Geena Davis Institute for Gender In Media found that, in crowd scenes, women tend to comprise about 17 percent of any given crowd. She's argued, based on outside data and her own interpretations, that this imbalance relates to and reinforces the way men perceive the actual number of women in any given room.

“If there's 17 percent women, the men in the group think it's 50-50,” she told NPR. “And if there's 33 percent women, the men perceive that as there being more women in the room than men.”