Promiscuity
Promiscuity is the practice of engaging in sexual activity frequently with different partners or being indiscriminate in the choice of sexual partners. The term can carry a moral judgment. A common example of behavior viewed as promiscuous by many cultures is the one-night stand, and its frequency is used by researchers as a marker for promiscuity.
What sexual behavior is considered promiscuous varies between cultures, as does the prevalence of promiscuity. Different standards are often applied to different genders and civil statutes. Feminists have traditionally argued a significant double standard exists between how men and women are judged for promiscuity. Historically, stereotypes of the promiscuous woman have tended to be pejorative, such as "the slut" or "the harlot", while male stereotypes have been more varied, some expressing approval, such as "the stud" or "the player", while others imply societal deviance, such as "the womanizer" or "the philanderer". A scientific study published in 2005 found that promiscuous men and women are both prone to derogatory judgment.
Promiscuity is common in many animal species. Some species have promiscuous mating systems, ranging from polyandry and polygyny to mating systems with no stable relationships where mating between two individuals is a one-time event. Many species form stable pair bonds, but still mate with other individuals outside the pair. In biology, incidents of promiscuity in species that form pair bonds are usually called extra-pair copulations.
Motivations
Accurately assessing people's sexual behavior is difficult, since strong social and personal motivations occur, depending on social sanctions and taboos, for either minimizing or exaggerating reported sexual activity.American experiments in 1978 and 1982 found the great majority of men were willing to have sex with women they did not know, of average attractiveness, who propositioned them. No woman, by contrast, agreed to such propositions from men of average attractiveness. While men were in general comfortable with the requests, regardless of their willingness, women responded with shock and disgust.
The number of sexual partners people have had in their lifetimes varies widely within a population. We see a higher number of people who are more comfortable with their sexuality in the modern world. A 2007 nationwide survey in the United States found the median number of female sexual partners reported by men was seven and the median number of male partners reported by women was four. The men possibly exaggerated their reported number of partners, women reported a number lower than the actual number, or a minority of women had a sufficiently larger number than most other women to create a mean significantly higher than the median, or all of the above. About 29% of men and 9% of women reported to have had more than 15 sexual partners in their lifetimes. Studies of the spread of sexually transmitted infections consistently demonstrate a small percentage of the studied population has more partners than the average man or woman, and a smaller number of people have fewer than the statistical average. An important question in the epidemiology of sexually transmitted infections is whether or not these groups copulate mostly at random with sexual partners from throughout a population or within their social groups.
A 2006 systematic review analyzing data from 59 countries worldwide found no association between regional sexual behavior tendencies, such as number of sexual partners, and sexual-health status. Much more predictive of sexual-health status are socioeconomic factors like poverty and mobility. Other studies have suggested that people with multiple casual sex partners are more likely to be diagnosed with sexually transmitted infections.
Severe and impulsive promiscuity, along with a compulsive urge to engage in illicit sex with attached individuals is a common symptom of borderline personality disorder, histrionic personality disorder, narcissistic personality disorder, and antisocial personality disorder but most promiscuous individuals do not have these disorders.
Cross-cultural studies
In 2008, a U.S. university study of international promiscuity found that Finns have had the largest number of sex partners in the industrialized world, and British people have the largest number among big western industrial nations. The study measured one-night stands, attitudes to casual sex, and number of sexual partners. A 2014 nationwide survey in the United Kingdom named Liverpool the country's most promiscuous city.Britain's position on the international index "may be linked to increasing social acceptance of promiscuity among women as well as men". Britain's ranking was "ascribed to factors such as the decline of religious scruples about extramarital sex, the growth of equal pay and equal rights for women, and a highly sexualized popular culture".
The top-10-ranking OECD nations with a population over 10 million on the study's promiscuity index, in descending order, were the United Kingdom, Germany, the Netherlands, Czechia, Australia, the United States, France, Turkey, Mexico, and Canada.
A 2017 survey by Superdrug found that the United Kingdom was the country with the most sex partners with an average of 7, while Austria had around 6.5. The 2012 Trojan Sex Life Survey found that African American men reported an average of 38 sex partners in their lifetime. A study funded by condom-maker Durex, conducted in 2006 and published in 2009, measured promiscuity by a total number of sexual partners. The survey found Austrian men had the highest number of sex partners globally, with 29.3 sexual partners on average. New Zealand women had the highest number of sex partners for females in the world with an average of 20.4 sexual partners. In all of the countries surveyed, except New Zealand, men reported more sexual partners than women.
