Finding no link between IQ and wealth (rather than income) when controlling for educational attainment and type of work is not very meaningful, because IQ is a major determining factor of educational attainment and the type of work one does.
No. The finding is HIGHLY illuminating, because it shows that individuals with divergent IQs but similar SES backgrounds make the same amount. This shows that SES matters more than IQ. You're just ignoring this because it's inconvenient to your argument, and repeating an assumption you have been unable to support.
It's not like we needed a study, though, because this point is self-evident on this site. Raising high-IQ children is EXPENSIVE, and failure to provide certain interventions can set these children up for failure. For a family that can't afford the investments in time and resources...
