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Sexual Orientation
Generally describes the people/groups of people an individual would describe themselves as feeling attracted to
Shapes how people experience and express sexuality
Sexuality
The capacity for sexual responses and experiences
Based on how and what one enjoys/desires intimately/sexually
William Masters
Began research on the physiology of sexual response in 1954
Interviewed prostitutes to gather info on arousal, tension, response, orgasm, etc
Hired Virginia Johnson as an RA and they developed tools to measure arousal in a lab setting
Human Sexual Response
Excitement
Beginning of arousal
Late Excitement (Plateau)
Sexual tensions intensify
Orgasm
Peak of arousal
Release of tensions
Resolution
Return to unaroused state
Excitement
First stage of Human Sexual Response Cycle
Beginning of erotic arousal
Erection, vaginal lubrication
Vasocongestion: blood flow to genitals
Myotonia: muscle contraction
Late Excitement (Plateau)
Second stage of Human Sexual Response Cycle
Sexual tensions intensify and reach an extreme level
Duration is largely dependent on stimulation and individual drive to keep going
Orgasm
Third stage of Human Sexual Response Cycle
Intense sensation that occurs at the peak of arousal
Release of sexual tensions
Resolution
Fourth stage of Human Sexual Response Cycle
Body returns physiologically to an unaroused state
Reversal of the processes that build up during the excitement stage
Criticisms of Human Sexual Response Cycle
Focuses solely on physiological processes
Ignores cognition and affect
Triphasic Model
Adds sexual desire as an additional phase on the human sexual response cycle model
Kaplan, 1979
Dual Control Model
Focuses on both:
Excitement phase (“When I think of a very attractive person, I easily become aroused’)
Inhibition phase (“I need my clitoris to be stimulated to continue feeling aroused)”
Bancroft et al, 2009
Sexual Double Standard
The evaluation of male behavior and female behavior according to different standards
Tolerance of male promiscuity
Disapproval or female promiscuity
Refers to conservative attitudes toward female sexuality
May be heightened for certain women of color
Women’s Sexuality is Racialized
White women: Often portrayed as submissive and dependent on men
Black women: Portrayed as independent and domination; stereotyped as very hypersexualized
Asian American Women: Stereotypes as “exotic sex toys”
Indigenous Women: Women and their sexuality are largely invisible
Casual Sex
Judged by a double standard: more positive evaluation of men relative to women who engage in it
sexual double standard
Casual Sex Experiment
Approached strangers on campus: “Would you go to bed with me tonight?”
75% of men said yes
0% of women said yes
Go-to evidence that men want casual sex far more than women
Attractiveness
Sex differences in preferences for ____ and status disappear when considering actual (rather than ideal) partners
Sexual Partners
Do women desire and have fewer ____ than men?
No differences in desire looking at median values
Most people desire one sexual partner
Social desirability may lead men to exaggerate number of actual partners
Think; Self-focused
Do men ___ about sex more than women do?
It may be that men have a greater number of personal-need-based thoughts than did women, in general
Men are socialized to be more agentic and _____
Orgasm Difference
Do women orgasm less frequently than men?
Yes, but the difference is smaller when examined within the context of committed relationships
Casual Sex Difference
Do men like casual sex more than women?
Yes, but differences disappear when you account for whether women perceive a casual sex partner to have high sexual capabilities and when they have less fear of stigma
Choosier
Are women ___ than men?
Yes, but maybe only because men are socialized to approach women more than vice versa
Gender Differences in Sexuality
Men reported more sexual experience than women on 13 of 14 of the sexual behaviors examined
Men reported more permissive sexual attitudes
Men reported engaging in more casual sex, masturbation, pornography use and more favorable attitudes towards casual sex
Women were more likely to report same-sex sexual experiences and more favorable attitudes towards sex accompanied by emotional commitment
Conclusion: Men and women are more similar than different regarding sexual behavior and attitudes
Bogus Pipeline Study
College students reported their number of sex partners on one of three conditions
Bogus pipeline: hooked to a fake lie detector
Anonymous: sealed in a lock box
Exposure threat: experimenter sees answers
NO significant gender difference in the number of sexual partners reported
Sexual Desire in Context
Desire is shaped by experience and depends on context
Pleasurable, fulfilling sex → more desire
Unsatisfying or painful sex → less
Feminist critique: with adequate clitoral stimulation, gender differences in desire would likely be trivial
Orgasm Views
Freud: distinguished between clitoral and vaginal orgasms (only the “mature” orgasm was vaginal)
Masters and Johnson: Established that. physiologically, there is only one kind of orgasm
with Alfred Kinsley: found women can have multiple orgasms
no refractory period
The Grafenberg Spot (G spot)
A small gland on the front wall of the vagina, emptying into the urethra
The popularized term for the Skene’s gland or paraurethral gland (female’s prostate)
Debated: some women may have a G-spot and others not
