidis
If you want to know the record holder for the highest IQ in the world, then you’re in the right place. Although many people think it’s Steven Hawking with an IQ of slightly over 200, or Marilyn vos Savant with and IQ of 228. We want to mention that results of IQs can vary from test to test and by age. For example an IQ of 170 at the age of 10 years old is the equivalent of an adult IQ of only 106. The other problem is that there is no set way to measure intelligence as there are too many aspects to take into account (memory, problem-solving, etc.), so don’t put too much faith in your IQ rating.
First of all, you have to understand that most people never took the IQ test and that standardized testing began in the 20th century, so we can’t never be completely certain, but the man who is believed to have had the highest IQ score in history is William James Sidis. It is estimated that his IQ was between 250 and 300, but the testing was different from standard IQ tests. With this score he easily beats people like Albert Einstein and Steven Hawking for the top spot.
He entered Harvard University at the age of 11. It was claimed that he was conversant in over forty languages and dialects when he was an adult, although some people doubt that. He was exceptional in both linguistics and mathematics, but also in many different subjects like cosmology and anthropology, where he wrote papers under different pseudonyms.