The secret is out. If we observe men putting their best foot forward, with impeccable behavior and manners, there is probably inspiration round the corner in the form of attractive women.
During the study, 65 men and 65 women aged about 21 years played a game which was about donating to a group fund.
The study found that men began to donate much more when they were watched or observed by an attractive woman, while male attractiveness did not seem to influence women to such a great extent - they seemed to donate the same amount no matter who was watching them.
"The research shows that good deeds among men increase when presented with an opportunity to copulate," said Dr Wendy Iredale of Sheffield Hallam University.