Gender essentialism is the belief that a person, thing, or particular trait is inherently and permanently male and masculine or female and feminine. In other words, it considers biological sex the ...

But while the idea that gender isn’t binary (i.e. there’s more than just men and women out there) may seem new to many people, gender non-conformity isn’t a 21st-century creation. Examples of people ...

For example, the beliefs that only women wear dresses, that the color pink is for girls, and that women are less mathematically capable than men are rooted in how we as a society understand and treat ...