Sexual Orientation, Gender Identity, Presentation, and Biological Sex

Sexual Orientation, Gender Identity, Presentation, and Biological Sex

“Everyone under 25 thinks they are queer.”

~   The Bisexual (Hulu)

Mating Straight Talk (MST) attempts to scientifically demonstrate the evolved behavioral sex differences between men and women and explain human mate selection; it does so because heterosexual (behaviorally) men and women produce human children and the race of homo sapiens on earth.

MST affirms “straight” male and female sexuality as drivers of procreation and protection of offspring but recognizes outliers of sexual orientation that must be explained or incorporated into the understanding of the forces that propel sexual reproduction.  We cannot fully understand “straight” sexuality without considering the proportion, “causes,” and role that homosexuality (and all apparent variations of sexual orientation along a continuum) may play in the evolution of human species — or at least the role of sexual orientation variations in contemporary dating and mating.

Starting with a Basic Foundation of Sexual Orientation

In the coming months, I will write about the complex and sometimes confusing world of sexual orientation, gender identity, identity presentation, and the biology of sex. I will start by addressing a “basic foundation”: sexual orientation among cisgender individuals – (people who identify with the biological sex that they were assigned at birth).

Cisgender Is Subjective

While cisgender individuals are the statistical norm (mode), even “cisgender” (as a category of gender identity) has a psychological component. Identity is always subjective and personal.  For example, a person can have an xx chromosomal/genetic makeup, female external genitalia, female internal reproductive organs, be considered a girl by the hospital, midwife, and parents, yet still “choose” to identify as a man.  However, being cisgender theoretically says nothing about sexual orientation — nothing about who that person desires and wants to have sex with (or why).   Sexual orientation, gender identity, and gender presentation often get conflated and confused in the immense vocabulary of “identity” parlance.  Later, I will introduce the variations of gendered identity beyond cisgender and biological sex (i.e., “male” and “female.”)

But to simplify, let’s begin with sexual orientation among cisgender identified individuals and consider the following “foundational” spectrum:

Orientation Spectrum
  • Homosexuality (gay/lesbian): (Near) exclusive sexual attraction to, or sexual activity with, the same sex.
  • Bisexuality: Some proportion of attraction to both the opposite sex and the same sex (roughly within a 30-70% split one way or another as a conceptual null hypothesis) exhibited by internal experience, desire, and behavior depending upon the context and a host of factors.
  • Mostly straight” women:  I will also call them “hetero-flexible.”  These are self-identified heterosexual women who express an “occasional” or infrequent feeling of desire for another women or behavior of sexual attraction to another woman.  Along with outright bisexuality, this orientation designation draws from a broad spectrum of research on women’s sexual fluidity that is dramatically on the increase among Gen Y.1 (25-29 years old) and Gen Z (up to 24 years of age).
  • Mostly straight” men: Based on the book and research by Rich Savin-Williams at Cornell, these are supposedly self-identified heterosexual men who occasionally have a desire for and sexual behavior with other men. For me, this is the most interesting (and perhaps controversial) category to investigate on the sexual orientation spectrum.  What does evolutionary psychology have to say about these men?
  • Heterosexual men and women: Men and women who are sexually attracted to the opposite sex.  They are the most common orientation and the subject of most research on sexual selection in evolutionary psychology.
  • Where do asexuals, “pansexuals,” and “demi-sexuals” fit along the above spectrum? Are they an actual orientation?  All of this will be explored in future posts.
Sources of Information

These are broad and complex topics studied and researched primarily within the field of “gender studies.”  I will draw upon just a fraction of the available literature, including:

Books:

  • Lisa Diamond’s classic Sexual Fluidity, Understanding Women’s Love and Desire (2008).
  • Rich Savin-Williams’ ground-breaking book, Mostly Straight, Sexual Fluidity Among Men (2017).
  • Jennifer Baumgardner’s Look Both Ways — Bisexual Politics (2007).

Popular – Lay Critiques:

  • “The Science of Gender (Time Magazine, Special Edition, 2020).
  • “The Gender Revolution” (National Geographic, Special Edition, Jan. 2017).
  • Writings and resources from the website Them and writings in the categories of relationship and sexuality appearing in Medium.

Last But Not Least — from Evolutionary Psychology:

  • Numerous critiques, studies, and articles.

 

Commentary in Future Posts – Confusion and Inquiry

Here are some of the issues that I will be addressing in the coming months:

What Are the Effects of Increasing Female Sexual Fluidity on Heterosexual Relationships?

  • The “new” bisexuality and hetero-flexibility of women may significantly influence the heterosexual mating marketplace – a marketplace that already favors the erotic power of women to choose and the struggles of men to be chosen.  We would be well served to understand the cultural forces that seem to have increased female sexual fluidity.
  • Is there a drift away from men as sexual partners and less understanding and respect for male heterosexuality? This “drift away” from men appears to be an exercise in preference, not orientation.
  • What are the problems of heterosexual men in attempting to partner with these women? The bisexual behavior of women may be uncovering an inherent female bisexual orientation, or it could also be an expression of a disenchantment with men and masculinity in general.
What Are the Sociological Causes of Increased Declarations of “Queer” Identity?
  • Is the increased number of “queer-identified” (used as a convenient short-cut, catch-all term) young Americans due to new permission to “come out,” or is there some deeper nature-nurture co-evolution expressing itself (albeit with radically accelerated speed)?
  • How much of “queer identity” is a cultural meme related to the need to be unique and “cool” yet also (paradoxically) driven by a need to belong and relieve anxiety?
  • How much of this cultural phenomenon (or even a fast-moving nurture-nurture co-evolutionary effect) is a function of the digital and virtual world where any identity can be tested and tried with relative anonymity? (See episodes of Black Mirror.)
  • How much of “queer identity” reflects a lens of activism projected through the entertainment media: the view of the outlier and artist who is disproportionately “queer,” providing commentary on all these issues through film, TV, and theatre?  Are we being “hammered” by political correctness and snowflake psychology to put a flashing (and exaggerated) neon light on the need for change?  Does this powerful voice of change necessarily represent a proportional expression of the actual numbers of people within the sexual orientation and gender identity communities across the globe?
Conflating of Terms Across Domains of Function

There is a mixture and conflating of orientation, gender identity, biological sex, and gender presentation in the umbrella category of LGBTQ2SIA+.

The LGBTQ2SIA+ acronym is a political designation that identifies anyone who does not identify with the biological sex “assigned to them” at birth or anyone who is not heterosexual.  Therefore, this categorical umbrella has myriad designations of biology and subjective psychological states which overlap and involve redundancy with inadequate definitions and distinctions between them.  (This is one of the reasons why there is much internal strife between political advocacy groups representing these designations.)

Conflating of Biological Sex and Gender Identity in Arguments

In the political advocacy writings about (and from) these groups, there is often a conflating of biological sex and gender identity in their arguments.  On the one hand, the difference between biological sex and gender identity is described.  Then several paragraphs later, gender identity will be used to imply biological sex and vice versa without noting that a blurring of definitions has occurred.

What About Trans-sexuality and Intersex?

The issues, needs, and stories of transsexuals are compelling and deserve our full attention and support. Unpacking the permutations of gender identities and expressions of sexual orientation among transsexuals (and their partners) is one of the most unexplored areas of sexual, psychological research.  One question jumps out in this sphere:  what is the biological basis (genetic, hormonal, neural) for gender dysphoria?

There are differences of opinion about the nature and amount of people who do not present as one biological sex or the other, i.e., as men or women.  These people are called intersex — an umbrella term for several biological and physiological conditions.  Intersex folks are rare, but their political advocacy is not.

Do We Still Have Biological Men and Women?

What we are perhaps left with, inside the advocacy of these various groups, is the idea that a biological “man” and “woman” may no longer make sense.  It is asserted (in some circles) that not only is gender “non-binary” (with literally millions of possibilities of proclaimed identification) but that biological sex is also non-binary (which is NOT to say it is a continuum).  And yet, we need sperm and ovum (unfertilized female gamete) to make the human race on planet earth.

Political Battles and Framing

One might notice that much of the discussion about gender identity, orientation, etc., is framed as a political battle of us vs. them, oppressed vs. oppressor, victim vs. perpetrator. This framing is not incorrect per se; it just obfuscates the knowledge within the biological and psychological sciences.   It heightens the influence of the social and emotional context in the field of human sexuality (especially female sexuality) and reproduction.  The history and certitude of human reproduction and sexual selection are blurred under the weight of group politics and individual expressions for belonging, recognition, and justice.

Why Swim in These Waters?

An attempt to systematically unpack the confusing and ever-evolving narratives of sexual orientation and gender identity is probably a fool’s errand.  Why address issues of sexual orientation in the posts of MST (leaving aside, for now, the multitudinous universe of gender identity variations)?  From the About page on this site, one of the purposes of MST is “to explore and bring clarity to issues of gender politics and the tensions between men and women related to roles, power, and sexual strategies with a focus on honesty, mutual understanding, and complementarity.” The upcoming posts are “on purpose.”

Evolutionary Psychology Joins the Conversation

Conversations about orientation and identity are ubiquitous in current politics, popular psychology, social media, and entertainment.   They are staring us in the face.  Evolutionary psychology and mate selection science must be in the mix with critique and information and thus utilize this cultural moment to expand our knowledge of what it means to be a sexual human being.

Outliers Reveal More About Evolved Sex Differences?

Statistical outliers of orientation may help elucidate the nature of male and female sexuality and the evolved behavior differences between “the sexes.”  The broader conversation about the spectrum of sexual orientation and gender identity may increase our understanding of the co-evolutionary synergy of biology and culture.  Grasping the contours of sexuality in 2021 seems to require exploring the continuum of “queer” identities; it calls for an inquiry about the biology, psychology, and cultural politics of desire and sexual relating.   Certainly, it provokes curiosity about what it means to be human.

Beyond Nature and Nurture

Relatedly, evolutionary psychology (EP) must continue to articulate insights beyond the “nature vs. nurture” debate and explain what is meant by “dual inheritance” or “structured prior-to-experience.”  Also, EP must recognize the possibilities of human potential that come from “naming” (if not discovering) new forms of identity.

The Tenets of Sexual Selection Do Not Change

Alas, perhaps it is not necessary to solve the riddle of homosexuality, bisexuality, and “mostly straight” sexuality (and other variations of orientation) as it relates to evolution and sexual reproduction.  (More of the fool’s errand?  The jury is still out.) The basic tenets of mate choice (sexual selection) for reproduction do not change.  Procreation between biological men and women (sperm and ovum) seems to operate unimpeded on its own terms.

 

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Women’s Preferences for Male Facial Masculinity

Women’s Preferences for Male Facial Masculinity

The face is more honest than the mouth will ever be.”

~ Daphne Orebaugh

In a prior post (Want An equal Marriage? Then Date As Equals),  I described the “trade-off problem” (coined by evolutionary psychologists) that women have in choosing between male alpha traits of dominance and status and male beta traits of loyalty and kindness.  Recent research reveals this trade-off phenomenon is operative when a woman rates a man’s attractiveness as a function of his facial masculinity.  Do women who are attracted to men prefer a macho, masculine appearance? Or is a gentler, more feminine face the ideal?

Take-away – High-level

Along a continuum of digitally produced hyper-feminine to hyper-masculine faces, women preferred the “moderately” masculine face.  Women’s preference for moderately masculine faces comports directly with the overall female mating strategy that attempts to find the “sweet spot” of an alpha-dominant man (with resources, prestige, and hierarchical power) and a “beta” man who will be trustworthy and invest in her children.  This trade-off problem is solved by finding a compromise for facial masculinity –  identifying a masculine face rated above the mean but not so masculine as to be perceived as untrustworthy.   A preference for “moderately” masculine faces demonstrates the combination of a woman’s long-term and short mating strategy and her competing intentions for selecting traits in an ideal mate.

Order of Facial Preference (Summary)

After moderately masculine faces, the order of preference for male faces was “intermediate” (balanced masculine and feminine) faces, followed by extremely masculine and moderately feminine faces.  Extremely feminine (male) faces were the least attractive to heterosexual women.

Masculine Traits in the Animal Kingdom

In the rest of the animal kingdom, males with exaggerated masculine traits are favored.  For example, the showy plumage of a bird of paradise or the puffed-up chest of a silver-back gorilla makes these animals luckier in love. This is likely because there is a link between these macho traits and health and vigor. A preference for masculine traits is a preference for a male who will make a good biological father.

Tough Guys and Sensitive Types

In our species, perhaps unsurprisingly, the story is more complicated. Some women prefer “tough guys,” and others prefer more sensitive types. Why?  In some circumstances, masculine qualities are more valuable. In others, a more feminine partner might be the better choice.

Dimorphism and the Masculine Human Face 

Men’s facial masculinity expresses the degree of dimorphism or physical differences between the sexes in humans.  A masculine face has narrower eyes and thinner lips; a broader mandible (jawbone), chin, forehead, and (wider) nose; larger cheekbones, a long lower face height below the nasal region, a more protruded and robust brow ridge, straighter eyebrows, facial hair, and darker complexion. The heavy lower face that women favor in men is a visible record of the surge in testosterone and other male sex hormones that turn small boys into athletic men.

