Ever since it was published in 1892, the rabbit-duck illusion has been perplexing viewers with its remarkable ability to shapeshift. Does it show a rabbit and then a duck, a duck and then a rabbit, ...

This optical illusion explains how our eyes and brain together interpret what we observe. Yet at times, they become somewhat confused, and that’s when the real trick starts. If you see the duck, you ...

Ambigous figures are drawings that seem to flip from being one thing to another. Psychologists Melissa Allen and Alison Chambers recently showed these images to teenagers with autism in an attempt to ...

It’s a venerable optical illusion, one of my favorites: look at it one way and it’s a rabbit, look another and it’s a duck. Here some crafty taxidermist has recreated the effect in real life; although ...

Is this a rabbit or a duck? The answer you give to this classic optical illusion says a lot about your brain, psychologists claim. It first appeared in a German magazine in 1892 under the title ...