Optical illusions are mind-bending images that challenge our perception and visual skills. These illusions provide deep insights into how our brain processes such complex visual information. Optical ...

A simple visual test is surprisingly accurate at predicting IQ, according to new research. The study, published today (May 23) in the journal Current Biology, found that people's ability to ...

Intelligence quotient, usually shortened to IQ, is a measure of how well someone uses information, logic, and reasoning compared to their peers. The first test for measuring IQ was developed by ...