The relevant studies all seem to be behind paywalls, but the graphs from this one looked promising.
Jay L. Zagorsky (2007): “Do You Have to Be Smart to Be Rich? The Impact of IQ on Wealth, Income and Financial Distress.” Intelligence, 35 (5), 489-501.
The relevant studies all seem to be behind paywalls, but the graphs from this one looked promising.
Jay L. Zagorsky (2007): “Do You Have to Be Smart to Be Rich? The Impact of IQ on Wealth, Income and Financial Distress.” Intelligence, 35 (5), 489-501.
See also Anders Sandberg’s commentary on that paper.