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Dr. Justin J. Lehmiller Posted on Friday, May 17, 2013 at 6:01AM 
Every Friday on the blog, I answer people’s questions about sex, love, and relationships. This week’s question comes from a reader who wanted to know the best sexual position for heterosexual couples.
What is the best position for penile-vaginal intercourse?
Dr. Justin J. Lehmiller Posted on Friday, May 3, 2013 at 6:01AM “The issue is that continued exposure can cause long-term or even life-long neuroplastic change in the brain.” - ASAP Science on pornography addiction
This intriguing ASAP Science video explores some of the neurobiological research into pornography addiction. Although ASAP generally does a great job with their videos and this one makes some interesting and perfectly valid points, I'm not fully convinced by some of its claims.
Dr. Justin J. Lehmiller Posted on Friday, April 26, 2013 at 6:00AM 
Every Friday on the blog, I answer people’s questions about sex, love, and relationships. This week’s question comes from a reader who wanted to know whether faking orgasms is something unique to women, or if guys do it too.
I had a rather lively conversation with some of my friends the other day about faking orgasms, with the general focus being the myth that men don't or can't fake orgasms. The conversation I had seemed to suggest that faking orgasms is not all that uncommon among men since everyone seemed to have at least one experience doing it, but obviously that is just my group of friends. So is faking orgasms a common experience for men?
Dr. Justin J. Lehmiller Posted on Friday, April 12, 2013 at 3:00AM 
A new study examining women’s perceptions of penis size has been making the rounds in the media lately with headlines ranging from “Science Proves Women Like Men with Bigger Penises,” to “This Just In: Women Prefer Well-Endowed Men,” to “Science Proves Women Love a Big ‘Ol D.” Based upon these and dozens of other international headlines, one might reasonably conclude that the age-old question “Does size really matter?” has been settled once and for all. So women who are attracted to men are looking for guys with humongous penises because a bigger penis makes for better sex, right? Not so fast. The reality is that these headlines don't tell the whole story, and this study says nothing about whether penis size affects female sexual pleasure.
Dr. Justin J. Lehmiller Posted on Friday, March 22, 2013 at 6:00AM 
Every Friday on the blog, I answer people’s questions about sex, love, and relationships. This week’s question comes from a reader who wanted to know why some women enjoy deep penetration during vaginal intercourse more than others.
Why is deeper better for a lot of women when the most sensitive parts of the vagina are on the outside and close to the labia and clitoris?
Dr. Justin J. Lehmiller Posted on Friday, March 8, 2013 at 6:00AM 
Every Friday on the blog, I answer people’s questions about sex, love, and relationships. This week’s question comes from a reader who wanted to know more about whether it is truly possible for women to have several orgasms in a row.
Can a woman really orgasm over 20 times in a sexual encounter, or is she just lying?
Dr. Justin J. Lehmiller Posted on Friday, March 1, 2013 at 6:01AM 
Every Friday on the blog, I answer people’s questions about sex, love, and relationships. This week’s question comes from a reader who wanted to know more about the relationship between G-Spot and clitoral orgasms.
I know that some women can only experience clitoral orgasm but not G Spot orgasm. I was curious to know if there are many cases of women who are able to have G Spot orgasms but are incapable of orgasming through clitoral stimulation. I'm sure there are a few cases but are these the exception to the rule or is it quite variable?
Dr. Justin J. Lehmiller Posted on Friday, February 1, 2013 at 6:00AM 
Every Friday on the blog, I answer people’s questions about sex, love, and relationships. This week’s question comes from a reader who wanted to know more about the topic of female orgasm:
I often see statistics that indicate 50% of women can't orgasm or 75% can't orgasm from penetration alone. Can you point me to the sources of said statistics and could you explain what exactly "penetration alone" means?
Dr. Justin J. Lehmiller Posted on Monday, January 28, 2013 at 6:00AM 
One of the most common concerns people have about condoms is that they may reduce genital sensations, thereby making sexual intercourse less pleasurable. In fact, these fears about reduced sensitivity are one of the most frequently reported reasons people give for not using condoms consistently.1 So does using condoms truly put a damper on sexual satisfaction? According to a new study published in The Journal of Sexual Medicine, people report that sex feels just as good regardless of whether a condom is used.