May be responsible for female ejaculation
Squirting is similar to but distinct from ejaculation
Orgasm Gap
The tendency for women to have lower rates of orgasm than men during heterosexual sexual encounters
75% of men had an orgasm during their most recent sexual encounter
45% of women
Closing the Orgasm Gap
Orgasm is strong predictor of sexual satisfaction and relationship satisfaction for heterosexual, lesbian, and bisexual women and heterosexual men
May be related to both biology and socialization
Lesbian women tend to have higher rates of orgasm
Closing the gap: penis-in-vagina intercourse alone is rarely sufficient
Oral or manual stimulation tends to be much more effective
Masturbation and Sexual Development
For many people, masturbation is their earliest sexual experience
31% of women who had not masturbated to orgasm before marriage had no orgasm by the end of their first year of marriage vs. 13-16% of women who had
Boys mostly learn about masturbation by hearing about it; girls mostly by accidental discovery
more taboo for girls
Can be a source of feeling of sexual empowerment for adult women
Medicalization of Sexual Changes
Sexual desire increases from puberty through midlife and then gradually declines from age 55 and on
Medicalization
Societies tend to view normal, natural conditions and transitions as medical illnesses
Can produce bias and stigma related to the sexuality of older adults
Medicalization
Societies tend to view normal, natural conditions and transitions as medical illnesses
ex: menopause and erectile dysfunction
Sexuality and Aging
Among women ages 75-80
10% had frequent sexual thoughts
18% had masturbated in the past year
20% had engaged in sexual intercourse
Still sexually active
Why Focus on Orgasm
May be easier to measure than subjective feelings or arousal or pleasure
Early feminist research on orgasms sought to debunk oppressive myths about sexuality, such as the notion that women do not have strong sexual needs or desires
Masters and Johnson (1966) endeavored to show that both women and mens responded similarly, physiologically, to sexual stimulation
Medical Model of Sexuality
Feminist research and critiques challenged dominant discourses about women’s sexuality, but also inadvertently defined women’s sexual liberation in terms of the ability to have orgasms
The ability to reach orgasm is viewed as a sign of health
Lack of orgasm is viewed as dysfunction
Medical/pharmaceutical establishment has redefined women’s orgasmic and other sexual difficulties as disease
Sexual Well-Being
Distinct form the absence of dysfunction or the mere experience of an orgasm: being able to explore and express one’s sexuality freely and safely, being respected by one’s partners, feeling comfortable communicating about one’s sexuality, and affirming one’s bodily capacity for sexual pleasure
Sexual Disorder
Refers to various disturbance or impairments of sexual functions, such as inability to have an orgasm or premature ejaculation, that cause a person to be distressed
Hypoactive Sexual Desire
Lack of interest in sex or sharply reduced interest, or a lack of responsive desire
Discrepancy of Sexual Desire
If one partner wants sex less frequently than the other, there is a discrepancy and conflict
often the problem with hypoactive sexual desire, not the individual’s absolute level of desire
Asexuality
Distinct from a sexual desire disorder
experience little or no sexual attraction to other people
OR
does not feel an interest in or desire for sexual activities with others
most still experience romantic attraction and connection/intimacy
Female Sexual Arousal Disorder
Refers to a lack of response to sexual stimulation, including a lack of lubrication
involves subjective, psychological component and a physiological element
can struggle to feel aroused despite stimulation or have difficulties with vaginal lubrication
Anorgasmia
The ability to have an orgasm
Lifelong: woman has never had an orgasm
Situational: woman has orgasm in some situations, but not in others
Dyspareunia
Painful intercourse
can trigger other problems with sexual functioning
too often dismissed in women
Vaginismus
Involves a tightening or spasm of the outer third of the vagina. possibly to such an extent that the opening of the vagina is closed and intercourse becomes impossible
Tiefer’s Categories
Sexual problems due to sociocultural, political, or economic factors
inadequate sexual education; absence of info about impact o gender roles
Sexual problems relating to partner and relationship
discrepancies in desire or preferred behaviors; dislike or fear of partner, poor communication about sex
Sexual problems due to psychological factors
sex aversion, pleasure inhibition due to past abuse; problems associated with attachment issues; depression, anxiety
Sexual problems due to medical factors
pain or lack of response; specific conditions or side effects of medications
Heteronormativity Theory (of low sexual desire)
Low sexual desire in women from a more structural explanation
Heteronormativity contributes to low sexual desire in women partnered with men
Inequitable house labor
Emotional, cognitive, physical labor leaves women too tired for sex
Sexual double standard makes women hesitant to initiate sex
Evelyn Hooker (1957)
Research showed no differences in psychological adjustment between heterosexual and gay male participants
Stonewall Uprising (1969)
Police raid on the Stonewall Inn, NYC
six days of resistance
