Female Homosexuality

Abstract

Female homosexuality, which the Medical Subject Headings thesaurus classifies under homosexuality, is the pattern of sexual or romantic attraction between women. Cognitive psychology treats it not as a condition apart but as a graded position on the same orientation instruments that locate every pattern — and as the pattern on which those instruments behave most distinctively. Female same-sex attraction anchors the high pole of the Kinsey scale, yet three findings separate it from its male counterpart: genital arousal is only weakly category-specific, the female sex drive is more erotically plastic, and attraction and identity are, on average, more fluid. This article reviews how female homosexuality is defined and measured, why its arousal signature is non-specific, what its origins evidence shows, and why its prevalence depends on the component counted.

Keywords: female homosexuality, sexual orientation, category-specific arousal, erotic plasticity, sexual fluidity

Introduction

Female homosexuality is the pattern of sexual or romantic attraction between women — lesbian attraction, in everyday terms (Bailey et al., 2016). As a subtype of homosexuality it sits at the same-sex pole of the orientation spectrum, and it is measured on the same graded instruments — the Kinsey continuum, the separable components of attraction, behavior, and identity, and the physiological recording of arousal — that locate every other orientation. What makes it a topic in its own right is not a different definition but a different behavior of those instruments: applied to women, several of the tools built to measure same-sex attraction return systematically different readings than they do for men.

That is the thread of this article. The most heavily validated measures of orientation — above all the category-specific genital response that reads a man’s attraction directly from his body — were developed and tested largely on men, and they do not transfer unchanged to women (Chivers et al., 2010). Alongside that measurement difference sit two substantive findings about women’s sexuality: the female sex drive appears more responsive to circumstance (Baumeister, 2000), and female attraction is, on average, more fluid over time (Diamond, 2008). Female homosexuality is therefore the case in which cognitive psychology’s orientation toolkit is most visibly sex-specific, and studying it is partly an exercise in understanding the limits of those tools.

The Medical Subject Headings thesaurus indexes Female Homosexuality beneath Homosexuality, itself beneath sexuality, in its classification of behavior. That placement is a retrieval convenience, not a theoretical claim about kinds of people; this article uses it only to situate female homosexuality among related orientations and otherwise treats the psychology on its own terms.

Measuring Female Homosexuality

Female homosexuality became a measurable idea the moment orientation was treated as graded rather than categorical. Kinsey, Pomeroy, and Martin (1948) placed people on a seven-point continuum from exclusively heterosexual (0) to exclusively homosexual (6); Kinsey’s later volume on women applied the same scale, and female homosexuality, in that scheme, is not a single point but the high region — ratings 5 and 6 — where predominantly and exclusively same-sex attraction fall. The scale made two things visible at once: that exclusive same-sex attraction is a minority pattern among women occupying the sparse end of the distribution, and that it is nonetheless the end of a continuum, so a rating of 5 records a predominantly same-sex pattern with incidental other-pole response rather than an all-or-nothing state.

The dissociation of components is especially consequential at the female same-sex pole. Savin-Williams and Ream (2007) showed that attraction, behavior, and identity do not pick out exactly the same people, and the gap is widest away from the heterosexual anchor: some women who report same-sex attraction have no same-sex behavior, some who behave have not adopted a lesbian identity, and the three counts of “how many women are homosexual” therefore differ. The measured prevalence of female homosexuality is not one number but three, and which is cited depends on whether attraction, behavior, or identity is the component counted.

Whether orientation needs one dimension or two bears directly on the female same-sex pole. Lippa (2020) analyzed interest, personality, and sexual traits across orientation groups and asked whether variation is better captured by one bipolar hetero–homosexual axis or by two partly independent dimensions — other-sex and same-sex attraction considered separately. Women’s attraction, in particular, maps less cleanly onto a single bipolar axis, so on the two-dimensional view female homosexuality is high same-sex attraction paired with low other-sex attraction, a positive profile measured in its own right rather than the mere mirror image of heterosexuality. Figure 1 shows where the pattern sits on the distribution the scale records.

The first demonstration makes the distribution interactive, letting the reader switch between attraction, behavior, and identity and watch how the measured size of the female homosexual minority shifts with the component counted.

