🌈Lesbian Birth Order Effect
“Our analyses yield robust evidence of a birth order effect on both male and female homosexuality”
☆☆☆☆ Christine Ablaza et al., 2022 ☆☆☆☆
“Our analyses yield robust evidence of a birth order effect on both male and female homosexuality. Additionally, we find that individuals’ birth order affects the probability of entering a same-sex union, regardless of the sex of older siblings.
In this example, we focus on two-person sibships because they are the most common sibship type (35% of individuals)…
Among women, the lowest Predicted Probability (PP) of entering a same-sex union is for those with a younger sister (PP = .757%), followed by those with a younger brother (PP = .764%), those with an older sister (PP = .81%), and highest for women with an older brother (PP = .92%).
The evidence gathered through this study aligns squarely with perspectives emphasizing that sexual orientation is an innate trait and a reflection of individuals’ true selves, rather than the product of lifestyle choices (Bailey et al., 2016). The implications of our findings for public debate on policies aimed at improving the health, wellbeing and social standing of sexual minorities are far-reaching.”
Innate vs. Choice
“The implications… are far-reaching.” — Why?
Answer: Because some people are more supportive of marriage equality due to an understanding that sexuality is associated with genetics/DNA. From their perspective, if LG individuals don’t have a choice in who they love, then they are content with same-sex marriage.
However… if they felt that sexuality was a lifestyle decision they would be less supportive. In essence, they aren’t supportive of LG individuals’ right to be with the person they love; they’re just supportive of it because they believe that if it’s genetic then it can’t be helped.
One way to assess this is to ask people if they would be supportive of a bisexual child dating either sex, the opposite-sex, or the same-sex. Bisexuals have a choice in their lover that monosexuals don’t. As such, people who only support marriage equality for LG individuals because they believe they have no choice in who they love may reveal themselves to be less open-minded than they purport when asked about bisexuals.
If you had a Bisexual Child would you encourage them to date someone of the same-sex, opposite-sex, or either?
🌈Lesbians/Gays (n=155; 96.8%) & bisexuals (n=435; 94.9%) overwhelmingly endorsed encouraging a bisexual child to date someone of either sex, whereas 21.7% of heterosexuals (n=1339) indicated they’d encourage dating someone of the opposite-sex, χ2(4, N = 1929) = 112.69, p<.001. #LGBTQIA
Original Birth Order Data
Age of Awareness of Sexuality: Bisexual Edition
An analysis of the bisexual subjects from my (2014) study indicated that bisexual women (n = 80) in my sample became aware of their sexuality around age 14.2 & bisexual men (n = 20) age 14.05.
⏳At What Age Did You Know? (Tara Pond’s Data)
“Most bisexual women became aware at 17.4 years of age & came out to someone at 20.9 years of age” (Pond, 2020).
Bisexual Sexual Debut
“The average age that bisexual respondents had sex for the first time (16.5 years old) was similar to ages reported with heterosexual samples, including in Aotearoa/New Zealand (Cavazos-Rehg et al., 2009; Lowry et al., 2017; Psutka et al., 2012)” (Tara Pond, 2020).
Contraception & Testosterone 💊
Casto et al., 2021: “Among female university athletes, OC users had significantly lower testosterone levels than non-users due to the testosterone suppressing effects of OC use” (Kathleen Casto et al., 2021).
Most women using combined oral contraception (or OC) experience a reduction in testosterone levels (Z.Y., & MJ Eijkemans, et al., 2014).”
Lesbians are less likely to be taking any contraceptive method than straight women (Charlton et al., 2019) & they have higher testosterone than straight women (Gartrell et al., 1977; Juster et al., 2016; Loraine, 1971; see also Emma Eklund et al., 2020).”
What is Sex? — Oxford, J., & Duncan, A. R. (2021)
Lesbians and gay men think differently about what constitutes sex, such that lesbians consider genital stimulation to be more constitutive of sex than heterosexuals do (Horowitz & Spicer, 2013) and gay men consider anal intercourse to be the behavior that constitutes sex the most (Hill et al., 2010).
Across studies, people generally agree that vaginal and anal intercourse are sex (for a review, see Horowitz & Spicer 2013). Horowitz and Spicer (2013) provided evidence for a hierarchy of sex acts (from most to least constitutive of sex), which included intercourse (vaginal and anal), other genital contact (oral and manual stimulation, stimulation by a sex aid), breast/nipple contact (oral and manual stimulation), and kissing.
Cohabitation — Balsam et al., 2017
Women are socialized to place greater emphasis on intimate relationships and have higher expectations for relationship quality than men. For example, women in same-sex relationships are more likely to cohabitate (Rosenfeld, 2014), are about twice as likely as men to enter into legal unions (Rosenfeld, 2014; Solomon et al., 2004), and wait a shorter period to legalize their relationship than do men (Rothblum et al., 2008).
Infidelity predicts dissolution for heterosexual couples… surprising no one.
Interestingly, infidelity doesn’t predict dissolution for lesbian couples.
For gay men → 40% of the male–male couples had an agreement that sex outside their relationship was acceptable under some circumstances, something that was true for only 6% of heterosexual & female–female couples (Solomon et al., 2005).
Thus, non-monogamy was not a predictor of relationship dissolution for men in same-sex relationships, consistent with other research on gay men (Bricker & Horne, 2007; Parsons, Starks, Gamarel, & Grov, 2012) in which non-monogamy is not a predictor of relationship satisfaction.