Humans Are 'Rock-Paper-Scissors' Copycats (VIDEO)

07/21/2011 12:02 pm ET | Updated Sep 20, 2011

New research from a British university shows that it's hard for humans to avoid imitating each other - even when playing a game of rock-paper-scissors.

Scientists found that players of the game subconsciously imitate their opponents' handshakes - resulting in a disproportionate number of games ending in a draw.