“Creativity is closely correlated with personality factors of dominance, introversion, and ego strength. So I wouldn’t try to measure creativity by using a test of creativity per se, but rather by measuring personality factors that correlate highly with it. It has been shown that intelligence is also a precondition for creativity in any socially useful sense. So I would test for creativity with the 16 PF [Personality Factors] Test and a culture-fair intelligence test.”