Visual illusions play tricks with the human brain and test your attentiveness. In today’s visual illusion IQ test, the ...

ChatGPT is the first nonhuman subject I have ever tested. In my work as a clinical psychologist, I assess the cognitive skills of human patients using standardized intelligence tests. So I was ...

A brain teaser is a short, playful puzzle designed to stretch your mind and make you smile. It could be a riddle, a tricky question, a visual illusion, or a logic twist that nudges you to think beyond ...

In the aftermath of World War 2, American soldiers were stationed in Germany, where some inevitably found wives. Black GIs who did so provided the basis of the Eyferth study, which compared 170 ...