Casual Sex: On this week’s Dr. Z show! – DrZhana

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Casual Sex: On this week’s Dr. Z show!

Hi everyone,

Here’s a recap of what we talked about on this week’s Legit Sex Science Show on Periscope and Facebook Live (Tuesdays, 11am-1pm New York time), with info and links to all the sex research studies and sex products we discussed. And if you’d rather watch Dr. Zhana than read here, the Periscope replay is at the bottom of this blog post! Make sure you follow Dr. Zhana on Periscope (@DrZhana) or Facebook (@ZhanaVrangalova).


The Sex Lives of College Students

  • Is hooking up replacing dating on college campus? A new longitudinal study with a sample of over 22,000 college students from 22 U.S. colleges and universities sought to find out.
  • Results from this study showed that from 2005 to 2011, rates of both behaviors were identical, suggesting that casual sex is NOT replacing dating.
  • Furthermore, although men were more likely than women to have dated and hooked up and less likely to have formed a long-term relationship, they were also more likely to wish there were more opportunities to form long-term relationships.
  • The takeaway? College students are dating as much as they ever have–and having casual sex just as much too–so contrary to popular belief, hook-up apps like Tinder do not symbolize the end of romance!

Kuperberg, A. & Padgett, J. E., 2015. The role of culture in explaining college students’ selection into hookups, dates, and long-term romantic relationships. Journal of Social and Personal Relationships.


Would You Date Someone “With a Past”?

  • In this study, 190 college students (age range 18-35) were asked about their willingness to engage in a relationship (either short-term or long-term) with a mate who had had a particular number of sexual partners, ranging from 0 to 60+.
  • Not surprisingly, people’s willingness to date the potential mate depended on their number of previous partners:
    • As the mate’s number of partners increased from 0, people’s willingness to date them also increased–but only up to a point, of about 2-3 partners. Beyond that, people’s interest in engaging in a relationship with that mate sharply decreased, suggesting there’s a u-shaped relationship between people’s number of past partners and their dating appeal.
    • However, people who had had more partners themselves were more tolerant of a potential mate’s promiscuity, though their willingness to engage in a relationship decreased around 8 or so partners.
    • Finally, results also showed that in terms of relationship duration, men were more willing to have a short-term relationship with a mate who’d had multiple partners than women were.
    • However, there were NO gender differences when it came to a long-term relationship: men and women were equally disinterested in a long-term partner with a lot of partners.
  • The takeaway? People want mates with a bit of a past but not too much… though people with more experience are more tolerant of slutty mates.

Stewart Williams, S., Butler, C. A., & Thomas, A. G. (2016). Sexual history and present attractiveness: People want a mate with a bit of a past, but not too much. Journal of Sex Research. 1-9.


How Well Women Know Their Partner Matters for Orgasm

  • In this study, 10,000 women from 20 different colleges were asked how likely they were to have an orgasm with different types of male partners, long-term vs. short-term. Specifically, they were asked if they’d had an orgasm in their most recent hook-up or relationship sex.
  • Findings showed that the more a woman had had sex with her partner before, the more likely she was to have an orgasm with him:
    • In relationship sex, 76% of women had an orgasm
    • In hookup sex with someone they’d hooked up with 4 or more times, 34% of women had an orgasm
    • In hookup sex with someone they had never previously hooked up with, only 11% of women had an orgasm
  • These numbers include all types of hookups and sexual encounters, so not just PVI. Thus, these numbers aren’t exactly fair because PVI is more common in relationships, and it’s more likely to lead to orgasm than giving a blowjob, for example.
    • So, looking at encounters where it’s just intercourse, we find that 78% of men and 42% of women had an orgasm during most the recent hookup.
    • Some reasons for the orgasm dip during hookups? Drunkenness… not knowing what your partner likes.. insecurity, etc.!
  • The takeaway? The more often a woman has had sex with that person before, the more likely she is to have an orgasm.

Armstrong, E. A., England, P., & Fogarty, A. C. K. (2012). Accounting for women’s orgasm and sexual enjoyment in college hookups and relationships. American Sociological Review, 77, 435-462.



Sex Toys/Products Highlights

Dr. Zhana and Kenneth Play’s Pleasure Chest Adventure Kit:


My business partner Kenneth Play and I teamed up with The Pleasure Chest to make this awesome adventure kit! It’s super inexpensive–only $25–and includes everything you need for a successful hook-up. That includes:

  • 4 or 5 “fuck with this” high-quality latex condoms
  • Pleasure Chest water-based lube and my favorite silicone-based Uberlube
  • A battery-operated bullet vibrator (because clitoral vibrations are one of the most reliable paths to female pleasure). I don’t know about you, but I always have a bullet vibrator at the ready–you can keep it in your pocket! 😉
  • Before and after wipes for cleaning your toys and yourself
  • Toothbrush and toothpaste (for extra preparedness!)

Get the Adventure Kit now at or at my favorite sex store The Pleasure Chest with free shipping (to most countries) for all orders over $75! Or if you live in NYC, LA, or Chicago, check out one of their gorgeous stores and do some in-person shopping! They also have great sex education workshops you might want to check out.


Lelo Black Friday Discountz3

I also talked about a great Black Friday discount from the sex toy company Lelo, where you can get savings of up to 50% off! Starting today you can get an early bird special if you sign up here.

Lelo is one of my favorite companies because virtually all of their toys are made of high-quality silicone that is body safe and pleasant on your skin. Get all your sex toy shopping done now at and remember to use the DRZHANA discount code for 20% off and free shipping on all your purchases!



Audience Question

Can you use the “sniff test” to determine if someone has an STI?

Nope! Most STIs are asymptomatic, which means you can’t see any symptoms. So, just because someone doesn’t smell funny doesn’t mean she doesn’t have an STI–and vice-versa!


Until next time,

Dr. Zhana


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The Science of Sex Podcast

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