Mith Huang, Flickr (left) and Pelican, Flickr (right)

Chimps and Six-Year-Olds Want to Mete Out Punishment — Even If It Comes at a Cost

Experiments with chimpanzees and 4 to 6-year-old children show that members of both groups will make a personal sacrifice to see antisocial behavior punished.

Nature Human Behavior
Traditional "Punch and Judy" puppet shows, popular in Europe for centuries, have simple plots about justice and punishment that mirror those used in the recent study on children. | Jonathan Lucas, Wikimedia Commons
Emily Wroblewski, Flickr