Psychology Courses / Course

Masters & Johnson's Study of Human Sexuality | Overview & Stages

Laura Huston, David White
  • Author
    Laura Huston

    Laura Huston has tutored many subjects (math, science, geography, and English) since she was in high school and has homeschooled her own children since 2014. She has been a research assistant, an animal scientist, and a paralegal. She holds a bachelor's degree in animal science from NMSU, a master's degree in animal science from Mizzou, and a Juris Doctorate from UNM.

  • Instructor
    David White
Learn about William Masters and Virginia Johnson. Explore the Masters and Johnson study on human sexuality and the Masters and Johnson stages of arousal.
Frequently Asked Questions

How did the Kinsey research differ from the Masters and Johnson research?

Kinsey's research involved only talking to people and getting a spoken response . Masters and Johnson's research involved physical research along with talking to people before and after their experience with Master's and Johnson's physical program. It was the first, and thus far, only of it's kind.

What was the Masters and Johnson study?

It was a human sexuality study that looked at how the body responds to sexual stimuli. Masters and Johnson measured heart rate, blood pressure, and muscle tone while subjects masturbated, had artificial stimulation, breast touching, or natural intercourse.

When William Masters hired Virginia Johnson as a research assistant in his lab in 1957, they began the study of human sexuality in unorthodox ways. Human sexuality is the way people react to each other in sexual ways. They looked at human sexuality by testing live patients hooked up to machines to test the stages of sex with paid participants to find what the psychology and behavior of sex really was. Psychology is the study of the mind. Alfred Kinsey had done prior research on human sexuality where he based the research on feedback from study participants. Masters and Johnson's use of live participants to study the body's response and the psychology of the response was groundbreaking. The Masters and Johnson study was self-described to cast the puritanism of sex that had lasted for generations.

William Masters

Born in 1915 in Cleveland, OH, Masters attended Hamilton College and graduated from the University of Rochester with a medical degree in 1947. He became part of the faculty at the Washington School of Medicine in St. Louis, MO. There, he was a researcher in obstetrics and gynecology. In 1954, he hired Virginia Johnson as a research assistant. Masters married Johnson in 1971. When the couple divorced in 1993, their work together helping couples with dysfunction ended. William Masters died in 2001.

Virginia Johnson

Born in 1925 in Springfield, MO, she attended Drury College and the University of Missouri. She worked for more than fifty years in the field of human sexuality and dysfunction and died in 2013.

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  • 0:04 Who Were Masters and Johnson?
  • 0:53 Masters and Johnson Research
  • 2:15 Masters and Johnson's…
  • 4:40 Master and Johnson's Findings
  • 6:12 Lesson Summary

William Masters had to obtain special permission for his testing and get grants and funding from many sources. Following the release of Human Sexual Response and Human Sexual Inadequacies, the NIH removed their funding. Masters and Johnson turned to Playboy Magazine for help.

  • 1954 William Masters began his research at Washington University in St. Louis
  • 1957 William Masters hired Virginia Johnson as a research assistant an
  • 1966 Human Sexual Response is published and research continues while book tours and seminars start

Additional studies and books continue throughout the 60's, 70's, 80's, and early 90's.

Masters and Johnson's Technique

Masters and Johnson's technique was to use live participants in the lab and measure the heart rate and blood pressure of the participants during and after the sexual encounter to see how the participants were affected.

Masters and Johnson's research led them to several findings. The model they used with human subjects was one of the first, and only, of the kind. One of these findings to come from this research was that there were four stages of arousal in human individuals. As a result of these findings, they were able to aid couples until each or their deaths with sexual dysfunction and couple sexual issues.

Four stages of arousal:

  1. Excitement - while it can seem to happen randomly, it seems to happen as a result of stimulation; nipples become hard, blood pressure and heart rate go up, men get erections, and women get vaginal secretions
  2. Plateeau - full sexual arousal; prior to orgasm; men may have preejaculate, both sexes have muscular contractions in their genitals
  3. Orgasm - rhythmic muscular contractions for both sexes in the genitals coupled with extreme pleasure
  4. Resolution - interest goes away and the body begins to return to normal

The refractory period is the period after the four stages of arousal that it is impossible for the human male to experience arousal.

