an ongoing debate in the sexual science community, but researchers from the
University of Texas say the answer is
simple: Guys are just hornier.
Compared to women, men had a much harder time rejecting photographs of attractive members of the opposite sex- even when they were instructed to do so, the research shows. Follow-up tests found guys have just as much self-control as women, but their impulse to accept sexy
partners is nearly four times stronger.
All the old evolutionary arguments help explain these differences, says study coauthor Paul Eastwick, Ph.D. Because sex could lead to pregnancy and labor- burdens that fall on the female-women evolved to be more selective about who they sleep with. Eastwick says society's acceptance of men's dalliances (but not women's) may also have shaped the strength of a guy's sexual impulses. As a result, dozens of studies have confirmed
that men fool around more than women.