🌈Lesbian Birth Order Effect

☆☆☆☆ Christine Ablaza et al., 2022 ☆☆☆☆

Ablaza, C., Kabátek, J., & Perales, F. (2021). Are sibship characteristics predictive of same sex marriage? An examination of fraternal birth order and female fecundity effects in population-level administrative data from the Netherlands. The Journal of Sex Research, 1–13.

Innate vs. Choice

“The implications… are far-reaching.” — Why?

Bisexual Child

Original Birth Order Data

Age of Awareness of Sexuality: Bisexual Edition

My Data

⏳At What Age Did You Know? (Tara Pond’s Data)

Bisexual Sexual Debut


Contraception & Testosterone 💊

What is Sex? — Oxford, J., & Duncan, A. R. (2021)

Cohabitation — Balsam et al., 2017

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).



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Dr. Jarryd Willis PhD

Dr. Jarryd Willis PhD

I'm passionate about making a tangible difference in the lives of others, & that's something I have the opportunity to do a professor & researcher.