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Cognition and Behavior terms categorized by century of first literary appearance.
| Century | Cognition Words that Make Their First Appearance | Behavior Words that Make Their First Appearance | ||
|---|---|---|---|---|
| n | % | n | % | |
| 13th | 1 | 1.26 | 0 | 0 |
| 14th | 3 | 3.79 | 1 | 3.70 |
| 15th | 8 | 10.12 | 6 | 22.22 |
| 16th | 10 | 12.65 | 7 | 25.92 |
| 17th | 26 | 32.91 | 7 | 25.92 |
| 18th | 5 | 6.32 | 1 | 3.70 |
| 19th | 24 | 30.37 | 2 | 7.40 |
| 20th | 2 | 2.53 | 3 | 11.11 |
