A black and white photograph of UCLA psychologist Evelyn Hooker smiling in a black coat against a white background.

#22

(1954) UCLA psychologist Evelyn Hooker begins publicly presenting her research showing that there is no detectable difference in the psychological health of homosexual and heterosexual men. Hooker’s research is considered to be the foundation for the decision to remove homosexuality from the Diagnostic and Statistical Manual of Mental Disorders.