Visual hand tricks rely on movement and timing, not strength. This video reveals nine tricks that anyone can learn. Each trick is explained clearly and step by step. No tools or props are required.

An illusion involving a hidden thumb confounds capuchin and squirrel monkeys for the same reason it does humans -- it misdirects expected outcomes of actions they can carry out. However, marmosets ...

Psychologists used a sleight-of-hand trick called the French drop, in which an object appears to vanish when a spectator assumes it is taken from one hand by the hidden thumb of the other hand. The ...