Male Facial Hair and Attractiveness

A paper published in January 2020 found that facial masculinity was positively correlated with attractiveness, and beards significantly increased attractiveness in both short-term and long-term scenarios. The effect is demonstrated by the fact that full-bearded feminine (male) faces (otherwise least attractive) were rated as more attractive than clean-shaven moderately masculine faces (otherwise, the most attractive).

“Moderate” Man Pictured Above

The signature image for this post demonstrates (IMO) a moderately masculine face.  This man has narrow eyes, a wide jaw bone, prominent cheekbones, a fairly robust brow ridge, facial hair, and a darker complexion.  He does not have a broad nose or significant face height below the nasal region.  His facial symmetry (see Appendix) is nearly perfect, generating overall attractiveness (and perhaps a touch of femininity). His expression is determined, if not slightly menacing, adding an artifact to his overall masculinity.

What is a Feminine Face?

Given the dimorphism between the sexes, it is necessary and instructive to consider the “feminine face” to access levels of facial masculinity.  Social psychologist Michael Cunningham at the University of Louisville found dimensions and proportions of the ideal female face: large eyes, small chin and nose, high cheekbones, and narrow cheeks.  These traits are signs that a woman has reached puberty.   The tiny jaw is essentially a monument to estrogen and obliquely to fertility – signaling the increased odds that she could get pregnant.  High eyebrows, dilated pupils, and broad smile signal excitement and sociability.  Cunningham also found that men are looking for lips that have “fullness, redness, and warmth.”

Hyperfeminine Face

When researcher David Perrett exaggerated the ways in which the prettiest female composite differed from the average composite, the resulting face was judged more attractive.  “It turned out that the way an attractive female face differs from an average one is related to femininity,” say Perrett.  “For example, the female eyebrows are more arched than males and exaggerating the difference from average increases femininity.”  Perrett created a “hyperfeminine” face in his studies by slightly changing the face to have larger eyes, a smaller nose, plumper lips, a narrow jaw, and a smaller chin. (See “Averageness and Exceptionality” in Appendix.)

The hyperfeminine face is considered attractive (if not beautiful) by both men and women.  The hypermasculine face is considered less attractive than average, especially by women.

Healthy Men Can Afford High Levels of Testosterone

Facial masculinity is a secondary sexual trait caused by sex-specific ratios of androgens (testosterone) and estrogens, affecting morphology (physical form and structure) and behavior.   It is hypothesized that women should find facial masculinity attractive in potential mates because masculinity may act as an honest signal for male health.  Only men with above-average health in adolescence can “afford” to produce high levels of testosterone that masculinizes the face.   Facial masculinity is positively associated with some aspects of men’s health and disease resistance.

Facial Masculinity May Signal Competitive Ability

Facial masculinity may signal competitive ability to other men and the ability to provide protection and resources.  It may also provide relevant information to potential mates and same-sex rivals regarding reproductive maturity, underlying health, formidability, and social status. More masculine-looking men tend to have more muscular physiques and greater physical strength, health, and competitive ability.

Facial Masculinity is Associated with Behavioral Dominance

Facial masculinity is associated with behavioral dominance, an open sociosexual orientation (level of “sapiosexuality”*), and higher social rank in same-sex dominance hierarchies.    It has been reported that square-jawed men start having sex earlier than their peers and attain higher ranks in the military.

Trade-off: Good Health vs. Good Parent

Masculine facial traits increase both perceived dominance and decreased quality as a parent.  High levels of testosterone have been linked to undesirable social traits such as aggression and decreased parental investment.   Again, women may face a trade-off between choosing a less masculine but more agreeable (and investing) long-term partner versus choosing a man whose masculine appearance indicates good health — but who may have less socially desirable traits. Thus, variation in preference for masculine men may reflect choices for more prosocial partners and nurturing fathers over possible indirect (genetic) and direct benefits associated with masculine facial traits.

“Masculine” Men and Likelihood of Sexual Infidelity

Masculine-looking men are perceived to be less warm, kind, and less paternally investing.   Further, masculine men state higher preferences for short-term mating than for long-term relationships.  They engage in more short-term relationships than their less masculine peers, and women accurately assign the likelihood of sexual infidelity for the masculine facial shape in static photographs.  Women find less masculine faces more attractive for a long-term relationship, perhaps because macho men are generally less committed.

Women Prefer More Masculine Men for Short-term Flings

Illustrating collusion or synergy related to a masculine man’s short-term mating preference, the results of 15 years of research consistently show that women find above-average masculine faces to be sexiest and most attractive for a casual sexual encounter.

Study Rated Degrees of Facial Masculinity

As reported in Adaptive Human Behavior and Physiology (2017),  Iris Holzleitner (Institute of Neuroscience & Psychology in Glasgow) published a comprehensive study of how women differ in their preferences for male facial masculinity.  Holzleitner recruited 563 women who rated the attractiveness of a set of male faces that had been manipulated to appear more feminine or more masculine. Masculine faces were altered to have a more robust jaw, narrower eyes and lips, and a wider nose. In many research studies, volunteers are only asked to compare one feminized face with one masculinized face; in Holzleitner’s study, volunteers individually rated faces of varying degrees of masculinity.

Example of Continuum of Facial Masculinity

Degrees of facial masculinity are depicted below as an illustrative example.  The “average” face is from a research data set; the “less masculine” and “more masculine” faces are alterations from the “average” made by web-master and photographer Tom Carroll, especially for this post.   Changes to the jawline, cheeks, chin, lips, eyes, and eyebrows exaggerate the difference between a “feminized” male face and a strong (perhaps “hyper”) masculine face; Holzleitner’s computer-generated facial changes were more subtle, systemized, and “mathematical” along a continuum. The average face depicted here is roughly equivalent to a “moderately” masculine face.

three faces of masculinity
Women Preferred the “Moderately Masculine”

Holzleitner found that women most preferred male faces that were moderately masculine. Very masculine or feminine faces were less appealing. However, the degree of masculinity a woman preferred in a man’s face depended somewhat on her own characteristics.

Sexual Orientation-Fluidity Effect

Not surprisingly, women who had some attraction to women tended to rate feminine male faces more attractive.  Whereas women who were exclusively attracted to men had a stronger preference for more masculine faces. “The more women were exclusively sexually attracted to men, the more attractive they found highly masculine faces,” reported Holzleitner.

Recent Research on Sexual Fluidity Effect 

Variations in the sexual orientation (degree of fluidity or “hetero-flexibility”) of self-identified heterosexual women influence preferences for male facial masculinity, according to recent research by Carlotta Batres (2020) published in the International Journal of Sexual Health.  Batres is a professor and director of The Preferences Lab** at Franklin & Marshall College.

Batres and colleagues asked 27,611 heterosexual women to report their level of sexual attraction to women, level of sexual attraction to men, hormonal contraceptive use, relationship status, attitude toward casual sex, and self-assessed attractiveness. The participants were then shown pairs of male faces and instructed to select which face from each pair they considered to be the most attractive.

Sixty-two Percent of Heterosexual Women Reported Some Attraction to Women!

Even though all the women identified as heterosexual, 62.6% reported some level of sexual attraction to other women. This finding was quite significant (if not surprising) by itself.  But more pertinent to the study was the finding that attraction to women influenced assessments of male attractiveness.

“Heterosexual” Women Who Are Attracted to Women Prefer Less Masculine Faces

Batres found the same effect as did Holzleitner.  Women with higher levels of attraction to other women were more likely to view less masculine-looking male faces as more attractive.

Attractive Women Did Not Prefer Feminine Faces

Women also differed in their preferences according to their self-rated attractiveness.  Women who thought they were high in attractiveness didn’t find feminine male faces very attractive at all, but less attractive women rated them moderately appealing. Both self-rated attractive and self-rated unattractive women agreed that moderately masculine men were the most appealing and that very masculine men were slightly less so (as in “order of preference above”).

More Attractive Women Want More Masculine Faces

Stated another way, more attractive women showed less tolerance for lower levels of masculinity than did less attractive women.  The more physically attractive the woman (by self-rating), the stronger preference for higher levels of masculinity.  More attractive women also showed greater discrimination than less attractive women in their preference for masculine faces.

Male-Female Polarity Phenomenon

Greater discrimination or more “choosiness” is a predictable behavior of more attractive women.  As uncovered in Batres’ research, this result is a phenomenon of male-female polarity:  beautiful women want and get more masculine men (men with masculine facial features, taller, and with more defined v-shaped torsos). This polarity seems biologically unconscious as well as predicted by “sorting” in the mating economy.  There is a “mate value” agreement: beautiful women have a high mate value and taller, masculine men generally have higher mate value than shorter and less physically masculine men.

Beautiful Women Can “Afford” More Masculine Men

Attractive women have more immunity from the costs of disloyalty often imposed by more masculine men.  Masculine men are less likely to abandon very beautiful women.  The costs are higher for less attractive women – those women calculate the risk and often “trade” for more “beta” character traits in their choice of a long-term partner.

Women Prefer Masculine Faces in Better Economic Conditions

According to a study appearing in scientific reports  (2019), women’s preference for facial masculinity is strongest under favorable ecological conditions.    Improved economic conditions reduce the need for parental investment from men.  Women may prefer a less masculine and more loyal mate under more tenuous economic conditions – conditions for which assured parental investment is most important.

Female Short-term Mating Increases in Favorable Economic Conditions

Women’s preferences for masculine faces, bodies, voices, and odors are stronger when considering short-term rather than long-term mates.  Economically favorable conditions and reduced need for parental investment may cause women to have more interest in short-term mates and thus more masculine men, referred to as higher “sapiosexuality.”  Under favorable economic conditions, women reported greater willingness to engage in less romantically committed relationships and were more likely to select masculine faces as most sexually attractive.

Holzleitner proposed that women in prosperous countries were more sexually liberated and economically secure, thus freer to make costly mate choices.   Holzleitner’s research does seem to provide further evidence that promiscuous women tend to prefer more masculine men.

Menstrual Cycle Affects Facial Preference

Women may be attracted to masculine-looking men at the most fertile time of their menstrual cycle.  This “ovulatory shift hypothesis” contends that a woman’s preference for more masculine partners as short-term mates may be strongest at the peri-ovulatory phase of the cycle.  In a study conducted in Scotland and Japan, researchers asked women to select one “face” they were most attracted to for a short-term sexual relationship.  In the most fertile week of their menstrual cycle, women preferred more masculine faces.   During the less fertile time, women chose men with more feminine-looking faces.  These men were seen as kinder and more cooperative but less strong and healthy genetically.  However, the choice of face did not vary for women using an oral contraceptive or those asked to choose the most attractive face for a long-term relationship.  Research supporting the ovulatory shift hypothesis is not conclusive.

Preference for Masculine Faces Associated with Poor National Health

Evolutionary mating theories propose that women overlook the costs of selecting less paternally investing masculine traits to secure benefits associated with phenotypic masculinity that could enhance offspring (genetic) fitness.  Indeed, preferences for facial masculinity were highest among women living in countries and states in the U.S. that have lower health and higher levels of pathogens.  These findings are bolstered by experimental studies reporting that exposure to pathogens result in higher preferences for facial masculinity.  This suggests that any social costs of selecting masculine partners may be circumvented under conditions where potential indirect (genetic) benefits may be realized.

Confusing and Contrary Research?

While some studies have shown a preference for more masculine traits in poor health conditions, other studies have shown a preference for less masculine traits in poor economic conditions (as stated above). Undoubtedly, poor economic conditions and poor health conditions go together in some cultural-geographical environments.  This appears to reveal confusing or incompatible research results.

Preferences Related to Homicide Rates and Income Inequality

Adding to the mix of data, research by DeBruine, et al. reported that women’s preferences for facial masculinity were strongest in countries with high homicide rates, male-on-male violence, and income inequality (indices of male intra-sexual competition) rather than reduced national health.

Conclusion

In my last post (Side-swiped: Evolutionary Mismatch and Sex Differences with Mobile Dating) I explained how physical appearance takes on a disproportionately large role in dating by mobile app.  A face flickers across the screen, and juices of attraction or disapproval are registered in an instant.  The degree of facial masculinity is recorded in old regions of the brain before a reason for sexual interest can be articulated in words.   (“The face is more honest than the mouth will ever be.”)

Women’s preference for a moderately masculine face aligns with the female long-term mating strategy of finding an “alpha-dominant” man who also reveals safety and loyalty in his face.  This preference is often a compromise or trade-off made by a woman depending upon her attractiveness and mate value, degree of attraction to women, economic security, the health and safety of her environment, and her situational desire for a short-term fling.  Even her menstrual cycle may play a role in the level of facial masculinity she “requires” for sexual attraction.

