http://asr.sagepub.com/content/early/2016/10/08/0003122416668154.abstract?rss=1
http://www.theatlantic.com/business/archive/2016/10/privilege-helps-men-not-women-get-lucrative-jobs/504497/
The resumes sent differed in gender and signals of social class background. For the latter, types of sports and other extracurriculars were used as the signals (e.g. polo, sailing, and classical music to signal high social class background, versus track and field sports and country music to signal low social class background).
Resumes purporting to be from men from high social class backgrounds got callbacks four times the rate of others. On the other hand, signaling a high social class background was associated with a lower callback rate for women.