Sexual fluidity

Often, sexual orientation and sexual identity are not distinguished, which can impact accurately assessing sexual identity and whether or not sexual orientation is able to change; sexual orientation identity can change throughout an individual's life, and may or may not align with biological sex, sexual behavior or actual sexual orientation. While the Centre for Addiction and Mental Health and American Psychiatric Association state that sexual orientation is innate, continuous or fixed throughout their lives for some people, but is fluid or changes over time for others, the American Psychological Association distinguishes between sexual orientation (an innate attraction) and sexual orientation identity (which may change at any point in a person's life). Scientists and mental health professionals generally do not believe that sexual orientation is a choice. The American Psychological Association states that "sexual orientation is not a choice that can be changed at will, and that sexual orientation is most likely the result of a complex interaction of environmental, cognitive and biological factors...is shaped at an early age...[and evidence suggests] biological, including genetic or inborn hormonal factors, play a significant role in a person's sexuality." Diamond, when reviewing research on lesbian and bisexual women's sexual identities, stated that studies find "change and fluidity in same-sex sexuality that contradict conventional models of sexual orientation as a fixed and uniformly early-developing trait." She suggested that sexual orientation is a phenomenon more connected with female non-heterosexual sexuality, stating, "whereas sexual orientation in men appears to operate as a stable erotic 'compass' reliably channeling sexual arousal and motivation toward one gender or the other, sexual orientation in women does not appear to function in this fashion... As a result of these phenomena, women's same-sex sexuality expresses itself differently from men's same-sex sexuality at every stage of the life course." ==Biology and stability==

Conversion therapy (attempts to change sexual orientation) is rarely successful. In Maccio's (2011) review of sexual reorientation therapy attempts, she lists two studies that claim to have successfully converted gay men and lesbians to heterosexuals and four that demonstrate the contrary. She sought to settle the debate using a sample that was not recruited from religious organizations. The study consisted of 37 former conversion therapy participants (62.2% were male) from various cultural and religious backgrounds who currently or previously identified as lesbian, gay, or bisexual. The results indicated that there were no statistically significant shifts in sexual orientation from pre- to post-treatment. In follow-up sessions, the few changes in sexual orientation that did occur following therapy did not last. This study stands as support for the biological origin of sexual orientation, but the largely male sample population confounds the findings. Further support for the biological origin of sexual orientation is that gender atypical behavior in childhood (e.g., a young boy playing with dolls) appears to predict homosexuality in adulthood (see childhood gender nonconformity). A longitudinal study by Drummond et al. (2008) looked at young girls with gender dysphoria (a significant example of gender atypical behavior) and found that the majority of these girls grew up to identify as bisexual or lesbian. Many retrospective studies looking at childhood behavior are criticized for potential memory errors; so a study by Rieger, Linsenmeier, Gygax, & Bailey (2008) used home videos to investigate the relationship between childhood behaviors and adult sexual orientation. The results of this study support biological causation, but an understanding of how cultural assumptions about sexuality can affect sexual identity formation is also considered. There is strong evidence for a relationship between fraternal birth order and male sexual orientation, and there has been biological research done to investigate potential biological determinants of sexual orientation in men and women. One theory is the second to fourth finger ratio (2D:4D) theory. Some studies have discovered that heterosexual women had higher 2D:4D ratios than did lesbian women but the difference was not found between heterosexual and gay men. Similarly, a study has shown that homosexual men have a sexually dimorphic nucleus in the anterior hypothalamus that is the size of females'. Twin and family studies have also found a genetic influence. ==Changes in sexuality==

Demographics One study by Steven E. Mock and Richard P. Eibach from 2011 shows 2% of 2,560 adult participants included in National Survey of Midlife Development in the United States reported change of sexual orientation identities after a 10-year period: 0.78% of male and 1.36% of female persons that identified themselves to be heterosexuals at the beginning of the 10-year period, as well as 63.6% of lesbians, 64.7% of bisexual females, 9.52% of gay males, and 47% of bisexual males. According to the study, "this pattern was consistent with the hypothesis that heterosexuality is a more stable sexual orientation identity, perhaps because of its normative status. However, male homosexual identity, although less stable than heterosexual identity, was relatively stable compared to the other sexual minority identities". Having only adults included in the examined group, they did not find the differences in fluidity which were affected by age of the participants. However, they stated that "research on attitude stability and change suggests most change occurs in adolescence and young adulthood (Alwin & Krosnick, 1991; Krosnick & Alwin, 1989), which could explain the diminished impact of age after that point". Males versus females Research generally indicates that while the vast majority of men and women are stable and unchanging in their orientation and identity; when it comes to those who are fluid, female sexuality is more fluid than male sexuality. Female sexuality (lesbian and heterosexual) changes significantly more than males on both dimensional and categorical measures of sexual orientation. Over a six-year period, women have also been found to display more shifts in sexual orientation identity and were more likely to define their sexual orientation with non-exclusive terms. and that men and women are socialized differently. This difference in socialization can explain differences in sexual desire and stability of sexual orientation. Male sexuality is centered around physical factors, whereas female sexuality is centered around sociocultural factors, An evolutionary psychology hypothesis proposes that bisexuality enables women to reduce conflict with other women, by promoting each other's mothering contributions, thus ensuring their reproductive success. According to this view, women are capable of forming romantic bonds with both sexes and sexual fluidity may be explained as a reproductive strategy that ensures the survival of offspring. A longitudinal study concluded that stability of sexual orientation was more common than change. The study was conducted over a single year. Youth appears to be when most change in sexual orientation identity occurs for females. A 10-year study compared sexual orientation as measured at four times during the study. The most change was found between the first (taken at 18 years of age) and second (taken at 20 years of age) measurements which was the only time bracket that fell during adolescence. A yearlong study found that sexual identity was more stable for gay and lesbian youth participants when compared to bisexual participants. Bisexuality as a transitional phase Bisexuality as a transitional phase on the way to identifying as exclusively lesbian or gay has also been studied. In a large-scale, longitudinal study, participants who identified as bisexual at one point in time were especially likely to change sexual orientation identity throughout the six-year study. A third longitudinal study by Kinnish, Strassberg, and Turner (2005) supports this theory. While sex differences in sexual orientation stability were found for heterosexuals and gays/lesbians, no sex difference was found for bisexual men and women. == Society and culture ==

The exploration on sexual fluidity initiated by Lisa M. Diamond presented a cultural challenge to the LGBT community; this is because although researchers usually emphasize that changes in sexual orientation are unlikely, despite conversion therapy attempts, sexual identity can change over time. That sexual orientation is not always stable challenges the views of many within the LGBT community, who believe that sexual orientation is fixed and immutable. There is some level of cultural debate regarding the question of how (and if) fluidity exists among men, including questions regarding fluctuations in attractions and arousal in male bisexuals. Sexual fluidity may overlap with the label abrosexual, which has been used to refer to regular changes in one's sexuality. Bi-cycle is a slang term used amongst bisexuals to refer to sexual fluidity between how much attraction they feel towards certain genders. ==See also==