Generosity of men

Men become more charitable in the presence of pretty women, say a group of psychologists.However women are not influenced by who they were with and showed little change.This is the finding of oxford university professors.The men use acts of generosity as a way of appealing to females they were attracted with.Also women are attracted to generous men.They seem to like heroic men.The scientists found that men donate to charity 50-100% of their earnings when a women was in the room and are more generous when they are being watched by attractive woman.When they are with a man they donate less than 40 percent.Whereas a women donates 40 percent regardless of who they are with.