Spectrum of Sexual Orientation

Overview

This episode of Crash Course Sex Ed explores sexual orientation, its spectrum, history, biology, terminology, and social context.

Sexual Orientation Basics

• Sexual orientation refers to who you’re attracted to emotionally or sexually.
• Orientation may not match behavior or public identity for many reasons.
• Sexual orientation exists on a spectrum with many identities in-between.
• Straight/heterosexual: attraction to a different gender; “hetero” means “other.”
• Gay/lesbian/homosexual: attraction to the same gender; “homo” means “same.”
• Term “homosexual” can be seen as dated in some contexts today.

Historical and Social Context

• Diverse sexualities documented across ancient cultures, including China, Egypt, Rome.
• Alexander the Great had both male and female lovers historically noted.
• Currently illegal to be gay in 64 countries; 12 impose life imprisonment or death.
• Prejudices fueled by religion, notably post-Christianity in ancient Rome.
• Thomas Aquinas argued same-sex intercourse violated the “natural order.”
• Colonization and missionary work spread the “unnatural” narrative globally.

Medical Classification and Dr. Anonymous

• The DSM initially classified homosexuality as a mental illness in the 1950s.
• 1972: Dr. John Fryer, as “Dr. Anonymous,” spoke at the APA conference in disguise.
• Activists Kay Tobin Lahusen and Barbara Gittings organized the panel.
• His speech urged acceptance and visibility among psychiatrists.
• 1973: Homosexuality removed as a mental illness from the DSM.
• Dr. Fryer publicly revealed himself twenty years later.

Biology, Fluidity, and Change

• DNA and sexual orientation appear related, but causation is not established.
• Twin studies show a small increased likelihood of shared orientation.
• 2019 study: hundreds to thousands of genes may contribute to orientation.
• Gene expression influenced by internal factors, including hormones in womb and puberty.
• Sexual fluidity: attraction can shift over time for personal and social reasons.
• Evidence shows sexual orientation cannot be forcibly changed.

Harm and Rejection of Conversion Therapy

• Conversion therapy attempts to change orientation via various methods.
• Denounced by medical and psychotherapy associations as ineffective and harmful.
• Associated with mental health risks, including negative psychological outcomes.

LGBTQIA+ Acronym and Meanings

• Acronym evolved from LG to LGBTQIA+ as identities were acknowledged.
• “Queer” used as umbrella term or flexible identity by many today.
• “Queer” has been a slur; use cautiously, especially if not self-identified.
• Some critique the acronym as clunky or othering; others find it community-building.
• As of 2021, HRC estimated up to 20 million LGBTQ+ adults in the U.S.

LGBTQIA+ Identities Summary

Key Terms & Definitions

• Sexual orientation: Pattern of romantic or sexual attraction to genders.
• Spectrum: Range of orientations beyond simple binaries.
• Sexual fluidity: Capacity for attraction to change over time.
• Conversion therapy: Efforts to change orientation; ineffective and harmful.
• Demisexual: Sexual attraction occurs only with strong emotional closeness.

Action Items / Next Steps

• Recognize orientation diversity and respect individuals’ self-identification.
• Avoid using dated or reclaimed terms unless individuals prefer them.
• Understand that biology may contribute, but no single cause is established.
• Note next episode topic: exploring whether virginity is “a thing.”