Because they moved sex out of the bedroom and into the laboratory, sex could be studied and more understood. Men could finally understand premature ejaculation and impotence and women who could not orgasm could finally find ways to have satisfaction and excitement with their partners. There were solutions to these issues because of the research from Masters and Johnson.

William Masters and Virginia Johnson were pioneers in the study of human sexuality in 1957. Human Sexuality is a part of the science of psychology or the study of the mind. Masters and Johnson's work was widely respected during their time except for their beliefs that conversion therapy could treat the LGBT community since it was as they believed a learned behavior. They gave up on this notion quickly and focused on other ideas. However, their work is widely seen as unethical and somewhat biased due to flaws in the model's management and techniques. Unethical practices are those that go against what is standard and might be considered morally wrong. The reason these studies might be deemed unethical is first, the subjects didn't always know they were going to be filmed and even though every effort was made to protect their identities, permission should have been obtained. Additionally, not all the participants were aware of what would happen. Also, all of the participants were white, well-educated, and middle-class. This led to a great bias.

The Masters Johnson model of arousal had four steps to arousal: excitement, plateau, orgasm, and resolution. After the resolution, there is a refractory period before the four-stage can begin again. Men have a longer refractory period than women and women can have multiple orgasms within the same arousal period. Masters and John's research paved the way for other individuals to be able to study and research sex, like Alex Comfort and Dr. Ruth Westheimer.

Video Transcript

Who Were Masters and Johnson?

It may be hard to imagine now, but there was a time not so long ago when certain topics simply weren't discussed in United States, much less studied in an academic context. Sex, for example, was something that was spoken of in hushed tones and studied in a general, non-specific sense. That is, of course, until the late 1950s when William Masters began his pioneering research on human sexuality.

William Masters was an American gynecologist who began his controversial work on human sexual response at Washington University in the late 1950s. Working with his research assistant, Virginia Johnson, Masters conducted observational research into the anatomical and physiological process of human sexual intercourse and sexual response.

Masters and Johnson Research

When Masters and Johnson began their work in 1957, human sexuality was a largely under-analyzed area of study. Although Alfred Kinsey had published two volumes on the subject some years earlier, Kinsey's work was largely focused on the behavioral aspects of sex (frequency, fetishes, etc.). Masters, on the other hand, was interested in the technical specifics of sexual intercourse (i.e., what goes where, what happens, and why).

William Masters was particularly interested in sexual dysfunction. Additionally, of interest to Masters and Johnson was the physical structure of female anatomy, which was widely misunderstood or ignored at the time. Their research was heavily focused on the physiological process that occurred in the body during intercourse and at the point of orgasm. They would monitor breathing and heart rate during the act and observe, often up close, the internal and external processes of lubrication and dilation during sex.

The work of Masters and Johnson was highly controversial at the time for its subject and continues to be criticized in the present for its lax methodology and ethical standards. Nevertheless, their work contributed substantially to a better-developed understanding of anatomy, which in turn advanced gynecological medicine.

Masters and Johnson's Technique

Among the more prominent objections that people had and have to Masters and Johnson's research is their technique and methodology. Given the controversial nature of the work, Masters was unable to recruit volunteers and began his study using local prostitutes as participants. This was mostly done out of necessity since prostitutes were easily accessible and knowledgeable about sex, which was lacking among others in the area. The aspect of Masters' early work made it difficult to publish or find funding, leading Masters to strengthen his search for additional participants.

Once they were able to recruit other participants into a clinical setting, their research became more formal and had structure. Usually, participants were interviewed and statistical data was gathered, after which the physical part of the study began. Depending on the circumstances, participants would engage in manual masturbation or intercourse, which was observed by the researchers, who were collecting physiological and anatomical data throughout. The final phase of participation involved an exit interview in order to gain insight into the psychological process.

Initially, the work was conducted with white heterosexual participants, a large percentage of whom were married at the time of engaging in sex acts with their randomly assigned partner. In their later years, however, Masters and Johnson began to conduct research into the sexual practices of gay and lesbian participants. While their early research is widely regarded as being profoundly important, the research into homosexual couples was heavily focused on conversion therapy, or a discredited type of ''therapy'' that had results claiming that a significant percentage of participants were successfully converted from homosexual to heterosexual. In the 21st century, it's believed that William Masters falsified or misrepresented this data.

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