Article explaining gender bias against women in STEM: http://gender.stanford.edu/news/2014/why-does-john-get-stem-job-rather-jennifer

Basically, STEM professors were given resumes where the only difference was the name (John vs Jennifer) and "Jennifer was offered, on average, $4,000 per year (13%) less than John." If someone brought up this point in a discussion about the gender pay gap (and the MRA is arguing that the pay gap is justified or nonexistent), how would the MRA respond?