This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
Okay, here’s another. Large pupils are a sign of health and of arousal, and make humans feel more attraction, because it’s a better mate for breeding. Ads that leverage a model’s attractiveness will perform better if they use models with bigger pupils or digitally enlarge them.
Hypothesis for an existing observation without any robust underlying model. Even the advertisement bit is just a weak correlation which was observed after the fact and not predicted in advance based on any model