Earnings effects of personality, education and IQ
http://infoproc.blogspot.com/2011/04/earnings-effects-of-personality.htmlby Steve Hsu
Thanks to a reader for pointing me to this recent paper by Heckman and collaborators, which makes use of data from the Terman study of gifted individuals (minimum IQ of 135 on the Stanford-Binet).
Of the personality factors, Conscientiousness and Extraversion had the largest (positive) effect on lifetime earnings: the most conscientious or extroverted individuals earned, on average, about 50% more than the least (see figures below).
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The paper being discussed is "The Effects of Education, Personality, and IQ on Earnings of High-Ability Men" at
http://www.iza.org/conference_files/CoNoCoSk2011/gensowski_m6556.pdf based on a study of "Terman's Termites".