Would IQ be a confounding variable with wealth?
Maybe I'm using the wrong term, but: a smarter person would (in many cases) make more money.
Maybe I'm using the wrong term, but: a smarter person would (in many cases) make more money.
An interesting study would be: is work ethic inherited (either genetically or culturally). It would be another confounder here, I think.
Probably not everything, but I believe it could be correlated with testosterone. I'm sure that has a genetic, diet, and environmental component to it. So right away I can say: yes.