An optical illusion is a fascinating visual trick that plays with the way our brain and eyes work together. Sometimes, what ...

An optical illusion is a riddle where the viewer perceives the image differently. These illusions come in a variety of types, ...

Official Mensa IQ Test Free, Accurate, International 2025! Try the Mensa IQ Quiz online with instant results and advanced ...

The chatbot was the ideal test taker—it exhibited no trace of test anxiety, poor concentration or lack of effort. And what about that IQ score?

There are four people in the picture. One of them is not safe. Can you find it in 4 seconds? Test your intelligence now!

Test your IQ with this brain teaser! Spot the odd letter hidden among the 'B' sequence in just 11 seconds. A fun and ...

ChatGPT took the Wechsler Adult Intelligent Scale (WAIS) IQ test and scored higher than 99.9% of human test takers.

Faxon's test question Imagine two 10 foot putts, one directly downhill and the other directly uphill. The question you need to answer is which of these two putts will come to a complete stop first.

IQ scores have decreased in the US for the first time in decades, new research from scientists at Northwestern University and the University of Oregon suggests.

Performance on cognitive tests does improve with practice. For example, a study found that just taking a common nonverbal reasoning test twice increases scores by roughly the equivalent of eight ...