In today’s day in age, different sexualities and gender identities are quickly becoming more accepted in mainstream society. Despite this change, there are many people who believe that having a different sexual orientation or gender identity is a choice that is frowned upon. In order to refute this belief, research and biology of the brain is necessary. Researching the brain on the basis of sexuality is a fairly new topic of discussion because it is somewhat difficult and confusing. This paper will explore the different identities of gender, sex and sexual orientation and the main biological reasons behind these. There is also some validity of different sexual orientations and identities through the evidence of sexual disorders like Klinefelter’s and Turner’s Syndrome and gender dysphoria.
In order to discuss the biology of gender identity and sexual orientation, it is necessary to first examine the differences between multiple definitions that are often mistakenly interchanged: sex, gender, sexual orientation, and gender identity. Sexual orientation is defined by LeVay (2011) as “the trait that predisposes us to experience sexual attraction to people of the same sex as ourselves, to persons of the other sex, or to both sexes” (p. 1). The typical categories of sexual orientation are homosexual, heterosexual and bisexual. Vrangalova and Savin-Williams (2012) found that most people identify as heterosexual, but there are also groups of people that identify as mostly heterosexual and mostly gay within the three traditional categories (p. 89). This is to say that there are not three concrete groups, but sexual orientation is a continuum and one can even fluctuate on it over time. LeVay (2011) also defines gender as “the ...
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http://www.mayoclinic.com/health/klinefelter-syndrome/DS01057.
Swaab, D. F. & Garcia-Falgueras, A. (2009). Sexual differentiation of the human brain in relation to gender identity and sexual orientation. Functional Neurology, 24(1), 17-28.
Turner Syndrome Society. (2011). Learn about TS: Fact Sheet. Turner Syndrome Society of the United States. Retrieved October 9, 2015 from http://turnersyndrome.org/learn-about-ts/fact-sheet
Vrangalova, Z., & Savin-Williams, R. C. (2012). Mostly heterosexual and mostly gay/lesbian: Evidence for new sexual orientation identities. Archives of Sexual Behavior, 41, 85-101. doi: 10.1007/s10505- 012-9921-y.
Zhang, S., Liu, Y., & Rao, Y. (2013). Serotonin signaling in the brain of adult female mice is required for sexual preference. Proceedings of the National Academy of Sciences, 110(24), 9968-9973.
Swaab, Df. "Sexual Differentiation Of The Human Brain: Relevance For Gender Identity, Transsexualism And Sexual Orientation." Gynecological Endocrinology 19.6 (2004): 301-312. Informa Healthcare . Web. 7 Apr. 2014.
Homosexuality is a product of biology because according to research, the hormones of the females are stronger. Dr. Hamer states that sexual orientation, male homosexuality is genetically influenced. This is passed down through their mothers to the hormone of their offspring. Sexual identity is wired into the genes, which discounts the concept that homosexuality and transgender sexuality are a choice. Since sexual differentiation occurs within the womb, as a result of hormonal influences, it has been hypothesized that homosexuality may result from differential hormone balance in the wombs of those who eventually exhibit a homosexual orientation. According to a study, the question is whether homosexual practice changes the brain or whether the brain results in homosexual practice. According to Dr. Hamer, male homosexuality might be linked to a set of five DNA sequences located on the Xq28 region of the X chromosome. Therefore, if homosexual orientAtion were completely genetic, one would expect that it would not change over the course of one's life.
...ignificant evidence for my research argument indicates that the nature of gender/sex consists of a wide consensus. The latter is significant to original sex differences in brain structure and the organized role through sex differential prenatal hormone exposures through the term used in the article as (the ‘hardwiring’ paradigm). The article is limited to scientific shortcoming that presents neuroscientific research on sex and gender for it lacks an analysis that goes beyond the observed results. The article is based on neuroscience studies and how it approached gender, yet the article suggests that gender should be examined through social, culture studies, ethnicity and race. This article will not form the foundation of my research but will be used a secondary material. The neuroscience evidences will be used to support my argument and will be used as an example.
Recently, a plethora of research has been done on determining brain differences between homosexuals and heterosexuals. Simon LeVay's work on the anterior hypothalamus is the most widely discussed and debated research in the area of sexual orientation and neuroscience. This paper will examine Simon LeVay's research which declares that there is a physiological difference between the brains of heterosexual and homosexual men (5). Furthermore, it will discuss the shortcomings of his research and the n...
A recent study done at the Medical University of Vienna shows that there is neurological basis in gender-identity and could help to explain why some people’s gender identities don’t match their biological sex. The study, led by Georg S. Kranz, utilized diffusion-based magnetic resonance tomography
Oestrogen receptors in the brain are believed to cause gender-appropriate behaviour. Oestrogen, a hormone found in the female genital tissue, acts as a ligand and, by activating the oestrogen receptors found on the surfaces of brain cells, causes notable changes in behaviour. Professors at Yale University have studied the effects of oestrogen and found the hormone increases neural connectivity in the brain resulting in a more accurate memory. Turnham et al (2002) supports this as upon investigation...
There is no doubt that men and women are influenced by biological factors. The question is are gender roles based on nature, nurture or both? When discussing human sexuality, drives and desires hormones play a substantial role in our behaviors. The physiological differences externally in males and females are obvious. For example, when aroused, males become erect, whereas females become lubricated instead of a clitoral erection. In the article, “Biological Aspects of Sexual Orientation and Identity” Milton Diamond Ph.D. claims “These differences obviously pertain to copulation, but many other mechanisms exist that are less related to coitus but very much related to sexual expression and childbearing. Muscle mass, body and skeletal articulation, enzyme and endocrine production, and other physiological features and reflexes are additional distinctions. The endocrine system of males is relatively tonic in operation, while the female system is basically cyclic during the reproductive years.” Some of these biological factors are thought to shape gender differences due to hormones and brain function. According to “Biological Theories of Gender” Saul McLeod claims that, “The biological approach suggests that there is no distinction between sex and gender, thus biological sex creates gendered behavior.” This theory
4) Money, J. , Schwartz, M. and Lewis, V.G. Adult Erotusexual status and Fetal Hormonal Masculinization and Demasculinization:46, XX. Psychoneuroendocrinology, 1984, 9, 903-908.
