Our brain and eyes can play tricks on us—not least when it comes to the expanding hole illusion. A new computational model ...

Deep within the image, a tiny frog is camouflaged among the leaves. Only 1% can solve this tricky visual puzzle! This mind-challenging illusion tests your IQ, observation skills, and cognitive speed.

New research provides evidence that a pattern glare test can be used successfully to detect subclinical autism and schizotypy ...