Men More Likely To Lie About How Many Sexual Partners They've Had

There was a joke in the movie American Pie 2 about how men and women lie about how many people they've slept with. Men pad their numbers while women divide their conquests by three. And a new study published in the Journal of Sex Research found that this joke is actually true.

Researchers from the University of Glasgow used data from 15,000 people, aged 17 to 74, that focused on questions about their past sexual partners. Men reported that they had way more sexual partners than women had reported, and the team wondered--why is there such a discrepancy?

"In a closed population and defined time period, the mean number of opposite-sex partners reported by men and women should be equal. However, in all surveys, men report more partners. This inconsistency is pivotal to debate about the reliability of self-reported sexual behavior," the researchers stated in their abstract.

The researchers figured that men rounded up in reporting their sexual histories, but women were more exact. Another theory for the gap was that men perhaps really did have more sex partners than women, and this could be because of their lax attitudes towards affairs or cheating.

But whatever the reason, men on average claim to have more bed partners, on average 14 compared to women's 7.