This is discriminating. Articles with a similar sentiment have been posted here recently, authored by people on the other end of the capital spectrum. So count

This is discriminating. Articles with a similar sentiment have been posted here recently, authored by people on the other end of the capital spectrum. So count in that bias. One doesn't really need a study to show that accumulating more problems, one needs more brain power to deal with that. In fact it's part of the collective common sense things are like that. I'd rather like to see articles that summarize hiring and admission biases based on socio economic background. Especially also when it comes to management positions, there the gap is even more extreme. Ironically people there earn extra money, so they can buy the problems away...