Tl; dr: When on vacation, women are more likely to experiment sexually and have one-night stands.
According to a press release on the study, women experience an “altered sense of reality [...] that encourages sexual risk-taking while minimizing perceptions of risk and long-term consequences”.
Basically, inhibitions are low, blood alcohol high, and women are going to leave you and everything else behind when they get back to their real lives anyway.
Interestingly, research found backpackers to be especially promiscuous, as “sexual activities perceived by women as unconventional and adventurous – such as casual sex – comprise an integral part of the adventurous ethos of the backpacking experience”.
Now might be a good time to invest in a new backpack.
The study’s primary purpose, however, is to shed light on the risks of casual sex, to address the sense of invincibility women display when engaging in it, and how this sort of risk-taking can empower women.