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We know about Ray Blanchard discovering the ‘fraternal birth order effect’ for gay men, as well as writing about AGP.
Blanchard has hypothesised that this effect does not exist for women, either heterosexual or homosexual.
I was curious about whether this effect does in fact exist for lesbians - Blanchard seems to have blind spots when it comes to women, and we have no idea who was surveyed for his study as people lie about their sexual orientation (some ‘heterosexual’ women are in fact bisexual and some ‘lesbians’ are bisexual women using the term for the sake of convenience). So given the current state of things, I wanted to ask the most reliable sample of lesbians that we have - which is Ovarit - whether they have at least one older brother
I have an older half brother but I only met him once. I wasn't raised with him around. My influences in life have been mostly women: my sisters, my aunts, my cousins, my mother, my grandmother, my great grandmother. All of these women were feminine and straight -- except my great grandmother, who was suspected to be bi by the family (had a girlfriend that she left her husband for).
My older brother is a non entity. Yet here I am, gay as a rainbow.
The birth order effect still affects men who had biological older brothers but weren't raised with them, which is why it's theorized that there's a biological change with each male pregnancy that increases their odds of being gay. So, if there were a birth order effect for women, it could also be attached to your mother's prior pregnancies, rather than who you grew up with.
There has been some interesting research into this. I recall the book, Adam's Curse. It talks about how the Y chromosome is weakening. One theory suggests that the Y chromosome and males only exist for genetic sharing/diversification.
That sounds so interesting that I looked the book up. It was written in 2005. Do you have any recent recommendations?
Unfortunately no. I haven't looked into the subject in a long time.
Thanks for replying. I will still see if my library has a copy.