Studies broadly suggest that women’s perception of male attractiveness is sensitive to facial cues of masculinity.  These facial preferences are shaped by sexual selection, which dictates the benefits and costs associated with choosing a (facially) feminine or masculine partner.

In the world of sexual selection, a face is not just a face.

References

Batres, C; Jones. B.; Perrett, D., “Attraction to Men and Women Predicts Sexual Dimorphism  Preferences,” International Journal of Sexual Health online,  Jan. 21, 2020.

Burriss, R., Ph.D., evolutionary psychologist at Basel University, Switzerland. The Psychology of Attractiveness podcast.

DeBruine, L.M., et al.  “The health of a nation predicts their mate preferences: cross cultural variation in women’s preferences for masculinized male faces. Proc. R. Soc. Lond. B. Biol. Sci. 277 (2010).

Holzleiter, I. J., & Perrett, D. I, “Women’s preferences for men’s facial masculinity: Trade-off Accounts Revisited.”  Adaptive Human Behavior and Physiology (2017) 3:304-320.

Marcinkowska, U. et al., “Women’s preferences for men’s facial masculinity are strongest under favorable ecological conditions.” Scientific Reports, March 2019.

Notes 

*Sapiosexuality (SOI) refers to the desires for and attitudes toward short-term uncommitted and long-term committed sexual partners.   More sexually open or unrestricted people report high scores for sexual openness, more sexual partners, and may not place high importance on sexual monogamy. By contrast, people with a more restricted sociosexuality have fewer sex partners and place greater importance on monogamy, love, and fidelity.  SOI varies both within and between cultures in ways that conform to mating strategy theories. 

** The Preferences Lab examines the information that faces convey.  The lab’s website says:  “It takes only milliseconds for our brains to process someone’s face, and unconsciously we use facial cues to make a myriad of social judgments, ranging from how dominant someone is to how attractive we find them.”

Appendix

From Science of Attraction and Beauty

Bilateral Symmetry

Humans and most other animals are bilaterally symmetric.   The left and right sides of the body are basically the same, including the face in humans.    Small deviations from this symmetry are called “fluctuating asymmetry” (FAs).  Behavioral ecologist Randy Thornhill and other researchers have discovered a preference for symmetry (low FAs) and its influence on human perception of sexual beauty.  Men with symmetrical bodies tend to have symmetrical faces and bodies that are more muscular, taller, and heavier than those of men with less symmetrical bodies.   A bilaterally symmetrical face is a cue to genetic quality and developmental stability.

An Asymmetrical Male Face

asymmetrical male face example

Symmetry Linked to More Sex and Orgasms

Thornhill found that men with symmetrical bodies were more athletic and more dominant in personality than their peers. He also found that symmetrical human males started having sex three to four years earlier than asymmetrical males, have sex earlier in the courtship, and have two to three times as many partners.   

In 1995, Steven Gangestad and Thornhill surveyed 86 couples and found that women with highly symmetrical partners were more than twice as likely to climax during intercourse than those with low-symmetry partners.  When women have extramarital affairs, they tend to choose symmetrical men as partners.

Symmetrical women were favored too.  They have more sexual partners than less symmetrical females and may be more fertile.  Interestingly, women’s symmetry changes across the menstrual cycle.  They are more symmetrical (and presumably more attractive to their partners) on the day of ovulation.

Averageness and Exceptionality

Humans love “average” faces (koinophilia).  The more “average” you are, or closer to the mean of all people, the more attractive you are perceived to be.  From an evolutionary perspective, a preference for extreme normality makes sense, says researcher Judith Langlois: “individuals with average population characteristics should be less likely to carry harmful genetic mutations.”

Yet, paradoxically, the faces we find most attractive are not average!  Victor Johnson at New Mexico State University found the “ideal” female had a higher forehead than average, fuller lips, shorter jaw, smaller chin and nose, and more arched eyebrows. The most exquisite people are slightly away from average.  “Average faces are attractive, but they are not usually the most beautiful.  Maybe it’s the exaggerations of certain features the creates celestial features,” Johnson wrote. 

Baby Face Phenomenon                               

Large eyes, thick lips, a relatively short nose, and a large curved forehead are considered baby face traits.  Many studies indicate that this “baby face phenomenon,” or the tendency to find infant-like facial features attractive, occurs not only because these features suggest youth, but also because they elicit the same warm feelings as our typical response to babies, both human and animal.

Golden Ratio in the Face

The golden ratio or golden rectangle is one of the most satisfying of all geometric forms.  It is a mathematical relationship (a/b = (a+b)/a = 1.618…) that appears in all of nature and science:  plants, animal bodies, painting, architecture, sculpture and even music.  It has been called the “divine proportion.” 

The golden ratio occurs repeatedly in the dimensions of the human face and produces our perception of balance and physical beauty.  The human head forms a golden rectangle with the eyes at the midpoint.   The mouth and nose are each placed at golden sections of the distance between the eyes and the bottom of the chin.  The golden ratio can be found in more than twenty facial calculations.  Human facial beauty is based on divine proportion.  From Queen Nefertiti to Marilyn Monroe, beautiful women throughout history display the golden ratio in the face.

 

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Side-Swiped: Evolutionary Mismatch and Sex Differences with Mobile Dating

Side-Swiped: Evolutionary Mismatch and Sex Differences with Mobile Dating

“With the rise of the mobile dating app, we are in evolutionary unprecedented waters.” 

                        ~ Justin Garcia, Kinsey Institute

Set in the cities and college campuses of Austin, New York City, Santa Cruz, and Plainfield, Illinois, HBO laid bare the lives of Gen Zers and their use of dating apps in the 2018 documentary, “Swiped – Hooking Up in the Digital Age.”  Based on what they uncovered, HBO may have intended “swiped” as a metaphor for being disappointed or blind-sided, in addition to noting the addictive action built into the phone and app design. 

A Generation Built to Swipe

Gen Zers (up to 24 years of age) and a small number of Gen Y.1 (25-29 years of age) were exposed to the internet and computers from a very young age. It is natural (if not cognitively conditioned) to connect to their world and others through a display screen.  But Tinder, Snapchat, Instagram, and Facebook deliver and create a reality that sometimes interferes or competes with real-life (IRL).  In “Swiped,” we see scenes of young people in a crowded New York City bar – but their attention is only on their phones.  One HBO interviewee said folks are “almost zombified, looking at their phones even when all together in the same space.”  “If you called someone these days, you would probably get labeled a psychopath,” joked another young man.

“Swiping” Market is Huge

Tinder estimated there were 1.5 billion swipes per day in 2018.  As a part of a 2.5 billion dollar dating industry, 40 million Americans use online dating.   Adults age 18 to 30 spend an estimated 10 hours a week on dating apps.  One out of two single people in the US has a profile on a dating app.

We Evolved in Small Groups with Few Potential Mates

Dating by mobile device may conflict with our evolutionary hard-wiring.  In an interview for “Swiped,” evolutionary psychologist David Buss explained the problem with dating apps:  “We evolved in the context of small groups ranging from 50 to 150 with limited geographical mobility. You would encounter perhaps a few dozen potential mates in your entire lifetime.  We take this small-group dating psychology and transplant it in the modern world with thousands of mates, and it triggers this short-term mating psychology in a way that never would have been triggered ancestrally.”  And with all of these options, the value of each person in the mating economy goes down.

Evolutionary Mismatch

The field of evolutionary psychology has become more interested in these instances of modern “evolutionary mismatch.”    “Since organic evolutionary processes take a long time to effect change, our minds are better suited to ancestral, pre-agricultural contexts than they are to modern contexts,” says Glenn Geher and Nicole Wedberg in their book Positive Evolutionary Psychology (2020).  Studies of pre-agricultural forms of diet and exercise (paleo fitness and movement) and ways to increase “social capital” in our cities are examples of solution-focused evolutionary psychology.  Mobile apps as currently designed may not be part of the solution.

We are engaging ancient biological parts of our behavior, but the platform is novel and unprecedented. With the rise of the mobile dating app, we are in evolutionary unprecedented waters,”  cautions Justin Garcia of the Kinsey Institute.

A Picture is Worth a Thousand Deceptions

The dating app photo, especially on Tinder, is everything.   Physical appearance overwhelms all other information and takes on a disproportionately larger role.  As described in the film by clinical psychologist Jennifer Powell-Lunder, mating strategies are evident on the apps: “men present in a very stereotypical male way – providers, hunters, puffing up their chests.  And women present in more sexual ways.”  Powell-Lunder identified a phenomenon brought on by the relative anonymity of the mobile app.  She called it the “Clark Kent syndrome.”  “Mild-mannered average guys get to feel like a Superman, powerful and sexually aggressive.”  This kind of dating is all “performative,” she says.

Male-Female Difference

Men and women use these apps differently.  Hinge CEO and founder, Justin McLeod, was interviewed in the HBO film:  “Women are more selective.  On the whole, a majority of women are looking almost exclusively for a relationship on these services.  The majority of the men are primarily looking to hook-up.”  Those looking for a hook-up have the upper hand in this new world.  Women in the documentary lamented: “Guys will have one girlfriend per network (Instagram, Twitter, Facebook, and Snapchat).”

Traditional Romantic Relationship vs. a Hook-Up

In a lecture to the Feminist Student Association at the University of Indiana, Garcia presented data from college students about which type of relationship they preferred — a traditional romantic relationship (TRR) or a  hook-up.  Sixty-three percent (63%) of the men said they preferred TRR, and 34% said they favored a hook-up.  Eighty-three percent (83%) of the women preferred TRR and just 13% wanted a hook-up.  One woman in the documentary said, “I want a boyfriend; I don’t want a fuck buddy.”  CEO and founder of Tinder, Sean Rad noted “80% of users are looking for a serious relationship.”  This is about right for the women, but not overall.  Rad might be exaggerating a big to make Tinder look a bit nobler.  In the film, females actively looking for hook-ups on Tinder were derisively called (by the men) “tinderellas.”

Men and Women Differ in Comfort Level of Hook-up Behaviors

Garcia also reported on women’s comfort level for certain hook-up behaviors compared to what was attributed to them by men (on a scale of -5 to +5).  Men overestimated a women’s comfort level with sexual intercourse and oral sex (both giving and receiving) by a significant margin.

 Design and Addiction of the App Architecture

The architecture of dating apps is built for split-second decision-making  – are you “hot or not?”

Gamification is a well-researched design feature.  Swiping produces unpredictable yet frequent rewards – intermittent reinforcement based on the operant conditioning studies of B.F Skinner.  (Pigeons are the precursors to swiping-obsessed GenZers.) Visual pop-ups show a match with fanfare and a dopamine rush.  Yet, anticipation is a greater rush than the reward.  Like gambling addiction, swiping or sexual compulsion is more of a “high” than a genuine pleasure.

Effects On Emotional Health and Relationship Satisfaction

“I hate it that everything depends upon how you look,”  said a young woman from Austin.  One clinical expert interviewed by HBO said, “mobile apps cause us to feel like we are always dating, always promoting your product.”   A black woman from New York City spoke of emotional abuse from an online relationship.  “I was heartbroken.  I feel like he treated me like an object almost.”   A college student in Santa Cruz gave a male perspective:  “if you do care, you have to not show it; you act like you don’t.”

Women overall are wary and disappointed in the digital online environment.  Men are pleased and discouraged by dating using the apps.

The Hinge Difference?

McLeod says Hinge is “designed to be deleted.” Unlike his swipe-centric rivals, McLeod doesn’t want his user base to stay endlessly glued to the app. McLeod has drug addiction in his history – he understands this problem.  McLeod described Tinder “as a numbers game where users were betting to find a match after never-ending swipes.  It just turned into a game in a casino.”  McLeod realized that it was time for love-seekers to put themselves out there.  “It is about vulnerability and opening up and softening your edges.”

Hinge no longer conforms to the swipe template. Instead, users (as of in 2019) have to answer a choice of three prompts that encourage sensitivity.  Instead of the “hot selfie,” Hinge encourages “photos that lend themselves to a conversation.”

Hinge Inspired Modern Love

McLeod’s own love story is depicted in Episode 2 of Amazon’s highly praised Modern Love.   Dev Patel’s character builds an app called Fuse and reconnects with his soulmate just before she was supposed to marry another man.  In real life (IRL), McLeod flew to Europe and declared his love for his long-lost soulmate, Kate, one month before her wedding to another man.  McLeod and Kate got married and have a child.  McLeod’s real love story informs his approach to Hinge, although Hinge has been fully acquired by dating monopolist IAC Match Group, which also owns Tinder.

Does Bumble Empower Women?

“Bumble is a site where only women are going to make the first move,” explains a female Bumble executive interviewed for the documentary.   But does Bumble empower women?   Zoe Strimpel, a dating historian and columnist for The Sunday Telegraph, said, “Bumble is just codifying that women have to do more work – have the burden of dating – the communication and emotional work.”   Regardless of the questionable premise (IMO) that women have “the burden of dating,”  Strimpel “does not see how Bumble fixes the mistakes that Tinder has made.”

