Usage History of 'cognition'

The following chart shows how frequently 'cognition' appeared in printed materials over time. For example, the word 'cognition' occurred 4 times in books in 1644 and 340,598 times in 2008. From 1644 to 2008, the word 'cognition' was used a total of 6,657,300 times in books scanned by Google. See Reference: Google Ngram project.

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