Evolution does not favour selfish people, according to new research.
This challenges a previous theory which suggested it was preferable to put yourself first.
Instead, it pays to be co-operative, shown in a model of "the prisoner's dilemma", a scenario of game theory - the study of strategic decision-making.
Published in Nature Communications, the team says their work shows that exhibiting only selfish traits would have made us go extinct.
Evolutionary instability of zero-determinant strategies demonstrates that winning is not everything http://www.nature.com/ncomms/2013/13...comms3193.html