Yes, precisely. It seems like a good idea to keep an eyeball on the absolute, unadjusted numbers, even if controlling for IQ and other factor is a valid way to look at it, since the experience of being someone in the disadvantaged bracket is not a minuscule difference. Flattening the perceived income difference by controlling for IQ hides the absolute magnitude of income differences. Plus there’s always the chance that the model is wrong, and/or not accounting for everything.