Gay Apps Maybe Provide a Needed Service

The documentary explains how dating apps and the internet generally have given gay men and lesbians more access to each other.  Garcia said the internet is good for the LGBTQ community in that regard.  But one man complained that it has cut down on “cruising” in person, which he described as fun and, more importantly, part of gay culture.  One gay Austinite said that when he sees a guy in a bar, he immediately goes to Grindr to find out more about him and even communicates to him through the app as he stands just 30-feet away.  One gay site gets a favorable mention.  SCRUFF is supposedly a top-rated and reliable app for gay, bi, trans and queer guys to connect. 

Physical Risk in the App Ecosphere

Online-related sexual assault has multiplied over the years.  According to general news and wellness site, Phactual, one out of every ten sex offenders uses online dating to meet people.  A 2018 Buzzfeed article told the story of an alleged “Tinder Rapist” who said he felt entitled to sex from a female he’d met on the dating app because “she wanted it and the Tinder app was for that.”

“Are dating apps contributing to rape culture?”   Mandy Ginsberg, CEO of IAC Match Group, avoided answering that question in the documentary, citing the company’s focus on safety tips for women.  (IAC Match Group owns Match, Tinder, Plenty of Fish, OK Cupid, Black People Meet, Senior People Meet, and now Hinge.)

Revenge Porn is a Nasty Artifact

As starkly depicted in the HBO documentary, sexting is also a risk.  One in 25 Americans has been the target of revenge porn – the unauthorized use and spread of nude photos.  Instagram photos of all types may lend themselves to reputation damage, even affecting employment and careers.  Tinder co-founder and CSO Jonathan Badeem seemed sympathetic but had no concrete plans (at the time of filming by HBO) to stop revenge porn or reduce the incidence of sexual assault associated with the app.

Future of the Apps and Mobile “Dating” Experience

“The use of apps will not slow down because there is too much money to be made,” according to Adam Alter, a social psychologist at New York University. He added, “the apps are getting better and better at designing experiences that are addictive.” Furthermore, virtual and augmented reality apps are coming!

 Through Eyes of Alex and Kyle

Midway through the documentary, we are introduced to an adorable couple in New York City.  Alex and Kyle found each other on an app and felt authentically connected as friends and lovers.  They had great simpatico and playfulness — enough trust and comfort to try to be with a third person.  (Alex, the woman, is a self-proclaimed “heteroflexible”).  They swiped together as a couple, looking for a woman to join them.  It was exciting and fun.  Their coupling seemed to work.  At the end of the documentary, we see them for the third time. Kyle and Alex sat on the bed and reflected on their relationship together. Now, it seems, they are not a couple.

 But Love is Sweet

 Kyle became distant, and he does not know why.  Kyle hooks-up with other women on Tinder. Alex seemed sad and resigned.  She wanted a real relationship with Kyle.  She tells the camera that expressing love is sweet. She can have other sexual encounters if she wants to (and does), but we get the impression that she just wanted a committed relationship with him.

“Tinder Exhausts Me”

 Alex finally says, “Tinder exhausts me but I use it to judge people, and I like to swipe.  I like doing the swiping, I always have.”  “Nothing good happens from Tinder,” says Kyle in response. Then, Alex turns to Kyle and gives him a penetrating look, “we met on Tinder.”

Summary

  • Digital apps produce a vastly different environment for short-term mating from what existed in our evolutionary past.
  • The focus on physical looks has dramatically increased in the digital environment. This change is especially significant in the overall mix of female sexual strategies.  Short-term mating for women has always put more emphasis on physical attractiveness, facial symmetry, and a man’s v-torso.  A woman’s predominant long-term strategy, which still operates on the apps, emphasizes character, resources, and commitment.
  • Young women are having a bit more casual sex because of this environment, but they are not necessarily more satisfied. (There was only one woman depicted in “Swiped” that seemed centered and comfortable with a non-monogamous lifestyle.)
  • Though women are experimenting more with casual sex and non-monogamy, 80% of women want or use the apps in hopes of developing a long-term relationship.  This confirms the hard-wired difference of mating strategies between men and women.
  • Few long-term relationships come from dating app hook-ups.
  • Women overall are wary and disappointed in the digital online environment.
  • Men are pleased and discouraged by dating using the apps.
  • HBO’s documentary does not explore the sex-ratio difference on college campuses (more women than men) that has also contributed to changes in the female approach to casual sex and intrasexual competition between women, and is the cause of multiple partners for men.
  • Women rightly fear rape and other kinds of abuse (physical and emotional) or assault.
  • Reputation damage and revenge porn have dramatically increased with the use of dating apps and the reach of the internet.

 

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The Male Sexual Deficit: Social Fact of the 21st Century

The Male Sexual Deficit: Social Fact of the 21st Century

the”‘“Feminists insist that men’s greater demand for sexual activity is an outdated myth. Recent sex surveys prove the myth to be a fact and one that the social sciences have yet to address.”  

~ Catherine Hakim

Men want more sex than women (in statistical aggregate with individual differences).  This is not a criticism of men or a judgment of women.  This is just the way it is. We were designed this way over eons of time. The fact that men want more sex than women comports directly with the evolutionary evidence of sexual selection and the science of human mating. It reflects and is predicted by the difference between the sexual excitation system dominant in men versus the sexual inhibition system dominant in women.  (See prior posts.)  Only the questioning of this fact seems surprising.

Unsatisfying Sex Does Not Account for the Deficit

I have recently written about why heterosexual women may not want the sex they are being offered (Why Women Are Bored in Monogamous Relationships and Addressing Barriers to Female Sexual Pleasure – Let’s Get Educated).  But the prospect of unsatisfying sex does not account for the disparity of desire between men and women and ultimately the male sex deficit.  The “male sexual deficit” (also called surplus male sexuality) is the condition of men not getting enough sex.

The Male Sexual Deficit is Caused By:
  1. Women generally have a lower sex drive (sexual motivation) — the predominance of their sexual inhibition system (responsive desire). Men have a higher need for sexual activity and a need for more variety of sexual partners.
  2. Women find only a few men “suitable.” Female selectivity is a critical sex difference and evolutionary adaptation. The criteria of mate choice in a woman’s long-term mating strategy reveals “choosiness” for a narrow cluster of traits that define a “suitable” mate.  Related to “suitability,” there is a wide attraction disparity between men and women; men find a majority of women attractive; women find the majority of men unattractive.  (This fact is mostly undiscussable in the dating advice marketplace.)
  3. A severe supply and demand imbalance in the mating market that disadvantages men – the result of a lower female sex drive and “choosiness.” Available and willing women are in short supply compared to the significant demand by interested men.
  4. Women often do not want the “kind of sex” offered by their male partner, causing relative boredom, disinterest, and reduced sexual activity.
  5. There is an increase in the percentage of women who identify as lesbian or bi-sexual in practice.  Female sexual fluidity is growing. Women’s inherent sexual plasticity is leaving men on the sidelines.
Male Sexual Deficit in the Twenty-First Century

This post is named after and draws from a paper written by British sociologist Catherine Hakim.  It also captures the wisdom of evolutionary psychologists pertinent to this topic, primarily the work of David Buss. (See bios in the Appendix.)

Hakim describes the sexual deficit among men as a universal phenomenon in modern societies.  This phenomenon “emerged” during her research on sexual cultures, internet dating, and marriage markets.

Harbingers and Evidence of the Deficit: Sex Differentials Around the World

“The sex differentials in sexuality remain large, substantively important, and are found in all cultures, including the sexually liberated societies of Scandinavia.”  ~ Catherine Hakim

Hakim reviewed studies conducted worldwide over the last 30 years and reported a long list of “sex differentials” between men and women.  Below are just a few examples from various countries.

  • The most commonly reported sexual problem is the lack of interest in having sex.  In all countries, the rate of women is at least double the rate for men at all ages.
  • Men are four times more likely than women to agree to sexual approaches from their partner (38% of men versus 11% in Finland).
  • A majority of women regard love as a precondition for sex, while a majority of men reject the idea. (Sweden)
  • Men express two to ten times more enthusiasm for trying every variation in sexual activity. (Britain)
  • Men are three times more likely to prefer several concurrent lovers. (Estonia and Sweden)
  • Regular masturbation is two to three times more common among men in Sweden, Australia, Finland, and Britain.
  • Men are three times more likely to have frequent sexual fantasies and to use erotica of all kinds.
  • Casual sex was regarded as acceptable by a two-thirds majority of men vs. a one-third majority of women in Britain.
  • Men reported extra-marital affairs twice as often as women. Only in France, Spain and Italy do men and women begin to converge in their acceptance and practice of affairs.

A cross-cultural study of 29 countries showed that sex differences in desire and sexual interest are universal, but the gap between men and women is larger in male-dominated cultures than in liberal western democracies.

Male Sexual Deficit in the United States

Denise Donnelly (University of New Hampshire) analyzed a sample of 6,029 married persons in the United States to determine the correlates of sexual inactivity in marriage and to see if sexually inactive marriages were less happy and stable than those with sexual activity.  Donnelly found that about 1 in 7 marriages in the U.S. are largely “sexless” — characterized by little to no sexual intimacy (“dead bedrooms” is a popular subreddit). Typically, this happens because one member of the relationship refuses to engage in sex.  It is most often the woman.  Although sexually inactive marriages are not uncommon, Donnelly concluded that they are not happy or stable marriages. Thus, lack of sexual activity may be a danger signal for many marriages.

Adverse Effects of Male Sex deficit

Hakim believes the male sexual drought negatively affects society, fracturing families and potentially leading to violence and crime.

Hakim says, with some controversy, that the male sexual deficit helps to explain sexual harassment, sexual violence, rape, infidelity, and a rising demand for commercial sexual services that is almost exclusively male.  (Below, I will provide some contrary and perhaps more reliable evidence about sexual coercion from evolutionary psychology.)

Commercial Sex Services Demonstrate the Deficit

Commercial sex services have existed in all societies, whether they are treated as legitimate or not.  The male sexual deficit explains why, in all societies, customers for the sex industry are men almost exclusively. For instance, in Greece and Italy, 40% of men have bought sexual services compared to less than 1% of women.

An International Labor Office (ILO) study of the sex industry found that demand for erotic services grows as a country (or individual) becomes more affluent; therefore, overall demand is rising.

Demand for such services from women is minuscule in all cultures, and this is not due to women’s lack of economic resources.  Some poor men will find the money if necessary but affluent women are rarely tempted. The sex industry has always been highly stratified, with a diversity of services at all price levels, because male demand exists at all income levels.

Sex Work is Lucrative But Not a Cure for the Deficit

Men’s ambivalence towards women working in the sexual entertainment industry may be because women exploit men’s “weakness” effectively. Women can earn 10 – 40 times more than in conventional jobs.  The sex industry is the sine qua non of the “erotic-economic” bargain but does not significantly depress the male sexual deficit.  (See “Erotic-Economic Bargain — the Ultimate Exchange in the Mating Economy” in Dynamics in the Mating Economy – Domain #1 of Male-Female Difference.)

Cause #1 of the Deficit:  Lower Female Sex Drive

“This gap in desire between men and women is seen in every country and culture where sex surveys have been done. The received wisdom that men always want more sex than their wives is not a stereotype, but a fact.” ~ Catherine Hakim

Measure of Desire in Developed Countries

Inside Hakim’s data set, Finnish sociologist and sexologist Osmo Kontula identified (2009) 12 measures of sexual desire (see Appendix) and offers this summary of four decades of sex research in developed countries:

  • Younger men experience sexual desire twice as frequently as women.
  • Older men experience sexual desire four times as often as women in the same age group.
  • As a result, male sexual desire is compatible with the level of desire in women approximately 20 years younger.
  • Overall, male sexual desire is manifested at least twice as often as female desire, and men would like to have sex twice as often as women.
  • The gap in sexual desire between men and women grows over time.
Female Sex Drive Is More Plastic

The national surveys on sex differences around the globe are corroborated by more detailed studies of the sex drive by Roy Baumeister and other social psychologists.  Those surveys suggest the differences in sexuality between the sexes may be due to the female sex drive being more plastic, malleable, and responsive to social influences (See Cause #5 below), whereas the male sex drive is less compliant (Baumeister, 2000, 2004).

Women’s Lower Interest Is Not a Disorder

Marta Meana, clinical psychologist and researcher in women’s sexuality, concluded (2010) that discrepancies of sexual desire within relationships are the norm rather than the exception, generally due to the woman’s lower interest in sexual activity.  She says clinicians should not treat this as a sexual disorder since very few women are distressed by their lack of desire per se.  Instead, they are worried about the impact on their relationships.

Men Want More Sex Partners – More Evidence of the Deficit

Evolutionary psychologist David Schmitt (2003) studied 16,288 individuals residing in 52 nations (2003) and found sex differences to be culturally universal without a single exception.  Men said they wanted 1.87 sex partners over the next month; women wanted only .78.  Over the next decade, men said they wanted six partners on average; women said they wanted two.  In Middle East countries, such as Lebanon and Turkey, men wanted 2.5 sex partners over the next month. In South America, 35% of men wanted more than one sex partner over the next month, but only 6% of women did.  In Japan, where levels of sex drive appear to be unusually low, six times more men (18%) than women (2.6%) wanted more than one sex partner.

