When a woman is more attractive, a man is less likely to intend to use a condom during sex with her, a new study finds.

Previous research has suggested that there is a link between perceived attractiveness and a person’s willingness to have unprotected sex, the
researchers, led by Anastasia Eleftheriou, a graduate student in computer science at the University of Southampton in England, wrote in the
new study. Eleftheriou’s research focuses on using computer simulations to study and influence attitudes towards sexual behavior.

One earlier study of women, for example, found that the more attractive they considered a man to be, the more willing they would be to have
unprotected sex with that man. This was true even though the women believed that attractive men were more likely than less attractive men to
have a sexually transmitted infection (STI). [10 Things Every Woman Should Know About a Man’s Brain]

In the new study, the researchers focused on men. Fifty-one heterosexual men completed a survey in which they were asked to rate the
attractiveness of 20 women in photographs on a scale from 0 to 100. For each woman, the men were asked to indicate, also on a scale of 0 to
100, how likely they would be to have sex with the woman if given the opportunity, and how likely they would be to use a condom, the study
said. The researchers also asked the men to estimate how many men like themselves out of 100 would have unprotected sex with the woman if
given the opportunity. Finally, the men were asked to indicate on a scale of 0 to 100 how likely it was that the woman in the photo had an STI.