Likely not the research referenced by the GP, but this paper: http://web.econ.ku.dk/gensowski/research/Terman/Terman.pdf http://web.econ.ku.dk/gensowski/researc

Likely not the research referenced by the GP, but this paper: http://web.econ.ku.dk/gensowski/research/Terman/Terman.pdf http://web.econ.ku.dk/gensowski/research/Terman/Terman.pdf finds that Conscientiousness, IQ, and Extraversion are correlated with increased income (for men at least) among the Terman survey. If I'm summarizing correctly, the Terman survey includes a group of 856 boys and 672 girls born around 1910 and selected in 1921-1922 who were followed until 1991.