Some of you must have stopped looking at it, thinking, “Where’s the debate? It’s clearly a rabbit,” while for others, “It’s clearly a duck.” This is a classic example of a 6 for you, which may be a 9 ...

Optical illusions have a playful power: they trick our eyes, tease our brains, and make us question what we think we see. But some illusions do more than confuse—they offer a small window into how you ...

Psychologists have long used ambiguous images like this to study perception and cognition. In one controlled study, participants who could toggle between the rabbit and the duck without effort tended ...