[modelic3]

The post doesn't mention which is which. Holy shit. What if I got it wrong? (Please don't be alarmed. I'm just being overly dramatic.)

[ElbertF]

It does actually.

"One face was created by increasing the contrast of the androgynous face, while the other face was created by decreasing the contrast. The face with more contrast is perceived as female, while the face with less contrast is perceived as male."