Be nice. Evolution will punish you if you’re mean and selfish, says study
Selfish people have short-term advantage, but co-operation and communication win out in the long term
Friday 02 August 2013
New research has challenged the notion that evolution favours self-interest above co-operation, suggesting instead that selfish individuals eventually ‘compete each other out of existence’.
The study, published in the journal Nature, used models of evolutionary game theory (EGT) to show how co-operative populations are more successful than selfish ones in the long run.
Researchers used computers to play through vast numbers of “games” simulating scenarios of co-operation and betrayal. By tweaking the strategies of the virtual players they were then able to compare which behaviours resulted in survival.
The study pitched players following so-called “zero determinant” strategies (those who acted selfishly) against others taking more benevolent approaches. While the selfish strategists enjoyed a brief advantage, opponents eventually came to recognise and overcome selfish individuals.
“Communication is critical for cooperation – we think communication is the reason co-operation occurs,” said Christoph Adami, a professor at Michigan State University and the lead author of the paper. “In an evolutionary setting, with populations of strategies, you need extra information to distinguish each other.
“We found evolution will punish you if you’re selfish and mean. For a short time and against a specific set of opponents, some selfish organisms may come out ahead. But selfishness isn’t evolutionarily sustainable.”
Much of what we understand about the working of selfish and selfless behaviour in society comes from game theory, a branch of mathematics concerned with decision making. It was developed throughout the middle of the 20th century but came to prominence first through the works of John Nash and then as a guiding political ideology during the cold war.
One of game theory’s most infamous studies is the “prisoner’s dilemma”, a hypothetical scenario where two prisoners are offered their freedom if they inform on the other. Under Nash’s explanation it seemed to show that individuals should pursue their own interests because they cannot predict how others will act.
The problem with such examples is that they are abstract and theoretical – they don’t take into account the many nuances of real-world scenarios where individuals have the opportunity to gauge how trustworthy others are, discuss their options, and also evaluate other people’s past behaviour.
Despite the apparent humane message of the findings of the new research, they do not contradict the concept of the “selfish gene” – the theory that living organisms exist only to propagate their genetic material.
Instead, the findings may complement it, as co-operative behaviour benefits whole species and thus the existence of a wider gene pool. Co-operation within a group does not preclude selfishness outside of it.
A cautionary tale for ambitious would-be authors
X Factor judge will appear in court later this month
Sir Ian McKellen hits back at Damian Lewis' 'fruity' claims
Ja Rule forced to deny leaving wife for prison cell mate
Gurdwaras-turned-food banks: Sikh temples are catering for rise in Britain’s hungry
Teenage girl convicted of robbery after taking pre-crime selfie wielding knife
'I'm experiencing austerity as well', says Princess Michael of Kent
- 1 Gurdwaras-turned-food banks: Sikh temples are catering for rise in Britain’s hungry
- 2 Exercise most effective lifestyle choice for preventing dementia, researchers say
- 3 Teenage girl convicted of robbery after taking pre-crime selfie wielding knife
- 4 Newly vegan Beyoncé wears fox fur to dine in meat free restaurant
- 5 'I'm experiencing austerity as well', says Princess Michael of Kent
- < Previous
- Next >
£30000 - £45000 per annum + Benefits: Harrington Starr: C# .NET Server Side De...
£60000 - £70000 per annum + Benefits: Harrington Starr: Senior QA Engineer Tes...
£40000 - £55000 per annum + Benefits : Harrington Starr: C# .NET Developer (P...
£44000 - £55000 per annum + Excellent Benefits: Pro-Recruitment Group: Confide...