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Sir Kenelm Digby (1603-1665), writer, naval commander, diplomat, and philosopher, described a condition now known as induced psychosis or folie à deux more than two hundred years before Lasegue, Falret (who coined the name folie à deux), and Baillarger, to whom priority is generally ascribed. Digby, at a time
when individuals were hanged and burned for being witches, denied supernatural effects and possession by evil spirits and substituted a psychological explanation.