SPOTTING the light brown dog is easy, but can you outsmart everyone and find the second pooch hidden in this optical illusion ...

Optical illusions challenge our brains, making us perceive things differently. Readers are given five seconds to find the ...

Optical illusions have fascinated and mystified humans for centuries. These amazing visual illusions play tricks on our ...

In this optical illusion picture, a cat is hiding in plain sight. Do you have the most attentive eyes that can spot the cat ...

This paw-some puzzle is bound to get you racking your brains – as only those with extremely good vision and a high IQ can ...

This optical illusion personality test reveals your hidden strengths based on the element you notice first—fire, earth, or ...

An optical illusion is a visual phenomenon where the brain perceives an image differently from how it physically exists.

According to current theories of expertise, this shouldn’t happen. Becoming an expert in chess, for example, makes you better ...

Brain teasers come in many forms—some test your mathematical skills, others are age-related puzzles, and then there are ...

Medical imaging experts are adept at solving common optical illusions, according to research from four UK universities, ...