You don't need to install an app, if you do the right pattern of clicks you can download it. But here is an ungated preprint (wasn't available when I first downloaded the paper): http://www.ereuben.net/research/StereotypesWomensCareer.pdf

They could indeed be observing that "asians are good at math" stereotypes are a useful predictor, the study doesn't really give enough info to determine that one way or the other.