Friday, October 16, 2009
Tuesday, October 13, 2009
Thursday, September 17, 2009
Friday, September 04, 2009
An interesting study.
Want cooperation? Rewarding the helpful can be more effective than punishing wrongdoers, a new experiment in game theory suggests.
In the public goods game, players choose whether or not to contribute money to a common pot. The pot is multiplied and redistributed equally, regardless of who contributes and who doesn't. When people play a pure version of the game, the temptation to freeload – reap the rewards without contributing anything – often leads to rapidly disintegrating cooperation.
Previous research found that cooperation is promoted by allowing players to punish freeloaders: cooperative players would pay a small cost that enables them to inflict a loss on the offender. This approach was more effective than reward, at least in games where players switch partners every round.
More carrot, less stick
David Rand and his colleagues at Harvard University modified the public goods game to reflect what they argue is a more natural scenario: people play with the same group for many rounds, establishing reputations with each other.
Players could choose to reward or punish others at a small cost to themselves. Rand found that rewarding or punishing were equally likely to lead to cooperation and higher earnings, but when players had the option to either punish or reward, but chose to reward, they received higher absolute payoffs. "It becomes in one's self-interest to help the group," says Rand.
"It's sort of a 'you scratch the group's back and I'll scratch yours'," he says.
In the public goods game, players choose whether or not to contribute money to a common pot. The pot is multiplied and redistributed equally, regardless of who contributes and who doesn't. When people play a pure version of the game, the temptation to freeload – reap the rewards without contributing anything – often leads to rapidly disintegrating cooperation.
Previous research found that cooperation is promoted by allowing players to punish freeloaders: cooperative players would pay a small cost that enables them to inflict a loss on the offender. This approach was more effective than reward, at least in games where players switch partners every round.
More carrot, less stick
David Rand and his colleagues at Harvard University modified the public goods game to reflect what they argue is a more natural scenario: people play with the same group for many rounds, establishing reputations with each other.
Players could choose to reward or punish others at a small cost to themselves. Rand found that rewarding or punishing were equally likely to lead to cooperation and higher earnings, but when players had the option to either punish or reward, but chose to reward, they received higher absolute payoffs. "It becomes in one's self-interest to help the group," says Rand.
"It's sort of a 'you scratch the group's back and I'll scratch yours'," he says.
Thursday, August 20, 2009
Would voting against rather than for people be more representative?
If you were able to vote against people who you didn't want to represent you(i.e. leaving the rest as people you are ok with), rather than for someone would it result in a better government?
Thursday, July 23, 2009
BBC lies
http://newsvote.bbc.co.uk/1/hi/health/8163930.stm
Flu infects 100,000 in past week
with Death Toll 26
Means that
http://newsvote.bbc.co.uk/1/hi/health/8159488.stm
Swine flu: how the numbers add up
0.1 - 0.35%
is a massive over-exaggeration.
100,000 infected in a week, yet 26 dead over two months means that one of the articles is spouting nonsense as the death rate has to be lower than 0.026%.
Flu infects 100,000 in past week
with Death Toll 26
Means that
http://newsvote.bbc.co.uk/1/hi/health/8159488.stm
Swine flu: how the numbers add up
0.1 - 0.35%
is a massive over-exaggeration.
100,000 infected in a week, yet 26 dead over two months means that one of the articles is spouting nonsense as the death rate has to be lower than 0.026%.
Friday, June 19, 2009
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