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

An optical illusion is a riddle where the viewer perceives the image differently. These illusions come in a variety of types, such as puzzles, word riddles, jumbled words, hidden objects, crossing ...

Educational psychologist explains why many online IQ tests confuse evidence-based assessment with entertainment and ...