Thread by @cremieuxrecueil

Most men are entirely heterosexual, and we can prove this by measuring genital arousal.

https://twitter.com/alexxdebut/status/1957871727469371612

This methodology works in the general population and it works within twin pairs.

Amazing, no?

This result directionally holds up when you use pupil dilation instead of genital arousal.

But again, what happens when you look at women?

Much more similar levels of responding. Far less distinct, far more 'bisexual-like'.

As an indication of the robustness here, this is the female result for pupil dilation.

Bisexual males are a real thing, but they're just rare.

When you compare their genital and self-reported arousal patterns, they agree, much as patterns do for male heterosexuals and male homosexuals (that is: they agree with what they call themselves).

But for women, the story is different.

Women have far more diffuse arousal responses to stimuli.

You could say this means women are more bisexual—and I would agree because it's obviously true—but it seems likely they're just more... let's say "diffuse" again.

Anyway, my points are that:

1. Bisexual males exist
2. They are the minority we know them to be
3. This should be obvious to anyone in the real world

Sources:

link.springer.com/chapter/10.100…

nature.com/articles/s4159…

pnas.org/doi/full/10.10…

discovermagazine.com/ncbi-rofl-appa…