How many standard deviations? My (admittedly only partially justified) guess is that there are diminishing returns to being (say) three standard deviations above the mean compared to two in a CEO position as opposed to (say) a mathematician. (Not that IQ is perfectly correlated with math success either.)
At least for income the effect seems robust into the tails, where IIRC each standard deviation added a fixed amount of expected income in basically the complete dataset.
How many standard deviations? My (admittedly only partially justified) guess is that there are diminishing returns to being (say) three standard deviations above the mean compared to two in a CEO position as opposed to (say) a mathematician. (Not that IQ is perfectly correlated with math success either.)
At least for income the effect seems robust into the tails, where IIRC each standard deviation added a fixed amount of expected income in basically the complete dataset.