Arousal and Non-Specificity

The sharpest difference between female and male homosexuality lies in arousal. Category-specificity is the degree to which genital arousal is selective for one sex, and Chivers and colleagues (2010) meta-analyzed studies recording both self-reported and genital arousal and found a large, reliable sex difference. In men, genital response is strongly category-specific and agrees closely with self-reported attraction: a gay man shows marked genital arousal to male stimuli and little to female stimuli, and his body and his report tell the same story. In women — including lesbian women — genital response is far less category-specific: substantial arousal is recorded to stimuli of both sexes regardless of stated orientation, and genital and self-reported arousal agree much less well.

For female homosexuality this is the central measurement fact. A category-specific genital reading, which serves as a usable index of orientation in men, cannot be assumed to track the orientation a woman reports. A lesbian woman will typically show genital arousal to stimuli of both sexes, so a non-specific reading is the expected signal for her, not a sign of ambiguity or of a “hidden” attraction to men. The physiological measure and the self-report, which converge for gay men, come apart for lesbian women — and the self-report is the more trustworthy index of her orientation. The non-specificity is not noise in the instrument but a finding about how female arousal is organized.

The consequence is methodological and large: a tool validated on gay men does not transfer unchanged to lesbian women, and treating a woman’s non-specific arousal as evidence about her orientation is a category error. The second demonstration models the contrast directly, letting the reader switch the respondent’s sex and watch category-specific genital arousal sharpen for men and flatten for women while self-reported same-sex attraction stays high for both.

Origins and Development

The theories offered for the origin of female homosexuality are theories of orientation in general, and they fit the female case with characteristic qualifications. Bem (1996) proposed the exotic-becomes-erotic (EBE) developmental theory as an account of both the majority and the minority pattern: childhood temperament channels a child toward sex-typical or sex-atypical activities, which determine which peers feel familiar and which feel different, and the sex experienced as exotic in childhood becomes the object of erotic attraction later. On this account female homosexuality is the outcome when a girl’s preferences are sex-atypical. But the childhood-gender-nonconformity antecedent the theory relies on predicts adult orientation less strongly in women than in men, which is one reason female orientation is treated as more developmentally open.

The biology has been studied just as intensively, and here the male–female asymmetry is explicit. Hamer and colleagues (1993) reported a linkage between DNA markers on the X chromosome — the region Xq28 — and male sexual orientation; the result was specific to men and was never established for women, so there is no female counterpart to the much-debated “gay gene” linkage. Three decades later, Ganna and colleagues (2019) analyzed the genetics of same-sex sexual behavior across hundreds of thousands of genomes in both sexes and found no single gene and no simple pattern: many variants each contribute a tiny amount, the genetic influences are spread across the genome, and they do not partition people into discrete heterosexual and homosexual kinds. The genetic architecture is polygenic and continuous, and the genetic correlates of same-sex behavior overlap only partially between women and men — so female same-sex attraction is the high end of a graded, partly sex-specific distribution of many small influences rather than the presence of a dedicated cause.

Prevalence, Stability, and Fluidity

How common female homosexuality is depends, as the measurement section showed, on what is counted. Savin-Williams and Ream (2007) found that same-sex attraction, behavior, and identity each yield a different count among young women, with attraction the most commonly reported and exclusive same-sex identity the least, so the prevalence of female homosexuality is reported as a range rather than a single figure. A woman can report same-sex attraction without same-sex behavior or a lesbian identity, and each combination is counted differently.

Stability is the second and more distinctive theme. Baumeister (2000) argued for erotic plasticity: the female sex drive is more responsive to social and situational circumstance than the male, which predicts that women’s same-sex attraction and identity are, on average, held somewhat more flexibly than men’s. Diamond (2008) followed women over ten years and documented movement in both directions — some women moved toward same-sex attraction and identity and some moved away — while finding that attractions, once established, showed real continuity. Female same-sex attraction can therefore be both genuinely stable and open to change, with no contradiction between the two: fluidity is layered on an underlying orientation, not a sign that the orientation was never real.

Mock and Eibach (2012) reported over a ten-year adult span that most people’s identity was stable, with change concentrated among those not exclusively heterosexual, and Diamond (2016) argued that sexual fluidity is a general human capacity rather than a female peculiarity — though it is more pronounced in women. For the measurement of female homosexuality this means same-sex attraction is a stable but not immutable position on a continuum that admits movement, and that the longitudinal “inconsistency” sometimes read as instability is, for women especially, the expected behavior of a fluid system. The third demonstration makes the pattern visible, letting the reader watch how the stability of an orientation component varies across the scale and differs by sex.

