The studies I've seen suggest that the poor are more likely to suffer from mental disorders than the rich. http://archpsyc.jamanetwork.com/article.aspx?articlei

The studies I've seen suggest that the poor are more likely to suffer from mental disorders than the rich. http://archpsyc.jamanetwork.com/article.aspx?articleid=211213 http://archpsyc.jamanetwork.com/article.aspx?articleid=21121... estimates that 20-54 year olds making <$20,000 per year are 1.8x more likely to have a mood disorder and 3.7x more likely to attempt suicide than those making >$70,000/year. There is evidence for a relationship in the longitudinal analysis as well, so it's not necessarily a matter of upbringing.