Sex Difference in Rates of Infidelity is Narrowing

The infidelity rate between men and women has narrowed since sexologist Alfred Kinsey found (in 1953) that twice as many men as women had experienced at least one sexual infidelity (50% vs. 26%).  Recent studies show that men cheat with a larger number of partners, and women are choosier even in this domain, typically having a single affair.  And of those women, 70% cite love or emotional connection as the key reason for the affair. This finding points more toward the mate-switching function of female infidelity than a woman’s desire for sexual variety.  (See Mate Switching Hypothesis.) Men’s affairs are more motivated by sex with someone new, especially if they have no sex at home.

Consenting to Sex with Strangers – Sex Differences

Studies of consenting to have sex with strangers found that 75% of men approached by female confederates said “yes” to the question: “will you go to bed with me tonight?”  Nearly 100% of women said “no way” to the request from male confederates.   Most men who declined asked for a raincheck.  (The first study was done in Florida in 1989; it was later replicated in Austria, Denmark, and the Netherlands.)

“The psychological and behavioral evidence all points to the same conclusion,” says Buss, “men and women differ profoundly in their desire for sexual variety.”  (As explained in Why Women Are Bored in Monogamous Relationships, a woman may need or want a variety of experiences with the same partner.)

Unfulfilled Longings 

“The large and profound sex difference in the desire for variety is not something that merely rattles around in men’s heads,” says Buss.   “Many men are burdened by lust for a variety of different women, constant cravings that cannot ever be fully satisfied.  Sexual desire sometimes bursts forth into action.”  It explains the philandering of such men like Hugh Grant, Arnold Schwarzenegger, and Charlie Sheen, who had wives or girlfriends and presumedly were not experiencing much sexual deficit.  But “it also explains,” says Buss,  “the rage of ‘incels,’ whose sexual desires remain forever unfulfilled as they watch women they want from the sidelines of the mating market.”

Men Have a Higher Sex Drive – Period

“Evolution has equipped men with a higher sex drive,”  says Buss. This is reflected in several sexual adaptations:

  • Men become sexually aroused more easily than women, especially to visual stimuli.
  • Men have more frequent and spontaneous sexual fantasies.
  • Men spontaneously think about sex twice as often as women do every day.
  • Men desire to have sex more frequently than do women.
  • Men average 679 circulating units of testosterone; women’s average is a tenth of that.

“In short,” says Buss, “the gender differences in sex drive create a gap. The less interested person has more power over if and when sex will occur, and women are often less interested.”

Causes # 2 and 3 of the Deficit:  Female Choosiness and the Mating Marketplace

“Female choosiness – deciding who qualifies for interaction, relationship escalation, and sexual access is a first principle in human mating.  ~ David Buss

Women find few men “suitable” as mates.  Female “choosiness” coupled with a lower sex drive creates a severe supply and demand imbalance in the mating market that disadvantages men.  Women who are available and willing are in short supply compared to the great demand by interested men.  As a result, many men lose out or opt-out of the market, causing a vast “surplus” of male sexuality. It is precisely this female selectivity,” says Buss, “that creates sexual conflict, sometimes expressed as resentment by those who fall below the threshold.”

Women Liked Very Few Profiles

Buss cites a study that placed 14 fake male and female profiles on Tinder and analyzed the responses to them.   Over eight thousand (8,288) men liked the female profiles, compared to just 532 women who liked the male profiles.  Although men on Tinder swiped right on hundreds of female profiles, fewer than 1% of women reciprocated that liking.

Few Women Actually On Ashley Madison

Investigative research revealed that 99% of female profiles on Ashley Madison were fake.  In reality, although there were 20 million men actively using the cheating site, only 1,492 women, less than 1% of the total user base, actively used the site.

Examples of Female Choosiness

Buss shares the story of a female friend who tried online dating.  She was described as a successful, intelligent, and attractive academic, no doubt with high mate value. She received more than 500 responses in two weeks.  However, after the end of her exhaustive screening process, she sent only one reply out of the 500.   And after a coffee date with him, “she concluded he did not exceed threshold.”  Another woman told Buss that she used Tinder and swiped right on less than .8 % of the men she saw and met only .6 % of that group, resulting in a .005 % of the total men she saw.

Attraction Disparity – the Pernicious Underbelly of the Deficit

The choosiness and caution demonstrated by women as compared to men are reiterated in Buss’s new book:  When Men Behave Badly.  Buss found that men, on average, find women more attractive than women find men attractive.  The difference is BIG!

In a study, men rated women’s attractiveness along a bell curve.  Sixty (60) percent of the women were rated by men as “average” to “very attractive.”  The women rated only 17% of the men from “average” to “attractive.”  Women rated 58% of the men as below threshold or unattractive.  Ouch.

Eons of Sexual Selection Demonstrate the Disparity

The attraction disparity is demonstrated by eons of sexual selection for the alpha male and men’s behavioral co-evolution to acquire hierarchal power and social status to be that alpha male.  Attraction disparity gives women the upper hand in the sexual marketplace.

Men Lower Their Standards

Contributing to the attractive threshold gap is men’s willingness to lower their standards for casual sexual encounters.  Men are willing to date down when it comes to sex.

Supply and Demand Forces in the Mating Marketplace

In the human mating economy, men primarily sell, and women mostly buy; this is the predominant evolutionary dynamic. Thus, the buyer (female chooser) significantly controls the marketplace.

All mate selection behaviors are driven by supply and demand forces for sexual access to the best or highest-mate-value mates.  Fertile (and consensually most “beautiful”) women are in great demand, and the supply of men interested in them creates significant differences in behavioral dynamics – leading to a multitude of male initiation strategies, misreading of signals by women (male “over-perception bias”), and a reproductive variance curve.

Most Men Want the Same Women

Simply said, roughly 80% of men compete for 20% or less of the same (highest mate value) women in the overall mating economy.  Interested men are plentiful in this market (as driven by biological-hormonal imperatives), and receptive women are scarce.   Supply and demand forces skew odds in favor of female choice and dramatically work against the odds of a man being chosen.

Pursuer and Pursued “Are Not” The Same People

The 180% difference between a buyer and a seller in the mating-sexual economy is dramatic in its psychological impact.   It affects motivation, the origination of desire, perceptions of risk and safety, and ultimately the experience of sexual scarcity or abundance.

The psychology (lived experience) of the sexual initiator and pursuer is vastly different than the psychology of the one pursued and the one who chooses among her pursuers.  This general difference between men and women cannot be overstated. (See “We Are Not the Same People” in Appendix)

Mate Value is the “Currency” of the Deficit

Mate value (and assessed mate value trajectory of men) rules the marketplace.  Men with resources, status, and larger physical attributes (especially height) have greater mate value than men who do not.  Women’s mate value is primarily determined by physical characteristics of beauty, waist-to-hip ratio, and other signals of fertility.  Mate value drives the initial mate selection process.  Mate value includes elements of character and other preferred traits as courtship continues into the period of relationship maintenance.   But human sexuality is primarily designed to choose and access sexual partners, not keep them over time.

“In or Out of Your League”

It is no accident that we commonly rate ourselves and others on a “1-10” point scale.  While there is a tendency for both sexes to over-rate vs. under-rate themselves, we generally know if our desired partner is “in or out of our league.”   If we are a “7,” we strive to bargain successfully for a “7-9.”   Men, especially, who know they are seen as a “5” or below, lust hopelessly after unattainable women who are a “9” or “10.”  This understandable tendency is biologically, not rationally inspired.  There is painful despondency for both sexes related to the invisibility of low mate value.

Reproductive Variance – There Has Always Been a Male Sexual Deficit

“Reproductive variance” refers to the variability of reproductive success for human males and females.  More women have sex and reproduce in the general population than do men, as shown by genetic studies.  For men, the difference between men who did not reproduce (the have-nots) and the men who reproduced prolifically (the haves) is very wide.   For women, there is much less variance; most women reproduce, and the number of children they have is constrained by their biology.

Most Men are Losers in the Mating Game

DNA studies by Jason Wilder and colleagues revealed that approximately 80% of women in human history have reproduced compared to about 40% of men.  The human population is descended from twice as many women as men.

Male Sexual Deficit and Female Choice

The male sexual deficit is an expected “collateral damage” of female preferential mate choice.   Men operate as best they can within this power imbalance, and women use their “erotic capital” (a term coined by Hakim, see Appendix) to achieve their mating objectives.

Less Deficit On Campus

There are now fewer men than women on U.S. college campuses.  That gives those men a sex-ratio advantage and works against a pervasive male sexual deficit.  A sexual deficit remains for the male “losers” of mate competition on college campuses, but some men are getting laid right now that might not have 10 to 15 years ago.

Misperceptions About Mate Value – An Artifact of the Deficit

People differ profoundly in how desirable or valued they are on the mating market.  Differences in desirability create havoc in at least two fundamental ways, according to Buss.  The first centers around misperceptions.  Although both men and women can err in their self-perceived mate value, research shows that men are more likely than women to be overconfident in a variety of domains.

Men experience higher self-esteem than women – a sex difference that emerges at puberty. Men have higher estimates than women of their physical attractiveness.  Consequently, men are more likely to err in overestimating their desirability on the mating market.

Some Men Are Dumb and Dumber

                                    “So you are telling me there is a chance?”  Lloyd, Dumb and Dumber

In the movie Dumb and Dumber, Lloyd (Jim Carey) asks Mary (who is comically out of his league), “so what are my chances?  “Not good,” she says.  “You mean not good like one in a hundred,” Llyod optimistically inquires. “No, not good like one out of a million,” Mary concedes. Nevertheless, Lloyd’s optimism is undeterred.  He thinks he has a chance.

The over-perception bias among men – a belief that women may be interested in them, is a much-studied tenet of mate selection and is related to error management theory.  It is better to lose a potential mating opportunity with a direct pursuit (a false positive) than lose an opportunity by not trying (a false negative).

Everybody Wants the Best Deal in the Mating Market

According to researchers Bruch and Newman (2018), both sexes pursue partners in the mating market who are 25% more desirable than they are.  One of Buss’s colleagues asked, “why am I being pestered by men I don’t care about, but the men I am genuinely attracted to seem to show so little interest in me?”  Buss told his colleague that she is an “8” chasing after “10s” but being pursued by “6s.”

Cause #4 of the Deficit:  Women Do Not Want the “Kind of Sex” Being Offered

Repetitious, unimaginative sex by a long-term partner may produce relative boredom, disinterest, and reduced sexual activity by women.  See post Why Women Are Bored in Monogamous Relationships for discussion of this cause of the male sexual deficit.

Cause # 5 of the Deficit:  Female Sexual Fluidity is Growing

Female sexual fluidity is growing. There is an increase in the percentage of women who identify as lesbian or bi-sexual in practice.   Women are turning away from men for romance and connection; they prefer the company of women for a variety of socio-cultural reasons (e.g., memes of “toxic masculinity and the “me-too” movement).

Liberal Generation Zs – An Increasingly Fluid Population

A recent Gallup poll found one in six (15.9%) Generation Z adults (ages 18-23) identify as LGBTQ.  LGBTQ identification is lower in each older generation, including 2% or less of respondents born before 1965.  Young people who are politically liberal identify as LGBTQ at astronomical rates.  Gallup found nearly thirty-one percent (30.7) percent of Gen Z liberal adults identified as LGBTQ.

This phenomenon and female sexual fluidity is an extremely important topic for one or more future posts on this site.

Buss Disputes Male Sexual Deficit as Source of Sexual Coercion

Buss disputes that the male sexual deficit is the primary source of sexual coercion – an idea called the “male deprivation hypothesis” studied by evolutionary psychologists. Buss shares his research findings and a prolific body of research in his new book When Men Behave Badly.  Sexual coercion is more often perpetrated by high-status males than by low-status males suffering from a sexual deficit. (Buss disagrees with Hakim’s assertions on this point.)

Buss would agree that the male sexual deficit is a contributing cause of infidelity and the demand for commercial sex services because it triggers the powerful motivation by men for sexual variety.  From zero sex partners in a “dead bedroom” marriage to one or more partners outside of that marriage is a significant improvement in sexual variety.

But Male Violence and Sexual Deficit May be Linked

There is compelling evidence that overall male aggression, violence by so-called “incels” (involuntary celibate men), and mass shootings are linked to a lack of sexual relationships, male loneliness, and a condition of low status. Low status is perhaps the most salient, but all three are related.  This topic deserves separate treatment in this space and will be done along with a review of Buss’s books When Men Behave Badly and The Murderer Next Door.  Suffice to say, Hakim and evolutionary psychologists may agree on the general point about violence and the male sexual deficit.

