Encyclopedia of Evolutionary Psychological Science

Living Edition
| Editors: Todd K. Shackelford, Viviana A. Weekes-Shackelford

Hormonal Component of Homosexuality

  • Alicia Garcia-FalguerasEmail author
Living reference work entry
DOI: https://doi.org/10.1007/978-3-319-16999-6_3371-1



Sexual orientation is defined as “an enduring pattern of emotional, romantic, and/or sexual attractions to men, women, or both sexes” (APA 2008).


Sexual preferences are focused to be expressed during the whole process of courtship and mating. Thus, depending toward which gender those behaviors are aimed to, a person may be defined as heterosexual, homosexual, or bisexual. In this sense, sexual orientation has a motivational (desire) compound and also a behavioral component (courtship behavior). In homosexual persons both components (motivational and behavioral) are orientated toward their same sex group. These feelings are expressed during all the life span, while the behavior might be expressed or not. Psychological research (questionnaires, tests) through many years and in different historical periods has demonstrated that sexual orientation ranges along a...


Sexual Orientation Congenital Adrenal Hyperplasia Sexual Attraction Gender Dysphoria Homosexual Behavior 
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I thank Prof. Dr. D. F. Swaab for his witted teaching of the method and precise orientation in study and research. For his generous explanations about how to switch on the light of knowledge and his confidence about my capacity to see and find the forward right track. Also I thank very much to Dr. Jenneke Kruisbrink for her literature resource help.


  1. APA. (2008). Answers to your questions: For a better understanding of sexual orientation and homosexuality. Available: http://www.apa.org/topics/lgbt/orientation.aspx.
  2. Auer, M. K., Fuss, J., Höhne, N., Stalla, G. K., & Sievers, C. (2014). Transgender transitioning and change of self-reported sexual orientation. PloS One, 9, e110016.CrossRefPubMedPubMedCentralGoogle Scholar
  3. Earp, B. D., Wudarczyk, O. A., Sandberg, A., & Savulescu, J. (2013). If I could just stop loving you: Anti-love biotechnology and the ethics of a chemical breakup. American Journal of Bioethics, 13, 3–17.CrossRefPubMedPubMedCentralGoogle Scholar
  4. Engel, K. C., Männer, L., Ayasse, M., & Steiger, S. (2015). Acceptance threshold theory can explain occurrence of homosexual behaviour. Biology Letters, 11, 20140603.CrossRefPubMedPubMedCentralGoogle Scholar
  5. Garcia-Falgueras, A., & Swaab, D. F. (2010). Sexual hormones and the brain: An essential alliance for sexual identity and sexual orientation. Endocrine Development, 17, 22–35.PubMedGoogle Scholar
  6. Gooren, L. (2011) Is there a hormonal basis for human homosexuality? Asian J Androl, 13, 793–4.CrossRefPubMedPubMedCentralGoogle Scholar
  7. Hahn, A., Kranz, G. S., Sladky, R., Kaufmann, U., Ganger, S., Hummer, A., Seiger, R., Spies, M., Vanicek, T., Winkler, D., Kasper, S., Windischberger, C., Swaab, D. F., & Lanzenberger, R. (2016). Testosterone affects language areas of the adult human brain. Human Brain Mapping, 15, 1738.CrossRefGoogle Scholar
  8. Kinsey AC, Pomeroy WR, Martin CE (1948) Sexual behavior in the human male. Philadelphia: W.B. Saunders Co.Google Scholar
  9. LeVay S. (1991) A difference in hypothalamic structure between heterosexual and homosexual men. Science, 253(5023), 1034–7.CrossRefPubMedGoogle Scholar
  10. Puts, D. A., Jordan, C. L., & Breedlove, S. M. (2006). O brother, where art thou? The fraternal birth-order effect on male sexual orientation. Proceedings of the National Academy of Sciences of the United States of America, 103, 10531–10532.CrossRefPubMedPubMedCentralGoogle Scholar
  11. Savic, I., Garcia-Falgueras, A., & Swaab, D. F. (2010). Sexual differentiation of the human brain in relation to gender identity and sexual orientation. Progress in Brain Research, 186, 41–62.CrossRefPubMedGoogle Scholar
  12. Swaab, D. F., & Hofman, M. A. (1990). An enlarged suprachiasmatic nucleus in homosexual men. Brain Research, 537(1–2), 141–148.CrossRefPubMedGoogle Scholar
  13. Thienel, M., Heinrichs, M., Fischer, S., Ott, V., Born, J., & Hallschmid, M. (2014). Oxytocin’s impact on social face processing is stronger in homosexual than heterosexual men. Psychoneuroendocrinology, 39, 194–203.CrossRefPubMedGoogle Scholar
  14. Wingfield JC, Jacobs J, Hillgarth N. (1997) Ecological constraints and the evolution of hormone-behavior interrelationships. Ann N Y Acad Sci, 807, 22–41.CrossRefPubMedGoogle Scholar

Copyright information

© Springer International Publishing AG 2016

Authors and Affiliations

  1. 1.Netherlands Institute for NeuroscienceAmsterdamThe Netherlands

Section editors and affiliations

  • Christopher Watkins
    • 1
  1. 1.Abertay UniversityDundeeScotland