Is he trustworthy? Forget what the songs say about his kiss, and check out the breadth of his cheekbones.

Men with wider faces are not only perceived as untrustworthy, they may deserve the reputation, according to a new study published in the journal Psychological Science.

In a computerized game, broad-faced men were more likely to exploit others for personal monetary gain, explained lead researcher Michael Stirrat of the University of St. Andrews in Scotland. And other players expected this behavior. (…)

Other experiments have shown that men with wider faces tend to be more aggressive — broad-faced hockey players spend more time in the penalty box, for example — and are perhaps more dominant. They are also more likely to use aggression for altruistic means by, say, attempting to punish people who steal or break other societal rules.

http://www.livescience.com/6169-guy-trustworthy.html