Worked Example

Consider two women assessed with the tools above, both of whom identify as lesbian. The first reports exclusive attraction to women, has a same-sex sexual history, and over a ten-year follow-up showed little change. The second reports predominant attraction to women, a mostly same-sex history, and over the same span showed some movement in her attractions while remaining predominantly same-sex. In the laboratory both show substantial genital arousal to stimuli of both sexes. Are both homosexual? On the components that define orientation the answer for each is plainly yes — and both the “ambiguous” lab reading and the second woman’s fluidity are exactly what the evidence predicts for women.

For the first woman, attraction, behavior, and identity place her at the exclusively same-sex anchor; her non-specific genital arousal is uninformative about her orientation rather than evidence against it, because female genital response is only weakly category-specific (Chivers et al., 2010). For the second woman, the same components place her near that anchor, and her ten-year movement is the fluidity that erotic plasticity predicts, not a failure of her orientation to be real (Baumeister, 2000; Diamond, 2008). Table 1 lays the measures side by side.

The example makes the article’s point exact. The components that define orientation place both women at the same-sex pole, so both are homosexual without qualification; the genital measure is silent for each — not because they differ in orientation but because female arousal is weakly category-specific — and the second woman’s fluidity is the expected behavior of a more plastic system, not evidence that her orientation is unreal. A model built on male data would misread the non-specific arousal as ambiguity and the fluidity as instability, when both are the predicted signatures of female orientation (Chivers et al., 2010; Diamond, 2008).

Discussion

The cognitive psychology of female homosexuality is the discipline of measuring women’s same-sex attraction on the same graded instruments as any other orientation, while recognizing that several of those instruments behave differently for women. Located on the Kinsey continuum it is the high-rating region of a single scale (Kinsey et al., 1948); described two-dimensionally it is a positive profile of high same-sex and low other-sex attraction (Lippa, 2020); and it is subject to exactly the questions about arousal, development, and stability asked of every other pattern.

Integrating the findings dissolves several apparent puzzles. Because genital arousal is only weakly category-specific in women, a non-specific lab reading is the expected and uninformative signal for a lesbian respondent, not contradictory evidence (Chivers et al., 2010); the self-report is the better index of her orientation. The developmental and genetic evidence explains female same-sex attraction by particular settings of general mechanisms, not by a dedicated cause: the childhood-temperament route fits women more loosely (Bem, 1996), the male X-chromosome linkage has no established female counterpart (Hamer et al., 1993), and the genome-wide evidence points to a polygenic, continuous, and only partly sex-shared architecture (Ganna et al., 2019). And female homosexuality can be at once a stable orientation and open to change, because the female sex drive is more erotically plastic and female attraction more fluid (Baumeister, 2000; Diamond, 2008; Mock & Eibach, 2012). The comprehensive review by Bailey and colleagues (2016) reaches the same integrative conclusion: orientation is real, early-emerging, and substantially stable across its range, and female homosexuality is the high-frequency same-sex pattern among women rather than a separate kind of thing.

None of this reduces female homosexuality to any single measure. The point of the cognitive analysis is the opposite: by specifying which component is in view, how it is assessed, and how the measure behaves for women in particular, it explains why the female same-sex pattern yields a prevalence that is a range, an arousal signature that is non-specific, and a stability that is real without being absolute.

Current Directions

The most consequential recent movement is the replacement of the categorical picture of orientation with a genuinely dimensional one, and female homosexuality is where the dimensional view has the strongest independent support. Ganna and colleagues (2019) established that the genetics of same-sex behavior are polygenic and continuous, with no variant that sorts people into discrete groups — and that the genetic correlates differ in part between the sexes, retiring any expectation of a female equivalent of the Xq28 linkage Hamer and colleagues (1993) had reported in men. Female same-sex attraction, on the current picture, is the high end of a smooth, partly sex-specific distribution of many small influences, not a population defined by a gene.

