trait that creative geniuses often share

[milo]

You evidently know little about standard measures. 

actually, that is an area i would report my success level to be quite above the average.

I suspect it was a personality assessment not too dissimilar to the MMPI, any other kind of assessment, especially self-reporting, would not even be considered for peer review. 

Perhaps that is what you suspect but there is absolutely /no/ evidence to back your suspicions up.  What we do have is the article that you posted which states

" . . . participants took a creative achievement questionnaire, in which they reported their levels of success in ten creative fields"

Considering this research is out of Northwestern University I tend to think the synopsis on the assessment is simply poor reporting. Self-reporting is never used as it generally must rely on the person's memory and perception, both of which are never accurate. Such things are never used in any type of legitimate study, not even in the social sciences.

dale

my experience is that such things are used frequently, one of the reasons I called this particular example out.