Despite the large collection of literature of sexuality that has been accumulating, human asexuality has been largely ignored. Asexuality is controversially considered to be a sexual orientation and people who identify as asexual are people who typically do not experience sexual attraction (Asexuality Visibility and Education Network, 2013). Though research on sex and sexual orientations has been done for centuries, the first real suggestion that there might be people who fall outside of the heterosexual – homosexual orientation spectrum came from Kinsey and colleagues in 1948. These individuals were put into a separate category and were identified as having no erotic response to hetero- or homosexual stimuli, but otherwise they were largely ignored by the researchers (Kinsey, 1953). Later, researchers linked asexuality with negative traits and pathologies, including depression and lower self-esteem (Masters, Johnson, & Kolodny, 1986; Nuius, 1983). An issue with these studies, however, is that the researchers defined asexuality in a way that most current asexuals do not agree with. For example, in a study done by Bell and Weinberg (1978), there were references made to asexual homosexuals who simply hid their homosexuality. Many asexuals, otherwise known as Aces, would struggle with this definition because homosexuality implies a type of sexual attraction: attraction to your same sex. Because Aces typically do not feel sexual attraction to anyone or anything, they should not be classified under the same label as a closeted homosexual. Another issue is that none of these studies actually focused on asexuality. Instead, they were added on the side and generally ignored.
The terms sex, gender and sexuality relate with one another, however, sociologists had to distinguish these terms because it has it’s own individual meaning. Sex is the biological identity of a person when they are first born, like being a male or female. Gender is the socially learned behaviors and expectations associated with men and women like being masculine or feminine. Gender can differentiate like being a man, woman, transgender, intersex, etcetera. Sexuality refers to desire, sexual preference, and sexual identity and behavior (1). Sexuality can differentiate as well like being homosexual, heterosexual, bisexual, etcetera. Like all social identities, gender is socially constructed. In the Social Construction of Gender, this theory shows
For many individuals, sexual and gender identity is a highly controversial topic to discuss. Those who have inconsistency with their internal or mental sense of gender compared to their physical gender is now described as a psychological disorder and is found amongst adults and adolescents. According to the Diagnostic and Statistical Manual of Mental Disorders gender dysphoria also known as gender identity disorder refers to the stresses that accompany with the variances between one’s physical gender they were assigned at birth and one’s expressed or emotional gender (5th ed.; DSM-5; American Psychiatric Association, 2013). Gender dysphoria can be contributed to many different stressors determined by ones social interactions. Throughout the years the diagnosis of gender dysphoria has evolved due to the progression of medicine and new treatment discoveries to help limit further mental issues that come with sexual identity disorders.
"Scans See 'Gay Brain Differences'" BBC News. N.p., 16 June 2008. Web. 25 Feb. 2014. .
Oliver, M. B., & Hyde, J. S. (1993). Gender difference in sexuality: A meta-analysis. Psychological Bulletin, 114, 29-51.
Homosexuality, and alternative sexualities, is a topic within biological psychology that has received widespread media attention in recent years. Many conservative politicians and individuals argue that sexuality, particularly sexual attraction, is a choice, while many gay-rights activists and supporters argue that an individual cannot choose to be gay or straight. The argument that sexual orientation, or attraction to one gender over another, is not a choice suggests that there may be an innate biological cause for human sexual orientation. Research in this area has been approached in many ways, including examination of sexual behavior in other species, brain imaging of homosexual versus heterosexual humans, twin studies, familial studies, gene linkage studies, and self-report of subjective experience. Research in this area of biological psychology has the ability to dismiss controversy and improve the social and cultural human experience of those who identify with an alternative sexuality. Many authors and researchers have explored this topic and developed hypotheses and conclusions about the cause of alternative sexuality, particularly homosexuality.
The American Psychiatric Association does not define atypical sexual interests as a disorder unless it causes personal distress, causes another person psychological or physical injury, or involves a person unwilling or unable to give legal consent. These distinctions were made to show that individuals who engage in atypical sexual behavior must not be inappropriately labeled as having a mental disorder. When we think of sexual orientation, we usually think of the continuum of gay, straight, and bisexual, but sexual orientation is a deep-seated attraction toward a certain kind of person. Erotic desire includes attention, attraction, fantasy, thoughts, urges, genital arousal, and behavior. It is further complicated by variations of dominance or submission, sadism and masochism, fetishes, and consent or no consent. These interests may be single or multiple, exclusive or nonexclusive, idiosyncratic or opportunistic, stable or fluid. Possible legal consequences, lack of opportunity, and unwillingness or inability to act all work to constrain our behavior. The sooner we learn this concerning human sexual behavior, the sooner we shall reach a sound understanding of the realities of sex. The reasons for our sexual choices are analyzed obsessively, imposing an undue emphasis on categorization rather than accepting the great diversity of same-sex attractions. But the act of categorizing all of these atypical sexual attractions does not mean that acting on them is either legal or morally acceptable nor unacceptable. Explanations for all of the elements of our sexual attractions are complex and probably unknowable. All research runs the risk of reductionism, but when research on sexuality focuses exclusively on genital sexual activity --to the exclusion of considerations of attraction, affection and affiliation--it falls short in understanding our