That reframing turns the measurement themes of this article into an active agenda centred on women. If erotic plasticity and fluidity are real and most pronounced in women (Baumeister, 2000; Diamond, 2016), then the stability of female same-sex attraction is a quantity to be estimated in its own right rather than borrowed from male data. If orientation is dimensional (Lippa, 2020), then women’s attraction — which maps least cleanly onto a single bipolar axis — is the strongest case for two-dimensional, component-specific measurement. And the robust non-specificity of female genital arousal (Chivers et al., 2010) leaves open a basic question the field is still pursuing: why female genital response is so diffusely non-selective, and what index should replace it as a physiological measure of orientation in women.

Common Misconceptions

“A woman aroused by both sexes in the lab cannot really be lesbian.”

In women, genital arousal is only weakly category-specific, so non-specific arousal is the expected reading for lesbian women and is uninformative about orientation; the self-report, not the genital measure, is the index that tracks a woman’s orientation (Chivers et al., 2010).

“If a woman’s attractions shift over time, her lesbian identity was never real.”

Female attraction is, on average, more fluid than male, so movement over time is layered on a genuine underlying orientation rather than disproving it; attractions once established still show real continuity (Baumeister, 2000; Diamond, 2008).

“Female homosexuality must have the same genetic cause found in men.”

The X-chromosome (Xq28) linkage was reported for male orientation and never established for women; genome-wide evidence shows same-sex behavior to be polygenic and continuous, with genetic correlates only partly shared between the sexes (Hamer et al., 1993; Ganna et al., 2019).

“There is one true number for how common female homosexuality is.”

Prevalence depends on the component counted: same-sex attraction, behavior, and lesbian identity yield different figures among women, because the components dissociate and a woman can report one without the others (Savin-Williams & Ream, 2007).

Glossary

Attraction.

The felt pull of sexual or romantic interest toward a sex; the component of orientation that defines female homosexuality and the one on which it is most commonly reported.

Category-specificity.

The degree to which genital arousal is selective for one sex; strong in men but weak in women, so a lesbian woman’s genital response is typically non-specific.

Component (of orientation).

One of the separable aspects of orientation — attraction, arousal, fantasy, behavior, or identity — that are correlated but can give different answers for one person.

Concordance (of components).

The degree to which a person’s separable orientation components agree; for women, concordance between genital arousal and the other components is notably low.

Erotic plasticity.

The responsiveness of the sex drive to social and situational circumstance; proposed to be greater in women, which predicts that female same-sex attraction and identity are held somewhat more flexibly than male.

Exotic-becomes-erotic (EBE) theory.

Bem’s developmental account in which childhood temperament determines which sex feels familiar and which exotic; it fits women more loosely, since childhood gender nonconformity predicts adult orientation less strongly in girls than in boys.

Female homosexuality.

The pattern of sexual or romantic attraction between women; in cognitive psychology, the high region of the orientation scale for women rather than a condition set apart.

Homosexuality.

Attraction to the same sex; the parent category under which MeSH classifies female homosexuality and its male counterpart.

Kinsey scale.

A seven-point continuum from exclusively heterosexual (0) to exclusively homosexual (6); female homosexuality occupies its high region, ratings 5 and 6.

Non-specific arousal.

Genital arousal that responds to stimuli of both sexes without strong selectivity; the typical female pattern, which makes genital response an uninformative index of a woman’s orientation.

Polygenic.

Influenced by many genes of individually small effect; the genome-wide architecture found for same-sex behavior, whose correlates are only partly shared between women and men.

Prevalence.

The share of a population with a given orientation; for female homosexuality it is a minority on every component, and its exact size differs by whether attraction, behavior, or identity is counted.

Sexual fluidity.

Situation- and relationship-dependent change in attraction or identity layered on an underlying orientation; a general capacity that is more pronounced in women.

Stability.

The tendency of an orientation component to persist across time; female same-sex attraction is, on longitudinal evidence, genuinely stable yet on average less fixed than exclusive heterosexual attraction.

Xq28.

A region of the X chromosome reported in 1993 to show linkage with male sexual orientation; it has no established female counterpart.

Key Researchers

J. Michael Bailey

is a professor of psychology at Northwestern University whose comprehensive review synthesized the measurement, development, and biology of sexual orientation, including the ways female same-sex orientation differs from male in arousal specificity, fluidity, and heritability.

