Conclusion from paper:

With large-scale, population-representative data, we show that Americans are aware of, and in fact quite pessimistic about, the remarkably unequal distribution of economic outcomes by family background.

This article says a bit more about it without a paywall: https://www.sciencedaily.com/releases/2019/06/190624161147.h...

This is flamebait, but way too subtle to be flagged.