Future Trends of the Male Sex Deficit

According to Hakim, several factors suggest that the male sex deficit will not disappear and might even grow in the 21st century:

  • A decline in the frequency of sexual intercourse (inside and outside marriage) in Britain, the USA, Germany, Finland, Japan and other countries.
  • Women’s increasing economic independence allows them to withdraw from sexual markets and relationships that they perceive to offer unfair bargains, especially if they do not want children.
  • Changes in national sex ratios towards a numerical surplus of men help women re-set the rules in developed societies. (I am dismissive of the influence of more males as an important driver of the male sexual deficit. There would be a deficit even if the sexes were equal in numbers.  Female preferential choice primarily determines the deficit.)
Conclusions

According to Catherine Hakim, the male sexual deficit in developed societies is an indisputable, universal social fact of growing importance.  The research appears to support this conclusion.

Evolutionary psychologists believe the male sexual deficit is predicted by female preferential choice in mate selection.  Also, the sexual deficit among heterosexual men helps explain why men are the principal customers for commercial sexual entertainment, most likely to have affairs, and engage in some forms of violence.

References

Anderson, E. (2012).  The Monogamy Gap:  Men, Love, and the Reality of Cheating.

Baumeister, R. (2000). “Gender differences in erotic plasticity: The female sex drive as socially flexible and responsive.”  Psychological Bulletin 126 (3): 347-374.

Baumeister, R. (2004). “Gender and erotic plasticity: Sociocultural influences on the sex drive.”  Sexual and Relationship Therapy. 19: 133-139.

Bruch, E.E. and Newman,  M.E.J. “Aspirational pursuit of mates in online dating markets.”  Science Advances, 4, no. 8 (2018).

Donnelly, D; (1993).  “Sexually inactive marriages;” The Journal of Sex Research, Vol. 30, Issue 2.

Kontula, O. (2009). “Between Sexual Desire and Reality: The Evolution of Sex in Finland.” Population Research Institute, Helsinki.

Meana, M. (2010). “Elucidating a women’s (hetero) sexual desire: definitional challenges and content expansion.”  Journal of Sex Research,  47 (2-3): 104-122.

Mustanski, B. (2011)  “How often do men and women think about sex?”  Psychology Today, December 6.

Peplau, LA. (2003). “Human Sexuality: How do men and women differ?” Current Directions in Psychological Science 12 (2): 37-40.

Schmitt, D.P.  “Universal sex differences in the desire for sexual variety: Tests from 52 nations, 6 continents, and 13 islands.”  Journal of Personality and Social Psychology, 85, no. 1 (2003).

Appendix

Kontula’s 12 Measures of Sexual Desire

  1. thoughts, fantasies, and spontaneous arousal
  2. desired frequency of sex
  3. desired number of sexual partners
  4. frequency of masturbation
  5. continuous willingness to engage in sex
  6. the emergence of sexual desire in youth
  7. seeking out experiences and initiating them
  8. desiring a variety of experiences
  9. investing resources for sex
  10. attitudes favorable to sexuality
  11. infrequent absence of sexual desire
  12. self-assessed degree of desire

Catherine Hakim

Catherine Hakim is a British sociologist who specializes in women’s employment and women’s issues.  She is currently a Professorial Research Fellow at the Institute for the Study of Civil Society (Civitas). She has published over 100 articles in academic journals and over a dozen textbooks and research monographs. 

Hakim is best known for her criticisms of many feminist assumptions about women’s employment.  Her “preference theory” seeks to provide an empirically based predictive explanation for the differentiated choices women make between paid productive work and unpaid “reproductive” work in affluent modern societies.

Hakim defines “erotic capital” as an individual’s beauty, sexual attractiveness, enhanced social integration, liveliness, social presentation, sexuality, and fertility that can provide opportunities to advance in life. Hakim says erotic capital plays a subconscious role in daily life decisions, such as career offerings, enrichment opportunities, and social networking.    Hakim asserts that current dating apps and subsequent decisions for marriage are driven by a woman’s erotic capital and a man’s economic capital.   (I have named this the erotic-economic bargain.)

David Buss

David Buss is a professor of psychology at the University of Texas at Austin.  He is the author of leading textbooks on evolutionary psychology,  The Evolution of Desire, The Dangerous Passion, The Murderer Next Door, and Why Women Have Sex, co-authored with Cindy Meson.  His most recent book is When Men Behave Badly – The Hidden Roots of Sexual Deception, Harassment, and Assault.  Buss has written for multiple publications and received numerous awards, including designation as one of the fifty most influential psychologists in the world.

We Are Not the Same People
(Steven Fearing, 2010)

You are the people of the Adored

I am the people of the Longing. 

We are not the same kind of people at all.

You are the people who receive the desire;

I am the people who feel the desire like a wound in my body. 

You are the people who receive “gifts”.

I am the people who fight other men in the material world so that gifts may be given. 

You are the people (who are not fat or ugly) who live in the act of choosing.  I am of the people who hope to be chosen.

You are of the people who choose when you want love and sex.

I am of the people who wait with longing to be chosen.

You are the people who enjoy the adoration of 50 offers.

I am of the people who are mostly lost, one among the 49 others.

You are the people who receive the gifts and the offers with no risk.

I am of the people who must constantly risk and suffer the feedback of a hundred offers avoided, discounted, or rebuked.

You are of the people who speak of no jealousy because you rarely lose love to another person who was chosen instead, and because 50 more offers to you await your response.

I am of the people who have lost you to another person many times.  That wound in my heart is a gaping, angry hole.

Sometimes the people of the longing try to fill the hole with God, with service, with drugs, or a belief in the possibility of a transformed world. The people of the longing try to fill the hole with meaning.  It rarely works to stop the longing. 

You are the people of the adored.  I am the people of the longing. 

We are not the same people.

 

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Addressing Barriers to Female Sexual Pleasure – Let’s Get Educated

Addressing Barriers to Female Sexual Pleasure – Let’s Get Educated

“Think outside her box.”

~  Ian Kerner, PhD., She Comes First

Prologue

Part of the mission of Mating Straight Talk is to explain and demonstrate the evolved behavioral sex differences between men and women.  Sex differences in mating strategies and modes of sexuality serve essential evolutionary purposes.  Recently, I have written about the difference between spontaneous desire (the sexual excitation system predominant for men) and responsive desire (the sexual inhibition system dominant for women).  I outlined how women might “turn off their brakes” (their sexual inhibition system) and maximize their responsive desire.

The research on maximizing responsive desire revealed the difference between men and women related to how novelty triggers sexual desire.  Female boredom in monogamous relationships is an unpleasant reality; it is caused (in part) by the lack of novelty and surprise.  To be clear, women are not, in general, wanting non-monogamy; they are not seeking new or multiple partners as a result of this “sexual malaise.”  But, in addition to “boredom” and the challenge of “designing” the best context for sex (with sufficient “freshness”), there are other barriers to female satisfaction.

Barriers to Female Pleasure

There is an over-reliance on sexual intercourse as a practice and as a definition of sex.  Men and women lack basic knowledge of female anatomy and pleasuring techniques.  The orgasm gap is bigger than the pay gap and has more legitimacy as a behavioral problem.  Add a toxic dose of shame, trauma, and physical pain — and it is a wonder that anyone is getting laid or enjoying it when they do.

Sexual Techniques Do Matter

My focus in Mating Straight Talk has never been on the techniques of sexual practice.  (Psychological “operations” are more interesting than the operation of a vibrator.) But techniques are relevant to the success of a sexual relationship between a man and a woman.  Sexual practices and the “gendered” psychology that “contain” those practices further illustrate the differences between men and women.

She Comes First

As most women everywhere will attest, when it comes to understanding female sexuality, most guys know more about what’s under the hood of a car than under the hood of a clitoris.  Ian Kerner’s book  She Comes First – The Thinking Man’s Guide to Pleasuring a Woman may be the definitive guide to oral sex – where the mystery of female satisfaction is solved, and the “tongue is proven mightier than the sword.”   I encourage readers, especially men, to read this book.  It addresses the over-reliance on sexual intercourse and the lack of knowledge of female anatomy.

Sex and the Frustrated Man

Also, I must acknowledge the considerable insights of author and sex educator Kaye Smith, Ph.D.  Much of this post is adapted from her article, “Sex and the Frustrated Man,” first appearing in Medium.

“Widower Fears Impotence Will Kill New Relationship” 

That was the headline of the column featuring a letter written to “Dear Abby.”  A man lost his wife, had his prostate removed because of cancer, and wanted to start a new relationship.  Worried that he could not perform sexually and be rejected, he asked Jeanne Philips, “Is it possible to have a good relationship with someone without intercourse?  Or do you think I am doomed?”

Yes — Some Women Are Fine with No Sex

Philips’s answer was revealing.  She told this man that many women would value his warmth, affection, intellect, etc. and that he would be in demand, even if he could not perform sexually.  Philips described a common state of post-menopausal female sexual desire – a “responsive desire” (as defined in earlier posts) that is happy with a non-sexual yet romantic relationship.  This is a “desire” functionally over and done; it is latent but not consciously seeking revival.

But C’mon, There is More To Sex Than Intercourse!

Most importantly, it is what Phillips did not say that was interesting, if not troubling.  Phillips said nothing to educate this man (or her readers) about the diverse world of sexual practices that do not include intercourse – that do not require an erect penis or penetration with that penis.  In this post, I will address the problem of “sex-is-intercourse” and other norms or conditions that place barriers to pleasure for women (especially) and men in their sex lives. I will also address the physiological changes that can make sex unappealing for post-menopausal women.

Why Women Lack An Interest in Sex — Revisited

In my prior post (Why Women Are Bored in Monogamous Relationships), I reported the research of Marta Meana about the loss of female libido.  Meana cited three reasons women gave to explain a lack of interest in sex: 1) the institution of marriage produces too much routine, 2) overfamiliarity of sexual practices and loss of novelty, and 3) the de-sexualization of roles – the incongruity of being a mother and a wife.

“Dead Bedrooms”

A  few studies (1) in the U.S. indicate about 1 in 7 marriages are largely “sexless” — characterized by little to no sexual intimacy (“dead bedrooms” is a popular subreddit). Typically, this happens because one member of the relationship refuses to engage in sex.  It is most often the woman.

Male Sex Deficit

In a controversial paper on the male sex deficit, Catherine Hakim (former London School of Economics professor) cited several worldwide studies conducted over the last 30 years that found women reported less sexual interest, lower desire, and more conservative behavior. About 30% of women struggled with low sexual desire compared with 15% of men, and it was the most commonly reported female sexual problem.

“The sex differentials in sexuality remain large, substantively important, and are found in all cultures, including the sexually liberated societies of Scandinavia.” — Catherine Hakim

Kaye Smith (“Sex and the Frustrated Man”) is a strong advocate for female sexual capacity and empowerment.  She agrees with Hakim:   “I believe there is enough research data to support the idea that men overall do report higher rates of libido, sexual interest, and motivation than women and are probably often frustrated with the amount of sex they’re having.”  (Stay tuned for my post on May 11 for further discussion of “dead bedrooms” and the “male sex deficit.”)

Pleasure Roadblocks

Some sexual norms act as roadblocks to women.  A woman can be compromised in her ability to enjoy sex, talk about her desires, feel comfortable in her body, demand sexual equality, or even know when she is turned on. If women do not develop a strong connection with their sexuality, it can play out in the bedroom as sexual apathy.

“Crappy sex is like chowing down on Big Macs as your main source of nutrition.  It does a number on your libido like the one fast food does on your heart.”  ~ Kaye Smith

Problematic roadblocks include:

  1. Sex-is-intercourse
  2. “Clitphobia”
  3. Sexual “lockjaw”
  4. Trauma
  5. Pain
1. Sex-is-Intercourse

In my March 29 post, Turn Off the Brakes!  Making the Most of Female Responsive Desire, I shared the advice of Emily Nagoski that adding sexual novelty does not need to include new techniques or new toys.  True enough.  But it could include new techniques and toys — and it may require some!  As I explained in Why Women Are Bored in Monogamous Relationships, women need a variety of stimulation for sexual fulfillment (from the same man).  The same sex over and over, especially if it is intercourse, could be a barrier to sexual satisfaction for some women.

“I Did Not Have Sex With That Woman!”

When former president Bill Clinton was accused of sexual impropriety, he insisted with a straight face that “He DID NOT have sex with that woman” (Monica Lewinsky) because all she did was “blow” (fellate) him.

Today, if we asked a thousand straight teenagers and young people, “What is sex?” most would probably say vaginal intercourse — usually to male orgasm.  Note to “Dear Abby” — that is sexual reductionism at its finest.

Vaginal Intercourse is Overvalued

Vaginal intercourse is overvalued, while other sex acts are undervalued. Sexual reductionism is deeply problematic for female sexual pleasure and has a ripple effect on how we think about sex.

