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Index/Topics/Longitudinal Studies on Sexual Orientation

Longitudinal Studies on Sexual Orientation

Large, longitudinal studies on the stability and fluidity of sexual orientation

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Jan 28, 2026
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Does 2D4D link to ASR amongst gay men?

The hypothesis that the second-to-fourth digit ratio ()—a putative marker of exposure—links (ASR) specifically among gay men is biologically plausible but unsupported by clear empirical evidence: stud...

Jan 15, 2026
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What are the main neurobiological studies investigating the origins of gender identity and what limitations do researchers identify?

Neurobiological research into the origins of gender identity clusters into brain-structure/function imaging, prenatal hormone and clinical-condition studies, genetic and family analyses, and critical ...