US presidents.
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According to Simonton, and data compiled by Libb Thims, here they are:
1. John Adams - 173
2. Thomas Jefferson - 160
3. John F. Kennedy - 158
4. Bill Clinton - 156
5. James Madison - 155
6. Jimmy Carter - 153
7. Woodrow Wilson -152
8 Theodore Roosevelt - 149
9. James A. Garfield - 148
10. Chester A. Arthur - 148
11. Abraham Lincoln - 148
12. Franklin D. Roosevelt - 146
13. Millard Fillmore - 143
14. John Tyler - 142
15. Franklin Pierce - 141
In 2006, University of California at Davis psychology professor Dean Simonton completed a comprehensive study examining the "intellectual brilliance" of US presidents.
Business Insider
According to Simonton, and data compiled by Libb Thims, here they are:
1. John Adams - 173
2. Thomas Jefferson - 160
3. John F. Kennedy - 158
4. Bill Clinton - 156
5. James Madison - 155
6. Jimmy Carter - 153
7. Woodrow Wilson -152
8 Theodore Roosevelt - 149
9. James A. Garfield - 148
10. Chester A. Arthur - 148
11. Abraham Lincoln - 148
12. Franklin D. Roosevelt - 146
13. Millard Fillmore - 143
14. John Tyler - 142
15. Franklin Pierce - 141