Why is “Intercourse-equals-sex” Problematic?
  • Most women can’t come from penetration alone.
  • Clitoral stimulation winds up as a mere appetizer to the main meal of intercourse, which drastically reduces female sexual pleasure.
  • Many men aren’t good at intercourse due to premature ejaculation, erectile dysfunction, or bad technique.
  • Some women experience sexual pain from intercourse. Sexual pain is a widespread problem for women, is rarely discussed, and often increases with age.
  • “Sex-is-intercourse” ignores the vast array of other sexual practices and aids: the use of lips, tongue, fingers, and vibrators (what author Valerie Frankel calls “outercourse”) — as well as dildoes, plugs, and other sensorial “toys.”

The sex-is-intercourse norm leads to the marginalization of all acts that aren’t about a penis in vagina (PIV).  Ian Kerner says, “cunnilingus is not foreplay, it’s coreplay.”

2. “Clitphobia”
Where’s the Clitoris?

Often, the clitoris is nowhere to be “found” because of a lack of identification and naming.  This starts when a baby girl is born, and we mislabel her anatomy as a “vagina.”  The vagina is the birth canal; it’s not the correct term for visible lady parts.  The correct term is “vulva.”   The primary female sex organ is the clitoris, the equivocal organ to the penis.

Never Heard of It

In a study conducted jointly by Minnesota State and Royal Roads Universities on clitoral knowledge, researchers found that most participants had never heard of the word “clitoris” until they were well into their teens — often after becoming sexually active. One young woman said, “I don’t remember ever being told that a clitoris is a normal part of a female’s body.”  We apparently have a fear of the clitoris, and in some parts of the world – extreme loathing as well.  Female circumcision (clitoridectomy) occurs in parts of Asia and Africa for cultural and religious reasons.

Clitoral Landscape

In The Clitoral Truth, author Rebecca Chalker delineates eighteen parts of the clitoris based upon the research of the Federation of Feminist Women’s Health Centers.  Most well-known and perhaps most important in “outercourse” is the clitoral glans or head of the clitoris, which has 8,000 nerve endings, twice as many as in the head of the penis and more than any other part of the human body.  Inside the vulva are the legs of clitoris that flare downward like a wishbone on either side.  The “legs” are surrounded by erectile tissue known as the twin “clitoral bulbs.”  Even lesser known is the “urethral sponge” that lies on the ceiling of the vagina.

There is no Specific G-Spot 

According to Kerner and other sex educators, “the G-spot is nothing more than the roots of the clitoris crisscrossing the urethral sponge.”  Nicole Prause, an acclaimed neuroscientist and sex researcher on sexual stimulation, says the anterior wall of the vagina does not have any heightened area of sensitivity that can trigger orgasm – there is no G-“spot.”    A lot of fuss has been made about the difference between a clitoral orgasm and a G-spot orgasm.  Although the urethral sponge is attached to the vaginal ceiling, it is considered an integral part of the clitoral network, says Kerner:  “A G-spot orgasm, like all female orgasms, is a clitoral orgasm.”

The Orgasm Gap

Since a woman’s clitoris “does not exist,” it has received inadequate attention in the bedroom. Which leads to the “orgasm gap.”  Depending upon who you read, 10-26% of women are not orgasmic at all.  Over 60% of women who are orgasmic are not happy with how often it occurs.

According to one study (2) (see “Differences in Orgasm Frequency” in Appendix), while 75% of men routinely orgasm during a sexual encounter, only 29% of women do.  Sixty-five percent of straight women were orgasmic compared to 95% of straight men.

Orgasms with Intercourse

Women can receive clitoral stimulation by penile penetration that presses against the clitoral glans and hood and by possible stimulation of the legs of the clitoris or urethral sponge.  But the heavy lifting for clitoral stimulation leading to orgasm is stimulation to the glans and clitoral hood by practices other than intercourse.  Michael Castleman of AARP says only 25% of all women reliably have orgasms during intercourse. “That means 75% of women of all ages must have direct clitoral stimulation to experience orgasm.”

Orgasm Gap Disappears with Masturbation

The orgasm gap disappears during masturbation and same-sex encounters. Sex researcher Shere Hite found that women who masturbate regularly orgasm 96% of the time.

The orgasm gap occurs for one simple reason: neither the woman nor her partner give the clitoris its due attention. They both expect a female orgasm to arrive the same way as a male orgasm – by intercourse. But it doesn’t, and she doesn’t say anything.

3. Sexual “Lockjaw”

Why don’t women say anything? Why do women continue to tolerate the intolerable? Women put up with a lot: pressure to have sex, hapless foreplay, no orgasms, and pain.  So why do women have “sexual lockjaw?”  One word says Smith:  “shame.”

Shame

Writer Yael Wolfe (“What Sexually Frustrated Men Need to Understand About Their Partners,” Medium, 2019) describes how women have been a primary target of our culture’s sexual shaming.  “We’ve been shamed for our body size, for having body hair, for having smelly vaginas [vulvas], for expressing desire, for not expressing desire, for masturbating, for not masturbating, for our sexual fantasies.  You need to understand how hard it can be to allow our bodies to move in ways that will bring us pleasure.”

She Doesn’t Want to Hurt Her Male Partner

Toxic sexual shame for women means she turns herself into a pretzel for the straight male orgasm — no matter the cost to her emotionally or physically.

One of the biggest problems with “hetero-sex” is the idea that a woman’s satisfaction is her partner’s responsibility, and if he can’t bring home the bacon, he’s not a man. The male ego can be fragile and insecure and can be both aggressive and defensive in bed.  Most women are socialized to prioritize their relationships even at the expense of their own needs.  Women keep their mouths shut to avoid making male lovers feel inadequate and to avoid shaming them.  However, when women stay silent, desire can go dormant and eventually disappear.

4. Trauma

Many women experience trauma. Sexual abuse is rampant in our society. One out of 6 women will experience a rape or an attempted rape in their lifetimes, according to the Rape, Abuse, and Incest National Network (RAIN). Survivors are more likely to report distress, experience PTSD, and contemplate suicide than non-survivors.

Sexual abuse can have a profound impact on sexuality. According to a study of 1664 women, those who had been abused reported more issues with body image and expressed more discomfort getting undressed in front of a lover. They also used contraception less often and reported more sexual and relationship dissatisfaction.

Close Contact Can Be Triggering

Sex involves close intimate contact, which can be a trigger for some people. Being touched might reactivate the anger experienced from abuse or molestation.

Survivors often check out of their bodies and disassociate while being abused.  Disassociating can be a way of handling an unbearable trauma. Unfortunately, while this helps them survive at the time, it can linger as a side effect.  Leaving your body behind while you float in the ether isn’t a recipe for a passionate, connected sexual experience.

5. Female Pain

Pain During Vaginal Intercourse

A study by Debby Hebernick (3) and colleagues found that 30% of women and 7% of men reported pain during vaginal intercourse.  Most of the reports of pain were mild and short duration.  About 72% of women and 15% of men reported pain during anal intercourse.  Women reported more moderate or severe pain than did men.  Researchers concluded that “large proportions of Americans do not tell their partner [have lockjaw] when sex hurts.”

According to the North American Menopause Society, up to 45% of postmenopausal women find sex painful due, in part, to increased vaginal dryness and thinning vaginal tissue caused by falling estrogen levels.

Conditions Causing Pain

Pain can occur for many reasons.  Several poorly understood medical conditions can wreak havoc on a woman’s sex life: including vulvodynia, lichen sclerosus, and pudendal neuralgia.  (See Appendix).

Irritable bowel syndrome (IBS) can also cause pain for women during deep coital penetration.  Women with IBS also report a lack of sexual desire and difficulty getting aroused.  Lack of arousal can lead to insufficient lubrication.  (IBS is 1.5-3 times more common in women, but it can also cause premature ejaculation or erectile dysfunction in men.)

Sometimes pain occurs because of an overly tight pelvic floor or hormonal birth control. The pill reduces testosterone, which can be implicated in the most common sexual pain problem in premenopausal women: provoked vestibulodynia, a form of vulvodynia.

Conclusion

A significant barrier to sexual pleasure for women is an over-reliance on sexual intercourse as a practice.  Men and women lack basic knowledge of female anatomy and pleasuring techniques.  Let’s get educated about “outercourse” and create an environment where it is easy and natural to talk about sex.  Men will also have more pleasure when women have more sexual agency.  Shame is unnecessary!  In a world with courageous and compassionate straight talk about sex, trauma and pain can be reduced.  Let’s bring down the barriers.

References

  1. Donnelly, D; (1993). “Sexually inactive marriages”; The Journal of Sex Research, Vol. 30, Issue 2.
  1. Frederick, D., et al. (2018) “Differences in Orgasm Frequency Among Gay, Lesbian, Bisexual and Heterosexual Men and Women in a U.S. National Sample.” Archives of Sexual Behavior, 47, 273-288.
  1. Herbenick, D. et al., “Pain experienced during vaginal and anal intercourse with other-sex partners: findings from a nationally representative probability study in the United States.” Journal of Sexual Medicine, (2015), April, 12 (4): 1040-51.

Appendix

 

Female Pain – Physical Conditions that Prevent Sexual Pleasure

Vaginal Atrophy

According to the Mayo Clinic, vaginal atrophy (atrophic vaginitis) is thinning, drying, and inflammation of the vaginal wall.  Vaginal atrophy occurs most often after menopause when a woman has less estrogen. It not only makes intercourse painful but also leads to distressing urinary symptoms.  Because the condition causes both vaginal and urinary symptoms, doctors use the term “genitourinary syndrome of menopause (GSM)” to describe vaginal atrophy and its accompanying symptoms.

Not all menopausal women experience GSM.  Regular sexual activity (with or without a partner) can increase blood flow and help maintain healthy vaginal tissues.  Treatments include vaginal moisturizers, water-based lubricants, topical forms of estrogen, and other therapies.  Seek the advice of a trusted specialist to explore all options.

Vulvodynia

Vulvodynia is chronic vulvar pain without an identifiable cause.  The location, constancy and severity of the pain vary.  Some women experience pain in only one area of the vulva, while others experience pain in multiple areas. The most common reported symptom is burning.  Pain at only one site surrounding the vaginal opening is called localized vulvodynia, or Provoked Vestibulodynia (PVD), and occurs during or after sexual intercourse, tampon insertion, or gynecologic exam.

How Hormones Impact Women’s Sexuality

From: “The Biochemistry of Lust: How Hormones Impact Women’s Sexuality,” Medium, October 6, 2019.

Kaye Smith, Ph.D. tells the story of estrogen, progesterone, testosterone, and DHEA and how hormones work in the female body.  She discusses how much a woman’s desire issues are hormone-related and how hormone replacement (HRT) works.

Differences in Orgasm Frequency – (from study Abstract; see reference above.)

There is a notable gap between heterosexual men and women in the frequency of orgasm during sex.

Researchers examined how 30 different traits or behaviors were associated with frequency of orgasm when sexually intimate during the past month.

Participants included a large U.S. sample of adults (N = 52,588) who identified as heterosexual men (n = 26,032), gay men (n = 452), bisexual men (n = 550), lesbian women (n = 340), bisexual women (n = 1112), and heterosexual women (n = 24,102).

Heterosexual men were most likely to say they usually-always orgasmed when sexually intimate (95%), followed by gay men (89%), bisexual men (88%), lesbian women (86%), bisexual women (66%), and heterosexual women (65%).

Compared to women who orgasmed less frequently, women who orgasmed more frequently were more likely to: receive more oral sex, have longer duration of last sex, be more satisfied with their relationship, ask for what they want in bed, praise their partner for something they did in bed, call/email to tease about doing something sexual, wear sexy lingerie, try new sexual positions, anal stimulation, act out fantasies, incorporate sexy talk, and express love during sex.

Women were more likely to orgasm if their last sexual encounter included deep kissing, manual genital stimulation, and oral sex in addition to vaginal intercourse.

 

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Why Women Are Bored in Monogamous Relationships

Why Women Are Bored in Monogamous Relationships

“Between two evils, I always pick the one I never tried before.” ~ Mae West

In my last post, (Turn Off the Brakes! Making the Most of Responsive Desire), I shared the advice Emily Nagoski gives to couples to improve their sex life.  Nagoski and other sex educators describe the dominant mode of women’s sexuality as “responsive.”  Women need sufficient sexual stimuli and an appropriate context to move from a place of neutrality to being aroused and desirous of a sexual connection. Nagoski recommends that couples raise their heart rate together or go deeper emotionally to trigger desire instead of creating novelty through new sex toys and techniques.  That is good advice.  But make no mistake, women need more novelty than men in an ongoing sexual relationship.  Men have a lower threshold for sexual motivation and stimulation, and their orgasms are more predictable.  Women need more varied stimulation than men, and their orgasms are definitely not assured.

In fact, there is an emerging trend related to female sexuality in an ongoing relationship.  As the headline from an Atlantic article succinctly put it, women are “The Bored Sex.”

“Female sexual boredom could almost pass for the new beige.” ~Wednesday Martin (Atlantic)

Variety and Novelty – Sex Differences

Men are neurologically built to desire a variety of partners, more so than women.  Women are built to need and want more variety of stimulation (physical and emotional) from one man over time for sexual fulfillment.  In a monogamous pair bond, it is the woman, more often than the man, who will need more diverse stimuli and breaks from routine in order to be aroused and orgasmic.

