Men appear to get greater satisfaction than women when witnessing retribution, research suggests.
Scientists monitored brain activity in people while they watched someone they either liked or disliked apparently suffering pain.
While women showed signs of empathy with people they both liked and disliked, men appeared to enjoy pain being inflicted on their foes.
The study, by University College London, is published in Nature.
This investigation would seem to indicate there is a predominant role for men in maintaining justice and issuing punishment
Dr Tania Singer
A series of tests was undertaken involving 32 male and female volunteers.
They were joined by four actors whose true identity was kept secret from the rest of the group.
In the first part of the experiment, the volunteers played a monetary investment game.
During this session, the actors established themselves as either likeable by playing fair, or unlikeable by holding on to money unfairly.
Electric shocks
Next, the actors apparently received mild electric shocks while the volunteers were monitored for their responses.
When the "fair" players were shocked, both female and male volunteers showed increased activity in the pain-related centres of the pain - the fronto-insular and anterior cingulate cortices.
When the "unfair" actor received a shock, the women taking part in the experiment showed a similar empathy with them.
In contrast, the male volunteers showed no increased activity in the empathy-related pain areas.
They did, however, show a surge of activity in the reward centre of the brain - the nucleus accumbens.
The researchers noted that the volunteers tended to avoid people who had cheated them, and their antipathy was confirmed by questionnaire responses.
'Sense of justice'
Lead researcher Dr Tania Singer said: "Men expressed more desire for revenge and seemed to feel satisfaction when unfair people were given what they perceived as deserved physical punishment.
"This type of behaviour has probably been crucial in the evolution of society as the majority of people in a group are motivated to punish those who cheat on the rest.
"This altruistic behaviour means that people tend to protect each other against being exploited by society's free-loaders, and evolution has probably seeded this sense of justice and moral duty into our brains."
Dr Singer said it was possible that men reacted more sharply because the punishment being meted out was physical, rather than psychological or financial."
However, she said: "This investigation would seem to indicate there is a predominant role for men in maintaining justice and issuing punishment."
Dr Colin Wilson, a neuropsychologist at Belfast's Green Park Healthcare Trust, said the findings were interesting - but much more work would be needed before one could conclude that there were profound differences between the sexes.
He said: "It might be that women tend to have more reflective, thoughtful responses, and are less likely to make quick, punitive judgements.
"But what would be really interesting would be if the same findings were found if the punishment was a social insult or a put down, rather than physical."
This has it's origin in our more primal days, a shade of instinct still imprinted in the human mind.
The males from all primate/ape/human species have allways been the more suitable of the 2 genders when it comes to hunting, a need to be fulfilled as most of those are omnivores and so do eat meat.
The males have larger lungs, bigger and stronger muscles and a faster bloodflow, so more stamina and strength.
Nature has it's way in making a species do what it's supposed to do, and it's by rewarding it. So concerning the hunt for flesh, the male brain releases hormones and adrenaline to interest and motivate the body in capturing the prey in sight. To maintain this process, extra endorphins are released from the brain when the prey is killed; bringing a certain euphory to the hunter; a reward motivating him in hunting again.
Some of this still is active in the current human brain, giving the males a sort of satisfying sensation when they witness or cause a victim/competitor to bite the dust.
"If your life is such that you're placing all your hopes in a politician, then may I humbly suggest you get yourself a crate of superlager and a cardboard box and stop wasting everyone's time''
I don't know about all this. I've seen some women who will go to greater lengths than you could imagine to get revenge. However, it's true that I've never seen one get as much pleasure as I have in getting revenge.
I've seen women go to such great lengths to get revenge, watch their plans play out to perfection, and then...just like a woman...feel bad about it afterwards.
I think that's where the difference is, that the women want it more, and then get it and feel bad about it. Men are just less sympathetic.
i know its sadistic but seing someone i hate getting something they hate done to them makes my day. i know its not right, but i'm not the most amazingly moralistic person to begin with
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male revenge
Jan 20th, 2006 11:57 AM
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