What is the highest IQ?

The highest IQ recorded in human history is between 205 and 300.

The person with the highest IQ is American mathematician william james Sidious (IQ 300). He was born in 1898 and died in 1944. He is a tragic genius with an IQ of 250-300! William james Sidious's parents are also very smart people. His father, Boris Sidious, studied psychology and philosophy at Harvard University and obtained four degrees. His mother is a doctor of medicine.

William james Sidious was very clever when he was a child. He spoke French at the age of four, gave a lecture on four-dimensional space at Harvard at the age of nine, and became a professor of mathematics at the age of 16. However, a child prodigy mentioned in China's Shang Yi article, although he became famous very early, is also called a genius in the world, but he has not made corresponding achievements in adulthood. William james Sidious was withdrawn, and finally he was down and out, and died of a cerebral hemorrhage.

Marilyn Savan is regarded as the person with the highest IQ in the world today. According to Guinness World Records, her IQ is as high as 228. Marilyn Savan is quite clever and precocious. At the age of ten, intelligence tests showed that his mental age was 22 years old 10 months, from which his IQ was as high as 228. But she didn't get any results consistent with IQ, on the contrary, she was much better than the person who ranked first.