According to Guinness World Records, the current IQ record is 228, belonging to Marlene from the United States, who is nearly 60 years old. This result was obtained by a test when she was 10 years old. The test showed that her mental age reached 22.8. According to the IQ calculation method of the Children's Intelligence Scale: Mental age/actual age*100 is the IQ of a child under 16 years old: 22.8/10*100=228. Some data may be written rashly. Approximately 230. Of course, you need to know that in current intelligence tests, people’s IQ has two limits: 0-200. As for why there are people with IQs exceeding 200, it is because of different standards. Marlene was I am still a child, so I use that kind of scale and calculation method to calculate. Of course, the 0-200 we have below is for people above 16. Please understand. Most people are between 10-190. I will give you an IQ data representation below: 90-110 is normal. < 70 Insufficient intelligence 70-80 Insufficient borderline intelligence 80-90 Retarded 90-110 Moderate intelligence 110-120 Smart 120-130 Excellent > 130 Excellent talent From: "Introduction to Psychology - Intelligence" - Ratio IQ. Of course, some scientists also have After studying the works of historical celebrities in the past, we came to the conclusion: Einstein: 160 Leonardo da Vinci: more than 200 Goethe: more than 300 These are different, that is to say, simply speaking, different measurement labels lead to different results. Nowadays people use the scale I gave above. .. After answering, if you are satisfied with my answer, please don't be stingy and select my answer as the best. Thank you