Richard von Krafft-Ebing (1840-1902)
Richard von Krafft-Ebing was the first academic to investigate sexual deviance, now called paraphilia in academic circles and perversions in colloquial use.-http://www.jahsonic.com/KrafftEbing.html
wrote Psychopathia Sexualis (1886), a famous study of sexual perversity, and remains well-known for his coinage of the term sadism.-wikipedia.en
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