Revenge, brain study finds, is a male partiality

Not that we needed a scientific study to prove this, but here it is anyway. Men like revenge. Women are more empathetic. oooh big surprise.

"In the study, published online Wednesday by Nature, subjects witnessed people whom they perceived as wrongdoers getting zapped by a mild electrical shock. When male subjects saw this, their MRI scans lit up in primitive brain areas associated with reward; the brain's empathy centers remained dull. "