Watershed for the gay liberation movement
Lead to the removal of homosexuality from the DSM-II in 1973
Law and Sexuality
60+ countries where same-gender sexual activity is illegal
12 of those countries: punishable by death
United States
until cases in 2015 and 2020: most states didn’t recognize same-gender partners and it was legal to fire someone for being queer or transgender
Path to Marriage Equality
1996: Defense of Marriage Act (DOMA): marriage = one man and one woman
2000: Vermont: civil unions
2000s: 6 states legalize; 29 states pass constitutional bans
2015: Obergefell v. Hodges: equal protection clause → marriage equality
Why Marriage Equality Matters
Legally recognized couples: better mental health
State marriage equality → fewer youth suicide attempts
Today
about 1.3M US households led by same-gender couples, 58% married
Legal in about 39 countries (2026)
Homophobia
A strong, irrational fear of sexual minority persons
Antigay Prejudice
Preferred by some scholars: antagonistic or disparaging attitude and prejudices behaviors are more common than “phobia”
Heterosexism
Discrimination or bias against people based on their sexual orientation, and nonheterosexuality in particular
Heteronormativity
The pervasive cultural belief that heterosexuality is the norm
Attitudes on Sexuality
1973: 74% say same-gender sexuality “Always wrong”
2022: 29% say “Always wrong”, 6 times as many say “not wrong at all”
Since then:
Support for same sex marriage: 71% (2023) → 65% (May 2026)
Queer Theory
Binaries, both gender and sexual, should be challenged
Sexual and gender orientation are not essential
Fluid and dynamic over time and in different situations
Challenges concepts like heteronormativity and other ideas about what is “normal”
Binary categories themselves
Exert power over people and their interactions
Create privilege as well as marginalization
Performativity
The idea that gender and sexual orientation are constructed through a constant set of performances by people
Gender: women perform through clothing, jewelry, etc
Heterosexuality: man-woman couple holding hands in public
Sexuality Across Time
1860s: became more common to classify people into categories based on the sex of the people they were attracted to
Early 1900s: homosexuality and heterosexuality were becoming widely used terms
Result: labeling of sexual orientation contributed to categorization of some sexual behavior as natural/normal and others as deviant
Language
“Homosexual”: considered offensive by many now, due to its association with an era in which people pathologized sexual minorities
Preferred terms
queer, LGB, same-sex sexuality, sexual minority individuals
Dimensions of Sexual Orientation
Attraction: whom one is sexually attracted to
own gender, other, or multiple
Identity: how one thinks of oneself
"I’m straight, bi, queer
Behavior: whom one engages in sexual behavior with
own gender, other, or multiple
May not align: some men have a heterosexual identity yet occasionally have sex with men
Identity
Label that a person used to describe their sexual orientation and the emotional reactions that they have to this label
Some choose to reject using a label
Sexual Orientation Stats
Alfred Kinsey estimated that 10% of the US population was queer in the 1940s
5.5% vs 2% women vs men reporting a bisexual identity
9% of US adults identity as LGBTQ; bisexual is the largest group (2025)
Demisexuality
Attraction occurs only when a person forms a strong emotional connection with another person
Pansexuality
Erotically and emotionally attracted to people regardless of their gender
Queer
Orientation in which individual does not identify with any specific sexual orientation; an umbrella term used for those who are not heterosexual and/or gender-binary
Skoliosexuality
Attraction toward non-binary-identified individuals
Sexual Desire
A wish or urge to engage in sexual activities
Love
Strong feelings of affection and attachment
The Kinsey Scale
Developed by biologist and sexologist Alfred Kinsley in the 1940s
First widely used scale for measuring sexual orientation
Designed to illustrate how people fall on a continuous scale of sexual orientation ranging from same sex/gender attraction to other sex/gender attraction
Criticisms of the Kinsey Scale
Assumes sex/gender binary
Assumes that all people experience both sexual and romantic attraction (and that the two always align)
Sexual Fluidity
Situation-dependent flexibility in women’s sexual responsiveness
Women more likely that men to show fluidity
Queer Theory and Psychology
Have an “uneasy relationship”
Psychology categorizes
Queer theory questions who counts (how scientists define and construct categories)
Many people do not fit neatly into a sexual orientation category
Lesbians vs Gay Men
Lesbians place more emphasis on the emotional intimacy of their relationship than gay men do
Men with a male partner have sex considerably more frequently than women with a female partner do
Women tend to identify as bisexual and display more sexual fluidity than men do
Worldwide, people generally hold more negative attitudes toward gay men
Lesbians are somewhat less likely than gay men to engage in casual sex
Early Stage Theories (sexuality)
Cass (1979): A linear process of stages
Confusion and question
Acceptance and pride
Synthesis: identity endpoint
Criticisms:
Andocentric
Linear
Context-blind
Cass Model Criticisms
Andocentric: developed with gay men, then overgeneralized to lesbian women
