Androgyny, a psychological blending of gender traits, has long been embraced by strong women, soft men, members of queer communities, and others who do not easily fit into traditionally defined gender categories.
Although until recently rejected by most sexologists as a distinct sexual identity, bisexuality is gradually becoming recognized and studied as such.
Editor, photographer, and activist, Adolf Brand was the leader of a faction of the early German homosexual emancipation movement whose cultural views were expressed in Der Eigene (The Self-Owner), the first homosexual literary and artistic journal.
Henry Havelock Ellis--British psychologist and writer--was one of the first modern thinkers to challenge Victorian taboos against the frank and objective discussion of sex.
The earliest etiologies--or theories of causation--of homosexuality date from European antiquity, but the search for a universal etiology has intensified as homosexual behavior has come under the scrutiny of science.
The founder of psychoanalysis and the discoverer of the unconscious, Sigmund Freud initiated a fundamental transformation in the self-understanding of Western men and women, including especially the role of sexuality.
Genderqueer is a term for people who feel that their gender identities or gender expression do not correspond to the gender assigned to them at birth, but who do not want to transition to the "opposite" gender.
German-born Magnus Hirschfeld deserves recognition as a significant theorist of sexuality and the most prominent advocate of homosexual emancipation of his time.
The term "homosexuality," coined in 1869, with "heterosexuality" as its opposite, has led to a binary concept that oversimplifies the complexity of human sexual behavior.
Intersexuality (formerly referred to as hermaphroditism) is a congenital anomaly in which an individual's external genitalia or internal reproductive systems fall outside the norms for either male or female bodies.
Ferdinand Karsch-Haack's most significant contribution to the sexual emancipation movement in Germany consisted of demonstrating the occurrence of same-sex sexual activity throughout the animal kingdom, among the so-called primitive peoples, and in all non-Western cultures.
The most important sex researcher of the twentieth century, Alfred C. Kinsey contributed groundbreaking studies of male and female sexual behavior in America.
The Kinsey Institute at Indiana University, established by Alfred Kinsey in 1947, has pioneered in the study of American sexual behavior.
The carefully detailed case studies of nineteenth-century psychiatrist Richard von Krafft-Ebing shed light on the sexual habits of a wide spectrum of men and women.
Psychoanalysis, which began as a therapeutic procedure, ultimately became one of the most powerful methods of cultural analysis and critique of the twentieth-century.
Best known for his syndicated sex-advice column, Dan Savage is also the author of books chronicling his and his partner's experiences in adopting a child and dealing with the issue of same-sex marriage
Sexology, the study of sex or of the interactions between the sexes, first emerged as a field of intellectual inquiry in the second half of the nineteenth century; its practitioners were the first to identify homosexuality as such and to speculate about its prevalence and etiology.
Sexual orientation indicates erotic attraction, whether toward people of the same gender (homosexual), the opposite gender (heterosexual), or both (bisexual).
Nineteenth-Century German activist Karl Heinrich Ulrichs was both the first modern theorist of homosexuality and the first homosexual to "come out" publicly.
"Uranian" and "Uranianism" were early terms denoting homosexuality, in English use primarily from the 1890s through the first quarter of the 1900s.
The life of German-British medical practitioner, psychologist, and writer Charlotte Wolff spanned nearly a century of almost unimaginable changes in the status of both women and glbtq people.