One review found the people from developed Western countries had more sex partners than people from developing countries in general, while the rate of STIs was higher in developing countries.
According to the 2005 Global Sex Survey by Durex, people have had on average nine sexual partners, the most in Turkey and Australia, and the fewest in India and China.
According to the 2012 General Social Survey in the United States by the National Opinion Research Center at the University of Chicago, Protestants on average had more sex partners than Catholics. Similarly, a 2019 study by the Institute for Family Studies in the US found that of never married young people, Protestants have more sexual partners than Catholics.
Female promiscuity
In 1994, a study in the United States found almost all married heterosexual women reported having sexual contact only with their husbands, and unmarried women almost always reported having no more than one sexual partner in the past three months. Lesbians who had long-term partners reported having fewer outside partners than heterosexual women. More recent research, however, contradicts the assertion that heterosexual women are largely monogamous. A 2002 study estimated that 45% to 55% of married heterosexual women engage in sexual relationships outside of their marriage, while the estimate for heterosexual men engaging in the same conduct was 50–60% in the same study.One possible explanation for hypersexuality is child sexual abuse trauma. Many studies have examined the correlation between CSA and risky sexual behavior. Rodriguez-Srednicki and Ofelia examined the correlation of CSA experienced by women and their self-destructive behavior as adults using a questionnaire. The diversity and ages of the women varied. Slightly fewer than half the women reported CSA while the remainder reported no childhood trauma. The results of the study determined that self-destructive behaviors, including hypersexuality, correlates with CSA in women. CSA can create sexual schemas that result in risky sexual behavior. This can play out in their sexual interactions as girls get older. The sexual behaviors of women that experienced CSA differed from those of women without exposure to CSA. Studies show CSA survivors tend to have more sexual partners and engage in higher risk sexual behaviors.
Since at least 1450, the word 'slut' has been used, often pejoratively, to describe a sexually promiscuous woman. In and before the Elizabethan and Jacobean eras, terms like "strumpet" and "whore" were used to describe women deemed promiscuous, as seen, for example, in John Webster's 1612 play The White Devil. In contemporary culture, the term has also been reclaimed or reframed in some feminist, queer, and youth communities as a way to challenge sexual stigma and assert personal autonomy, with movements such as SlutWalk and projects like the UnSlut Project using the term to confront slut-shaming and promote sexual agency, although its reclamation remains contested and context-dependent rather than universally accepted.
Thornhill and Gangestad found that women are much more likely to sexually fantasize about and be attracted to extra-pair men during the fertile phase of the menstrual cycle than the luteal phase, whereas attraction to the primary partner does not change depending on the menstrual cycle. A 2004 study by Pillsworth, Hasselton and Buss contradicted this, finding greater in-pair sexual attraction during this phase and no increase in attraction to extra-pair men.
In Norwegian students, Kennair et al. found no signs of a sexual double standard in short-term or long-term mating contexts, nor in choosing a friend, except that women's self-stimulation was more acceptable than men's.
Male promiscuity
Heterosexual/straight men
A 1994 study in the United States, which looked at the number of sexual partners in a lifetime, found 20% of heterosexual men had one partner, 55% had two to 20 partners, and 25% had more than 20 sexual partners. More recent studies have reported similar numbers.In the United Kingdom, a nationally representative study in 2013 found that 33.9% of heterosexual men had 10 or more lifetime sexual partners. Among men between 45 and 54 years old, 43.1% reported 10 or more sexual partners.
A 2003 representative study in Australia found that heterosexual men had a median of 8 female sexual partners in their lifetime. For lifetime sexual partners: 5.8% had 0 partners, 10.3% had 1 partner, 6.1% had 2 partners, 33% had between 3 and 9 partners, 38.3% had between 10 and 49 partners and 6.6% had more than 50 female sexual partners.
A 2014 representative study in Australia found that heterosexual men had a median of 7.8 female sexual partners in their lifetime. For lifetime sexual partners: 3.7% had 0 partners, 12.6% had 1 partner, 6.8% had 2 partners, 32.3% had between 3 and 9 partners, 36.9% had between 10 and 49 partners and 7.8% had more than 50 female sexual partners.