This story appears in the January 2017 issue of National Geographic magazine. To a degree unimaginable a decade ago, the intensely personal subject of gender identity has entered the public square.

female gender identity, and feminine behavior—on one side and all the XYs—testes, penis, testosterone, male gender identity, and masculine behavior—on the other. It’s possible to be XX and ...

After decades of creating laws that assumed “sex” and “gender” were ... typical definitions of male or female and observed how children sometimes developed identity distinct from their ...

They try to develop their gender identity starting their sensorimotor stage of personality ... the process of gender socialization and identified differences between female and male behaviours. The ...

The term genderqueer refers to someone who is non-conforming to any gender identity. They don't identify as transgender, ...

A kindergarten lesson plan advises teachers on how to explain gender identity ... symbols.” A fourth grade lesson plan on puberty encourages teachers to use gender-neutral terms for the male and ...

Following new federal standards and field testing, new questions about sexual orientation, gender, and race and ethnicity ...