Scott Semenina
Psychology professor cited in the episode who explains the fraternal birth order effect and statistical details about how older brothers relate to probability of male same-sex attraction.
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Mar 10, 2026 • 12min
Sibling order may affect sexuality and identity
Scott Semenina, a psychology professor who explains the fraternal birth order effect, and Justin Torres, a novelist and essayist reflecting on queer identity. They discuss how older brothers link to male same-sex attraction, the maternal immune hypothesis, surprising large-scale findings, and cultural risks of research into sexuality.
