Florence Nightingale Effect

The term emerged in late 20th-century pop culture, with no documented usage before the 1970s. Many credit the 1985 film Back to the Future, where Dr. Emmett Brown explains that Lorraine's crush on Marty is "the Florence Nightingale Effect." Named for Florence Nightingale (1820–1910), the pioneering British nurse dubbed "The Lady with the Lamp," the term ironically references someone who never married and showed no record of falling for patients—she feared marriage would interfere with her nursing calling.