justToAddLink

in Tunisia, this is covered by highschool seniors in the math section.

this can also be seen through the fact that females are four times more sensitive than males to economic status cues when rating opposite sex attractiveness [1]

[1] - Guanlin Wang, Minxuan Cao, Justina Sauciuvenaite, Ruth Bissland, Megan Hacker, Catherine Hambly, Lobke M. Vaanholt, Chaoqun Niu, Mark D. Faries, & John R. Speakman (2018). Different impacts of resources on opposite sex ratings of physical attractiveness by males and females. Evolution and Human Behavior, 39(2), 220-225. https://www.sciencedirect.com/science/article/abs/pii/S10905...

just to add a source of the attractiveness declining less steeply:

Maestripieri, Dario et al. "A greater decline in female facial attractiveness during middle age reflects women’s loss of reproductive value". Frontiers in Psychology 5. (2014): 179. https://www.frontiersin.org/articles/10.3389/fpsyg.2014.0017...