Dominique de Quarvain has done some really interesting work on the neuroscience of revenge and how much hard cash people will lay out to get it. He and Tania Singer have done various on the “Trust Game” scenarios and watched the live MRI images of subjects as the contemplated revenge and turned off their empathic urges… at least men turn off the empathy. Which is what the “difference feminists” have been saying for decades.
Link: http://www.sciencemag.org/content/305/5688/1254.short (sent via Shareaholic)
FYI here is one of the most extreme examples of revenge every captured on video