According to Ph.D. student Robb Willer, men have a tendency to change their opinion if they are told that their opinion ‘is feminine’. Men who were told that they had given ‘feminine’ answers to a test “changed their opinion to be more homophobic, stronger support for the Irak war and a tendency to buy gas-hungry SUVs.” (And for the ‘feminine’ readers, that’s a Sports Utility Vehicle.) Women, on the other hand, did not have the same tendency to change their opinion, neither if they were described as feminine nor masculine.

Finally, the solution on how to win an argument with a man? :)
(Via Usikre menn velger krig og bensinslukere - Dagbladet.no)