Mating Science Background

Men want a variety of partners as dictated by the foundational predominance of a short-term sexual mating strategy. (See “Coolidge Effect” in Appendix.)  Women prefer a specific singular partner as dictated by their predominant long-term sexual strategy and need for parental investment.  Alfred Kinsey: “There seems to be no question but that the human male would be promiscuous in his choice of sexual partners throughout the whole of his life if there were no social restrictions.  The human female is much less interested in a variety of partners.”

Spontaneous vs. Responsive Desire – Accelerator and Brake

Men (in aggregate) need less variety and novelty in an ongoing sexual relationship than women do because of their predominant “spontaneous” sexual response and a sex drive that accelerates with pursuit.

Women (in aggregate) need more novelty and variety in an ongoing relationship because of the fragility and complexity of their predominant “responsive” desire mechanism that often “brakes” out of caution.  (See Appendix for “Out-of-Sight-Out-of-Mind Responsive Desire” and “Supply and Demand Influences on Responsive Desire.”)

It’s Not the Sex She Wants

Manhattan psychiatrist, Andrew Gotzis, was treating a straight couple in their 40s; they had been together close to 20 years.  They reportedly had sex three times a week.  (Quite above the normal for a couple in a relationship of that duration.) The woman had orgasms but was still dissatisfied.   As Gotzis described the situation, “The problem is not that they are functionally unable to have sex or to have orgasms.  Or frequency.  It’s that the sex they’re having isn’t what she wants.” The woman wants to be wanted by her partner in that “can’t-get-enough-of-each-other-way that experts call “limerence” – the initial period of a relationship when it’s all new and hot.

Habituation to Stimulus

This woman may be an idealist, unrealistic, selfish, or entitled.  But her sexual struggles in a long-term relationship, orgasms, and frequency of sex notwithstanding, make her normal.  Although most people in a sexual partnership end up facing the conundrum biologists call “habituation to stimulus” over time, a growing body of research suggests that heterosexual women are likely to face this problem earlier in a relationship than men. Men seem to manage wanting what they already have, while women struggle with it.

Don’t Move In With Your Boyfriend

In a study of 11,500 British adults aged 16-74,  women were more likely to lose interest in sex after one year of cohabitation.  Newsweek (2017) reported this study and others with the cautionary title addressed to women:  “Moving in with Your Boyfriend Can Kill Your Sex Drive.”   “Women living with a partner were more likely to lack an interest in sex than those in other relationship categories.”

A 2012 study (Journal of Sex Marital Therapy) of 170 men and women aged 18-25 found that women’s desire, not men’s, was negatively affected by relationship duration after controlling for age, relationship satisfaction, and sexual satisfaction.

Female Desire Tanked in Germany and Finland

Two German longitudinal studies, published in 2002 and 2006, showed female desire dropped dramatically after 90 months while male desire held relatively steady.  Women who did not live with their partners seemed to avoid the “effects of overfamiliarity.”

And a seven-year Finnish study (2016) of more than 2,100 women by Annika Gunst found that women’s sexual desire varied depending upon relationship status.  Those in the same relationship reported less desire, arousal, and satisfaction.

Wanting Monogamy and Having Desire Are Different

Many, if not most women, want monogamy.   But as Wednesday Martin wrote for the Atlantic, “wanting monogamy isn’t the same as feeling desire in a long-term monogamous partnership.”

Women’s Lower Baseline Libido

There is evidence that women have a lower baseline libido as measured by the frequency of sexual thoughts, fantasies, masturbation, and desire for sexual activity.  Psychiatrist and sexual health practitioner Elisabeth Gordon reported that women disproportionately presented with a lower sexual desire than their male partners after a year or more and in the longer term.  (See “Sex Drive Defined” in Appendix.)

Just Not the Same Sex Over and Over

However, Gordon says women “regularly start relationships equally excited for sex.”  As Martin puts it, “women in long-term, committed heterosexual partnerships might think they’ve gone off sex – but it’s more that they’ve gone off the same sex with the same person over and over.

“When couples want to remain in a monogamous relationship, a key component of treatment is to help couples add novelty,” Gordon advised.  (Women are the primary consumers of sex-related technology, lubricants, and of course, lingerie.)

Long-term Relationships Are Rough On Female Desire

Author and sex researcher Marta Meana says, “long-term relationships are rough on desire, especially female desire.”  Meana and colleague Karen Sims conducted a qualitative study on 19 married women (Journal of Sexual Martial therapy) and found that most women were pleased with their partners – just not their sex lives.  Three interrelated reasons emerged to explain participants’ loss of libido.

Three Reasons for Female Libido Loss

While female sexuality generally prefers emotional connection and familiarity to thrive, Meana discovered that institutionalization of the relationship, overfamiliarity, and de-sexualization of roles in a long-term heterosexual partnership could mess with female passion.

1. Institutionalization

For many of the women studied by Meana and Sims, marital sex was a snooze.  They were simply bored with the routine of ever-available marital sex. As described by Kaye Smith in Married Women Talk About Why They Don’t Want Sex, “bed-breaking premarital sex can dwindle to Saturday morning missionary-only encounters hurriedly sandwiched between Junior’s soccer game and Fluffy’s deworming.”  It is too sanitized and socially sanctioned.  And obligation to have sex is a guaranteed buzzkill.  If you are expected to make your partner sexually happy, it is a turn-off.

2. Familiarity Breeds Contempt

The second issue that the women complained about was over-familiarity.  It was the romance of early love, the pre-relationship dating days with all its novelty, anticipation, and uncertainty that they longed for the most.  “Familiarity breeds contempt” is never more true than in the bedroom.  Another buzzkill is doing the same thing, the same way, every time.   One woman in the Meana study said:  “When you are married, you know exactly how your husband is going to touch you.  There is a comfort with each other, but it’s not as exciting . . . the desire is lost.”   Many women talked about how they could predict what their husbands would do next and in what order.

“You Just Gotta Stop”

As one exasperated 33-year old woman told her husband: “things like grabbing me and touching me would really get me excited (in the past).  But doing the same things now completely turn me off.   “You cannot just grab my breast like that anymore – it no longer turns me on – you just gotta stop.”

If you know what will happen next, your brain (and other body parts) say “why bother?” Desire is fueled by the neurotransmitter dopamine, which rises in response to novelty and anticipation.

3. De-sexualization of Roles and Maternal Sensory Overload

Most of the women spoke of being absolutely depleted by their to-do list.  And sex did not have priority on that list. (This is evidence of responsive desire).  Also, many felt there was an incompatibility between the role of mom and the role of “vixen.”  Interestingly, for mothers of small children, the constant tactile demands of caring for a child left them feeling “over-touched” – on sensory overload – and not in the mood for more skin contact.

Paradox and Complexity of Female Desire

Female sexual response is fragile and complex with opposing or paradoxical elements active, side-by-side, at any given moment. Female desire is enhanced by arousing ambivalence but in a manageable way.  Too much ambivalence, and you are left to feel too anxious; too little, and you are bored.

Women Want to Be Wanted More than Anything Else

Smith says women are socialized to romanticize sex.  Women want to be wanted – often more than anything else.  Women fantasize about being the object of a hot stud’s desire (ala Fifty Shades of Grey).  But, in being the object, women paradoxically assume power.  The rape fantasy is all about being desired; it is NOT about being defeated or abused.

What Can Be Done to Turn Women On?

Certainly, socializing women to be passive in the bedroom doesn’t work and leads to sexual disappointment and boredom.  There is still an education problem.  Women are not told about their anatomy; they masturbate less than men and often have sex based on what works for men.  (According to research, only 29% of women always have an orgasm during sexual intercourse, in comparison to 75% of men.)

Life-Long Hot Sex is Not Realistic

The idea that life-long love means nonstop hot sex is probably not realistic either.  (Nor does it comport with biological imperatives and hormonal shifts in long-term relationships, especially  relationships with children.)  Smith suggests, “if we could just lighten up about sex – see it as adult play perhaps – we would be better off.”

Mating in Captivity – the Polarity of Female Desire

Esther Perel (Mating In Captivity) brilliantly explains the polarities animating human sexual desire, especially for women.  “Desire is fueled by the unknown, and for that reason, it’s inherently anxiety-producing.  Eroticism resides in the ambiguous space between anxiety and fascination.  Without an element of uncertainty, there is no longing, no anticipation, no fission.”

Fundamental Needs Seeking Reconciliation

Two fundamental human needs seek reconciliation.  On the one hand, we need security, predictability, safety, and dependability.  We require reliability and permanence; all of these are anchoring, grounding experiences in our lives.  This anchoring is especially necessary for women as predicted by evolutionary science and a woman’s mating strategy designed to protect children.

But we have an equally strong need for adventure, novelty, mystery, and risk.  We are stimulated by a little “danger,” the unknown, the unexpected.  Surprise turns us on.  Taking a “journey” together (actual travel) is often good for our sex lives.

From Passionate to Intentional Sexuality

“Erotic couples know how to manage the transition from passionate sexuality to intentional sexuality,” says Perel.  “They understand that it not only takes work but also creativity – like when you want a beautiful meal rather than just a quick bite.” Emilly Nagoski describes “context appointments” and “windows of willingness.” (See Turn Off the Brakes! Making the Most of Responsive Desire).  She often tells women:  “You don’t have to be horny first.  You don’t have to crave sex before you start having sex.  You just have to be willing to try some intimate contact with pleasure as the only goal.”

Remain Curious, My Friend

Sexual boredom can only happen when you are no longer curious, says author Jack Morin (The Erotic Mind: Unlocking the Inner Sources of Passion and Fulfillment).  So, here’s to continued curiosity about the enigma and beauty of female desire.  I will never get bored with that.

My Next Post

My next post will continue the theme of female sexual boredom and dissatisfaction by explaining the problems of 1) “sex-is-intercourse,” 2) “clitphobia,” 3) sexual “lockjaw,” 4) the orgasm gap, and 5) “male sex deficit.”  Stayed tuned for that!

 
References

Sims, K. & Meana, M.; “Why did passion wane? A qualitative study of married women’s attributions for declines in sexual desire.”  Journal of Sex Marital Therapy; 2010, 36 (4) 360-380.

Murray, S. & Milhausen, R.; “Sexual desire and relationship duration in young men and women.” Journal of Sex Marital Therapy. 2012; 38 (1) 28-40.

Appendix

The “Coolidge Effect”

The story is told that President Coolidge and the first lady were given separate tours of newly formed government farms.  Upon passing the chicken coops and noticing a rooster copulating with a hen, Mrs. Coolidge inquired about how often the rooster performed this duty.  “Dozens of times each day,” replied the guide.  Mrs. Coolidge asked the guide to “please mention this fact to the president.”  When the president passed by later and was informed of the sexual vigor of the rooster, he asked, “always with the same hen?”  “Oh no,” the guide replied, “a different one each time.”  “Please tell that to Mrs. Coolidge,” said the president.

And so the Coolidge Effect was named, referring to the tendency of males to be sexually re-aroused upon the presentation of novel females, giving them a further impulse to gain sexual access to multiple women.  The Coolidge Effect is a widespread mammalian trait that has been documented many times.  Male rats, rams, cattle, and sheep all show the effect.   Men across cultures show the Coolidge Effect.

Sex Drive Defined

Sex drive is commonly defined as the frequency of sexual thoughts, frequency of masturbation, interest in sexual activity with another person, frequency of intercourse in a specified period, desire for multiple sex partners, habits of pornography use, response to erotic images in everyday life, and frequency and nature of sexual fantasies. 

Sex is not really a drive, according to Emily Nagoski (Come As You Are, 2015), because it is not necessary for personal survival.  She calls it an “incentive motivation system.”  But calling sexual desire a motivation system and not a drive (which takes away the pejorative label of dysfunction for women) does not change the fact that men think about and have the urge to engage in sexual behavior (all components above) more than women, primarily because of greater levels of testosterone and the accompanying power of their predominant short-term mating strategy.

Out-of-Sight-Out-of-Mind Responsive Desire

Female “responsive” desire must be “woken up” by direct, in-coming stimulation.  Women have a greater capacity than men to experience out-of-sight-out-of-mind concerning their sexual desire, partly because of the differences in visual sexual triggers. 

Related to “out-of-mind,” women may not be dramatically bothered by their desire loss.  That “meta-emotion” (feeling about a feeling) might depend upon the degree of parental energy expended by the woman and the degree to which her safety and security needs are met. 

Supply and Demand Influences on Responsive Desire

Sex for most women is an abundant resource; it is not in short supply.  It is a need (within the confines of self-imposed selective preferences) that can almost always be met.  Therefore, there is no need to attend to it.  Out-of-sight, out-of-mind makes sense.  If the refrigerator is full, there is no need to fantasize or strategize about how to get food.  If there is a man “pulling up” (like a bus) every five minutes, there is no need to worry about missing or choosing not to take the last bus. 

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