John Money

John Money (1921–2006) was a New Zealand-American psychologist and sexologist at Johns Hopkins who coined the term 'gender identity' and 'gender role,' and conducted the infamous David Reimer case, attempting to raise a biological male as female after circumcision accident.

Coined key terminology in gender theory; his work provided the foundational framework for the distinction between biological sex and gender identity, despite the catastrophic failure of the Reimer case.