The relationship between biology and sexual orientation is a subject of research. While scientists do not know the exact cause of sexual orientation, they theorize that it is caused by a complex interplay of genetic, hormonal, and environmental influences. Hypotheses for the impact of the post-natal social environment on sexual orientation, however, are weak, especially for males.
Three Essays on the Theory of Sexuality, sometimes titled Three Contributions to the Theory of Sex, is a 1905 work by Sigmund Freud, the founder of psychoanalysis, in which the author advances his theory of sexuality, in particular its relation to childhood.
Total enclosure fetishism is a form of sexual fetishism whereby a person becomes aroused when having entire body enclosed in a certain way. Total enclosure is often accompanied by some element of bondage.
Disability studies is an academic discipline that examines the meaning, nature, and consequences of disability. Initially, the field focused on the division between "impairment" and "disability", where impairment was an impairment of an individual's mind or body, while disability was considered a social construct. This premise gave rise to two distinct models of disability: the social and medical models of disability. In 1999 the social model was universally accepted as the model preferred by the field. However, in recent years, the division between the social and medical models has been challenged. Additionally, there has been an increased focus on interdisciplinary research. For example, recent investigations suggest using "cross-sectional markers of stratification" may help provide new insights on the non-random distribution of risk factors capable of acerbating disablement processes.
Simon LeVay is a British-American neuroscientist.
This article is a general timeline of psychology.
INAH-3 is the short form for the third interstitial nucleus of the anterior hypothalamus, and is the sexually dimorphic nucleus of humans. The INAH-3 is significantly larger in males than in females regardless of age and larger in heterosexual males than in homosexual males and heterosexual females.
Gay Science: The Ethics of Sexual Orientation Research is a 1997 book by the philosopher Timothy F. Murphy about scientific research on sexual orientation.
Irving Bieber was an American psychoanalyst, best known for his study Homosexuality: A Psychoanalytic Study of Male Homosexuals (1962), in which Bieber took the position that homosexuality is an acquired condition.
The relationship between the environment and sexual orientation is a subject of research. In the study of sexual orientation, some researchers distinguish environmental influences from hormonal influences, while other researchers include biological influences such as prenatal hormones as part of environmental influences.
Human female sexuality encompasses a broad range of behaviors and processes, including female sexual identity and sexual behavior, the physiological, psychological, social, cultural, political, and spiritual or religious aspects of sexual activity. Various aspects and dimensions of female sexuality, as a part of human sexuality, have also been addressed by principles of ethics, morality, and theology. In almost any historical era and culture, the arts, including literary and visual arts, as well as popular culture, present a substantial portion of a given society's views on human sexuality, which include both implicit (covert) and explicit (overt) aspects and manifestations of feminine sexuality and behavior.
Bisexuality is romantic attraction, sexual attraction, or sexual behavior toward both males and females, or to more than one gender. It may also be defined to include romantic or sexual attraction to people regardless of their sex or gender identity, which is also known as pansexuality.
Sigmund Freud was an influential physician and founder of psychoanalysis who treated patients with psychiatric disorders. His views on homosexuality ascribed biological and psychological factors to explain the principal causes of homosexuality. Sigmund Freud believed that humans are born with unfocused sexual libidinal drives, and therefore argued that homosexuality might be a deviation from this.
Randy Thornhill is an American entomologist and evolutionary biologist. He is a professor of biology at the University of New Mexico, and was president of the Human Behavior and Evolution Society from 2011 to 2013. He is known for his evolutionary explanation of rape as well as his work on insect mating systems and the parasite-stress theory.
Gary Schubach is a sex educator, lecturer and writer most recognized for his research on female ejaculation and the G-Spot.
Moderne Algebra is a two-volume German textbook on graduate abstract algebra by Bartel Leendert van der Waerden, originally based on lectures given by Emil Artin in 1926 and by Emmy Noether (1929) from 1924 to 1928. The English translation of 1949–1950 had the title Modern algebra, though a later, extensively revised edition in 1970 had the title Algebra.
Gay, Straight, and the Reason Why: The Science of Sexual Orientation is a book by the neuroscientist Simon LeVay and published by Oxford University Press. The book received mainly positive reviews, praising it for LeVay's wide-ranging overview of scientific research on sexual orientation. In 2012, it received the Bullough Book Award for the most distinguished book written for the professional sexological community published in a given year.
The Sexual Brain is a 1993 book about brain mechanisms involved in sexual behavior and feelings, and related topics such as sexual orientation, by the neuroscientist Simon LeVay. The book was praised as a well-written work on science. However, some reviewers pointed out factual errors, and noted that LeVay failed to prove that homosexuality has a biological basis.
Sandra Welner (1958–2001) was an American physician, inventor, and advocate for disabled women's healthcare.
Although it is not known exactly what causes one to be on the autism spectrum or what causes one's sexual orientation or gender identity partly due to the focus on children instead of adults, a few limited studies into autistic people have shown higher rates of LGBT identities and feelings among autistic people than the general population. In particular, significant overlap between autism and transgender identity have been found, including gender dysphoria.
