Dr. Justin Lehmiller received his Ph.D. in Social Psychology from Purdue University. He is a Research Fellow at The Kinsey Institute and author of the book Tell Me What You Want: The Science of Sexual Desire and How It Can Help You Improve Your Sex Life. Dr. Lehmiller is an award-winning educator, having been honored three times with the Certificate of Teaching Excellence from Harvard University, where he taught for several years.
September 2, 2026 by Emily Mendelson
Last week in my sexual communication class, I asked my students what their most impactful source of sexual education is when it comes to learning about sex and sexuality. Some students discussed conversations they had with their parents, others mentioned specific television shows like Glee or Degrassi, and a few of them described being exposed...
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August 26, 2026 by Justin Lehmiller
Consensual non-monogamy (CNM) is fairly common, with about 1 in 5 adults saying they’ve been in some type of sexually open relationship. Interest in CNM also appears to be on the...
Dating & Relationships
August 19, 2026 by Emily Mendelson
When we think about the purpose of sexual consent, especially affirmative consent, we tend to think of it as something that prevents violence. Indeed, the purpose of sexual consent —...
Dating & Relationships, Safe Sex
August 16, 2026 by Justin Lehmiller
Sex and Psychology was founded with the goal of sharing the science of sex and relationships in a way that is informative, engaging, and accessible. Most of us never received...
Uncategorized
August 12, 2026 by Justin Lehmiller
Think about your exes for a moment. Do they all seem completely different to you, or do they share certain traits? The idea that people have a romantic “type” is...
Dating & Relationships, Myth vs Fact
August 5, 2026 by Emily Mendelson
Originating in Brazil, August 8th is celebrated as International Female Orgasm Day. The purpose of this day is to recognize that women’s orgams—and their overall sexual pleasure—are just as important...
Psychology, Sex Ed
July 30, 2026 by Merissa Prine-Munroe
Did you know that July 31 is National Orgasm Day? For many people, orgasm is treated as the ultimate measure of sexual success. It’s often seen as the line that...
Sex Ed, Sex Tips
Discover what the largest survey of sexual fantasies in America tells us about the erotic mind – and how to have a healthier, hotter sex life.
Take a deep dive into the psychology of sex and relationships. This is the sex ed you never got in school – and won’t get anywhere else.
