The men were much more likely to take blackjack risks if they were sexually motivated and had seen images of beautiful women before they played. The guys were also more likely to take risks if they saw attractive female faces and remembered them afterwards — even if they weren’t looking for a new partner — perhaps because the faces made more of an impression on them and ramped up their sexual desire. The behavior of the female students, however, wasn’t affected by what they felt, saw, or remembered.

“The bottom line is that risk-taking can be a tool that men use to show potential mates that they have desirable qualities such as confidence or ambition,” said study co-author Michael Baker, a doctoral student in social psychology at Florida State.