Dr. Justin J. Lehmiller Posted on Wednesday, January 16, 2013 at 6:00AM 
When it comes to making noise in the bedroom, some people prefer silence, while others prefer to wake the neighbors. Although the noisy type are more likely to be on the receiving end of a late-night complaint to the police, a growing amount of research suggests that this may be a small price to pay for a more intense and satisfying sex life. Indeed, scientists have found that sexual noises may enhance pleasure in a number of ways.
Dr. Justin J. Lehmiller Posted on Saturday, December 22, 2012 at 6:00AM 
The Psychology of Human Sexuality blog made its debut exactly one year ago today and has grown and changed in ways I could not even begin to imagine when it started. My initial plan was to update the blog just once per week with some commentary on recent sex studies. However, there was far more demand for responsible, science-based information about sex than I thought. Plus, it turns out that writing about sex is pretty fun (who knew, right?). I have gone from posting once per week to 3-4 weekly entries that vary in focus, ranging from question and answer, to media fact checks, to videos, to book reviews, to highlights of cutting-edge research.
I can’t thank you all enough for reading the blog, sharing the stories, submitting your questions, and weighing in with your perspectives. The Psychology of Human Sexuality has quickly become the most rewarding aspect of my job and it’s all because of you. I hope you’re looking forward to another year of great sex as much as I am! In the meantime, here are some fun facts and statistics about the site I’ve complied for your reading pleasure. Enjoy!
Dr. Justin J. Lehmiller Posted on Monday, December 10, 2012 at 6:01AM 
One of the most common questions I get asked is whether too much sex or masturbation is bad for you. As I have written in previous posts, there is simply no evidence that having a high frequency of sexual activity will hurt you, unless you are doing it so much that it is causing you to miss work and/or it prevents you from having a social life (both of which are extremely rare problems to have). The reality is that having sex on a regular basis may actually be good for you. In fact, several studies have suggested that reaching orgasm more often might make you both smarter and healthier.
Dr. Justin J. Lehmiller Posted on Friday, December 7, 2012 at 6:01AM 
Some women have a more difficult time reaching orgasm than others during sexual intercourse. As a result, sexual scientists have begun looking for biological markers associated with a greater likelihood of orgasm in an attempt to better understand the origins of female sexual pleasure. One such marker appears to be the distance between a woman’s clitoris and vaginal opening. Research has found that the closer the clitoris sits to the vaginal opening, the greater the odds a woman will reach orgasm during sex. This makes sense, given that such placement probably allows a greater degree of clitoral stimulation. However, scientists have found some other less obvious markers of female orgasm, and one of those features resides on a woman’s face.
Dr. Justin J. Lehmiller Posted on Friday, November 30, 2012 at 6:00AM 
In this TED talk, author Mary Roach describes ten facts about orgasm. Although these facts are somewhat obscure and won’t necessarily impact your own sex life one way or another, they will certainly entertain you and perhaps even make for some great cocktail party conversation! Among the many fascinating topics addressed is the idea that genital stimulation is not necessary to produce orgasm. In fact, Roach details cases of people who can bring themselves to orgasm through activities as mundane as touching their eyebrows and brushing their teeth.
Other topics include “in-utero masturbation” (yes, you read that right), the possibility of orgasm after death, and the fact that “the big o” can cure chronic cases of hiccupping (no need to hold your breath or breathe into a paper bag anymore!). As is that weren't enough, you will also learn my new favorite sex fact: “Cheese crumbs spread before a pair of copulating rats will distract the female, but not the male.” Sometimes I wonder why scientists study anything other than sex…
Dr. Justin J. Lehmiller Posted on Thursday, November 22, 2012 at 6:01AM 
I know you all are thankful for lots of things today, but let’s not forget to be thankful for sex! Research has found that sex offers numerous benefits, both physical and psychological. In this post, I will highlight just 5, but there are certainly many, many others. So instead of just indulging in food today, consider indulging with your partner too. And remember that sex is a great way to burn off all of that turkey and pie!
