ChefChiTown
The secret ingredient? MY BALLS
but what does it have to do with sexual exclusivity?
Well, here's my opinion on it...
According to the study, people with higher IQs tend to go against the grain when it comes to evolutionary trends. Instead of following along with what we believe to be our predetermined way of life, people with higher IQs tend to go against the grain and think for themselves.
What does that have to do with sexual exclusivity? Well, instead of going around town and spreading their seed, like society would like to make us believe is the "human" thing to do, people with higher IQs come to their OWN conclusions about sex and don't just blindly follow along with what everybody else is doing. So, they probably tend to have a higher amount of respect towards sex and everything that comes along with it, causing them to not be so promiscuous.
That's my take on it anyway.