Scientific study of physical characteristics of gay man

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As a presence in the world—a body hanging from a subway strap or pressed into an elevator, a figure crossing the street—I am neither markedly masculine nor notably effeminate. Nor am I typically perceived as androgynous, not in my uniform of Diesels and boots, not even when I was younger and favored dangling earrings and bright Jack Purcells. But most people immediately read me correctly as gay.

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Drawing on databases of images collected from an online dating site, a new study conducted at Stanford University concludes that faces carry information about sexual orientation. This information is not available to visual inspection by ordinary perceivers. But it can be extracted by powerful, pattern-recognizing machines "deep neural networks" or DNNs.

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A study published late last week from two Stanford researchers has caused shockwaves around the world. The duo reportedly developed a neural network that could detect the sexual orientation of a person just by studying a single facial image. The startling degree of accuracy achieved by the algorithm has been questioned by some and accused as dangerous by others.

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Facts About Homosexuality and Mental Health. Modern attitudes toward homosexuality have religious, legal, and medical underpinnings. Before the High Middle Ages, homosexual acts appear to have been tolerated or ignored by the Christian church throughout Europe. Beginning in the latter twelfth century, however, hostility toward homosexuality began to take root, and eventually spread throughout European religious and secular institutions.

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The relationship between biology and sexual orientation is a subject of research. While scientists do not know the exact cause of sexual orientationthey theorize that a combination of genetic, hormonal, and social factors determines it. Biological theories for explaining the causes of sexual orientation are favored by scientists [1] and involve a complex interplay of genetic factors, the early uterine environment and brain structure.

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In the Aug. In a large study of more thanmen and women in the United States, United Kingdom and Sweden, researchers discovered four genetic variants that occur more often in people who indicated on questionnaires that they had had same-sex sexual partners. The other two influence sex partner choice for both men and women.

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But geneticists have had only a handful of underpowered studies to address a complex, fraught, and often stigmatized area of human behavior. Now, the largest-ever study of the genetics of sexual orientation has revealed four genetic variants strongly associated with what the researchers call nonheterosexual behavior. Some geneticists are hailing the findings as a cautious but significant step in understanding the role of genes in sexuality.

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The machine intelligence tested in the research, which was published in the Journal of Personality and Social Psychology and first reported in the Economist, was based on a sample of more than 35, facial images that men and women publicly posted on a US dating website. The data also identified certain trends, including that gay men had narrower jaws, longer noses and larger foreheads than straight men, and that gay women had larger jaws and smaller foreheads compared to straight women. Human judges performed much worse than the algorithm, accurately identifying orientation only 61 per cent of the time for men and 54 per cent for women.

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Gaydar a portmanteau of gay and radar is a colloquialism referring to the intuitive ability of a person to assess others' sexual orientations as gaybisexual or heterosexual. Gaydar relies on verbal and non-verbal clues and LGBT stereotypes. These include the sensitivity to social behaviors and mannerisms; for instance, acknowledging flamboyant body language, the tone of voice used by a person when speaking, overtly rejecting traditional gender rolesa person's occupation, and grooming habits.

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Skip to contentor skip to search. As he recruited experiment subjects, Lippa scanned the passing scalps, some shaved clean, some piled in colorful tresses. So, as part of his study, he has swabbed the inside cheek of his subjects. It will be months before that DNA testing is complete.

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