Faculty page - Google Scholar - Wikipedia

Roy F. Baumeister

is a social psychologist, professor emeritus at Florida State University and at the University of Queensland, whose concept of erotic plasticity holds that the female sex drive is more socially flexible than the male, predicting that female same-sex attraction and identity are held somewhat more flexibly than male.

ORCID - Google Scholar - Wikipedia

Daryl J. Bem

is a professor emeritus of psychology at Cornell University whose exotic-becomes-erotic theory offers a single developmental account of orientation, one whose childhood antecedents fit women more loosely than men.

Faculty page - Wikipedia

Meredith L. Chivers

is a professor of psychology at Queen’s University whose research established that genital arousal is strongly category-specific in men but far less so in women regardless of orientation — the sex difference at the heart of how female same-sex arousal is measured.

ORCID - Faculty page - Wikipedia

Lisa M. Diamond

is a distinguished professor of psychology and gender studies at the University of Utah whose decade-long longitudinal research established sexual fluidity, documenting movement both toward and away from same-sex attraction and identity among women.

Faculty page - Wikipedia

Alfred C. Kinsey

(1894–1956) founded the Institute for Sex Research at Indiana University and devised the graded scale of orientation on which exclusive female homosexuality occupies the high pole (rating 6); his 1953 volume first documented the distribution of women’s same-sex response.

Wikipedia

Richard A. Lippa

is a professor emeritus of psychology at California State University, Fullerton whose analyses asked whether two independent dimensions, rather than a single hetero–homosexual axis, best represent variation in orientation — a question whose answer is clearest for women, whose attraction maps least cleanly onto one axis.

Faculty page

Ritch C. Savin-Williams

is a professor emeritus of developmental psychology at Cornell University whose research on the prevalence and stability of orientation components established how same-sex attraction, behavior, and identity emerge and diverge in young women.

ORCID - Faculty page - Google Scholar

Frequently Asked Questions

What is female homosexuality?

In research, female homosexuality is the pattern of sexual or romantic attraction between women. Cognitive psychology treats it as the high region of the orientation spectrum for women rather than as a condition set apart, and studies it on the same graded instruments used for every other orientation (Bailey et al., 2016).

Where does female homosexuality fall on the Kinsey scale?

At the high end: ratings 5 (predominantly same-sex, with incidental other-pole response) and 6 (exclusively same-sex), which together hold a small share of the distribution (Kinsey et al., 1948). It is a graded region of the scale, not a single point.

Why is a lesbian woman’s genital arousal often non-specific?

Because genital arousal is only weakly category-specific in women: lesbian women typically show substantial genital response to stimuli of both sexes regardless of stated orientation (Chivers et al., 2010). The non-specific reading is expected and uninformative about orientation; her self-report is the better index.

Does female attraction change over time?

Female attraction is, on average, more fluid than male — women show more movement toward and away from same-sex attraction over time — yet attractions once established still show real continuity (Baumeister, 2000; Diamond, 2008). Fluidity is layered on a genuine orientation, not a sign it was never real.

Is female homosexuality stable?

For most women, same-sex attraction is genuinely stable, and most adults’ identity does not change (Savin-Williams & Ream, 2007; Mock & Eibach, 2012). It is, on average, somewhat less fixed than exclusive heterosexual attraction and more open to change than male same-sex attraction (Baumeister, 2000).

Is there a genetic cause of female homosexuality?

No single cause. The X-chromosome (Xq28) linkage was reported for male orientation and never established for women (Hamer et al., 1993), and genome-wide evidence shows same-sex behavior to be polygenic and continuous, with genetic correlates only partly shared between the sexes (Ganna et al., 2019).

How common is female homosexuality?

There is no single figure. Same-sex attraction, behavior, and lesbian identity each give a different count among women, with attraction the most commonly reported and exclusive same-sex identity the least, because the components dissociate (Savin-Williams & Ream, 2007).

Does female homosexuality differ from male homosexuality beyond the sex involved?

Yes, in how it is measured. Genital arousal is weakly category-specific in women but sharply so in men; the female sex drive is more erotically plastic; female attraction is more fluid; and the male X-chromosome linkage has no established female counterpart (Chivers et al., 2010; Baumeister, 2000; Diamond, 2016).

References