1926 American psychologist Catharine Cox tests the intelligence and personalities of 300 geniuses and finds the average IQ to be 165+; key characteristics are tremendous persistence and motivation.
1956 J.P. Guilford develops the concept of divergent thinking to discuss creativity.
2009 In Genius 101: Creators, Leaders, and Prodigies, American psychologist Dean Keith Simonton argues that geniuses are the result of good genes and good surroundings.
2009 Swedish psychologist Anders Ericsson attributes expert performance to 10,000 hours of practice.
Discussion about genius has been dominated for most of its history ...