Usage History of 'psychopaths'

The following chart shows how frequently 'psychopaths' appeared in printed materials over time. For example, the word 'psychopaths' occurred 6 times in books in 1798 and 12,969 times in 2008. From 1798 to 2008, the word 'psychopaths' was used a total of 292,503 times in books scanned by Google. See Reference: Google Ngram project.

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