Linear: assume step-by-step order and a developmental endpoint
Context-blind: not everyone has the freedom and safety to explore their identity
Phase Models (sexuality)

Milestone Models (sexuality)
Identify the timing, sequence, and tone of different milestones that many sexual minority individuals experience
ex: awareness of same-sex attraction → first same-sex contact → first disclosure of identity to others
Coming out: development process, not a single event
Coming Out
A developmental process with multiple milestones, not a single event
the sequence varies by person and context
Girls vs Boys
Many milestones happen for sexual minority girls at an older age in comparison to boys
Girls:
more likely to experience first same-sex attraction as emotional and in context of dating
also more lily to label and disclose identity before first same-sex sexual contact
Boys:
more likely to experience their first same-sex attraction as sexual and have first same-sex contact with a friend or stranger
also more likely to label and disclose identity after first same-sex sexual contact
Coming Out to Family
73% of LGB adults had talked with a parent (usually mother first)
Not out to parents, or unsupportive reaction → more depression
Positive reactions from parents or siblings → higher self-esteem, fewer depressive symptoms
More negative reactions to trans and nonbinary youth
Sexual minority girls more likely than boys to get a positive reaction
When rejected, many find support from friends or a chosen family
Gender-based Violence
Forms of violence in which women are the predominant victims and men are the predominant perpetrators; transgender people are also overrepresented among victims
Rape
Intimate partner violence
Sexual harassment
Child sexual abuse
Human trafficking
Female genital mutilation
Child marriage
Underreported
Underreported
Instances of gender-based violence are often ____: victims are often blamed, and reporting can feel costlier than staying silent
Objectification
One potential consequence of ____ is sexual violence
Objectification → Dehumanization → Sexual violence
Rape Defintion (FBI)
“Penetration, no matter how slight, of the vagina or anus with any body part or object, or oral penetration by a sex organ of another person, without the consent of the victim.”
Includes incapacity (drugs, alcohol, age)
Any gender
No physical force required
Sexual Assault Definition
Any nonconsensual sexual act, including fondling and attempted rape
Rape is a form of sexual assault, but not all sexual assault is rape
Rape is Hard to Measure
Underreported
only about 1 in 5 rapes reported
acquaintance even less likely
Unacknowledged
about 60% of victims don’t label nonconsensual sex as “rape”
Question wording
behaviorally specific questions capture more cases than “have you been sexually assaulted”
Rape Prevalence
120,437 rapes reported to police (FBI, 2023)
481,020 rapes or sexual assaults (DOJ, 2022)
2.9 million women raped in the past year, CDC survey with careful questions (2022)
3
1 in __ women globally will experience physical and/or sexual violence by a partner or non-partner
Rape is Gendered
26.8% women’s lifetime chance of rape or attempted rape
3.8% for men
94% of those who perpetrate rape are men
Racialized
Gender-based violence is ____
Highest for American Indian or Alaska Native and Multiracial
Girl Victims
Between 1/3 and 2/3 of sexual assault victims around the world are 15 years old or younger
Women With Disabilities
Women with severe physical impairments and cognitive and emotional disabilities are at high risk for sexual exploitation and assault
Perceived by perpetrators to be especially vulnerable
college women with disabilities 2x as likely to be sexually assaulted
Women in the Military
Sexual assault rates of both women and men tend to be relatively high
More likely to be assaulted than a fellow soldier is to be killed by enemy fire
Cultural spillover theory:
Military service values characteristics associated with traditional masculinity
Lack of accountability
Cultural Spillover Theory
States that widespread cultural support for violence leads to increased acceptability of violence in aspects of life
may explain high rates of sexual assault in the military
Queer and Trans People
Face disproportionate risk of sexual assault/rape
53% of straight women
60% of lesbian women
79% of bisexual women
Raped, sexually assaulted, or coerced into sex
Transgender people 2x at risk of intimate partner violence relative to cisgender people
LGBTQ People
Face higher rates of poverty, stigma, and marginalization, placing them at greater risk for sexual assault
also face higher rates of hate-motivated violence, which can often take the form of sexual assault
College Students
About 1 in 4 undergrad women report sexual assault since starting college
up from 1 in 5 in 2007
Role of social setting
men control parties
heavy substance use
Gender minority students are particularly vulnerable to sexual assault
PTSD
A disorder that develops in some people after experiencing a terrifying event, such as rape or sexual assault
Aftermath of SA
No “correct” or “authentic” way to respond to rape
PTSD
Intrusion: flashbacks
Avoidance of reminders
Reactivity: easily startles
Mood: negative changes
Long Term Effects Variables
Make an individual especially prone to long-term negative effects
Prior history of abuse
Assault severity
Close ties with perpetrator
Negative coping strategies
Negative reactions from other people
More self-blame